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Preliminary study of average milking speed for the first calving cows in Simmental and Holstein breed

Ivkic, Zdenko; Mijic, P; Bulic, Vesna; Solic, V; Cadavez, Vasco
Fonte: Instituto Politécnico de Bragança Publicador: Instituto Politécnico de Bragança
Tipo: Conferência ou Objeto de Conferência
CSQ
Relevância na Pesquisa
36.46%
Mastitis is a significant disease in cattle production In order to reduce mastitis, special attention in Cattle Breeding program in Croatia has given to average milking speed (AMS). It is necessarily to achieve maximum milking speed as soon as possible and to keep it during longer period. This gives opportunity to select the animals with no extreme values of milking speed, i.e. animals with average milking speed. The objective of this study was to determine the average milking speed for first calving cows of Simmental and Holstein cattle in Croatia, and to define the environmental effects affecting this trait as well. Data consisted of 7155 test-day records of 4341 cows. Similar values of AMS mean was found for Simmental (1.56 kg/min) and Holstein breed (1.57 kg/min). The following fixed effects were tested in the model for AMS: year of calving, month of test-day control and stage of lactation, and did not show statistically significant effect. Correlations between AMS and milk traits were low.

Monitoramento da influência de medidas terapêuticas e higiênico-sanitárias sobre a etiopatologenia e a produção leiteira em um rebanho leiteiro de Taquara, região do Valo do Rio dos Sinos, RS.; Monitoring of the influence of therapeutic and hygienic -sanitary measures about etiopatogeny and the milking process in a dairy herd of taquara, vale do rio dos sinos, RS

Bangel Junior, Jorge Jose
Fonte: Universidade Federal do Rio Grande do Sul Publicador: Universidade Federal do Rio Grande do Sul
Tipo: Dissertação Formato: application/pdf
POR
Relevância na Pesquisa
26.12%
A mastite bovina é comprovadamente um dos maiores problemas atuais da pecuária leiteira no Brasil e no mundo, acarretando ônus aos produtores, à indústria e ao consumidor final. Numa propriedade leiteira do município de Taquara, Rio Grande do Sul, Brasil, diversas medidas terapêuticas e higiênico-sanitárias foram introduzidas com o objetivo de monitorar sua influência sobre a produção leiteira e a etiopatogenia dos agentes envolvidos nos casos de mastite. No início dos trabalhos, em 1990, mais de 70% dos animais apresentavam pelo menos um quarto mamário com mamite clínica, sendo que ao final do estudo, em 2002, nenhum caso clínico da enfermidade foi relatado, tendo sido eliminado completamente agentes como Streptococcus agalactiae, Arcanobacterium pyogenes e Nocardia spp. O conjunto de medidas introduzidas elevou a produção/dia da propriedade em mais de 600%, melhorando a qualidade genética e sanitária do rebanho. Apesar de ainda existirem casos esporádicos de mamite subclínica, as mudanças favoreceram na identificação de problemas ou falhas no processo, possibilitando medidas rápidas e eficazes de controle e tratamento.; The bovine mastite is one of the largest problems of dairy herds in Brazil and all over the world...

A importância da qualidade da ordenha no controle de mastite bovina

Zeni, Felipe
Fonte: Universidade Federal do Rio Grande do Sul Publicador: Universidade Federal do Rio Grande do Sul
Tipo: Trabalho de Conclusão de Curso Formato: application/pdf
POR
Relevância na Pesquisa
26.61%
Este trabalho tem por objetivo demonstrar a importância em proporcionar ordenha de qualidade como ferramenta de controle de mastite bovina. A mastite bovina, que é a doença mais comum em rebanhos leiteiros, causa enormes prejuízos aos produtores de leite e às indústrias de laticínios. Além disso, o aumento do poder de compra do consumidor brasileiro vem acompanhado por uma demanda por carnes e produtos lácteos em maior volume e em melhor qualidade. Com isso nos deparamos diante de um grande desafio da cadeia produtiva do leite: aumentar ainda mais o volume de produção e melhorar a qualidade do leite. Devido à importância da mastite bovina, se faz necessário medidas estratégicas para o seu controle e, dentre elas, o controle da qualidade da ordenha tem papel fundamental e central no controle estratégico de mastite bovina. No desenvolvimento desse trabalho serão abordados pontos críticos em um processo de ordenha e medidas de controle fundamentais na redução de mastite bovina, entre elas: higiene da ordenha, regulagem do sistema de ordenha, controle do ambiente e melhoramento genético estratégico.; This work has a objective to demonstrate the importance to provide quality in milking as a tool in bovine mastits control. The bovine mastits...

Avaliação genética de touros da raça Gir para produção de leite no dia do controle e em 305 dias de lactação

Ledic, Ivan Luz; Verneque, Rui da Silva; El Faro, Lenira; Tonhati, Humberto; Martinez, Mário Luiz; Oliveira, Mauro Dal Secco de; Costa, Cláudio Nápolis; Teodoro, Roberto Luiz; Fernandes, Leonardo de Oliveira
Fonte: Sociedade Brasileira de Zootecnia Publicador: Sociedade Brasileira de Zootecnia
Tipo: Artigo de Revista Científica Formato: 1964-1972
POR
Relevância na Pesquisa
35.99%
Dados de 32.779 controles mensais, de 3.605 lactações em 305 dias (PL305), de 2.082 vacas Gir, filhas de 281 touros, com partos ocorridos de 1987 a 1999 em 11 rebanhos, foram usados com o objetivo de verificar a viabilidade de utilização da produção de leite no dia do controle (PLDC) em avaliações genéticas de touros da raça Gir. Foram realizadas análises univariadas das PLDC1 a PLDC10 e da PL305 pelo método de máxima verossimilhança restrita, sob modelo animal, incluindo as três primeiras lactações como medidas repetidas de um mesmo animal, diferenciados conforme o grupo contemporâneo de rebanho-ano-estação, de acordo com a idade da vaca ao parto e, do intervalo parto-primeiro controle na PLDC1. As médias observadas e os respectivos desvios-padrão (kg) para PLDC1 a PLDC10 e PL305 foram: 11,97±4,64; 11,93±4,68; 10,98±4,40; 10,18±4,12; 9,66±3,88; 9,20±3,69; 8,63±3,51; 8,08±3,33; 7,59±3,27; 7,22±3,15 e 2.746,17±1.299,90. As estimativas de herdabilidade para as PLDC1 a PLDC10 foram de 0,26; 0,19; 0,18; 0,20; 0,15; 0,13; 0,14; 0,10; 0,11 e 0,10, respectivamente; para a PL305 foi de 0,18. As correlações de ordem dos valores genéticos preditos de 281 touros, obtidos entre as PLDC e a PL305, foram altas...

Estimativa de parâmetros genéticos, fenotípicos e ambientes para as produções de leite no dia do controle e em 305 dias de lactação de vacas da raça Gir

Ledic, Ivan Luz; Tonhati, Humberto; Verneque, Rui da Silva; El Faro, Lenira; Martinez, Mário Luiz; Costa, Cláudio Nápolis; Pereira, Jonas Carlos Campos; Fernandes, Leonardo de Oliveira; Albuquerque, Lucia Galvão de
Fonte: Sociedade Brasileira de Zootecnia Publicador: Sociedade Brasileira de Zootecnia
Tipo: Artigo de Revista Científica Formato: 1953-1963
POR
Relevância na Pesquisa
36.02%
Dados de 32.779 controles mensais, de 3.605 lactações em 305 dias (PL305), de 2.082 vacas Gir, filhas de 281 touros, com partos ocorridos de 1987 a 1999, em 11 rebanhos, foram usados com o objetivo de verificar a viabilidade de utilização da produção de leite no dia do controle (PLDC1 a PLDC10) em avaliações genéticas da raça Gir. Foram realizadas análises bivariadas entre as PLDC1 a PLDC10 e PL305, usando para estimar os componentes de (co)variâncias o método de máxima verossimilhança restrita, sob modelo animal, incluindo as três primeiras lactações como medidas repetidas de uma mesma vaca, diferenciadas conforme o grupo contemporâneo de rebanho-ano-estação, de acordo com a idade da vaca ao parto e o intervalo parto-primeiro controle na PLDC1. As médias observadas e os respectivos desvios-padrão (kg) para PLDC1 a PLDC10 e PL305 foram: 11,97±4,64; 11,93±4,68; 10,98±4,40; 10,18±4,12; 9,66±3,88; 9,20±3,69; 8,63±3,51; 8,08±3,33; 7,59±3,27; 7,22±3,15 e 2.746,17±1.299,90. A duração de lactação foi de 273,72±48,95 dias. As estimativas de herdabilidade variaram nas PLDC de 0,24 a 0,14, sendo maior no primeiro controle e decrescendo até o décimo. A herdabilidade da PL305 foi de 0,19. As estimativas de correlações genéticas entre as PLDC e PL305 variaram de 0...

Forced ventilation and evaporative cooling of waiting and milking areas and its influence on the physiological and production responses of crossbred Holstein × Zebu cows

Amaral, R.S.; Chaves, Modesto; Teodoro, Sônia; Fitas da Cruz, Vasco; Baptista, Fátima J.
Fonte: Universidade de Évora Publicador: Universidade de Évora
Tipo: Artigo de Revista Científica
ENG
Relevância na Pesquisa
36.33%
The main objective of this work was to evaluate the effect of forced ventilation and evaporative cooling on the physiological and production responses of dairy cows Holstein × Zebu. Experiments were conducted with 32 crossbred cows (Holstein × Zebu) in the same lactation phase, mean daily production of 17 kg and mean body weight of 550 kg. Four different treatments were randomly assigned to groups with eight cows each. The treatments were: Evaporative cooling in the waiting room + forced ventilation with Evaporative cooling in the milking room (NW+VNM), Evaporative cooling in the waiting room (NW), forced ventilation with Evaporative cooling in the milking room (VNM) and a control treatment without forced ventilation and evaporative cooling (CON). Experimental work was realised in a commercial farm located in the interior of Bahia State, Brazil, during 45 days in January and February. Climatic data were measured using a meteorological station. Temperature Humidity Index (THI) and Wet Bulb Globe Temperature (WBGT) were calculated. In order to study animal responses milk production, udder temperature, heart rate, respiratory rate, temperature of white and black spots and rectal temperature were measured. It was observed that the cows under VNM treatment presented higher milk production and lower udder temperature...

Contribuição para um manual de boas práticas de maneio da ordenha para a produção de leite de elevada qualidade nos Açores : estudo de alguns pontos críticos de controlo

Silva, José Luís Valente
Fonte: Universidade dos Açores Publicador: Universidade dos Açores
Tipo: Dissertação de Mestrado
Publicado em 05/03/2012 POR
Relevância na Pesquisa
26.63%
Dissertação de Mestrado em Tecnologia e Segurança Alimentar.; O objetivo deste estudo consistiu essencialmente na avaliação da higiene da ordenha, em vinte explorações leiteiras da Ilha Terceira, Açores, através do estudo de alguns pontos críticos de controlo, com vista a contribuir para elaboração de um Manual de Boas Práticas de Maneio de Ordenha, um pré-requisito essencial ao desenvolvimento de um futuro plano HACCP destinado à produção de leite de elevada qualidade nas explorações leiteiras açorianas. Esta avaliação da higiene e qualidade da ordenha foi realizada fazendo recurso a três testes quantitativos sobre a higiene dos úberes, ao grau de hiperqueratose da ponta do teto e à higiene da extremidade do teto; e a um inquérito aos ordenhadores acerca dos vários procedimentos envolvidos na rotina de ordenha, efetuado em 20 explorações da Ilha Terceira, num total de 258 vacas avaliadas, sendo 159 pertencentes a explorações com ordenhas fixas e 99 a explorações com ordenhas móveis. Através de uma análise SWOT (Strenghts, Weakness, Opportunities, Threats), fez-se ainda uma síntese dos pontos fortes e os pontos fracos encontrados na higiene da ordenha destas explorações. Concluímos que a maioria das explorações estudadas não praticava uma boa preparação dos úberes antes da ordenha...

Low cost driver device for microclimate maintenance in the pre-milking of dairy cattle

Silva,Irenilson M. da; Pandorfi,Héliton; Vasconcelos,Ângelo J. S. de; Laurenti,Renato; Guiselini,Cristiane
Fonte: Associação Brasileira de Engenharia Agrícola Publicador: Associação Brasileira de Engenharia Agrícola
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/02/2013 EN
Relevância na Pesquisa
26.2%
Due to the importance of the environment on animal production and thus environmental control, the study aims to build a system for monitoring and control the meteorological variables, temperature and relative humidity, low cost, which can be associated with an evaporative cooling system (ECS). The system development included all the stages of assembly, test and laboratory calibration, and later the validation of the equipment carried in the field. The validation step showed results which allowed concluding that the system can be safely used in the monitoring of these variables. The controller was efficient in management of the microclimate in the waiting corral and allowed the maintenance of the air temperature within the comfort range for dairy cattle in pre-milking with averaged 25.09 ºC during the afternoon. The equipment showed the lower cost (R$ 325.76) when compared to other middle market (R$ 450.00).

Risk factors associated with buffalo mastitis in the Brazilian Northeast

Medeiros,Elizabeth S.; Freitas,Manuela F. Lyra de; Saukas,Tomoe N.; Azevedo,Sérgio S.; Pinheiro Junior,José Wilton; Brandespim,Daniel F.; Neto,Orestes Luiz de S.; Mota,Rinaldo A.
Fonte: Colégio Brasileiro de Patologia Animal - CBPA; Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA) Publicador: Colégio Brasileiro de Patologia Animal - CBPA; Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/06/2011 EN
Relevância na Pesquisa
26.34%
Risk factors for subclinical mastitis were studied in 474 buffaloes cows proceeding from four dairy farms located in the states of Pernambuco, Alagoas, Bahia and Ceará, Brazil. Milk samples (n=1896) of lactating buffaloes cows were examined for somatic cells count (SCC) and microbiologic exam, and a questionnaire composed by objective questions was applied in order to obtain animals and herd management data. Risk factors analysis was performed in two stages: univariate and mutivariate analysis. Two analysis were performed, one considering the animal classification for SCC as the dependent variable (<400,000 - negative; >400,000 - positive) and another, considering the microbiologic exam result (positive and negative). In the multivariate analysis considering SCC as dependent variable, the lack of teat washing was the only variable identified as a risk factor, so that farms without this procedure before the milking presented risk of infection of 2.68 (I.C. 1.49-4.83). In the multivariate analysis considering the microbiologic exam as dependent variable, it was observed that properties that performed the cleaning of the milking equipment manually presented risk of 1.85 (I.CI. 1.32-3.64), which was higher than those properties that performed the cleaning mechanically (p=0.019). Risk factors for the occurrence of subclinical mastitis in dairy buffaloes in Brazilian Northeast farms were related to the characteristics of improper milking management. Risk factors identified in this study must be carefully corrected in order to reduce the frequency of mastitis cases...

Feed-back control of milk secretion in the goat by a chemical in milk.

Henderson, A J; Peaker, M
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
Publicado em /06/1984 EN
Relevância na Pesquisa
26.52%
In order to investigate the nature of the inhibition of milk secretion during a long milking interval, goats were treated in three possible ways: (i) milked twice daily at 08.00 h and 16.00 h or (ii) milked thrice daily at 00.00 h, 08.00 h and 16.00 h, or (iii) milked thrice daily at 00.00 h, 08.00 h and 16.00 h, but at 00.00 h the milk removed was replaced with an equal volume of isosmotic sucrose solution. The latter treatment was carried out in order to subject the gland to a degree of physical distension equivalent to that on treatment (i). On either thrice-daily milking or thrice-daily milking with sucrose replacement, milk secretion rate over the 16.00-08.00 h period was significantly higher (by about 10% in both cases) than on twice-daily milking. Secretion rates of lactose, milk protein, citrate and calcium during the 00.00-08.00 h period were similar on either thrice-daily milking or thrice-daily milking with sucrose replacement; the secretion rate of fat was significantly higher on thrice-daily milking with sucrose replacement. Secretion rates of Na+, K+ and Cl- were significantly higher on thrice-daily milking with sucrose replacement. In the case of Na+, the increased Na+ secretion rate was sufficient to create a normal Na+ concentration in the milk/sucrose mixture removed at the next milking. In the cases of K+ and Cl-...

Mammary function and its control at the cessation of lactation in the goat.

Fleet, I R; Peaker, M
Fonte: PubMed Publicador: PubMed
Tipo: Artigo de Revista Científica
Publicado em /06/1978 EN
Relevância na Pesquisa
26.6%
1. The changes in mammary function following cessation of milking during declining lactation have been studied in conscious goats. 2. No significant changes in the rate of milk secretion, mammary blood flow or metabolism occurred in the first 24 h after cessation of milking. After then, secretory rate, mammary blood flow, oxygen consumption, glucose uptake and acetate uptake decreased markedly over the next 3 days. Up to the time of maximum udder distension on day 3, there were no major changes in milk composition. 3. It was found that the rate of milk secretion declined when the calculated pressure within the alveoli became positive. 4. After 3 days, mammary volume and intramammary pressure decreased, and the composition of milk changed slowly to resemble that of extracellular fluid, i.e. [Na+], [Cl-], [HCO3-] and pH increased while [K+], [lactose] and [citrate] decreased. During this time [lactose] and [K+] were positively correlated, and [lactose] and [Na+], and [lactose] and [Cl-] negatively correlated. 5. It is suggested that the changes in milk composition, the decreases in mammary volume and in intramammary pressure after day 3 are due to the loss of integrity of the mammary epithelium. 6. By about 7 weeks after the cessation of milking the udder volume was less than the empty udder volume before milking was stopped...

Micoplasmose em bovinos de aptidão leiteira: fatores predisponentes para a ocorrência e manifestação da síndrome vulvovaginite granular; Mycoplasmosis in cattle dairy calves: underlying factors for the occurrence and manifestation of the syndrome granular vaginitis

NASCIMENTO-ROCHA, Josefa Moreira do
Fonte: Universidade Federal de Goiás; BR; UFG; Doutorado em Ciência Animal; Ciências Agrárias Publicador: Universidade Federal de Goiás; BR; UFG; Doutorado em Ciência Animal; Ciências Agrárias
Tipo: Tese de Doutorado Formato: application/pdf
POR
Relevância na Pesquisa
26.42%
The reduction of reproductive rates is measured by the reduction in the number of calves born that immediately reflected in the reduction of milk production and profitability of commercial property. The effect is the increased administrative costs of maintenance with dry cows, higher rates of rejection and a higher number of doses of semen for conception. Parameters related to the level of hygiene of the udder and the milking system and environmental criteria as the overall control on the suction pressure of the milking, the ventilation system for livestock and hygiene in the milking parlor, contribute to the satisfaction of the control of pathogens transmissible among livestock. Study on monitoring the herd showed that the time of calving interval increases significantly in the first lactation cows with vaginitis, but the injury was not associated with cases of voluntary discharge. Research on the likelihood of introduction of infectious agents into herds free of the disease found that the significant risk factors for this spread were related to the return of animals that were removed for marketing, proximity between pastures of different properties and especially the clothing of a veterinarian or visitors. When analyzing the risk factors for the occurrence of a disease the causative factors are considered. Regression analysis to identify risk factors usually consider the multifactorial effects and outcome. The identification of the risk factor is to compare the pattern of distribution of the dependent variables between the levels of occurrence of the disease. Infections with mycoplasma (Mollicutes) in farm animals...

Gestão do processo de captação de leite um estudo de caso na Cooperativa Agrícola Alto do Rio Grande Ltda (CAARG); Management of the milking process: a case-study of the Alto Rio Grande (caarg) dairy cooperative

Fonte: Organizações Rurais e Agroindustriais Publicador: Organizações Rurais e Agroindustriais
Tipo: Artigo de Revista Científica
OTHER
Relevância na Pesquisa
26.12%
The aim of this work was to assess the milking process in an agricultural cooperative in Lavras, Minas Gerais state. The study was done between August and November/2004, employing a qualitative research methodology that involved the researchers and the cooperative’s employees. Process management promotes the organization and management of information in the company, favoring cost administration and control. The study presented some lines with average costs above R$ 1.51/Km, and others below. This fact could impair the efficiency of the process. To ensure quality, legal parameters were defined, through laboratory analysis, to classify the milk. The observance of the strong and weak points are the best way to maximize the organization’s efficiency. However, these weak points deserve special attention from the CAARG’s decision makers in order to guarantee the cooperative’s performance. The main strategies implemented were financing and allowance of the outgoing tanks, combined with payment according to the volume and quality of the milk. Nevertheless, vertical integration should be adopted through supply contracts or quota definition, which is extremely important in guaranteeing not only the supply, but mainly the quality of the raw-material.

Control and mitigation of bovine viral diarrhoea in Australian cattle populations.

Lanyon, Sasha Renee
Fonte: Universidade de Adelaide Publicador: Universidade de Adelaide
Tipo: Tese de Doutorado
Publicado em //2014
Relevância na Pesquisa
26.3%
Bovine viral diarrhoea (BVD), more commonly in Australia as Bovine Pestivirus, is an economically important disease of cattle. The causative agent, BVD virus (BVDV), is a member of the genus Pestivirus in the family Flaviviridae, closely related to Border Disease Virus and Classical Swine Fever Virus. An increased incidence and severity of secondary disease and potentially dramatic reproductive loss associated with BVDV infection results in ongoing financial impacts in infected herds. Fortunately, the epidemiology of BVD is such that the disease can be effectively controlled, and losses mitigated, by identification and removal of persistently BVDV infected (PI) cattle. Regional or national control schemes have been shown to be economically beneficial. In Australia, however, no regional schemes are active for the control of BVD. The first clinical case of BVD was reported in Australia in 1957. Recent serological evidence suggests that BVD may be the most prevalent infectious disease of cattle in Australia today. Despite this, BVD fails to be acknowledged as a major animal health priority. A postal survey of 631 South Australian cattle farmers showed that while interest in BVD was high, many producers did not believe their herds to be infected and failed to acknowledge the true impact the disease may have in an affected herd. The survey results revealed that farmers that practiced disease management through quarantine procedures...

Norwegian mastitis control programme

Østerås, O; Sølverød, L
Fonte: BioMed Central Publicador: BioMed Central
Tipo: Artigo de Revista Científica
Publicado em 01/04/2009 EN
Relevância na Pesquisa
26.2%
This paper describes the methods and results of the Norwegian Mastitis Control Program implemented in 1982. The program has formed an integral part of the Norwegian Cattle Health Services (NCHS) since 1995. The NCHS also have specific programs for milk fever, ketosis, reproduction and calf diseases. The goal of the program is to improve udder health by keeping the bulk milk somatic cell count (BMSCC) low, to reduce the use of antibiotics, to keep the cost of mastitis low at herd level and improve the consumers' attitude to milk products. In 1996, a decision was made to reduce the use of antibiotics in all animal production enterprises in Norway by 25% within five years. Relevant data has been collected through the Norwegian Cattle Herd Recording System (NCHRS); including health records since 1975 and somatic cell count (SCC) data since 1980. These data have been integrated within the NCHRS. Since 2000, mastitis laboratory data have also been included in the NCHRS. Data on clinical disease, SCC and mastitis bacteriology have been presented to farmers and advisors in monthly health periodicals since 1996, and on the internet since 2005. In 1996, Norwegian recommendations on the treatment of mastitis were implemented. Optimal milking protocols and milking machine function have been emphasised and less emphasis has been placed on dry cow therapy. A selective dry cow therapy program (SDCTP) was implemented in 2006...

Benefits of automated acclimatization during the pre-milking phase of lactating girolando cows

Silva,Irenilson M. da; Pandorfi,Héliton; Almeida,Gledson L. P.; Guiselini,Cristiane; Henrique,Hugo M.
Fonte: Associação Brasileira de Engenharia Agrícola Publicador: Associação Brasileira de Engenharia Agrícola
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/10/2011 EN
Relevância na Pesquisa
26.33%
The aim of this paper was to evaluate the automated acclimatization effects during pre-milking of cows on thermal conditioning, physiology, milk production and cost-benefit of the automated adiabatic evaporative cooling system (AECS). The treatments 20; 30; 40 min and control consisted of exposure time of pre-milking cows to the automated AECS. Sixteen cows were used with an average daily milk yield of 19 kg, distributed in a 4 x 4 Latin square design. The Tukey's test (P<0.05) was used to compare the means. The environmental variables, dry bulb temperature (DBT, ºC) and relative humidity (RH, %), were recorded every minute, which allowed the determination of the system efficiency through the Temperature and Humidity Index (THI). The respiratory rate (RR), rectal temperature (RT) and temperature of the coat (TC) were measured before and after the acclimatization. The 40 min treatment kept the environmental variables and the comfort indexes within recommended limits. The physiological variables (RR, RT and TC) were lower in the 40 min treatment and reflected positively on milk production, which increased 3.66% compared to the control treatment. The system was profitable, having a 43 days return on investment and a monthly revenue increase of R$ 1...

Estudio de la dinámica de la infección perinatal con BLV en un rodeo de tambo de alta prevalencia; Study of the dynamics of perinatal BLV infection in a highly infected dairy herd

Gutiérrez, Gerónimo
Fonte: Facultad de Ciencias Exactas y Naturales. Universidad de Buenos Aires Publicador: Facultad de Ciencias Exactas y Naturales. Universidad de Buenos Aires
Tipo: info:eu-repo/semantics/doctoralThesis; tesis doctoral; info:eu-repo/semantics/publishedVersion Formato: application/pdf
Publicado em //2010 SPA
Relevância na Pesquisa
26.31%
En este trabajo se estudió la progresión de la infección natural con BLV en un rodeo con alta prevalencia, desde el nacimiento hasta el ingreso al ciclo productivo. El objetivo central fue proponer una alternativa para interrumpir el ciclo epidemiológico de transmisión, debido a que en la actualidad parece no haber soluciones factibles para el control de esta infección. Como objetivo complementario, se estandarizó un ensayo de ELISA que permitirá confirmar el estado de infección. Se expresó la proteína p24 de BLV en Escherichia coli, se purificó por columna de afinidad, y se la utilizó como antígeno en un ensayo de ELISA (rp24-ELISA). Se evaluó la performance del ensayo según recomendaciones internacionales, observándose evidencia de que el rp24-ELISA es una herramienta exacta y precisa en la detección de anticuerpos contra la p24 de BLV como para ser utilizada en el tamizaje de animales infectados en nuestro país. En el estudio de la progresión de la infección se observó que alrededor del 11% de los animales se encuentra infectado desde los primeros días de vida y que este porcentaje se mantiene constante durante el primer año. Se evidenciaron nuevas infecciones a partir de los 15 meses y se observó un salto brusco de la prevalencia...

Aplicação da técnica de REP - PCR no rastreamento de Staphylococcus aureus em sala de ordenha, para o monitoramento da qualidade do leite; Using the REP-PCR technic in the tracking of Staphylococcus aureus in milking room, for milk quality production

Chapaval, Lea; Moon, David Henry; Gomes, José Elias; Duarte, Fábio Rodrigo; Tsai, Siu Mui
Fonte: Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia Publicador: Universidade de São Paulo. Faculdade de Medicina Veterinária e Zootecnia
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; ; ; ; ; ; Formato: application/pdf
Publicado em 01/01/2006 POR
Relevância na Pesquisa
36.33%
A identificação e classificação bacteriana são de suma importância no ambiente, na indústria, na medicina veterinária, na microbiologia e na ecologia microbiana. Um número de diferentes métodos genotípicos e fenotípicos estão sendo empregados para identificação e classificação microbiana. A técnica de REP-PCR é baseada no uso de primers sintetizados a partir de sequências repetidas de DNA, chamadas de palindrômicas extragênicas repetidas (REP), e têm sido descrita como um método o qual gera impressões digitais (fingerprints) de DNA que podem diferenciar bactérias entre gêneros e espécies. Neste estudo, o método de fingerprint foi usado para Staphylococcus aureus com o objetivo de avaliar a higiene de ordenha em duas fazendas leiteiras. Foram obtidos vários fingerprints de todos os isolados coletados das diferentes fontes estudadas (mãos de ordenhadores, tetos das vacas, leite e ordenhadeira), e foram obtidos comportamentos muito similares das bandas indicando que os isolados podem ser relatados como clones epidemiológicos. Em nosso estudo, a técnica mostrou ser eficiente para a análise da similaridade entre indivíduos da mesma espécie, no caso, o Staphylococcus aureus, mostrando ser uma ferramenta útil para investigação de falhas no manejo e...

Evaluation of the effectiveness of a mastitis control program in grad B milk farms of the state of São Paulo; Avaliação da efetividade de um programa de controle de mastite bovina em fazendas produtoras de leite B do estado de São Paulo

Laranja, L.F.; Machado, P.F.
Fonte: Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz Publicador: Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; ; ; ; ; Formato: application/pdf
Publicado em 01/12/1994 POR
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36.43%
The present work aimed to establish relationships between management practices, hygiene and therapy, that are components of a Mastitis Control Program with indication coefficients of prevalence and incidence of mastitis. Data were collected from seven grade "B" milk producing dairy farms, during eleven months (March/91 to February/92), comprising 1,683 lactating cows. Management, hygiene therapy practices evaluated, that are included in a Mastitis Control Program were: 1) Intramammary antibiotic treatment of all dry cows, 2) Instant treatment of clinical mastitis cases, 3) Proper milking management, with special emphasis on teat dipping after milking, 4) Good working condition of milking equipment, 5) Culling/segregation of cows with chronic mastitis, 6) Good hygiene conditions and confort for the cows in the management area. The coefficient used for mastitis prevalence and incidence evaluation were % of cows scored CMT ++/+ + + ,% of new infections and % of chronic infections. Results clearly suggest that all mastitis control practices were effective. Hence, those farms that adopted control practices, most of them showed lowest infection prevalence coefficient.; O objetivo do trabalho foi correlacionar a adoção ou não de seis práticas de manejo...

A randomised pilot study on the efficacy of milking cream and a homeopathic complex topical cream on Diaper Dermatitis

Pellow,Janice; Swanepoel,Marlo
Fonte: Health SA Gesondheid (Online) Publicador: Health SA Gesondheid (Online)
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/10/2013 EN
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Diaper dermatitis (DD) is an acute inflammation of the skin in the diaper area and is the most common cutaneous disease among infants and children. Calendula officinalis, Atropa belladonna and Sulphuricum acidum are homeopathic remedies which have been purported to be beneficial in wound healing and conditions affecting the skin, however, to date, no research has been conducted on the use of these remedies for DD. The aim of this seven-day, double-blind, controlled pilot study was to assess the efficacy of milking cream and a homeopathic complex cream as topical treatments for DD. Forty children between the ages of three to 24 months with DD were recruited. The homeopathic complex cream (n = 20) or unmedicated milking cream (n = 20) was applied after every nappy change for seven days. Efficacy on the severity of symptoms and the percentage of area affected was assessed by means of the 4-Point Grading Scale and the Modified Lund and Browder Charts respectively, on days 1, 2, 4 and 7. The results revealed that both groups showed statistically-significant improvements on rash severity and the percentage of area affected between consecutive visits, as well as over the entire research study period. Trends indicated that the treatment group had a faster resolution of symptoms and outperformed the control in certain affected body regions. Preliminary findings suggest that both milking cream and the homeopathic complex cream may be effective alternative treatment options for DD...