摘要
本试验旨在研究维生素B2对5～16周龄五龙鹅屠宰性能、肌肉品质及脂肪代谢的影响，以确定鹅饲粮中维生素B2的适宜添加水平。试验选用29日龄五龙鹅360只，随机分为6个组，每组6个重复，每个重复10只。Ⅰ组为对照组，饲喂基础饲粮（维生素B2含量为2．47mg／kg），Ⅱ～Ⅶ组分别饲喂在基础饲粮中添加2．5、5．0、10．0、20．0、40．0mg／kg维生素B2的试验饲粮。试验期12周。结果表明：1）Ⅲ组屠宰率、胸肌率、腿肌率均显著高于I组（P〈0．05），腹脂率显著低于Ⅰ组（P〈0．05）。采用不相关比较法进行分析，饲粮维生素B2添加水平为5．73mg／kg时屠宰率最大。2）Ⅲ组肌肉亮度（L＊）值和红度（a＊）值显著高于Ⅰ组（P〈0．05），剪切力显著低于Ⅰ组（P〈0．05）。3）Ⅲ组血清甘油三酯（TG）、总胆固醇（TCH）含量极显著低于Ⅰ组（P〈0．01）。4）屠宰率与a＊值和剪切力呈显著相关性（P〈0．05）；屠宰性能与TG、TCH含量呈显著或极显著相关性（P〈0．05或P〈0．01）。由此可见，饲粮添加5．0mg／kg维生素B2对5～16周龄五龙鹅的屠宰率、胸肌率、腿肌率、腹脂率、L＊值、a＊值、剪切力及TG和TCH含量有显著影响，建议饲粮维生素B2适宜添加水平为5．73mg／kg。
This experiment was conducted to study the effects of vitamin B2 on slaughter performance, meat quality and fat metabolism of Wulong geese aged from 5 to 16 weeks, and to find the appropriate supplemental level of the vitamin B2. A total of 360 Wulong geese （29-day-old） were randomly divided into 6 groups with 6 replicates per group and 10 geese per replicate. Geese in the group Ⅰ （ control group） were fed a basal diet, and geese in groups Ⅱ to Ⅵ（experimental groups） were fed the basal diet supplemented with 2.5, 5.0, 10.0, 20.0 and 40.0 mg/kg vitamin Bz , respectively. The experiment lasted for 12 weeks. The results showed as follows： 1 ） the dressed percentage, percentage of breast muscle and percentage of leg muscle in group Ⅲ were significantly higher than those in group Ⅰ （ P 〈 0.05 ）, but the percentage of abdominal fat was significantly lower than that in group Ⅰ （ P 〈 0.05）. Using unrelated comparative analysis method, when the dietary vitamin B2 level was 5.73 mg/kg, the dressed percentage reached the highest. 2 ） The lightness （L＊） and red （ a＊ ） values in groupⅢ were significantly higher than those in group Ⅰ （ P 〈 0.05）, but the shear force was significantly lower than that in group Ⅰ （ P 〈 0.05）. 3） The contents of triglyceride and total cho- lesterol in group Ⅲ were significantly lower than those in group Ⅰ （ P 〈 0.01 ）. 4 ） Dressed percentage had significant correlations with the a ＊ value and shear force （ P 〈 0.05 ）, respectively ; the slaughter performance had significant correlations with the contents of triglycerides and total cholesterol （ P 〈 0.05 or P 〈 0.01 ）, re- spectively. In conclusion, adding 5.0 mg/kg vitamin B2 can significantly affect the dressed percentage, per- centage of breast muscle, percentage of leg muscle, percentage of abdominal fat, L＊ value, a＊ value, shear force and contents of triglyceride and total cholesterol, the suggested dietary vitamin B2 optimal supplemental level is 5.73 mg/kg.
出处
《动物营养学报》
CAS
CSCD
北大核心
2014年第1期98-105,共8页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
国家水禽产业技术体系专项基金(CARS-43-11)
关键词
维生素B2
五龙鹅
屠宰性能
肌肉品质
脂肪代谢
vitamin B2
Wulong geese
slaughter performance
meat quality
fat metabolism
作者简介
王鑫（1987-），男，山东潍坊人，硕士研究生，从事动物营养与保健研究。E—mail：sisuoxin2006@sina．com
通讯作者：王宝维，教授，硕士生导师，E-mail：wangbw@qau．edu．cn
