Livestock

Genetic variability in local Brazilian horse lines using microsatellite markers

A. C. M. Silva, Paiva, S. R., Albuquerque, M. S. M., Egito, A. A., Santos, S. A., Lima, F. C., Castro, S. T., Mariante, A. S., Correa, P. S., and McManus, C. M., Genetic variability in local Brazilian horse lines using microsatellite markers, vol. 11, pp. 881-890, 2012.

Genetic variability at 11 microsatellite markers was analyzed in five naturalized/local Brazilian horse breeds or genetic groups. Blood samples were collected from 328 animals of the breeds Campeira (Santa Catarina State), Lavradeira (Roraima State), Pantaneira (Pantanal Mato-Grossense), Mangalarga Marchador (Minas Gerais State), as well as the genetic group Baixadeiro (Maranhão State), and the exotic breeds English Thoroughbred and Arab.

Single nucleotide polymorphisms in CAPN and leptin genes associated with meat color and tenderness in Nellore cattle

L. F. B. Pinto, Ferraz, J. B. S., Pedrosa, V. B., Eler, J. P., Meirelles, F. V., Bonin, M. N., Rezende, F. M., Carvalho, M. E., Cucco, D. C., and Silva, R. C. G., Single nucleotide polymorphisms in CAPN and leptin genes associated with meat color and tenderness in Nellore cattle, vol. 10, pp. 2057-2064, 2011.

We analyzed single nucleotide polymorphisms in calpain, leptin, leptin receptor, and growth hormone receptor genes and their association with color, drip and cooking losses of longissimus muscle at 7, 14 and 21 days postmortem in 638 purebred Nellore bulls slaughtered between 22 and 26 months of age. Meat samples were vacuum-packed and aged at 4°C. The single nucleotide polymorphisms T945M, GHR2, E2FB, and CAPN4751 were evaluated. All genotypic classes were observed; however, the T/T genotype of T945M and E2FB was found at a low frequency.

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