青贮黄梁木不同比例替代青贮全株玉米对育肥期乐至黑山羊生长性能、屠宰性能和肉品质的影响

发布时间：2018-05-24 01:49

本文选题：黄梁木 + 乐至黑山羊　；参考：《饲料工业》2017年21期

【摘要】：试验旨在研究青贮黄梁木不同比例替代青贮全株玉米对育肥期乐至黑山羊生长性能、屠宰性能和肉品质的影响。选取体重为(21.07±4.05)kg的5月龄乐至黑山羊公羔45只,随机分为3组,每组15只。对照组每天饲喂基础饲粮,试验组每天用青贮黄梁木分别按比例替代25%和50%青贮全株玉米。预饲期10 d,正式期40 d。结果显示:(1)青贮黄梁木不同比例替代青贮全株玉米极显著提高了育肥期乐至黑山羊的平均日采食量(P0.01),极显著提高了平均日增重(P0.01);50%青贮黄梁木替代组显著降低了料肉比(P0.05)。(2)青贮黄梁木不同比例替代青贮全株玉米显著提高了育肥期乐至黑山羊的肩宽(P0.05),50%青贮黄梁木替代组显著增加了眼肌面积(P0.05),对其余屠宰指标均无不良影响。(3)青贮黄梁木不同比例替代青贮全株玉米显著降低了育肥期乐至黑山羊羊肉的失水率(P0.05),极显著降低了苯丙氨酸的含量(P0.01),50%青贮黄梁木替代组显著提高了苏氨酸和赖氨酸的含量(P0.05)。结果表明,青贮黄梁木不同比例替代青贮全株玉米对育肥期乐至黑山羊生长性能、屠宰性能和肉品质有一定的提高作用,本试验条件下,以青贮黄梁木50%替代青贮全株玉米的效果较优。
[Abstract]:The purpose of this study was to study the effects of silage with different proportion of silage on growth performance, slaughter performance and meat quality of Lezhi Black Goat during fattening period. Forty five month old Lezhi black goat lambs weighing 21.07 卤4.05)kg were randomly divided into 3 groups with 15 lambs in each group. The control group was fed with basic diet every day, and the experimental group was replaced by 25% and 50% silage per day, respectively. The prefeeding period was 10 days and the formal period was 40 days. The results showed that the average daily feed intake of Lezhi Black Goat during fattening period was increased significantly, and the average daily gain was increased significantly (P 0.01%, P 0.01%, P 0.01%, P 0 01%, P 0 01%, P 0 01%, P 0 01%, P 0 01%, P 0 01%, P 0 01%, P 0 01%, P 0 01%, P 0 01%, P 0 01%, P 0 01%, P 0 01%, respectively). The shoulder width of Lezhi Black Goat in different proportion of silage with different ratio of silage yellow beam to silage was significantly increased in the 50% silage yellow beam replacement group, and the eye muscle area was increased significantly (P0.05), and there was no adverse effect on the other slaughtering indexes. 3Qingqing was not affected by silage with different proportion of silage yellow beam (P 0.05, P 0.05, P 0.05, P 0.05, P 0.05, P 0. 05, P 0. 05, P 0. 05, P 0. 05). The water loss rate (P0.05N) and phenylalanine content (P0.01T50%) were significantly decreased in silage with different proportion of stored yellow-beam tree. The contents of threonine and lysine were increased significantly in the silage replacement group. The content of threonine and lysine was significantly increased in the silage replacement group (P 0.05), and the content of phenylalanine was significantly decreased in the silage with 50% silage. The results showed that different proportion of silage could improve the growth performance, slaughter performance and meat quality of Lezhi Black Goat. The effect of replacing silage maize with 50% silage was better.
【作者单位】：华南农业大学动物科学学院;|竹温氏新旺羊业有限公司;
【基金】：广东省公益研究与能力建设专项资金项目[2014A020208104,2016A020210083]
【分类号】：S827.5

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