title: Comparison of atrogin-1/MAFbx mRNA expression in the gizzards of egg- and meat-type chickens.
abstract: We examined atrogin-1/MAFbx mRNA expression in the smooth muscle of gizzards from egg- and meat-type chickens. Gizzard weight relative to body weight was significantly lower in the meat-type chickens than in the egg-type at 14 d of age. In contrast, the level of atrogin-1/MAFbx mRNA in the gizzard was significantly higher in the meat-type chickens than in the egg-type chickens. Thus atrogin-1/MAFbx mRNA expression in the smooth muscle of the gizzard was higher in meat-type chickens than in egg-type chickens, in contrast to its expression in the skeletal muscles.
authors.affiliation: Animal Physiology and Nutrition Division, NARO Institute of Livestock and Grassland Science.
authors.forename: Kazuki
authors.initials: K
authors.lastname: Nakashima
authors.forename: Aiko
authors.initials: A
authors.lastname: Ishida
authors.forename: Masaya
authors.initials: M
authors.lastname: Katsumata
mesh_terms: D000818:Animals; D001835:Body Weight; D002645:Chickens / Q000235:genetics* / Q000378:metabolism; D004531:Eggs; D005260:Female; D015870:Gene Expression; D005895:Gizzard, Avian / Q000378:metabolism*; D008297:Male; D008460:Meat; D009124:Muscle Proteins / Q000235:genetics* / Q000378:metabolism; D009130:Muscle, Smooth / Q000378:metabolism*; D012333:RNA, Messenger / Q000235:genetics* / Q000378:metabolism; D044843:SKP Cullin F-Box Protein Ligases / Q000235:genetics* / Q000378:metabolism
chemical_list: D009124:Muscle Proteins; D012333:RNA, Messenger; D044843:SKP Cullin F-Box Protein Ligases