Genetic statistical analysis of carcass traits and serum total cholesterol of Japanese black beef cattle entered in the meat fairs in Yamagata prefecture [Japan]
2003
Watanabe, D. (NOSAI Yamagata Veterinary Training Center (Japan)) | Abe, M. | Saito, H. | Abe, S. | Itagaki, M. | Abe, S. | Uematsu, M. | Endo, S. | Hirano, T. | Sugimoto, Y.
ABSTRACT The present study was performed to estimate the genetic parameters and the breeding values (BV) of the carcass traits and serum total cholesterol (TC) values for 1,132 head of Japanese Black beef cattle entered in meat fairs in Yamagata Prefecture from 1997 to 2000. As a result, it was found that high hereditary correlation was seen between serum TC and hot carcass weight (carcass wt.) and beef marbling standard (BMS). Heritability of serum TC and also carcass wt. were high. 0.85 and 0.66, respectively. Heritability of BMS was O.34. The constant effects of carcass wt and serum TC differed significantly depending on sex and seasons. Negative correlation was seen in heifers, and in July and September; conversely positive correlations were seen in steers and in November. Findings suggested that carcass characteristics were influenced by hereditary factors and seasons, and serum TC was seen to be a useful biochemicalmonitoring marker to estimate carcass wt and BMS.
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