Results 81 to 90 of about 18,392 (211)

Produção de Leite em Primíparas de Bovinos Hereford e Desenvolvimento Ponderal de Terneiros Cruzas Taurinos e Zebuínos

Revista Brasileira de Zootecnia, 2002
O objetivo deste trabalho foi avaliar a produção de leite de vacas de corte primíparas e o desenvolvimento ponderal dos terneiros de dois genótipos entre o nascimento e o desmame.
Mendonça Gilson de, Pimentel Marcelo Alves, Cardellino Ricardo Alberto, Osório José Carlos da Silveira   +3 more
doaj  

Frequencies of polymorphisms associated with BSE resistance differ significantly between Bos taurus, Bos indicus, and composite cattle

BMC Veterinary Research, 2008
Background Transmissible spongiform encephalopathies (TSEs) are neurodegenerative diseases that affect several mammalian species. At least three factors related to the host prion protein are known to modulate susceptibility or resistance to a TSE: amino ...
Seabury Christopher M, Greenlee Justin J, Brunelle Brian W, Brown Charles E, Nicholson Eric M   +4 more
doaj   +1 more source

An assessment of population structure in eight breeds of cattle using a whole genome SNP panel

BMC Genetics, 2008
Background Analyses of population structure and breed diversity have provided insight into the origin and evolution of cattle. Previously, these studies have used a low density of microsatellite markers, however, with the large number of single ...
Gao Chuan, Gill Clare A, Neto Emmanuel, Crews Denny, Coppieters Wouter, Aerts Jan, Matukumalli Lakshmi K, Murdoch Brenda M, Schnabel Robert D, McKay Stephanie D, Mannen Hideyuki, Wang Zhiquan, Van Tassell Curt P, Williams John L, Taylor Jeremy F, Moore Stephen S   +15 more
doaj   +1 more source

Milk and fat production of crossbred Holstein-Gir cows (Bos taurus taurus-Bos taurus indicus) in the agreste region of the Brazilian state of Pernambuco

, 2008
The productive performance of four Holstein-Gir genetic groups (1/2H, 1/4H, 5/8H, 5/8Hinter se) and the effects of non-genetic factors on production traits was evaluated using a data set of 7,951 test-day samples collected between January 1980 and ...
S. Barbosa, R. Ramalho, H. Monardes, F. M. Dias, D. C. Santos, Â. Batista   +5 more
semanticscholar   +1 more source

Frecuencias alélicas para variantes SNP en el gen Nramp1 en bovinos infectados con Brucella abortus o clasificados por resistencia al patógeno

Ciencia y Tecnología Agropecuaria, 2009
La resistencia natural a la brucelosis en bovinos ha sido asociada a factores genéticos, principalmente a algunos polimorfismos de nucleótido simple ubicados dentro del gen Nramp1.
Fernando Cerquera, Rodrigo Martínez, Rubén Toro, Jaime Tobón, Jaime Gallego, Esperanza Rueda   +5 more
doaj   +1 more source

TERMORREGULAÇÃO ESCROTAL EM TOUROS NELORE (Bos taurus indicus)

, 2014
The aim of this study was to determine the scrotal surface temperature with the use of infrared thermography camera in Nellore bulls under field conditions, before and after collection of semen.
Camila Dutra de Souza, Marcelo George Mungai Chacur, Felipe Rydygier de Ruediger, Júnia de Souza Cartocci, Isamara Batata Andrade, Guilherme Pepino Bastos, E. Oba, A. A. Ramos   +7 more
semanticscholar   +1 more source

Is maternal defensiveness of Gyr cows (Bos taurus indicus) related to parity and cows' behaviors during the peripartum period? [PDF]

PLoS One, 2022
Vicentini RR, El Faro L, Ujita A, Lima MLP, Oliveira AP, Sant'Anna AC.   +5 more
europepmc   +1 more source

Relationship between racial predominance and ectoparasites in crossbreed cattle herds in a dry tropical weather. Technical note

Revista Científica
To estimate the ectoparasites prevalence and assess the impact of the racial predominance of Bos taurus taurus, Bos taurus indicus, and their crossbreeds on this prevalence in dual- purpose cattle herds in a tropical dry weather in Venezuela, a cluster ...
Jennifer Cedeño-Macías, Víctor Montes-Zambrano, Francisco Angulo-Cubillán   +2 more
doaj   +1 more source

Dynamics of the Reproductive Changes and Acquisition of Oocyte Competence in Nelore (Bos taurus indicus) Calves during the Early and Intermediate Prepubertal Periods [PDF]

Animals (Basel), 2022
Kawamoto TS, Viana JHM, Pontelo TP, Franco MM, de Faria OAC, Fidelis AAG, Vargas LN, Figueiredo RA.   +7 more
europepmc   +1 more source

Fertility of Bos indicus and Bos indicus x Bos taurus crossbreed cattle after estrus synchronization.

Theriogenology, 2012
Ninety-five cows (79 Boran and 16 Boran-Brahman crossbreeds) and 107 heifers (55 Boran and 52 Boran x Friesian F1 crossbreeds) were used to determine estrus response, estrus response interval and pregnancy rate following synchronization with prostaglandin (PGF(2)alpha), a progesterone-releasing intravaginal device (PRID) and Synchro-mate B (SMB).
Tegegne, Azage, Warnick, A.C., Mukasa-Mugerwa, E., Ketema, H.   +3 more
openaire   +2 more sources