饲粮中n-6/n-3多不饱和脂肪酸比值对肉鹅生长性能、屠宰性能、血清脂质指标、肠道组织形态和胸肌脂肪酸组成的影响  

Effects of Dietary n-6/n-3 Polyunsaturated Fatty Acid Ratio on Growth Performance,Slaughter Performance,Serum Lipid Indices,Intestinal Morphology and Breast Muscle Fatty Acid Composition of Meat Geese

作　　者：徐文双 王宝维[1] 张名爱[1] 凡文磊 朱玉霞 钱旺 孔敏 XU Wenshuang;WANG Baowei;ZHANG Mingai;FAN Wenlei;ZHU Yuxia;QIAN Wang;KONG Min(College of Food Science and Engineering,Qingdao Agricultural University,Qingdao 266109,China)

机构地区：[1]青岛农业大学食品科学与工程学院,青岛266109

出　　处：《动物营养学报》2023年第3期1649-1657,共9页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：2021年度山东省重点研发计划(2021CXGC010805);财政部和农业农村部-国家现代农业产业技术体系资助(CARS-42-14)。

摘　　要：试验旨在探究饲粮中n-6/n-3多不饱和脂肪酸(PUFA)比值对肉鹅生长性能、屠宰性能、血清脂质指标、肠道组织形态和胸肌脂肪酸组成的影响。选取120只体重为(1.0±0.1)kg的32日龄肉鹅(三花鹅),随机分成3组,每组5个重复,每个重复8只。Ⅰ组、Ⅱ组和Ⅲ组饲粮中n-6/n-3 PUFA比值分别为1∶1、6∶1、12∶1。试验期60 d。结果表明:1)饲粮中n-6/n-3 PUFA比值对肉鹅的生长性能无显著影响(P>0.05)。2)Ⅱ组的腹脂率显著低于其他2组(P<0.05)。3)Ⅱ组的血清低密度脂蛋白胆固醇(LDL-C)含量显著低于其他2组(P<0.05)。4)Ⅱ组的十二指肠绒毛高度显著高于Ⅰ组(P<0.05),Ⅱ组的回肠隐窝深度显著低于其他2组(P<0.05),Ⅱ组的回肠绒毛高度/隐窝深度显著高于其他2组(P<0.05)。5)Ⅱ组的胸肌辛酸、γ-亚麻酸、α-亚麻酸、二十碳六烯酸和n-3 PUFA含量显著高于其他2组(P<0.05)。由此可见,饲粮中n-6/n-3比值为6∶1时,肉鹅的腹脂率、血清LDL-C含量和回肠隐窝深度最低,十二指肠绒毛高度和胸肌n-3 PUFA含量最高。This experiment was conducted to investigate the effects of dietary n-6/n-3 polyunsaturated fatty acids(PUFA)ratio on growth performance,slaughter performance,serum lipid indices,intestinal morphology and breast muscle fatty acid composition of meat geese.A total of 120 thirty-two-day-old meat geese(Sanhua geese)with a body weight of(1.0±0.1)kg were randomly divided into 3 groups with 5 replicates per group and 8 geese per replicate.The dietary n-6/n-3 PUFA ratios of groupsⅠ,ⅡandⅢwere 1∶1,6∶1 and 12∶1,respectively.The experiment lasted for 60 days.The results showed as follows:1)dietary n-6/n-3 PUFA ratio had no significant effects on growth performance of meat geese(P>0.05).2)The abdominal fat percentage of groupⅡwas significantly lower than that of other two groups(P<0.05).3)The serum low density lipoprotein cholesterol(LDL-C)content of groupⅡwas significantly lower than that of other two groups(P<0.05).4)The duodenal villus height of groupⅡwas significantly higher than that of groupⅠ(P<0.05),the ileal crypt depth of groupⅡwas significantly lower than that of other two groups(P<0.05),and the ileal villus height/crypt depth of groupⅡwas significantly higher than that of other two groups(P<0.05).5)The contents of caprylic acridγ-linolenic acid,α-linolenic acid,docosahexaenoic acid and n-3 PUFA in breast muscle of groupⅡwere significantly higher than those of other two groups(P<0.05).In conclusion,when dietary n-6/n-3 PUFA ratio is 6∶1,the abdominal fat percentage,serum LDL-C content and ileal crypt depth are the lowest,and the duodenal villus height and breast muscle n-3 PUFA content are the highest.

关 键 词：肉鹅 n-6/n-3多不饱和脂肪酸比值 生长性能 屠宰性能 血清脂质指标 肠道组织形态 

分 类 号：S835[农业科学—畜牧学]