EurekaMag.com logo
+ Site Statistics
References:
53,869,633
Abstracts:
29,686,251
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

Genetic parameters and trends of carcass traits of Japanese brown cattle



Genetic parameters and trends of carcass traits of Japanese brown cattle



Animal Science & Technology 67(12): 1095-1100



Data of Japanese Brown cattle were collected from Kumamoto, Nagasaki and Akita prefectures of December, 1993. A total of 10,471 carcass data were used to estimate breeding values and genetic parameters for daily carcass weight gain(carcass weight/slaughter age), rib eye area, subcutaneous fat thickness, yield estimate, marbling score, beef colorscore, firmness and texture. Breeding values were estimated by BLUP under an animal model and genetic parameters were estimated by Henderson's method III. The statistical model involved year location (agricultural corporative), sex, individual animal, the slaughter, the linear and quadratic regression of the slaughter months of age. Heritability estimates for carcass traits were as follows; daily carcass weight gain, rib eye area, subcutaneous fat thickness, yield estimate, marbling score, beef color score, firmness and texture 0.225, 0.313, 0.297, 0.397, 0.271, 0.218, 0.247 and 0.195, respectively. The regression coefficients of standardized estimated breeding values of female cattle, that were born from 1975 to 1989, on the traits on the birth year were calculated to examine the genetic trends of female population. The regression coefficients of the daily carcass weight gain, rib eye area, marbling score, beef color score, firmness and texture on the birth year were 0.665, 0.051, 0.030, - 0.016, 0.015 and 0.011, respectively. All coefficients were statistically significant at 1% level. The regression coefficients of estimated breeding values of sire cattle on birth year group was also calculated. But none of the regression coefficients was statistically significicant. The sires with superior breeding values had more progeny than the others. It was suggested that genetic improvement of female population was caused by frequent usage of some superior sires.

(PDF emailed within 1 workday: $29.90)

Accession: 008728496

Download citation: RISBibTeXText



Related references

Sire evaluation and genetic parameters of performance and carcass traits in Japanese Brown cattle. Bulletin of the Faculty of Agriculture, Saga University (62): 79-87, 1987

Genetic parameters for growth and carcass traits in Japanese brown cattle estimated from field records. Journal of Animal Science 74(9): 2112-2116, 1996

Studies on the development of improved strains of Japanese beef cattle. 3. Genetic factors affecting growth and carcass traits of Japanese Brown cattle. Proceedings of the Faculty of Agriculture, Kyushu Tokai University (3): 23-30, 1984

Basic studies on development of excellent strains in japanese beef cattle 3. genetic factors affecting growth and carcass traits of japanese brown cattle. Proceedings of School of Agriculture Kyushu Tokai University (3): 23-30, 1984

Comparison of genetic gains per year for carcass traits among breeding programs in the Japanese Brown and the Japanese Black cattle. Journal of Animal Science 84(2): 317-323, 2006

Genetic and environmental effects on carcass traits of Japanese Brown cattle. Asian Australasian Journal of Animal Sciences 13(1): 1-5, 2000

Genetic relationships between growth and carcass traits and profitability in Japanese Brown cattle. Journal of Animal Science 85(2): 348-355, 2007

Genetic parameters for carcass traits of field progeny and their relationships with feed efficiency traits of their sire population for Japanese Black cattle. Livestock Science 100(2/3): 251-260, 2006

Estimation of genetic parameters for direct genetic effect for carcass traits of Hanwoo (Korean brown cattle) steers. Proceedings of the 7th World Congress on Genetics Applied to Livestock Production, Montpellier, France, August, 2002 Session 2: 0-3, 2002

Genetic parameters of field reproductive and carcass traits in Japanese black cattle. Proceedings of the 7th World Congress on Genetics Applied to Livestock Production, Montpellier, France, August, 2002 Session 2: 0-4, 2002

Estimates of genetic parameters for growth and carcass traits in Japanese Black cattle. Memoirs 109 1-14, 1977

Genetic parameters for growth and carcass traits of Japanese Black (Wagyu) cattle. Animal Science 71(1): 59-64, 2000

Genetic trends in Japanese progeny-tested cattle for carcass traits under station vs. field system. Proceedings of the 7th World Congress on Genetics Applied to Livestock Production, Montpellier, France, August, 2002 Session 2: 0-4, 2002

Genetic parameters of growth and carcass traits of crossbreds between Japanese Black and Holstein cattle. Animal Science and Technology 66(12): 1019-1022, 1995