Consulta: creatorFacets:"Borges,João Batista Souza"
Registros recuperados: 4
Data/hora: 09/06/2024 13:58:54

Bioeconomic impact of bull breeding soundness examination in cow-calf systems
Provedor de dados: 96
Autores: Menegassi,Sílvio Renato Oliveira; Barcellos,Júlio Otávio Jardim; Lampert,Vinícius do Nascimento; Borges,João Batista Souza; Peripolli,Vanessa.
It was evaluated the bioeconomic impact of the breeding soundness evaluation on beef cattle production in southern Brazil. Two similar production systems, with and without the use of breeding soundness evaluation, were compared during 4 years in the municipality of Júlio e Castilhos. The rate of unsound bulls in the first examination was 22.8%. By performing the examination, calf production increased by 31%, 13.8 calves/bull/year and 24 kg of calves/cow/year. The benefit/cost ratio on the investment with the breeding soundness evaluation was R$ 35.84. The breeding soundness evaluation improves bioeconomic aspects of beef cow-calf systems.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beef cattle; Efficiency; Fertility; Productivity.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000200028

Causes of rejection of beef bulls in breeding soundness evaluation
Provedor de dados: 96
Autores: Menegassi,Silvio Renato Oliveira; Barcellos,Júlio Otávio Jardim; Peripolli,Vanessa; Borges,João Batista Souza; Bernardi,Mari Lourdes.
The objective of this study was to analyze the rates of rejection in the different steps of the breeding soundness evaluation of beef bulls in the state of Rio Grande do Sul, Brazil. The breeding soundness of 22,113 young and mature bulls of 14 beef breeds, participating in the Program of Reproductive Evaluation (PARTO) was evaluated in the experiment. Data concerning to the causes of rejection in the four steps of the breeding soundness evaluation (general physical examination, genital tract examination, semen evaluation and sexual behavior assessment) were analyzed by the Chi-square test and univariate regression analysis. According to year, general physical examination, genital tract examination and semen evaluation determined the rejection of 0.9% to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Behavior assessment; Libido; Mounting capacity; Reproductive assessment.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000700013

Histopathological, immunohistochemical and biomolecular diagnosis of myocarditis due to Clostridium chauvoei in a bovine
Provedor de dados: 65
Autores: Casagrande,Renata Assis; Pires,Prhiscylla Sadanã; Silva,Rodrigo Otávio Silveira; Sonne,Luciana; Borges,João Batista Souza; Neves,Monique Silva; Rolim,Veronica Machado; Souza,Suyene Oltramari de; Driemeier,David; Lobato,Francisco Carlos Faria.
The aim of this study was to report a case of clostridial myocarditis in a bovine in Brazil with emphasis on the pathological findings, isolation and molecular identification associated with the in situ localization of C. chauvoei. The animal, a male Brangus bull with nine months of age, was found dead without prior clinical signs. Multifocal and coalescent areas of necrosis were observed in the myocardium. Rod cells in the cardiac muscle fibers were positive immunostaining for C. chauvoei, while this bacterium was also isolated and identified by polymerase chain reaction (PCR).
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Myonecrosis; Sudden death; Clostridium chauvoei; Myocarditis.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000801472

Indução da atividade cíclica ovariana pós-parto em vacas de corte submetidas à interrupção temporária do aleitamento associada ou não ao tratamento com norgestomet-estradiol
Provedor de dados: 65
Autores: Borges,João Batista Souza; Gregory,Ricardo Macedo.
Este experimento teve como objetivo comparar os efeitos do desmame temporário (DT) por 72 horas associado ou não ao uso de Norgestomet (NOR) e estradiol na fertilidade do estro induzido e no período reprodutivo de vacas de corte acíclicas no pós-parto. O grupo DT (n= 38) era constituído por vacas que tiveram os terneiros separados por 72 horas. O grupo NOR (n= 29) foi constituído por vacas que receberam (dia 0) um implante subcutâneo de Norgestomet e uma aplicação de Valerato de estradiol (5mg) e Norgestomet (3mg), intramuscular. No momento da retirada dos implantes (dia 9), os terneiros foram separados por 72 horas. O intervalo desmame-estro foi significativamente mais curto (P&lt;0,05) no grupo NOR em relação ao grupo DT (50,1 e 86,4 horas,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vaca de corte; Desmame temporário; Norgestomet.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782003000600016