Results 51 to 60 of about 8,963 (164)

Impact of Model Parameterisation and Variance Component Estimates on Genomic Predictions of Carcass Traits in Montana Composite Cattle

Journal of Animal Breeding and Genetics, Volume 143, Issue 3, Page 431-442, May 2026.
ABSTRACT This study evaluated the influence of variance component (VC) estimates, obtained from different models and two relationship matrices, pedigree‐based (BLUP) and genomic information‐based (ssGBLUP), on genomic predictions of carcass traits in Montana composite cattle.
Caroline Assis Almeida, Felipe Eguti de Carvalho, Flávia Cristina Bis, Rachel Santos Bueno Carvalho, Elisângela Chicaroni de Mattos, Rafael Espigolan, Joanir Pereira Eler, Luís Telo da Gama, Fernando Baldi, José Bento Sterman Ferraz   +9 more
wiley   +1 more source

Genomic Prediction Ability Using Linear and Threshold Approaches for Different Stayability Definitions in Nellore Females

Journal of Animal Breeding and Genetics, Volume 143, Issue 3, Page 457-464, May 2026.
ABSTRACT Enhancing female longevity through regular calvings improves herd replacement rates and reduces the costs associated with replacing low reproductive efficiency animals. Stayability (STAY), defined as a cow's ability to remain productive in the herd, is a categorical trait that challenges traditional genetic evaluation due to its non‐normal ...
Letícia Silva Pereira, Larissa Bordin Temp, Eduarda da Silva Oliveira, Jorge Hidalgo, Cláudio Ulhoa Magnabosco, Fernando Baldi   +5 more
wiley   +1 more source

Caractérisation phénotypique et génétique : le cas du zébu mahorais [PDF]

, 2019
Dans le cadre d'une collaboration entre le CIRAD, la CoopADEM (Coopérative des éleveurs de Mayotte) et la CAPAM (Chambre de l''Agriculture, de la Pêche, et de l'Aquaculture) à Mayotte, une nouvelle race bovine a été caractérisée et ajoutée à la liste ...
Anlidine, Mkadara, Attoumani, Hidachi, Flori, Laurence, Gautier, Mathieu, Janelle, Jérôme, Kamardine, Mchindra, Magnier, Jessica, Naves, Michel, Oussoufi, Abdallah, Ouvrard, Mélissa, Raoul, Solène, Tillard, Emmanuel   +11 more
core  

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

FACTORS AFFECTING HEAT TOLERANCE IN CROSSBRED CATTLE IN CENTRAL BRAZIL

Ciência Animal Brasileira, 2014
This study compared the adaptation traits in common crosses of crossbred dairy cattle in central Brazil. Twenty animals of each of three genetic groups were used: zebu (Bos indicus), Simmental x Zebu (SZ) and Holstein x Zebu (HZ).
Concepta Margaret McManus, Helder Louvandini, Tiago Prado Paim, Flávia Cristina Paula e Silva, Francisco Ernesto Moreno Bernal   +4 more
doaj   +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

Composição corporal e exigências energéticas e protéicas de bovinos mestiços leiteiros e zebu, castrados, em regime de recria e engorda Body composition and energy and protein requirements of dairy crossbreeds and zebu bovines, castrated, in the growing and fattening phases

Revista Brasileira de Zootecnia, 2005
Para determinar as exigências energéticas e protéicas de animais mestiços leiteiros e zebu, castrados, nas fases de recria e engorda, foram utilizados 47 bovinos machos castrados, com peso vivo médio de 266 kg, sendo 16 zebu e 31 mestiços leiteiros (16 ...
Alfredo Acosta Backes, Mário Fonseca Paulino, Dorismar David Alves, Luciana Navajas Rennó, Sebastião de Campos Valadares Filho, Rogério de Paula Lana   +5 more
doaj   +1 more source

On the origin of Indonesian cattle. [PDF]

PLoS ONE, 2009
BACKGROUND: Two bovine species contribute to the Indonesian livestock, zebu (Bos indicus) and banteng (Bos javanicus), respectively. Although male hybrid offspring of these species is not fertile, Indonesian cattle breeds are supposed to be of mixed ...
Kusdiantoro Mohamad, Mia Olsson, Helena T A van Tol, Sofia Mikko, Bart H Vlamings, Göran Andersson, Heriberto Rodríguez-Martínez, Bambang Purwantara, Robert W Paling, Ben Colenbrander, Johannes A Lenstra   +10 more
doaj   +1 more source

La brucellose bovine en Afrique centrale. III. Résultats statistiques des enquêtes menées au Tchad et au Cameroun [PDF]

, 1982
Les résultats statistiques obtenus lors d'enquêtes menées au Tchad et au Cameroun, de 1976 à 1980, sur la brucellose bovine sont exposés. Sur 14 344 sérums de femelles reproductrices analysés, plus de 30 p. 100 s'avèrent positifs (E.A.T.).
Bonnet, J.B., Domenech, Joseph, Hentic, Alain, Lucet, Philippe, Stewart, C., Vallat, B.   +5 more
core  

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