不同比例新型稗谷牧草对辽宁绒山羊生产性能的影响

Effect of rate of new barnyard grass on production performance in Liaoning cashmere goat

试验研究不同比例新型稗谷牧草对辽宁绒山羊生产性能的影响。选取体重为(40.41±0.61) kg的辽宁绒山羊32只,随机分成4组,每组4个重复,每个重复2只羊。对照组绒山羊不饲喂稗谷牧草,试验组绒山羊分别饲喂含5%、10%和20%稗谷牧草的日粮。预试期15 d,正式试验期45 d。结果显示,随着日粮稗谷牧草比例增加,各组绒山羊的采食量和日增重均增加,料重比降低。稗谷牧草比例为20%时,日粮能量和粗蛋白的表观消化率和表观代谢率最高,粗纤维的表观消化率最高。日粮中添加20%的新型稗谷牧草,单位增重成本最低,每只羊比对照组每天多盈利1.27元。研究表明,新型稗谷牧草可以作为辽宁绒山羊肥育期的优质饲草,且添加比例为20%时效果最好。

The experiment was to study the effect of different rates of new barnyard grass on production performance of Liaoning cashmere goats.Thirty-two Liaoning cashmere goats with body weight of(40.41±0.61) kg were selected and divided into four groups with four replicates in each group and two goats in each replicate.The Liaoning cashmere goats fed with no barnyard grass in control group, cashmere goats fed with 5%, 10% and 20% barnyard grass in rations in experimental groups.The pre-trial period lasted for 15 d, and the trial period lasted for 45 d.The results showed that with the increase of the proportion of barnyard grass, the feed intake and daily gain of cashmere goats were increased and the ratio of feed to gain was decreased.When the proportion of barnyard grass was 20%, the apparent digestibility and apparent metabolic rate of energy and crude protein and the apparent digestibility of crude fiber were the highest.The cost per unit weight gain was the lowest when 20% new barnyard grass was added to the diet, and each sheep gained 1.27 yuan more per day than the control group.The experiment indicates that the new barnyard grass can be used as high quality forage grass for Liaoning cashmere goats in fattening period, and the effect is the best when the proportion is 20%.