紫貂育成前期饲粮适宜能量浓度与蛋白质水平的研究

为探讨紫貂育成前期饲粮适宜的能量浓度与蛋白质水平 ,本研究选用 90只 8周龄断奶紫貂幼兽 (公、母各半 )进行了 (GE:2 0 934,2 2 1 90 .0 4和 2 3446.0 8KJ/kg)× 3(CP:35%、40 %和45% )二因子交叉饲养试验和消化代谢试验。试验结果表明 ,紫貂育成前期饲粮适宜能量浓度和蛋白质水平分别不应低于 2 2 1 90 .0 4 KJ/kg和 40 %。随着饲粮能量浓度的提高 ,育成前期紫貂的干物质消化率、日食入总能、日食入消化能、日食入代谢能、能量代谢率、日存留氮和氮存留率均逐渐提高。随着饲粮蛋白质水平的提高 ,育成前期紫貂日进食干物质量、日食入总能、日食入消化能、日食入代谢能和能量代谢率均逐渐降低 ,而日食入总氮和日食入可消化氮随之逐渐提高。

Study on Protein Level and Feed Energy Density in Development Early Stage of Sable

Research results showed that increasing energy of feeds,the sable s dry matter digestibility,ingestion total energy,ingestion digestion energy,in- gestion metabolism energy,energy metabolism ratio,storge nitrogen and nitro- gen ratio of perday in early muture period all raise gradually.Increasing protein level of feeds,the dry matter amount,total ingestion energy,ingestion diges- tion energy,ingestion metabolism energy of per day and energy metabolism ra- tio of sable allreduce gradually and the total ingestion nitrogen and digestion ni- trogen per day both raise gradually.