Results 11 to 20 of about 38,290 (306)

Avaliação de esquemas de seleção alternativos para bovinos Zebus de dupla aptidão [PDF]

Revista Brasileira de Zootecnia, 2000
Utilizando-se simulação determinística, foram avaliados seis esquemas de melhoramento, com diferentes grupos de informações: (1) somente características de crescimento, (2) somente características leiteiras, (3) características de crescimento e ...
Raimundo Nonato Braga Lôbo, Fernando Enrique Madalena, Vânia Maldini Penna   +2 more
doaj   +2 more sources

Signatures of positive selection in African Butana and Kenana dairy zebu cattle

PLoS ONE, 2018
Butana and Kenana are two types of zebu cattle found in Sudan. They are unique amongst African indigenous zebu cattle because of their high milk production.
Hussain Bahbahani, Bashir Salim, Faisal Almathen   +2 more
exaly   +2 more sources

Morphological assessment of the Zebu Bororo (Wodaabé) cattle of Niger in the West African zebu framework [PDF]

Archives Animal Breeding, 2017
A total of 357 adult cows and 29 sires belonging to the long-horned Niger Zebu Bororo cattle population were assessed for 13 body measurements and 11 qualitative traits.
M. M. A. Moussa, M. Issa, A. Traoré, M. Grema, M. Hamani, I. Fernández, A. Soudré, I. Álvarez, M. Sanou, H. H. Tamboura, Y. Alhassane, F. Goyache   +11 more
doaj   +2 more sources

Legacies of domestication, trade and herder mobility shape extant male zebu cattle diversity in South Asia and Africa

Scientific Reports, 2018
All tropically adapted humped cattle (Bos indicus or “zebu”), descend from a domestication process that took place >8,000 years ago in South Asia. Here we present an intercontinental survey of Y-chromosome diversity and a comprehensive reconstruction of ...
Lucía Pérez-Pardal, Alejandro Sánchez-Gracia, Vânia Costa   +2 more
exaly   +2 more sources

Production objectives, trait and breed preferences of farmers keeping N’Dama, Fulani Zebu and crossbred cattle and implications for breeding programs

Animal, 2017
Many local livestock breeds in developing countries are being replaced by exotic breeds, leading to a loss of genetic resources. In southern Mali, for the past two decades, a trend towards increasing crossbreeding between the trypanotolerant N'Dama ...
S. Traoré, A. Markemann, Christoph Reiber, H. Piepho, A. V. Zárate   +4 more
exaly   +2 more sources

Signatures of positive selection in East African Shorthorn Zebu: A genome-wide single nucleotide polymorphism analysis

Scientific Reports, 2015
The small East African Shorthorn Zebu (EASZ) is the main indigenous cattle across East Africa. A recent genome wide SNP analysis revealed an ancient stable African taurine x Asian zebu admixture.
Hussain Bahbahani, David Wragg, Curtis P Van Tassell   +2 more
exaly   +2 more sources

Signatures of Selection for Environmental Adaptation and Zebu × Taurine Hybrid Fitness in East African Shorthorn Zebu [PDF]

Frontiers in Genetics, 2017
The East African Shorthorn Zebu (EASZ) cattle are ancient hybrid between Asian zebu × African taurine cattle preferred by local farmers due to their adaptability to the African environment.
H. Bahbahani, Abdulfatai Tijjani, C. Mukasa, D. Wragg, F. Almathen, O. Nash, G. N. Akpa, M. Mbole-Kariuki, S. Malla, Mark Woolhouse, T. Sonstegard, C. V. Van Tassell, M. Blythe, H. Huson, O. Hanotte   +14 more
semanticscholar   +6 more sources

Energy metabolism and partition of lactating Zebu and crossbred Zebu cows in different planes of nutrition

PLOS ONE, 2018
The aim of this study was to determine the energy metabolism and partition of lactating Gyr and F1 Holstein x Gyr (F1 HxG) cows in different planes of nutrition.
P. D. Carvalho, A. L. Borges, R. R. Silva, H. F. Lage, P. A. D. Vivenza, J. Ruas, E. J. Facury Filho, R. L. A. Palhano, L. Gonçalves, I. Borges, E. Saliba, D. Jayme, Antônio Último de Carvalho   +12 more
semanticscholar   +6 more sources

Follicular dynamics in zebu cattle [PDF]

Pesquisa Agropecuária Brasileira, 2000
The aim of this study was to investigate the follicular dynamics during estrous cycle in Gir breed (Bos indicus) cows. Follicular growth and atresia during estrous cycle were evaluated using a portable ultrasound device. Luteal activity was evaluated by serum progesterone levels.
J. H. M. Viana, Ademir de Moraes Ferreira, Wanderlei Ferreira de Sá, Luiz Sérgio de Almeida Camargo   +3 more
  +10 more sources

Body Weight Estimation in Holstein × Zebu Crossbred Heifers: Comparative Analysis of XGBoost and LightGBM Algorithms. [PDF]

Vet Med Sci
This study evaluated the effectiveness of XGBoost and LightGBM algorithms for the purpose of live weight estimation in Holstein × Zebu crossbred heifers. In the analysis performed with a large biometric dataset, both models provided high accuracy, with the XGBoost algorithm standing out with R2 = 0.999 in the training set and R2 = 0.986 in the test set.
Herrera-Camacho J, Tırınk C, Parra-Cortés RI, Bayyurt L, Uskenov R, Omarova K, Makhanbetova A, Chekirov K, Chay-Canul AJ.   +8 more
europepmc   +2 more sources