7种半细毛羊常用饲料原料的营养价值评定

Determination of Nutritional Value of Seven Common Feedstuffs for Semi-Fine-Wool Sheep

试验旨在对半细毛羊常用饲料原料的营养价值进行评定。采集7种云南半细毛羊常用的饲料原料,采用概略养分分析法测定干物质、有机物、粗蛋白质、粗脂肪、粗纤维、中性洗涤纤维、酸性洗涤纤维等常规养分,并通过消化代谢试验测定各饲料原料的可消化粗蛋白、消化能和代谢能含量。在消化代谢试验中,粗饲料采用直接饲喂法,精饲料采用套算法。结果表明:由于所选7种原料在日粮中的使用目的不同,因此常规养分差异较大,其中干物质含量26.21%~91.13%,粗蛋白含量7.16%~44.73%,粗纤维含量3.71%~34.66%;这7种原料的可消化粗蛋白30.99~399.95 g/kg,消化能8.64~17.19 MJ/kg,代谢能7.07~15.81 MJ/kg,均以豆粕为最高值。通过比较分析,本试验测定的云南半细毛羊常用饲料原料的常规营养成分及可消化粗蛋白和有效能值均与中国饲料营养成分表有一定差异,从而为这7种原料在云南半细毛羊上的合理利用及中国饲料数据库的进一步完善提供一定的参考。

This experiment was conducted to evaluate the nutritive values of common feedstuffs for semi-fine-wool sheep. The contents of dry matter, organic matter, crude protein, ether extract, crude fiber, neutral detergent fiber, acid detergent fiber of seven commonly used feedstuffs for Yunnan semi-fine-wool sheep were determined using the feed proximate Analysis. The digestible crude protein,digestible and metabolic energy were determined by digestion and metabolism experiments. Moreover, the roughages were determined by feeding directly, and concentrates were evaluated by the substitution method. Results showed that the conventional nutrients of seven selected feedstuffs were great difference due to different uses in diets, such as the dry matter varied from 26.21% to 91.13%, crude protein varied from 7.16% to 44.73%, crude fiber varied from 3.71% to 34.66%; 2） The digestible crude protein of seven commonly used feedstuffs varied from 30.99 to 399.95 g/kg, the digestible energy varied from 8.64 to 17.19 MJ/kg, the metabolic energy varied from 7.07 to 15.81 MJ/kg and the soybean meal had the highest contents of these available nutrients. Conclusion： There were difference between the evaluated available nutrients of commonly used feedstuffs for Yunnan semi-fine-wool sheep and Chinese Feed Ingredients Table in this experiment, which provide a reference for the proper utilization of these seven feedstuffs in Yunnan semi-fine wool sheep, and also promote the further improvement of Chinese feed database.