Association analysis of MC1R, MC4R and AGRP in beef cattle

View/ Open
Date
2009-12Author
McLean, Kim Lauren
Type
ThesisDegree Level
DoctoralMetadata
Show full item recordAbstract
Three interrelated genes postulated to affect economically important traits related to growth and/or carcass quality of beef cattle were chosen to characterize and perform association analyses for this study. Melanocortin 1 receptor (MC1R), melanocortin 4 receptor (MC4R) and agouti related protein (AGRP) play an integral role in the appetite pathway and in fat deposition.
We genotyped 328 crossbred steers of various coat colours that were purchased at weaning and fed until slaughter for the previously published alleles ED, E+ and e. The E+ allele was present at five percent in this population and therefore was not included in further analysis. Black cattle of ED/ED or ED/e genotype had increased backfat (P
Degree
Doctor of Philosophy (Ph.D.)Department
Animal and Poultry ScienceProgram
Animal and Poultry ScienceSupervisor
Schmutz, Sheila M.Committee
Buchanan, Fiona C.; McKinnon, John J.; Shand, Phyllis J.; Laarveld, Bernard; Casas, EduardoCopyright Date
December 2009Subject
carcass fat
grade fat
days on feed
lean meat yield
coat colour
coat color