Detection of linkage between genetic markers and genes that affect growth and carcass traits in pigs
Article Abstract:
The results of a study indicated that marker genes can be used to detect quantitative trait loci (QTL) related to important physiological traits in livestock. Attempts were made to identify the marker genes linkages and the connection of these genes with QTL, for determining growth and carcass traits in pigs. The off-springs of a single boar, heterozygous at four polymorphic marker loci, were studied through linkage analysis. Off-springs that inherited the GPI A allele were found to have higher postweaning weight than pigs that inherited the GPI B allele. Pigs with PGD B allele showed greater muscle firmness than pigs with PGD A allele.
Publication Name: Journal of Animal Science
Subject: Zoology and wildlife conservation
ISSN: 0021-8812
Year: 1992
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Heritabilities and correlations
Article Abstract:
Heritability estimates determined for growth, real-time ultrasonic measures of backfat thickness and longissimus muscle area, carcass characteristics and various pork quality traits indicate that enough genetic variability exists for improvement of meat quality by selection. Genetic correlation between these parameters, however, implied that there is also a potential for decreasing meat quality by selection for lean growth characteristics. Intramuscular fat seems to be a definite factor in determining meat quality which can also be manipulated by careful selection.
Publication Name: Journal of Animal Science
Subject: Zoology and wildlife conservation
ISSN: 0021-8812
Year: 1992
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An embryo transfer study of reciprocal cross differences in growth and carcass traits of Duroc and Landrace pigs
Article Abstract:
The partition of reciprocal cross-differences in growth and carcass traits into those occurring at or before fertilization was determined in pigs using embryo transfer. Test animals were the F1 progeny of Duroc and Landrace crosses. The only reciprocal cross-differences detected were for backfat thickness and longissimus muscle area at the 10th rib in barrows. Embryo transfer results showed that these effects occurred either at or before fertilization. Being manifested only in barrows, they are assumed to be Y-linked.
Publication Name: Journal of Animal Science
Subject: Zoology and wildlife conservation
ISSN: 0021-8812
Year: 1992
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