摘要
本试验旨在研究泛酸对5-16周龄五龙鹅生长性能、屠宰性能、肌肉品质、营养物质利用率及血清生化指标的影响,以确定泛酸的适宜添加水平。试验选用5周龄五龙鹅360只,随机分为6组,每组6个重复,每个重复10只（公母各占1/2）。Ⅰ组为对照组,饲喂基础饲粮,Ⅱ-Ⅵ组分别饲喂在基础饲粮中添加5、10、20、40、80 mg/kg泛酸的试验饲粮。试验期12周。结果表明：1）采用不相关比较法进行分析,饲粮泛酸添加水平为21.17 mg/kg时平均日增重最大,饲粮泛酸添加水平为18.50 mg/kg时料重比最小。2）Ⅲ、Ⅳ组屠宰率极显著高于Ⅰ组（P〈0.01）,腹脂率显著低于Ⅰ组（P〈0.05）。3）Ⅳ组肌肉亮度（L＊）和红度（a＊）值显著高于Ⅰ组（P〈0.05）,剪切力和滴水损失显著或极显著低于Ⅰ组（P〈0.05或P〈0.01）。4）Ⅳ组的粗蛋白质、粗脂肪、钙、磷、氮利用率和沉积氮显著或极显著高于Ⅰ组（P〈0.05或P〈0.01）,粪便氮极显著低于Ⅰ组（P〈0.01）。5）Ⅳ组的尿酸、尿素氮、总胆固醇含量极显著低于Ⅰ组（P〈0.01）。由此表明,饲粮中添加适宜水平泛酸能够提高五龙鹅的生长性能、屠宰性能、肌肉品质、营养物质利用率,降低腹脂率及尿酸、尿素氮、总胆固醇含量。建议5-16周龄鹅饲粮中泛酸添加水平为18.50-20.00 mg/kg。
This experiment was conducted to study the effects of pantothenic acid on growth performance,slaughter performance,meat quality,nutrient availability and serum biochemical parameters of Wulong geese aged from 5 to 16 weeks,and to find the appropriate supplemental level of pantothenic acid. A total of 360five-week-old Wulong geese were randomly divided into 6 groups with 6 replicates per group and 10 geese（ half male and half female） 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 5,10,20,40,80 mg / kg pantothenic acid,respectively. The experiment lasted for 12 weeks. The results showed as follows：1） using unrelated comparative analysis method,when the dietary pantothenic acid level was 21. 17 mg / kg,the average daily gain reached the highest; when the dietary pantothenic acid level was 18.50 mg / kg,the feed to gain reached the lowest. 2） The dressed percentage in groups Ⅲ and Ⅳ was significantly higher than that in group Ⅰ（ P〈 0. 01）,but the percentage of abdominal fat was significantly lower than that in group Ⅰ（ P〈 0.05）. 3） The lightness（ L＊） and red（ a＊） values in group Ⅳ was significantly higher than that in group Ⅰ（ P〈 0.05）,but the shear force and drip loss were significantly lower than those in group Ⅰ（ P〈 0.05 or P〈 0.01）. 4） The availability of crude protein,ether extract,calcium,phosphorus,nitrogen and deposit nitrogen in group Ⅳ were significantly higher than those in group Ⅰ（ P〈 0.05 or P〈 0.01）,but the nitrogen excretion from excrement was significantly lower than that in group Ⅰ（ P〈 0.01）. 5） The contents of uric acid,urea nitrogen and total cholesterol in group Ⅳ were significantly lower than those in group Ⅰ（ P〈 0.01）. In conclusion,dietary pantothenic acid at appropriate supplemental level can promote growth performance,slaughter performance,meat quality and nutrient availability of Wulong geese,reduce percentage of abdominal fat and the content of uric acid,urea nitrogen,total cholesterol. The optimal supplemental level of pantothenic acid of W ulong geese aged from 5 to 16 weeks is 18. 50 to 20. 00 mg / kg.
出处
《动物营养学报》
CAS
CSCD
北大核心
2015年第11期3411-3419,共9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)
山东省良种工程(12-1-3-17-nsh)
关键词
泛酸
五龙鹅
生长性能
屠宰性能
肌肉品质
营养物质利用率
血清生化指标
pantothenic acid
Wulong geese
growth performance
slaughter performance
meat quality
nutrient availability
serum biochemical parameters
