BIMODAL DISTRIBUTION OF THE MUSCLE GLYCOLYTIC POTENTIAL IN FRENCH AND SWEDISH POPULATIONS OF HAMPSHIRE CROSSBRED PIGS

被引:67
作者
FERNANDEZ, X
TORNBERG, E
NAVEAU, J
TALMANT, A
MONIN, G
机构
[1] SWEDISH MEAT RES INST, S-24424 KAVLINGE, SWEDEN
[2] SCA PEN AR LAN, F-35380 PLELAN LE GRAND, FRANCE
[3] INRA, MEAT RES CTR, F-63122 CEYRAT, FRANCE
关键词
PIG; HAMPSHIRE CROSSBRED; LONGISSIMUS MUSCLE; BIOPSY; GLYCOGEN; GLYCOLYTIC POTENTIAL; RN+/RN- GENE; TECHNOLOGICAL QUALITY; COOKED HAM YIELD;
D O I
10.1002/jsfa.2740590306
中图分类号
S [农业科学];
学科分类号
09 ;
摘要
The distribution of m longissimus dorsi glycolytic potential (an estimator of resting glycogen content) was studied in two pig populations containing Hampshire blood, one in France and one in Sweden. The glycolytic potential was determined on biopsy samples taken using a shot biopsy technique. Napole yield measurements (NY, an indicator of the technological yield of cured cooked ham processing) were available for a part of the French population. The mean values of glycolytic potential were high in both populations (268 +/- 61 and 226 +/- 60 mumol g-1 for the Swedish population and the French population, respectively). In both populations, glycolytic potential distribution was markedly bimodal, suggesting that this trait is affected by a major gene. Pigs considered as RN- carriers on the basis of the NY value (NY < 91 %) had higher glycolytic potential values than those considered as rn+ homozygotes (NY greater-than-or-equal-to 91 %). The results suggest that the gene affecting the muscle glycolytic potential and the major gene rn+/RN known to influence meat quality are identical, the dominant allele RN- increasing muscle glycogen content.
引用
收藏
页码:307 / 311
页数:5
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