Results 81 to 90 of about 19,940 (265)

DIVERSIDAD GENÉTICA ENTRE SUBPOBLACIONES RACIALES BOVINAS DE COSTA RICA

open access: yesAgronomía Costarricense, 2015
El objetivo del estudio fue cuantificar la diversidad genética entre 16 subpoblaciones raciales bovinas de Costa Rica, con base en 1412 muestras de ADN bovino de todo el país, evaluadas mediante 18 marcadores microsatélites. El número promedio de alelos (
Marco Martínez   +4 more
doaj  

Impact of livestock grazing on soil potential net C and N mineralization during the dry season in a cultivated subhumid tropical grassland ecosystem

open access: yesEcological Research, Volume 40, Issue 5, September 2025.
To better understand the conservation and soil nutrient availability of complex grazing ecosystems in the subhumid tropics, it is important to explore the livestock species effect on soil C and N transformation patterns across time and during a water pulse in the dry season.
América Ortiz‐Carmona   +4 more
wiley   +1 more source

Human animal relationships in Bos indicus cattle breeds addressed from a Five Domains welfare framework

open access: yesFrontiers in Veterinary Science
The present review has two objectives, the first is to investigate the differences in temperament between Bos indicus and Bos taurus breeds and determining the effects on production due to positive treatment and to compare this with negative HAR, by ...
Daniel Mota-Rojas   +10 more
doaj   +1 more source

Hormonal protocols for in vitro production of Zebu and taurine embryos

open access: yesPesquisa Agropecuária Brasileira, 2014
The objective of this work was to evaluate the effects of hormonal synchronization protocols, associated or not with follicular development stimulation, on the recovery of oocytes and on in vitro production of Bos indicus and B.
Carlos Antônio de Carvalho Fernandes   +7 more
doaj   +1 more source

Le complexe majeur d'histocompatibilité de bovins Ouest africains. Typage d'antigènes lymphocytaires (BoLA) de taurins Baoulé (Bos taurus) et de zébus Soudaniens (Bos indicus) du Burkina Faso (Afrique Occidentale) [PDF]

open access: yes, 1989
Le typage des antigènes lymphocytaires (BoLA) chez 247 taurins Baoulé (Bos taurus) et 106 zébus Soudaniens (Bos indicus), a permis de déterminer les fréquences géniques de 43 spécificités de classe 1, aussi bien officielles mondiales "W" et européennes ...
Kemp, S.J.   +4 more
core  

Short Communication: Influence of estrus activity and reproductive tract size and position scores on fertility in Bos indicus and Bos taurus suckled beef cows [PDF]

open access: bronze, 2022
Savannah L. Speckhart   +6 more
openalex   +1 more source

Cytogenetic and molecular analysis of the Pantaneiro cattle breed Análise citogenética e molecular do bovino Pantaneiro

open access: yesPesquisa Agropecuária Brasileira, 2006
The objective of this work was to characterize Pantaneiro cattle genetically through its paternal ancestry by the morphology of the Y chromosome, whether submetacentric or acrocentric, as well as to identify the maternal ancestry through mitochondrial ...
Érica Cunha Issa   +2 more
doaj   +1 more source

Effect of Fsh β-Sub Unit and Fshr Genes Polymorphisms on Superovulatory Response Traits [PDF]

open access: yes, 2014
Follicle stimulating hormone (FSH) is a pituitary expressed glycoprotein hormone that regulatesreproduction in mammals which composed of α and β-sub unit. The β-sub unit dictates its bindingspecificity with their receptor (FSHR).
Andreas, E. (E)   +5 more
core   +1 more source

Heparin-binding proteins of seminal plasma in Nellore bulls Proteínas ligadoras à heparina do plasma seminal em touros Nelore

open access: yesCiência Rural, 2009
The aim of this study was to identify heparin-binding proteins (HBPs) in seminal plasma of Nellore (Bos taurus indicus) bulls. Bulls (n=4), 30-36 months old, 500-550kg with satisfactory seminal quality were selected.
Carlos Eurico Fernandes   +3 more
doaj  

An attempt to correlate cattle breed origins and diseases associated with or transmitted by the tick Amblyomma variegatum in the French West Indies [PDF]

open access: yes, 1993
A l'aide de données biologiques et de la recherche historique, on a essayé d'expliquer la différence, en ce qui concerne la résistance et la sensibilité aux maladies transmises par (cowdriose) ou associées à (dermatophilose) la tique Amblyomma variegatum,
Accipe, A.   +7 more
core  

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