Terrill T H, Gelaye S, Amoah E A, Miller S, Kouakou B, Gates R N, Hanna W W
Agricultural Research Station, Fort Valley State University, GA 31030, USA.
J Anim Sci. 1998 Jul;76(7):1964-9. doi: 10.2527/1998.7671964x.
We conducted two studies to assess the protein and energy value of pearl millet grain (Pennisetum glaucum [L.] R. Br.) for mature goats. In Exp. 1, 15 2-yr-old male castrated goats were gradually introduced over a 4-mo period to three all-grain diets consisting of 100% corn (Zea mays L.), 50:50 corn:pearl millet, and 100% pearl millet. After the adjustment to all-grain feeds, the goats were fed the diets in metabolism crates for 2-d adjustment and 7-d total collection periods. For Exp. 2, complete diets containing the three grain treatments (corn, 50:50 corn:pearl millet, and pearl millet) as 40% of the total DM as fed (the remainder was mainly alfalfa meal and mineral supplement) were balanced to contain 16% crude protein (CP) and 2.24 Mcal digestible energy (DE)/kg on an air-dry basis. Twelve mature (4- to 6-yr-old) buck goats were randomly assigned to diets and fed in pens for 14 d and then moved to metabolism crates for 10-d adjustment and 10-d total collection periods. In Exp. 1, DM intake was unaffected by dietary treatment, but digestibility of DM and organic matter was lowest (P < .10) in goats fed 100% pearl millet. Digestibility of complete diets also decreased (P < .10) as corn was replaced by 50 or 100% pearl millet, but DM intake increased (P < .10) on the 100% millet diet. In both experiments, substituting pearl millet for corn had no effect on nitrogen retained by the goats. Metabolizable energy of pearl millet was only 92% that of corn, but ME intake was similar when the grains were fed as 40% of the dietary DM. Pearl millet has potential as a major energy feed for goats in areas where it can be economically produced.
我们开展了两项研究，以评估珍珠粟（Pennisetum glaucum [L.] R. Br.）对成年山羊的蛋白质和能量价值。在实验1中，15只2岁的雄性去势山羊在4个月的时间里逐渐过渡到三种全谷物日粮，分别为100%玉米（Zea mays L.）、玉米与珍珠粟各50%的混合日粮以及100%珍珠粟日粮。在适应全谷物饲料后，将山羊置于代谢笼中，进行为期2天的适应期和7天的总收集期饲养。在实验2中，将三种谷物处理（玉米、玉米与珍珠粟各50%的混合日粮、珍珠粟）作为日粮干物质的40%（其余主要为苜蓿粉和矿物质补充剂）配制成全价日粮，使其在风干基础上含有16%的粗蛋白（CP）和2.24兆卡/千克的可消化能量（DE）。12只成年（4至6岁）公山羊被随机分配到不同日粮组，在栏舍中饲养14天，然后转移到代谢笼中，进行为期10天的适应期和10天的总收集期饲养。在实验1中，日粮处理对干物质采食量没有影响，但采食100%珍珠粟的山羊干物质和有机物消化率最低（P < 0.10）。随着玉米被50%或100%的珍珠粟替代，全价日粮的消化率也降低（P < 0.
