摘要
本文以肉仔鸡中期饲料的营养浓度为例，介绍饲料配方中最佳经济效益营养浓度的选择方法。具体方法是以肉鸡中期饲料代谢能浓度为11．286～14．212MJ／kg（NRC查表计算值），按每组相差0．418MJ／kg（相当于100kcal／kg），其中以肉仔鸡NRC标准（13．376MJ／kg）为对照组，其他营养按NRC标准营养浓度计算能量与其他营养成分比例后作为营养浓度。饲养试验进行21d。试验结果表明：不同营养浓度的饲料配方成本是不同的，随着营养浓度增加，饲料配方成本增高；同一养殖条件，不同营养浓度饲料的养殖效益不同，存在着一个最佳的营养浓度。
Based on the nutrient concentration in broiler （21 - 42 d） feed as an example ,the method was introduced for selecting the best economic benefit in feed formula nutrient concentration.The specific method was based on broiler （21 - 42 d） feedstuffs metabolic energy（ME） concentration of 11.286 - 14.212 MJ/kg（NRC look-up table values calcu- lated）.There was difference with energy 0.418 MJ/kg（equivalent to 100 kcal/kg） in every group.NRC standard（13.376 MJ/ kg） was for the control group,the other nutrition according to NRC standard nutrient concentration calculation of energy and other nutrients ratio as the nutrient concentration.Feeding trial last for 21 days.The results showed that：the cost of feed formula of different nutrient concentration was different,with the nutrient concentration increased,the formula cost in- creased;the same culture conditions, different nutrient concentrations of forage breeding efficiency was different ,there was an optimum concentration of nutrient concentration.
出处
《中国饲料》
北大核心
2014年第8期22-23,共2页
China Feed
关键词
选择方法
最佳经济效益
营养浓度
饲料配方
selection method
the optimal economic benefit
nutrient concentration
feed formulation
