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Neither plasma progesterone concentrations nor exogenous eCG affects rates of ovulation or pregnancy in fixed-time artificial insemination (FTAI) protocols for puberal Nellore heifers
(2011-01-01)
The objective was to evaluate the effects of plasma progesterone (P4) concentrations and exogenous eCG on ovulation and pregnancy rates of pubertal Nellore heifers in fixed-time artificial insemination (FTAI) protocols. ...
Follicular dynamics and production of oocytes in young Nellore heifers with energetic supplementation
(Sociedade Brasileira de Zootecnia, 2012-09-01)
To verify the effects of energy supplementation and fat on follicular dynamics, metabolic profile and the production of oocytes, 15 young heifers (Bos taurus indicus) with an average age of 14 months and with an initial ...
Characteristics of forage and feeding behavior of Nellore heifers fed hydrolyzed sugarcane
(Sociedade Brasileira de Zootecnia, 2014)
Pre- and post-weaning injections of bovine somatotropin to optimize puberty achievement of Bos indicus beef heifers
(Oxford Univ Press Inc, 2019-01-01)
The present study evaluated the growth and puberty attainment of Bos indicus heifers administered recombinant bovine somatotropin (bST) or saline injections during preweaning and/or postweaning. On day 0, 177 suckling ...
Early growth, backfat thickness and body condition has major effect on early heifer pregnancy in Nellore cattle
(2022-01-01)
The aim was to evaluate the association between growth, carcass and visual scores traits with precocious calving in Nellore cattle. Birth weight (BW), weight at 120, 210, 365 and 450 days of age, pre and post-weaning average ...
Genomic association for sexual precocity in beef heifers using pre-selection of genes and haplotype reconstruction
(2018-01-01)
Reproductive traits are of the utmost importance for any livestock farming, but are difficult to measure and to interpret since they are influenced by various factors. The objective of this study was to detect associations ...
Puberdade em novilhas Nelore provenientes de duas linhas de seleção para peso
(Universidade Estadual Paulista (UNESP), 2014)
Puberdade em novilhas Nelore provenientes de duas linhas de seleção para peso
(Universidade Estadual Paulista (Unesp), 2014)