Synthetic Breeds Of Cattle
Mostrando 1-4 de 4 artigos, teses e dissertações.
-
1. Genomic selection in multi-breed dairy cattle populations
ABSTRACT Genomic selection has been a valuable tool for increasing the rate of genetic improvement in purebred dairy cattle populations. However, there also are many large populations of crossbred dairy cattle in the world, and multi-breed genomic evaluations may be a valuable tool for improving rates of genetic gain in those populations. Multi-breed models
R. Bras. Zootec.. Publicado em: 2016-04
-
2. Reproductive deficiency in bulls from synthetic breeds according to the type of crossbreed and the morphology of the Y chromosome
We used 550 Braford and 214 Brangus-lbagé bulls to study the association between Y chromosome morphology and the evaluation of breeding-soundness, karyotyping and breeding records were used to assess Y chromosome morphology. In general, no direct association was detected between the individual type of Y chromosome and reproductive fitness as previously esti
Publicado em: 2010
-
3. Biometria testicular de touros da raça Crioula Lageana / Testicular biometry of the Crioula Lageana breed bulbs
The purpose of this experiment was to study the testicular morphologic parameters of the Crioula Lageana breed bulls, a breed that was threatened by extinction and, nowadays it is in recovery process through an association of creators. The experiment has developed with flocks of genetic preservation of the breed, linked to the Associação Brasileira de Cria
Publicado em: 2006
-
4. Mapping of quantitative trait loci controlling trypanotolerance in a cross of tolerant West African N'Dama and susceptible East African Boran cattle
Trypanosomosis, or sleeping sickness, is a major disease constraint on livestock productivity in sub-Saharan Africa. To identify quantitative trait loci (QTL) controlling resistance to trypanosomosis in cattle, an experimental cross was made between trypanotolerant African N'Dama (Bos taurus) and trypanosusceptible improved Kenya Boran (Bos indicus) catt
National Academy of Sciences.