Effects of CSN3 and LGB gene polymorphisms on production traits in beef cattle

Rogério A. Curi, Henrique N. de Oliveira, Marcos A. Gimenes, Antonio C. Silveira, Catalina R. Lopes
2005 Genetics and Molecular Biology  
The objective of the present study was to estimate the allele and genotype frequencies of the CSN3/HinfI and LGB/HaeIII gene polymorphisms in beef cattle belonging to different genetic groups, and to determine the effects of these polymorphisms on growth and carcass traits in these animals, which are submitted to an intensive production model. Genotyping was performed on 79 Nelore, 30 Canchim (5/8 Charolais + 3/8 Zebu) and 275 crossbred cattle originating from the crosses of Simmental (n = 30)
more » ... Simmental (n = 30) and Angus (n = 245) sires with Nelore females. Body weight, weight gain, dressing percentage, longissimus dorsi area and backfat thickness were fitted using the GLM procedure, and least square means of the genotypes were compared by the F test. The results showed that the CSN3/HinfI and LGB/HaeIII polymorphisms did not have any effect on growth or carcass traits (p > 0.05).
doi:10.1590/s1415-47572005000200015 fatcat:hdajw5okubba5ipskptpmdfqve