不同营养水平全混合日粮对舍饲育肥羔羊生产性能、养分表观消化率和屠宰性能的影响

草业学报 ›› 2012, Vol. 21 ›› Issue (4): 252-258.

不同营养水平全混合日粮对舍饲育肥羔羊生产性能、养分表观消化率和屠宰性能的影响

马友记,王宝义,李发弟,赵有璋^*,胡祥

甘肃农业大学动物科技学院,甘肃兰州 730070

收稿日期:2011-04-18 出版日期:2012-04-25 发布日期:2012-08-20
通讯作者: E-mail:zhaoyz@gsau.edu.cn
作者简介:马友记(1976-),男,山东汶上人,副教授,博士。E-mail:yjma@gsau.edu.cn
基金资助:
国家科技支撑计划项目(2008BADB2B05-07,2011BAD28B05)和国家肉羊产业技术体系(CARS-39)资助。

Effects of different nutrition levels in total mixed rations on production performance, apparent digestibility, and slaughter performance in yard feeding lambs

MA You-ji, WANG Bao-yi, LI Fa-di, ZHAO You-zhang, HU Xiang

Faculty of Animal Science and Technology, Gansu Agriculture University, Lanzhou 730070, China

Received:2011-04-18 Online:2012-04-25 Published:2012-08-20

摘要/Abstract

摘要： 为了研究3种营养水平(A₁-0.7×NRC、A₂-0.8×NRC、A₃-0.9×NRC)全混合日粮对舍饲羔羊生产性能、养分表观消化率和屠宰性状的影响,本试验选择48只南非肉用美利奴×甘肃高山细毛羊杂交一代羔羊,随机分为3个处理组,进行为期60 d的育肥试验。结果显示,在全混合日粮饲喂技术下,饲喂A₂、A₃营养水平日粮组的羔羊全期平均日增重极显著高于A₁营养水平组(P<0.01),A₂和A₃营养水平组差异不显著(P>0.05),公羔全期平均日增重极显著高于母羔(P<0.01);A因子对钙、总磷、中性洗涤纤维、酸性洗涤纤维消化率均有极显著影响(P<0.01),性别仅对钙、总磷消化率有极显著影响(P<0.01),但营养水平与性别没有显著交互作用(P>0.05);营养水平对育肥羔羊的屠宰性能没有显著影响(P>0.05),但杂种羔羊的屠宰率、熟肉率、眼肌面积等高于甘肃高山细毛羊。以上结果表明采用0.8×NRC营养水平全混合日粮育肥南非肉用美利奴×甘肃高山细毛羊杂交一代羔羊较为适宜,在同一营养水平下,公羔生长性能优于母羔。

Abstract: The effects of three nutrition levels (A₁, 0.7×NRC, A₂, 0.8×NRC, A₃, 0.9×NRC) in total mixed rations on production performance, apparent digestibility and slaughter performance was evaluated. Forty-eight lambs [SA Mutton Merino(♂)×Gansu alpine fine wool sheep (♀)] were randomly divided into three groups for a two months feeding trial. The average daily weight gains of the A₂ and A₃ groups were significantly (P<0.01) higher than that of the A₁ group. There was no significant difference between A₂ and A₃. The average daily gain of ram lambs was significantly (P<0.01) higher than that of ewe lambs. Different nutrition levels had significant effects on apparent digestibility of Ca, total phosphorus (TP), neutral detergent fibre (NDF) and acid detergent fiber (ADF) (P<0.01). Sex factors had significant effects on apparent digestibility of Ca and TP (P<0.01). There were no difference in slaughter indexes (P>0.05) but the slaughter rate, cooking rate and loin eye area of hybrid lambs were significantly higher than those of Gansu alpine fine wool sheep. In summary, the 0.8×NRC nutritional level was better for fattening hybridized lambs of crossed SA Mutton Merinos, and ram lambs grew better than ewe lambs at the same nutritional levels.

中图分类号:

S826.4

马友记,王宝义,李发弟,赵有璋,胡祥. 不同营养水平全混合日粮对舍饲育肥羔羊生产性能、养分表观消化率和屠宰性能的影响[J]. 草业学报, 2012, 21(4): 252-258.

MA You-ji, WANG Bao-yi, LI Fa-di, ZHAO You-zhang, HU Xiang. Effects of different nutrition levels in total mixed rations on production performance, apparent digestibility, and slaughter performance in yard feeding lambs[J]. Acta Prataculturae Sinica, 2012, 21(4): 252-258.

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