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Effects of low-moisture, sugarcane molasses-based block supplementation on growth, physiological parameters, and liver trace mineral status of growing beef heifers fed low-quality, warm-season forage
(Oxford Univ Press Inc, 2019-01-01)
The objectives of the study were to evaluate the growth, physiological parameters, and liver trace mineral status of beef heifers provided low-quality warm-season forage and different forms (meal vs. block) of trace ...
Performance and carcass traits of heifers Rubia Gallega x Nellore supplemented with chromium picolinate
(2019-06-30)
The objective was to evaluate the productive performance and the carcass traits of Nellore (NEL) and Rubia Gallega x Nellore F1 (NRG) heifers, subjected to energy-protein supplementation with chromium picolinate (CrP). ...
COMPARISONS BETWEEN INTAKE VALUES OBSERVED AND PREDICTED BY NUTRITIONAL SYSTEMS FOR CONFINED NELLORE CATTLE
(2021-01-12)
This study compared the dry matter intake (DMI) of Nellore heifers and bulls in the feedlot, predicted by the BR-Corte (2010 and 2016) and NRC (2000) nutritional systems. Hence, two experiments were conducted in a completely ...
Prospecting polymorphisms in the PPP3CA and FABP4 genes and their association with early pregnancy probability in Nellore heifers
(2017-09-01)
Early pregnancy probability (P16) in heifers is a trait of high economic value for beef cattle production. Early pregnancy is defined based on the conception and calving of a heifer given that the animal had entered the ...
Implications of growth rates and compensatory growth on puberty attainment in Nellore heifers
(2021-01-01)
This study investigated the effects of growth rates and compensatory growth on puberty attainment in Nellore heifers. Nellore heifers (n = 120), weaned at 8 ± 0.75 mo of age, were blocked by sire and BW (180 ± 8.6 kg) and ...
Effect of progesterone concentrations, follicle diameter, timing of artificial insemination, and ovulatory stimulus on pregnancy rate to synchronized artificial insemination in postpubertal Nellore heifers
(Elsevier B.V., 2014-02-01)
Two experiments were designed to evaluate the effects of treatments with low versus high serum progesterone (P-4) concentrations on factors associated with pregnancy success in postpubertal Nellore heifers submitted to ...
Effect of interval from induction of puberty to initiation of a timed AI protocol on pregnancy rate in Nellore heifers
(Elsevier B.V., 2014-09-15)
Prepubertal Bos indicus heifers (n = 774) were submitted to an E-2/P-4-based timed artificial insemination (TAI) protocol at three different intervals after induction of their pubertal ovulation by insertion of an intravaginal ...
Genetic correlations between heifer subsequent rebreeding and age at first calving and growth traits in Nellore cattle by Bayesian inference
(Funpec-editora, 2012-01-01)
We estimated heritability for subsequent rebreeding (SR) of heifers and genetic correlations between this trait and weaning weight (WW), weight gain from weaning to yearling (WG), age at first calving (AFC), and mature cow ...
Genome-wide scan highlights the role of candidate genes on phenotypic plasticity for age at first calving in Nellore heifers
(2020-12-01)
Age at first calving (AFC) plays an important role in the economic efficiency of beef cattle production. This trait can be affected by a combination of genetic and environmental factors, leading to physiological changes ...