肉鸡血浆极低密度脂蛋白双向选择系的建立  

ESTABLISHMENT OF DIVERGENT SELECTION LINES OF PLASMA VERY LOW DENSITY LIPOPROTEIN IN BROILER CHICKENS

作　　者：陈金文[1] 杨山[1] 赵河山[2] 文伯珍[2] 莫棣华[2] 雷春[2] 王世成[3] 

机构地区：[1]东北农业大学动物科学系 [2]广东省农业科学院畜牧研究所 [3]山东莱阳农学院动物科学系

出　　处：《畜牧兽医学报》1997年第2期108-114,共7页ACTA VETERINARIA ET ZOOTECHNICA SINICA

摘　　要：测定８周龄１５００只岭南黄鸡Ａ系血浆极低密度脂蛋白（ＶＬＤＬ）浓度，据此建立了高ＶＬＤＬ（高脂）系和低ＶＬＤＬ（低脂）系；测定了零世代基础群及选择后高低ＶＬＤＬ系个体重、血浆ＶＬＤＬ、甘油三酯、总脂、胆固醇浓度和腹脂。结果表明，零世代血浆ＶＬＤＬ的变异系数很大，对其选择应该是有效的；零世代血浆ＶＬＤＬ、总脂、胆固醇浓度雄性高于雌性（Ｐ＜０．０１），血浆甘油三酯浓度雌性高于雄性（Ｐ＝０．０００１）。腹脂与血浆ＶＬＤＬ呈显著的正相关关系（ｒ＝０．５０，Ｐ＜０．０１），而与血浆甘油三酯的相关弱于血浆ＶＬＤＬ（ｒ＝０．３５，Ｐ＜０．５）。对８周龄血浆ＶＬＤＬ双向选择后，零世代腹脂呈显著的品系差异，８周龄腹脂高脂系是低脂系的两倍多；而整个生长产蛋期平均体重，高。Plasma very low density lipoprotein(VLDL)concentration was determined in 1500 male and female broilers from a male grandparent line at 8 weeks of age and both high VLDL (H—VLDL)and low VLDL(L—VLDL)lines were set up on the basis of high or low plasma VLDL concentration Body weight,plasma VLDL,triglyceride,total lipid,cholesterol and abdominal fat in the base population and H—VLDL or L—VLDL lines after selection for plasma VLDL were also measured The results were demonstrated that it should be efficient to select plasma VLDL because of its great coefficient of variation Plasma VLDL,total lipid and cholesterol concentrations of male broilers were significantly higher than those of female ones (P<0 01),whereas plasma triglyceride concentration of males was significantly lower than that of females (P=0 0001) Plasma VLDL was significantly correlated with abdominal fat(r=0 50,P<0 01) Correlation involving abdominal fat was less with plasma triglyceride than with plasma VLDL There was significant difference in abdominal fat in both lines but age increase,maybe food restriction decreased this difference The H—VLDL line had about twice as much abdominal fat at 8 weeds of age,while its mean body weight was similar to that of the L—VLDL line from growth to the end of lay

关 键 词：极低密度脂蛋白 双向选择 腹脂 肉用鸡 育种 

分 类 号：S831.2[农业科学—畜牧学]