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Reproductive cycles in Bos indicus cattle
(Elsevier B.V., 2011-04-01)
Several studies using transrectal ovarian ultrasonic scanning in Bos taurus (B. taurus) cattle and more recently in Bos indicus (B. Indicus) females evaluated the reproductive cycles of heifers and cows under different ...
Growth hormone mRNA expression in the pituitary of Bos indicus and Bos taurus x Bos indicus crossbred young bulls treated with recombinant bovine somatotropin
(2002-12-01)
The effects of breed and of recombinant bovine somatotropin (rbST) treatment on growth hormone gene expression were studied in young bulls. The experiment was completely randomized in a [2 × 2]-factorial arrangement, using ...
Digestibilidade dos nutrientes de uma ração completa, em bovinos de diferentes grupos genéticos
(Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA), 2002-03-01)
Avaliou-se a digestibilidade dos nutrientes de uma ração completa fornecida a bovinos de diferentes grupos genéticos. A digestibilidade foi estimada pela Lignina em Detergente Ácido, em delineamento de blocos ao acaso, com ...
Assessment of GH1, CAPN1 and CAST polymorphisms as markers of carcass and meat traits in Bos indicus and Bos taurus-Bos indicus cross beef cattle
(Elsevier B.V., 2010-12-01)
The objective of this study was to investigate the effects of bovine GH1, CAPN1 and CAST gene polymorphisms on carcass and meat traits in Nellore and Nellore x Bos taurus beef cattle. Three hundred animals were genotyped ...
Screening of biotechnical parameters for production of bovine inter-subspecies embryonic chimeras by the aggregation of tetraploid Bos indicus and diploid crossbred Bos taurus embryos
(2016-03-01)
The aggregation of a tetraploid zebu embryo (Bos indicus, a thermotolerant breed) with a diploid taurine embryo (Bos taurus, a thermosensitive breed) should create a complete taurine fetus, whose extra-embryonic components, ...
Localization patterns of steroid and luteinizing hormone receptors in the corpus luteum of Nelore (Bos taurus indicus) cows throughout the estrous cycle
(2013-08-01)
The aim of the present study was to detect progesterone receptors (A and B isoforms), α and β estrogen receptors, luteinizing hormone receptors and aromatase cytochrome P450 enzymes in the corpus luteum of Nelore (Bos ...
Overlapping haplotype blocks indicate shared genomic regions between a composite beef cattle breed and its founder breeds
(2021-12-01)
The Canchim composite breed was developed in Brazil combining the attributes of adaptation to the tropical environment of the Nelore breed with the growth performance of the Charolais breed. We aimed to identify overlapping ...
Influence of sire and sire breed (Gyr versus Holstein) on establishment of pregnancy and embryonic loss in lactating Holstein cows during summer heat stress
(Elsevier B.V., 2007-03-01)
Heat stress has negative effects on pregnancy rates of lactating dairy cattle. There are genetic differences in tolerance to heat stress; Bos taurus indicus (B. t. indicus) cattle and embryos are more thermotolerant than ...
BILL E. KUNKLE INTERDISCIPLINARY BEEF SYMPOSIUM: Temperament and acclimation to human handling influence growth, health, and reproductive responses in Bos taurus and Bos indicus cattle
(Amer Soc Animal Science, 2014-12-01)
Temperament in cattle is defined as the fear-related behavioral responses when exposed to human handling. Our group evaluates cattle temperament using 1) chute score on a 1 to 5 scale that increases according to excitable ...
Effect of the genetic group, production system and sex on the meat quality and sensory traits of beef from crossbred animals
(2017-08-01)
The crossbreeding of two or more breeds from the Bos taurus and Bos indicus species is an alternative for obtaining high-quality meat from animals adapted to tropical climates. Quality and sensory attributes of beef, mainly ...