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Mostrando ítems 31-40 de 3022
Genetic evaluation of the probability of pregnancy at 14 months for Nellore heifers
(Amer Soc Animal Science, 2002-04-01)
To estimate the heritability for the probability that yearling heifers would become pregnant, we analyzed the records of 11,487 Nellore animals that participated in breeding seasons at three farms in the Brazilian states ...
Genetic evaluation of the probability of pregnancy at 14 months for Nellore heifers
(Amer Soc Animal Science, 2002-04-01)
To estimate the heritability for the probability that yearling heifers would become pregnant, we analyzed the records of 11,487 Nellore animals that participated in breeding seasons at three farms in the Brazilian states ...
Genetic evaluation of the probability of pregnancy at 14 months for Nellore heifers
(2002-01-01)
To estimate the heritability for the probability that yearling heifers would become pregnant, we analyzed the records of 11,487 Nellore animals that participated in breeding seasons at three farms in the Brazilian states ...
Risk factors of S. aureus intramammary infection in pre partum dairy heifers under grazing conditions and molecular characterization of isolates from heifers and cows
(Cambridge University Press, 2020-02)
The aims of the research reported here were to identify potential risk factors associated with the presence of Staphylococcus aureus intramammary infection (IMI) in pre partum dairy heifers on 17 dairy farms from three ...
Effect of early luteolysis in progesterone-based Al protocols in Bos indicus, Bos indicus x Bos taurus and Bos taurus heifers
(ELSEVIER SCIENCE INC, 2008)
The objective of this study was to evaluate the effects of treatment with an intravaginal progesterone-releasing device (CIDR) and estradiol benzoate (EB) on follicular dynamics in Bos indicus (n = 23), Bos taurus (n = ...
Plasma progesterone concentration in beef heifers receiving exogenous glucose, insulin, or bovine somatotropin
(Amer Soc Animal Science, 2013)
Effects of nutrient intake level on mammary parenchyma growth and gene expression in crossbred (Holstein × Gyr) prepubertal heifers
(Journal of Dairy Science, 2018)
Evaluation of productivity of sexually precocious Nelore heifers
(Cambridge Univ Press, 2015-06-01)
The objectives of the present study were to investigate the influence of yearling weight on the occurrence of early pregnancy and to determine differences between precocious and non-precocious heifers in terms of pre- and ...