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Genetic evaluation of clinical mastitis traits in Holstein cattle
udder health mastitis resistance genetic parameters genetic trend
2018/11/23
The results obtained from different models for predicting breeding values for clinical mastitis (CM) in Holstein cattle were compared. CM was recorded in 30 882 lactations of 12 793 cows in 8 herds fr...
Evaluation of gestation length and birth weight of offspring of Polish native cattle breeds in context of estimating genetic parameters
pregnancy birth body weight heritability native breed
2018/11/23
Research material included data on gestation length of 15 436 cows of Polish native breeds. These were: White Backed (BG; 324 records), Polish Red (RP; 5396 records), Polish Black and White (ZB; 3508 ...
Genetic evaluation of growth traits in Nellore cattle through multi-trait and random regression models
body weight genetic parameters growth curves
2018/11/23
We aimed to evaluate different orders of fixed and random effects in random regression models (RRM) based on Legendre orthogonal polynomials as well as to verify the feasibility of these models to des...