TAILIEUCHUNG - Báo cáo khoa hoc:" Selection for reduced muscle glycolytic potential in Large White pigs. II. Correlated responses in meat quality and muscle compositional traits"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học thế giới đề tài: Selection for reduced muscle glycolytic potential in Large White pigs. II. Correlated responses in meat quality and muscle compositional traits | 61 Genet. Sei. Evol. 31 1999 61-76 Inra Elsevier Paris Original article Selection for reduced muscle glycolytic potential in Large White pigs. II. Correlated responses in meat quality and muscle compositional traits Catherine Larzula Pascale Le Roya Jean Goguéb André Talmantc Bernard Jacquetd Louis Lefaucheur6 Patrick Ecolane Pierre Selliera Gabriel Moninc a Station de génétique quantitative et appliquée Institut national de la recherche agronomique 78352 Jouy-en-Josas cedex France b Institut national de la recherche agronomique domaine de Galle 18520 Avord France c Station de recherches sur la viande Institut national de la recherche agronomique Theix 63122 St-Genès-Champanelle France d Centre technique de la salaison de la charcuterie et des conserves de viandes 94704 Maisons-Alfort cedex France e Station de recherches porcines Institut national de la recherche agronomique 35590 L Hermitage France Received 3 March 1998 accepted 19 November 1998 Abstract - A selection experiment was conducted over six generations in a purebred French Large White population presumably free of the HALn and RN alleles. Two lines were taken from the same base population and were contemporarily bred one control line C and one line S selected for reduced in vivo glycolytic potential IVGP of the longissimus muscle. Throughout the experiment second-parity animals were slaughtered at 100 kg body weight in order to evaluate the correlated effects of selection on meat quality and muscle compositional traits. Heritability values genetic correlations with the selection criterion and average genetic trends per generation were estimated for all traits. Heritability values for the traits measured on several muscles depended on the muscle. Within muscle heritability estimates for ultimate pH and lightness L value were of the same order. For enzyme activities estimates of heritability were from to for lactate dehydrogenase LDH from Correspondence and reprints Present address Station

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