Buscar
Mostrando ítems 21-30 de 2314
Variance heterogeneity for milk yield in Brazilian and Colombian Holstein herds
(2004-04-01)
Heterogeneity of variances for milk yield (MY) was determined for Brazilian and Colombian herds. The herds were grouped as high or low variability within each country, using as criterion the phenotypic standard deviation ...
Chemical composition, hygiene characteristics, and coagulation aptitude of milk for Parmigiano Reggiano cheese from herds yielding different milk levels
(Brazilian Journal of Animal Science, 2022)
Zootechnical and economic performance indexes of dairy herds with different production scales
(2018-01-01)
This study aims to estimate the zootechnical and economic benchmarks of milk production systems, analyze production scale effects on dairy farming returns, and identify the system components that best represent the total ...
Estimation of prevalence and incidence of subclinical mastitis in a large population of Brazilian dairy herds
(Elsevier B.V., 2017-08-01)
The objectives of this study were to estimate the prevalence and incidence of subclinical mastitis (SM) in a large population of Brazilian dairy herds and to describe how these indices changed over time. A data set comprising ...
Longitudinal study of bovine rotavirus group A in newborn calves from vaccinated and unvaccinated dairy herds
(2017-04-01)
Reports of rotavirus excretion in calves usually result from cross-sectional studies, and in face of the conflicting results regarding protection of calves born to vaccinated dams against diarrhea, the aim of the present ...
BIRTH WEIGHT AND HEIGHT AT THE WITHERS OF PUREBRED AND GRADE HOLSTEIN HEIFER CALVES OF THE AGRICULTURAL EXPERIMENT STATION HERDBIRTH WEIGHT AND HEIGHT AT THE WITHERS OF PUREBRED AND GRADE HOLSTEIN HEIFER CALVES OF THE AGRICULTURAL EXPERIMENT STATION HERD
(University of Puerto Rico Mayagüez Campus Agricultural Experiment Station, 1968)
Aspectos zootécnicos e sanitários de propriedades leiteiras do munícipio de Itaperuna (RJ) em 2005
(Universidade Federal de Minas GeraisUFMG, 2007-03-14)
The subject of this study is dairy cattle raising in Itaperuna, Northwest region of the state of Rio de Janeiro and the purpose of the exercise is to help the dairy farmers of this part of the country. The research was ...
Selección y mejoramiento de Hato lechero
(IICA, 1971)
Esta publicación posee información sobre criterios acerca de desarrollo de aquellos cursos esenciales en el adiestramiento para la producción animal y pastos.
Primera parte: Recopilación de puntos importantes en el ...