摘要
选取28日龄、体重相近的合浦灰鹅60只,随机分为3个组,采用精料＋青料（黑麦草等）混合的方式进行饲喂试验,试验期为42天。第70d采血测定血清中尿素氮、转氨酶活性、血脂和脂蛋白等生化指标,并进行屠宰测定和肌肉营养成分含量测定。试验结果表明：（1）生长前期（28-49日龄）,第2组日增重较高,各组间差异不显著（P〉0.05）;生长后期（50-70日龄）第1组日增重较高,各组间差异不显著（P〉0.05）。（2）鹅的血清尿素氮含量随饲粮粗蛋白质水平的降低而下降（P〈0.05）;血清转氨酶活性、脂类和脂蛋白含量等组间无显著差异。（3）饲粮粗蛋白质水平对肉鹅屠宰性能无显著影响,鹅肉中的干物质、粗蛋白质、氨基酸总量、必需氨基酸总量、肌内脂肪、肌苷酸含量与蛋白质有正相关,各组间差异不显著（P〉0.05）,随着蛋白质水平提高,肌肉的营养和风味有改善的趋势。
In feeding trial,sixty 28d old geese were randomly divided into 3 groups,and at the same time, green forage （such as ryegrass） was supplied. Feeding trial lasted 42d. The results showed： （1）In period of 28-49d old,geese of group 2 had better daily gain than those of group 1 or group 3, but there were no significant differences among 3 groups （P〉0.05）; （2）In period of 50-70d old,although geese of group 1 had better daily gain than those of group 2 or group 3,there were no significant differences among 3 groups （P〉0.05） （3）Concentration of serum urea-nitrogen decreased with CP decreasing in diets （P〈0.05）, and there were no significant differences in the content of serum cholesterol, triglycerides, low-density lipoprotein, high-density lipoprotein and activities of alanine aminotransferase （ALT）, aspartate aminotransferase （AST） among 3 groups. （4） Dietary CP level had no significant effect on slaughter performance and carcass quality of Hepu meat-type geese （P〉 0.05）. （5） The nutrients in muscle indicated that DM,CP,TAA,TEAA, EE and inosinate were not different significantly among 3 treatments （P〉0.05）. But with dietary CP level increasing, nutrition and flavor of meat were slightly improved.
出处
《广西科学》
CAS
2007年第4期411-414,共4页
Guangxi Sciences
基金
广西青年科学基金项目(桂科青0339023)资助
关键词
鹅
蛋白质
生长性能
血清生化指标
肉质
geese, crude protein, performance, serum biological indexes, carcass quality
