[en] Concentration of plasma insulin has been determined by radioimmunoassay in conventional and double-muscled bulls at 80 (I1), 131 (I2), 227 (I3) and 370 I(4) d of age. Double-musceld have lower plasma levels of insulin at all ages studied, which is consistent with the reduced fatty tissue of double-muscling. The correlations between insulin level and growth traits, estimated separately fo reach type of bulls, are low and most often positive and significant in double-muscled. Insulin level tends to be negatively correlated with the lean percent from the 7th rib cut. The correlation between the successive insulin levels are generally positive. The correlations between the concentration of insulin and of GH are low and negative. [fr] L'insuline pasmatique a été dosée par radioimmunoessai chez des taureaux conventionnels et culards aux âges moyens de 80 (I1), 131 (I2), 227 (I3) and 370 I(4) jours. Les culards ont des taux inférieurs à tous les âges étudiés, cette observation concorde avec leur faible développement adipeux. Les corrélations, séparément pour chacun des types, entre l'insuline plasmatique et les caractères de croissance sont faibles et plus souvent positives et significatives chez les culards. Les corrélations entre le taux d'insuline et le pourcentage de muscles du 7e monocostal sont faibles et négatives. Les corrélations entre les taux successifs d'insuline sont généralement positives. Les taux plasmatiques d'insuline et de GH sont faiblement et négativement corrélés entre eux.
Disciplines :
Veterinary medicine & animal health
Author, co-author :
Michaux, C.; Faculté de Médecine Vétérinaire - Bruxelles - Belgium
Beckers, Jean-François ; Université de Liège - ULiège > Chaire d'Obstétrique et des Troubles de la Reproduction Bruxelles
de Fonseca, M.; Faculté de Médecine Vétérinaire - Bruxelles - Belgium
Hanset, R.; Faculté de Médecine Vétérinaire - Bruxelles - Belgium
Language :
English
Title :
Plasma insulin level in double-muscled and conventional bulls during the first year of life
Alternative titles :
[fr] Taux de l'insuline plasmatique chez les taureaux conventionnels et culards pendant la première année de la vie
Publication date :
1981
Journal title :
Zeitschrift für Tierzüchtung und Züchtungsbiologie
ISSN :
0044-3581
Publisher :
Parey, Hamburg, Germany
Volume :
98
Pages :
312-318
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
IRSIA - Institut pour l'Encouragement de la Recherche Scientifique dans l'Industrie et l'Agriculture [BE]
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