Results 61 to 70 of about 29,741 (229)

Genomic Variants Associated With Oocyte and Embryo Production in Dairy Gir Cattle

Animal Genetics, Volume 57, Issue 2, April 2026.
ABSTRACT The use of in vitro fertilization protocols associated with genomic selection increases genetic gain in dairy cattle. The aims of this study were to uncover genetic variants in a specific interval on BTA7 and to investigate their effects on the number of oocytes and embryos in dairy Gir.
Renata de Fatima Bretanha Rocha, Haniel Cedraz de Oliveira, Marta Fonseca Martins, Marco Antônio Machado, João Claudio do Carmo Panetto, Marcos Vinícius Barbosa da Silva, Simone Eliza Facioni Guimarães   +6 more
wiley   +1 more source

B-spline polynomials models for analyzing growth patterns of Guzerat young bulls in field performance tests [PDF]

Animal Bioscience
Objective The aim of this study was to identify suitable polynomial regression for modeling the average growth trajectory and to estimate the relative development of the rib eye area, scrotal circumference, and morphometric measurements of Guzerat young ...
Ricardo Costa Sousa, Fernando dos Santos Magaço, Daiane Cristina Becker Scalez, José Elivalto Guimarães Campelo, Clélia Soares de Assis, Idalmo Garcia Pereira   +5 more
doaj   +1 more source

Interrogation of modern and ancient genomes reveals the complex domestic history of cattle [PDF]

, 2014
The analysis of mitochondrial and nuclear DNA sequence polymorphisms from modern cattle populations has had a profound impact on our understanding of the events surrounding the domestication of cattle.
Achilli, Achilli, Allchin, Allchin, Anderung, Baig, Baker, Bandelt, Bar-Yosef, Beja-Pereira, Bollongino, Bollongino, Bovine Genome Sequencing and Analysis Consortium, Bovine HapMap Consortium, Bradley, Bradley, Brown, Budiansky, Bökönyi, Bökönyi, Carvajal-Carmona, Chen, Clason, Clutton-Brock, Cymbron, de Alba, Decker, Decker, Delgado, Diamond, Dolukhanov, Edwards, Edwards, Edwards, Edwards, Egito, Epstein, FAO, Freeman, Freeman, Gautier, Gautier, Ginja, Giovambattista, Green, Grigson, Grigson, Grigson, Guintard, Götherström, Hanotte, Helmer, Ho, Hourani, Kantanen, Kruglyak, Lai, Larkin, Lenstra, Liron, Loftus, Loftus, MacHugh, MacHugh, MacHugh, Magee, Magee, Maillard, Maillard, Mannen, Marshall, Marshall, Martinez, Matukumalli, McTavish, Meadow, Meadow, Melander, Miller, Miller, Miretti, Mirol, Misra, Naik, Nielsen, Orlando, Paneto, Payne, Pilgrim, Primo, Qanbari, Ramey, Reingruber, Rosenbaum, Rothammer, Rouse, Rowley-Conwy, Shapiro, Smith, Soares, Stock, Stock, Svensson, Tresset, Troy, Uerpmann, Underhill, Utsunomiya, Vavilov, Waterbolk, Wendorf, Wendorf, Wilkins, Zeder, Zeuner, Zhang, Zilhao   +116 more
core   +1 more source

Genotype‐By‐Environment Interaction for Scrotal Circumference in Young Nellore Bulls Under Pasture and Feedlot Conditions and Its Correlation With Days to Calving

Animal Genetics, Volume 57, Issue 2, April 2026.
ABSTRACT Scrotal circumference (SC) is a key reproductive indicator in beef cattle and an important predictor of male puberty and correlated female fertility. In this study, we evaluated young Nellore bulls raised under combinations of pasture and feedlot environments and modeled SC using a “double” reaction norm model. Additive genetic variance for SC
Christiane A. Silva, Annaiza B. Bignardi, Joslaine N. S. G. Cyrillo, Maria E. Z. Mercadante, Mário L. Santana   +4 more
wiley   +1 more source

Effects of Substituting Cassava Pulp with Broken Rice and Cassava Chips in Crossbred Holstein Diets: Rumen Fermentation, Enteric Methane Emission, and Energy Utilization

Animals
This study evaluates the effects of substituting cassava pulp with broken rice and cassava chips in the total mixed ration silage diets of beef cattle on feed composition, ensiling quality, digestibility, and energy utilization.
Jiraporn Kabsuk, Jenwit Nusri-un, Bhoowadol Binsulong, Thidarat Gunha, Kritapon Sommart   +4 more
doaj   +1 more source

Genomic diversity and admixture patterns among six Chinese indigenous cattle breeds in Yunnan [PDF]

Asian-Australasian Journal of Animal Sciences, 2019
Objective Yunnan is not only a frontier zone that connects China with South and Southeast Asia, but also represents an admixture zone between taurine (Bos taurus) and zebu (Bos indicus) cattle.
Rong Li, Chunqing Li, Hongyu Chen, Xuehong Liu, Heng Xiao, Shanyuan Chen   +5 more
doaj   +1 more source

Gastrointestinal helminths in calves and cows in an organic milk production system [PDF]

, 2012
The main aim of this study was to determine the distribution of populations of gastrointestinal helminths in lactating crossbred cows and calves during the grazing season in an organic milk production system.
Amarante AFT, Athanasiadou S, Beasley AM, Busato A, D'Almeida TN, Dimander SO, Gasbarre LC, Gennari SM, Höglund J, Höglund J, Kaneene JB, Lima WS, Oliveira MC, Pimentel Neto M, Thamsborg SM, Thamsborg SM, Ueno H, Vaarst M, Vercruysse J, Weller RF   +19 more
core   +3 more sources

Wolf Presence Disrupts Seasonal Variation in Hair Cortisol Among Free‐Ranging Beef Cattle

Ecology and Evolution, Volume 16, Issue 4, April 2026.
Predators exert indirect effects on prey populations beyond direct predation, but how predator reintroduction restructures prey physiology remains poorly understood. Using hair cortisol analysis in cattle exposed versus unexposed to wolves, we found that wolf presence disrupted normal seasonal cortisol regulation patterns.
Christina M. Nord, Alexander J. Pritchard, Rosemary A. Blersch, Brenda McCowan, Jessica J. Vandeleest, Kenneth W. Tate, Tina L. Saitone   +6 more
wiley   +1 more source

Beef quality of Nellore steers fed dried or rehydrated and ensiled corn or sorghum grains

Revista Colombiana de Ciencias Pecuarias, 2019
Background: Rehydration of grains, such as corn and sorghum, is used to increase nutrient absorption. However, the effect of this practice on meat quality is poorly understood.
Fabiano A. Ferreira, Mario L. Chizzotti, Germán D. R. Zamudio, Mauricio M. Estrada, Marcos V. C. Pacheco, Breno C. Silva, Sebastião C. Valadares-Filho, Rafael T. S. Rodrigues   +7 more
doaj   +1 more source

Trypanosoma (Duttonella) vivax: Its biology, epidemiology, pathogenesis, and introduction in the New World - a review [PDF]

, 2008
The biology, epidemiology, pathogenesis, diagnostic techniques, and history of the introduction of Trypanosoma (Duttonella) vivax in the New World are reviewed.
Desquesnes, Marc, Gonçalves da Costa, Sylvio Celso, Madruga, Claudio Roberto, Osorio, Ana Luiza Alves Rosa, Ribeiro, Laura Raquel Rios, Soares, Cleber Oliveira   +5 more
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