填饲能量相同时不同油脂对肉鸭肥肝质量的影响  

Effects of Supplemented Oil Sources on Quality of Fatty Liver in Ducks Based on an Equal Dietary Energy Level

作　　者：周磊[1] 曾秋凤[1] 张克英[1] 吕刚[1] 

机构地区：[1]四川农业大学动物营养研究所,教育部动物抗病营养重点实验室,雅安625014

出　　处：《动物营养学报》2010年第6期1558-1565,共8页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：十一五国家科技支撑计划课题(2006BAD12B07);四川省教育厅自然科学科研项目(2006A022)

摘　　要：本研究旨在探讨填饲能量相同条件下,大豆油和鱼油对樱桃谷肉鸭产肝性能和肥肝品质的影响。试验采用单因子设计,选用60只体重一致的8周龄樱桃谷肉公鸭,随机分成3个处理,每个处理20个重复,每个重复1只鸭。填饲期为21 d,第1～7天3个处理均填饲玉米饲粮,第8～21天处理1填饲玉米饲粮,处理2和处理3分别填饲在玉米饲粮中添加3%大豆油和3%鱼油的饲粮,各处理填饲能量相同。结果表明:产肝性能随填饲时间延长而提高(P<0.01);填饲3周后,鱼油组平均肝重301.89 g、料肝比37.25、肝体比5.15,均与玉米组和大豆油组差异极显著(P<0.01);鱼油组肥肝的粗脂肪含量极显著高于玉米组和大豆油组(P<0.01);肝脏组织切片表明,随着填饲时间增加,肝脏中脂肪滴增加,且鱼油组脂肪滴最多、最大,表现融合;鱼油组和大豆油组均可极显著降低肥肝中的饱和脂肪酸含量(P<0.01),提高不饱和脂肪酸含量(P<0.01),特别是鱼油能提高二十碳五烯酸和二十二碳六烯酸含量(P<0.01),大豆油可提高亚油酸和亚麻酸含量(P<0.01)。以上结果可以看出,在填饲能量相同条件下,填饲第8～21天添加鱼油可提高樱桃谷肉鸭的产肝性能和肥肝品质;添加大豆油对产肝性能无显著影响,但可调控肝脏脂肪酸组成。The experiment was conducted to study the effects of soybean oil and fish oil on fatty liver producing performance and quality of force-fed cherry valley ducks based on an equal dietary energy level.A single factor design was adopted.Sixty 8-week-old cherry valley ducks（similar body weight） were randomly divided into 3 treatments with 20 replicates per treatment and 1 duck per replicate.The experiment lasted for 21 d.The ducks were force-fed with corn diet from 1 to 7 days.From 8 to 21 days,the ducks in treatment 1（corn group） were force-fed with corn diet without oil supplementation,and those in treatments 2（soybean oil group） and 3（fish oil group） were force-fed with the corn diet including 3% soybean oil and 3% fish oil,respectively.The ducks in all treatments had the equal energy intake.The results showed as follows： fatty liver producing performance was increased with the duration of force-feeding（P0.01）.In fish oil group,average fatty liver weight,ratio of feed intake to fatty liver weight and ratio of fatty liver weight to body weight were 301.89 g,37.25 and 5.15,respectively,and were significantly higher than those in corn group and soybean oil group after 3 weeks of force-feeding（P0.01）.The content of ether extract of fatty liver in fish oil group was significantly higher than that in corn group and soybean oil group（P0.01）.The fatty liver slice indicated that the amount of fat drops was increased with duration of force-feeding,and fat drops of fatty liver in fish oil group were the most,the largest and fusional.The content of saturated fatty acid of fatty liver was significantly decreased,but the content of unsaturated fatty acid was significantly increased in soybean oil group and fish oil group（P0.01）,and especially fish oil increased the contents of eicosapentaenoic acid and docosahexaenoic acid in fatty liver（P0.01）.Soybean oil increased the contents of linoleic acid and linolenic acid in fatty liver（P0.01）.It can be concluded that on d 8 to 21 of force-feed

关 键 词：樱桃谷肉鸭 大豆油 鱼油 肥肝 填饲 

分 类 号：S834[农业科学—畜牧学]