Results 51 to 60 of about 31,776 (275)

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

Journal of Animal Breeding and Genetics, EarlyView.
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

Estudo genético quantitativo de características de carcaça e perímetro escrotal utilizando inferência Bayesiana em novilhos nelore

Bioscience Journal, 2010
Objetivou-se com este estudo avaliar o método de amostragem de Gibbs (GS) como ferramenta para se estimar os componentes de (co)variância e parâmetros genéticos para características de carcaça e reprodutivas: área de olho de lombo (AOL); espessura de ...
Vanessa Barbosa, Cláudio Ulhoa Magnabosco, José Benedito de Freitas Trovo, Carina de Ubirajara Faria, Dyomar Toledo Lopes, Marco Antônio de Oliveira Viu, Raysildo Barbosa Lôbo, Mariana Márcia Santos Mamede   +7 more
doaj  

Squamous metaplasia of the rete ovarii in a Zebu cow [PDF]

BMC Veterinary Research, 2012
Stratified keratinizing squamous epithelium in the ovary has been associated with the diagnosis of ovarian teratoma in cows. Recently, the diagnosis of "epidermoid cyst" has been proposed. A case of squamous metaplasia of the rete ovarii in a Zebu cow is described in this report.A crossbreed Zebu cow had both ovaries enlarged with multiple cysts.
Santos Renato, Peixoto Dimitre Giancarlo de Medeiros, Turchetti Andréia, Borges Álan, do Nascimento Ernane, Paixão Tatiane   +5 more
openaire   +3 more sources

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

Journal of Animal Breeding and Genetics, EarlyView.
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

No evidence for a recent genetic bottleneck in the endangered Sheko cattle breed (African Bos taurus) revealed by microsatellite analysis [PDF]

, 2009
Sheko is African taurine cattle, valued for its milk yield, adaptation to humid tsetse infested environment and trypanotolerance. We used 30 microsatellite markers in analyzing 30 DNA samples. We found high genetic diversity and no genetic bottlenecks in
Hailu Dadi, Hirofumi Hanada, Joram Mwacharo, Koh Nomura, Markos Tibbo, Takashi Amano, Yukimizu Takahashi   +6 more
core   +1 more source

Madagascar's grasses and grasslands:anthropogenic or natural? [PDF]

, 2016
Grasses, by their high productivity even under very low pCO2, their ability to survive repeated burning and to tolerate long dry seasons, have transformed the terrestrial biomes in the Neogene and Quaternary.
Bosser J, Brummitt RK, Clayton WD, Dransfield S, Drukker DM, ESRI, Faramalala MH, Humbert H, Humbert H, Kellogg EA, Koechlin J, Lewis BA, Maddison WP, Moat J, Morat P, Muasya AM, Nanjarisoa OP, Perrier de la Bâthie H, R Development Core Team, Vollesen K, Vollesen K, Vorontsova MS   +21 more
core   +1 more source

Genetic Parameters of Methane Emission, Feed Efficiency, Feeding Behaviour, and Growth Traits in Beef Cattle

Journal of Animal Breeding and Genetics, EarlyView.
ABSTRACT Climate change has intensified the need to reduce greenhouse gas emissions, particularly methane (CH4) from enteric fermentation. Genetic selection has emerged as a promising mitigation strategy; however, studies on Bos taurus indicus , especially Nellore cattle, remain limited.
J. A. Silva, J. P. S. Valente, L. F. M. Mota, G. R. D. Rodrigues, T. L. S. Soares, J. O. S. Marcatto, A. M. Pelaez, F. M. Monteiro, R. C. Canesin, L. G. Albuquerque, M. E. Z. Mercadante   +10 more
wiley   +1 more source

Effect of polymorphisms in the Slc11a1 coding region on resistance to brucellosis by macrophages in vitro and after challenge in two Bos breeds (Blanco Orejinegro and Zebu)

Genetics and Molecular Biology, 2010
The resistance/susceptibility of selected cattle breeds to brucellosis was evaluated in an F1 population generated by crossing animals classified as resistant (R) and susceptible (S) (R x R, R x S, S x R, S x S) based on challenges in vitro and in vivo ...
Rodrigo Martínez, Susana Dunner, Rubén Toro, Jaime Tobón, Jaime Gallego, Javier Cañón   +5 more
doaj   +1 more source

Genetic Parameters of Resilience Indicators Across Growth in Beef Heifers and Their Associations With Weight, Reproduction, Calf Performance and Pre‐Weaning Survival

Journal of Animal Breeding and Genetics, Volume 143, Issue 1, Page 79-91, January 2026.
ABSTRACT In tropical extensive beef cattle systems, heifers raised on pasture are exposed to various environmental challenges that affect their growth and reproductive performance during the first breeding. Resilience indicators derived from deviations in longitudinal traits can quantify the magnitude of these challenges and the ability of an animal to
Gustavo R. D. Rodrigues, Júlia P. S. Valente, Vanessa T. Rezende, Luis F. C. Araújo, João B. Silva Neto, Lúcio F. M. Mota, Mário L. Santana, Roberta C. Canesin, Sarah F. M. Bonilha, Lucia G. Albuquerque, Maria E. Z. Mercadante, Joslaine N. S. G. Cyrillo   +11 more
wiley   +1 more source

Reactivity of Nellore steers in two feedlot housing systems and its relationship with plasmatic cortisol [PDF]

, 2010
To evaluate reactivity to assess the temperament of Nellore steers in two feedlot housing systems (group pen or individual pen) and its relationship with plasmatic cortisol, 36 experimental units were observed five times at 28-day intervals of weight ...
Gatto, E.G., Nogueira Filho, J.C.M., Noronha, M.S.N., Pereira, A.M.F., Titto, C.G., Titto, E.A.L.   +5 more
core   +1 more source