+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ PDF Full Text
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Translate
+ Recently Requested

Estimation of inbreeding and effective population size of full-blood wagyu cattle registered with the American Wagyu Cattle Association

Estimation of inbreeding and effective population size of full-blood wagyu cattle registered with the American Wagyu Cattle Association

Journal of Animal Breeding and Genetics 131(1): 3-10

The objective of this research was to examine the population structure of full-blood (100%) Wagyu cattle registered in the United States with the American Wagyu Association, with the aim of estimating and comparing the levels of inbreeding from both pedigree and genotypic data. A total of 4132 full-blood Wagyu cattle pedigrees were assessed and used to compute the inbreeding coefficients (F-IT and F-ST) and the effective population size (N-e) from pedigree data for the period 1994 to 2011. In addition to pedigree analysis, 47 full-blood Wagyu cattle representing eight prominent sire lines in the American Wagyu cattle population were genotyped using the Illumina BovineSNP50 BeadChip. Genotypic data were then used to estimate genomic inbreeding coefficients (F-ROH) by calculating runs of homozygosity. The mean inbreeding coefficient based on the pedigree data was estimated at 4.80%. The effective population size averaged 17 between the years 1994 and 2011 with an increase of 42.9 in 2000 and a drop of 1.8 in 2011. Examination of the runs of homozygosity revealed that the 47 Wagyu cattle from the eight prominent sire lines had a mean genomic inbreeding coefficient (F-ROH) estimated at 9.08% compared to a mean inbreeding coefficient based on pedigree data of 4.8%. These data suggest that the mean genotype inbreeding coefficient of full-blood Wagyu cattle exceeds the inbreeding coefficient identified by pedigree. Inbreeding has increased slowly at a rate of 0.03% per year over the past 17years. Wagyu breeders should continue to utilize many sires from divergent lines and consider outcrossing to other breeds to enhance genetic diversity and minimize the adverse effects of inbreeding in Wagyu.

(PDF emailed within 0-6 h: $19.90)

Accession: 066281265

Download citation: RISBibTeXText

PMID: 24373025

DOI: 10.1111/jbg.12066

Related references

Estimation of inbreeding and effective population size of fullblood Wagyu cattle registered with the American Wagyu Association. Journal of Dairy Science 93: 37-37, 2010

Palatability of japanese wagyu american wagyu angus longhorn and choice beef. Journal of Animal Science 70(SUPPL 1): 117, 1992

Studies on the balance of inorganic elements in grassland agriculture. 5. On the relationships between grass tetany of Wagyu (Japanese cattle) and the inorganic balance of the soil, fertilizer and forage on the Wagyu farm. Journal of the College of Dairying 7(2): 289-306, 1978

Estimation of Inbreeding Coefficients and Effective Population Size in Breeding Bulls of Hanwoo(Korean Cattle). Journal of Animal Science and Technology 53(4): 297-302, 2011

Wagyu beef aroma in Wagyu (Japanese Black Cattle) beef preferred by the Japanese over imported beef. Animal Science Journal 72(6): 498-504, 2001

Breeding improvement of Japanese black cattle (Wagyu cattle). 1978

Estimation of inbreeding increase and effective population size of Murnau-Werdenfelser and German Simmental cattle from marker gene frequencies. Zuchtungskunde 60(4): 288-299, 1988

Estimation of percentage of lean meat on rib loin by computer image analysis for carcass cross section of Wagyu cattle. Journal of Dairy Science 87: 17-17, 2004

Mapping of quantitative trait loci for carcass traits in a Japanese Black (Wagyu) cattle population. Animal Genetics 37(1): 51-54, 2006

Genome wide association study identifies SNPs associated with fatty acid composition in Chinese Wagyu cattle. Journal of Animal Science and Biotechnology 10: 27, 2019

Estimation of linkage disequilibrium levels and haplotype block structure in Chinese Simmental and Wagyu beef cattle using high-density genotypes. Livestock Science 190: 1-9, 2016

Growth and carcass characteristics of lot-fed Wagyu beef cattle and the estimation of homozygosity from band sharing patterns of random amplified polymorphic DNA markers. Poultry Science 86: 189-190, 2007

Relationship between Japanese beef marbling standard and intramuscular lipid in the M. longissimus thoracis of Japanese Black and American Wagyu Cattle. Meat Science 38(2): 361-364, 1994

Some aspects of growth in Wagyu cattle. Japanese Journal of Zootechnical Science 47(10): 561-569, 1976

Genetic improvement of Wagyu cattle. Scientific Reports of the Faculty of Agriculture, Okayama ( 81): 101-122, 1993