摘要
体重、健康状况相近的8月龄混系和丹系长白肥育猪16头,空腹采血测定cAMP、胰岛素、激素敏感脂酶(HSL)、游离脂肪酸(FFA)和甘油三酯;屠宰后测定胴体指标,并采背部脂肪和肝脏组织,分析了cAMP和腺苷酸环化酶(AC)活性以及脂肪组织中脂肪酸组成.结果表明,与混系相比,丹系瘦肉率、眼肌面积和后腿比分别高9.44%(P<0.01)、9.67%和4.00%,背膘厚、脂肪率和板油比分别低7.97%、18.10%(P<0.05)和14.25%。血浆cAMP、HSL和FFA分别比混系高32.85%(P<0.05)、7.41%和123.41%;甘油三酯和胰岛素则分别低12.23%和18.06%.丹系脂肪组织中总脂,14碳和16碳脂肪酸分别高10.85%、39.66%(P<0.01)和7.31%,而18碳脂肪酸则低4.31%;丹系肝和脂肪组织中cAMP和AC显著高于混系。结果证明,猪脂肪沉积的品系差异与肝、脂肪组织及血中cAMP的水平有关,脂肪沉积的cAMP调控具有明显的品系差异。
The cyclic AMP, insulin, hormone sensitive lipase(HSL),free fatty acid(FFA)and triglyceride(TG)in blood were measured for 16 eight month-old Danish Lanrace (DL)and Mixed Landrace(ML)with the similar weight and health condition, The carcass traits wore analysed after slaughtered. The cyclic AMP, adenyl cyclase(AC)activity and fatty acid composition were examined in back adipose and liver tissue. The result showed that the-lean meat percentage, eye muscle area and rear leg ratio of DL were 9.44%(P<0.01),9.67%and 4.00% higher; but the lack-fat thickness, fat percentage and leaf lard ratio were 7.97%,18.10%(P<0.05)and 14.25%lower than that of ML respectively. The cAMP, HSL and FFA of DL were 32.85%(P<0.05),7.41%and 23.41%higher; but triglyceride and insulin are 12.23%and 18.06%lower than that of ML. The 14-carbon and 16-carbon fatty acid of DL in adipose tissue were 39.66%(P<0.01) and 7.31%higher; but 18-carbon fatty acid is lower than that of ML, The cyclic AMP and adenyl cyclase activity of DL in liver and adipose tissue were notably higher than that of ML. The result showed also that the difference of pocrine fat deposition was in close relationship with the level of cyclic AMP in liver and adipose tissue and blood, the control of fat deposition by cAMP existed significant strain differences.
出处
《畜牧兽医学报》
CAS
CSCD
北大核心
1996年第6期489-494,共6页
ACTA VETERINARIA ET ZOOTECHNICA SINICA
基金
国家自然科学基金
关键词
脂肪沉积
CAMP
猪
Fat deposition, Cyclic AMP, Pig