摘要
本文旨在研究不同日粮条件下小羊驼对各种营养物质的代谢率,全面评价两种不同能量、蛋白梯度日粮的营养价值。结果表明:小羊驼对常规日粮中干物质、粗脂肪、粗蛋白、碳水化合物和能量的代谢率分别为:70.55%±9.29%、11.88%±5.42%、74.96%±4.22%、44.73%±12.63%和19.16%±4.93%;对粗纤维含量高的日粮中干物质、粗脂肪、粗蛋白、碳水化合物和能量的代谢率分别为:70.42%±9.92%、18.15%±10.77%、64.93%±8.55%、60.68%±18.13%和18.80%±7.48%,说明在不影响小羊驼能量代谢率的前提下,可适当增加粗纤维饲料的含量,以降低小羊驼的饲养成本,提高经济效益。
Metabolic rates of various nutrients at different conditions by alpacas were determined, in order to estimate nutritional values of two diets of different energy and protein contents.Results showed that apparent digestibility of dry matter, crude fat, crude protein and carbohydrates in routine diets were 70.55% ± 9.29%, 11.88% ± 5.42%, 74.96% ± 4.22% and 44.73% ± 12.63% respectively and energy metabolic rate was 19.16% ± 4.93%. The apparent digestibility of dry matter, crude fat, crude protein and carbohydrates in diets with a higher crude fiber content were 70.42% ± 9.92%, 18.15% ± 10.77%, 64.93% ± 8.55% and 60.68% ± 18.13%, and energy metabolic rate was 18.80% ± 7.48%, indicating that in the condition of being not influence the energy metabolic rate of alpacas, increasing crude fiber content to reduce feed cost and increase of economic benefit may be possible.
