摘要
选用32只哺乳羔羊(公母各半),采用饲养试验,消化代谢试验及屠宰试验等手段研究其能量需要量。结果表明:①全哺乳期和补饲期羔羊每日的代谢能采食量(MEI)分别为678kg和707W^(0.75)KJ。羔羊对母乳能量的消化率为97.65％,代谢率为96.90％,对补饲日粮的能量消化率为68.09％。②为满足羔羊正常生长的能量需要,哺乳羔羊自25～30日龄开始补料。每天代谢能补饲量可用公式估计:即ME_补=1546.8+15.45X—1256X^(0.2311)e^(-0.00176x)(X:日龄;ME_补:KJ/天)。③羔羊全哺乳期和补料期每日的维持代谢需要能量分别为457和489W^(0.75)KJ,增重效率(Kpf)分别为0.710和0.656。羔羊的代谢能总需要量(MER)可用下列公式计算:全哺乳期:MER=457W^(0.75)+7239△W或:MER=457W^(0.75)+NEg/kpf(NEg=5151.6△W+0.700W—2.975;kpf=0.710)。补料期:MER=489W^(0.75)+11682△W或:MER=489W^(0.75)+NEg/kpf(NEg=7652△W+0.286W—0.873;kpf=0.656)式中:MER:KJ/天;W^(0.75)和W:kg;△W:kg/天。
Thirty—two suckling green goats were used to study the energy requirement by feeding trial, digestiblic and metabolic test, and slaughtering experiment. The results show: (1) The metabolizable energy intake (MEI) of the kids for the whole suckling and creep feeding period were 678w^(0.75) and 707w^(.75) KJ per day, respectively, the energy digestibility for the milk was 97. 65％, and for the supplement feed was 68.09％. (2)In order to satify the energy requirement for the growing, goats the feed should be supplied, and the metabolizable energy (MEs) of creep feed can be estimated by the equation: MEs=1546.8+15.45X—1256X^(0.2311). e^(0.00176X)(X:day;MES:KJ/day). (3) the requirements of metabolizable energy for the whole suckling and creep feeding period were 457W~^(0.75) and 498^(0.75) KJ per day, and the coefficients for gain were 0.710 and 0.656, respectively. The total requirement of metabolizable energy for he suckling goats can be estimated by follow equation: whole suckling period:MER=457W^(0.75)'+7239△W or:MER=457W^(0.75)+NEg/Kpf (NEg=5151.6△W+0.700W-2.975;Kpf=0.710) Creep feeding period: MER=489W^(0.75)+11682△W or:MER=498W^(0.75)+NEg/Kpf (NEg=7652△W+0.286W-0.873;Kpf=0.656).
