Brahman

Association of bovine Toll-like receptor 4 with tick infestation rates and blood histamine concentration

G. Zhao, Yu, M., Cui, Q. - W., Zhou, X., Zhang, J. - C., Li, H. - X., Qu, K. - X., Wang, G. - L., and Huang, B. - Z., Association of bovine Toll-like receptor 4 with tick infestation rates and blood histamine concentration, vol. 12, pp. 2783-2793, 2013.

We investigated a possible association between bovine Toll-like receptor 4 (TLR4) and resistance to tick infestation in 103 cattle, including BMY cattle (1/2 Brahman, 1/4 Murray Grey, and 1/4 Yunnan Yellow cattle), Brahman, and Red Angus grazing on improved pasture. The tick infestation weight and number of Rhipicephalus microplus and the blood histamine concentration were measured and compared with those of 32 Chinese Holsteins and 30 Simmentals. A 228-bp fragment was amplified and sequenced to analyze the polymorphisms of the TLR4 gene.

Evaluation of DNA polymorphisms involving growth hormone relative to growth and carcass characteristics in Brahman steers

V. R. Beauchemin, Thomas, M. G., Franke, D. E., and Silver, G. A., Evaluation of DNA polymorphisms involving growth hormone relative to growth and carcass characteristics in Brahman steers, vol. 5, pp. 438-447, 2006.

Associations of DNA polymorphisms in growth hormone (GH) relative to growth and carcass characteristics in growing Brahman steers (N = 324 from 68 sires) were evaluated. Polymorphisms were an Msp-I RFLP and a leucine/valine SNP in the GH gene as well as a Hinf-I RFLP and a histidine/arginine SNP in transcriptional regulators of the GH gene, Pit-1 and Prop-1. Genotypic frequencies of the GH SNP, Pit-1 RFLP, and Prop-1 SNP were greater than 88% for one of the bi-allelic homozygous genotypes.

Subscribe to Brahman