摘要
本试验旨在探讨不同粗饲料组合对宁夏滩羊生长性能、经济效益、屠宰性能及肉品质的影响。选用平均体重为(26.00±1.93)kg的宁夏母滩羊45只,按同质原则分为3组,每组3个重复,每个重复5只滩羊,3组精饲料相同,占饲粮60%,各组粗饲料分别为30%苜蓿+10%玉米秸秆(Ⅰ组)、15%苜蓿+15%"中科2号"羊草+10%玉米秸秆(Ⅱ组)、30%"中科2号"羊草+10%玉米秸秆(Ⅲ组)。试验期为60 d。结果表明,各试验组滩羊平均日增重均无显著差异(P>0.05),但Ⅱ组经济效益更高。各组屠宰性能指标亦无显著差异(P>0.05)。Ⅱ组系水力比Ⅰ组和Ⅲ组有显著的降低(P<0.05),分别下降了18.63%、19.99%;Ⅰ组剪切力最高,显著高于Ⅲ组(P<0.05),较Ⅱ组和Ⅲ组分别高出了6.41%、15.46%;肉样粗脂肪含量最高的是Ⅲ组,显著高于最低的Ⅰ组(P<0.05),分别较Ⅰ组和Ⅱ组高出了66.74%、14.06%。结果提示,"中科2号"羊草代替苜蓿饲喂滩羊,在不影响宁夏滩羊生长和屠宰性能的前提下,对滩羊肉品质的有一定程度改善,同时可以提高经济效益。
This study was conducted to determine the effects of different roughage combinations on growth per-formance, economic efficiency, slaughter performance and meat quality of Ningxia Tan sheep. Forty five Ningxia Tan ewes [（26.00±1.93） kg] were randomly divided into three groups with 3 replicates per group and 5 ewes per replicate according to homogeneous principle, the concentrate of different groups was the same and account for 60% in diet, and the roughage combinations were 30% alfalfa＋10% maize straw （ groupⅠ） , 15% alfalfa＋15% Zhongke No.2 Leymus chinensis＋10% maize straw （ groupⅡ） and 30% Zhongke No.2 Ley-mus chinensis＋10% maize straw （ group Ⅲ） , respectively. The experiment lasted for 60 days. The results showed as follows：different roughage combinations did not cause any significant changes of average daily gain of Tan sheep （ P〉0.05） , but the economic efficiency was the highest in group Ⅱ. The slaughter performance among three groups did not have significant difference （ P〉0.05） . Water-holding capacity in groupⅡwas sig-nificantly lower than that in groupsⅠ and Ⅲ （ P〈0.05） , and were reduced by 18.63% and 19.99%, respec-tively; shear force in groupⅠwas significantly higher than that in groupⅢ（ P〈0.05） , and was increased by 6.41% and 15.46%, respectively, compared with that in groupsⅡ andⅢ. Ether extract content in meat sam-ple in group Ⅲ was significantly higher than that in group Ⅰ （P〈0.05）, and was increased by 66.74% and 14.06% respectively, compared with that in groupsⅠ andⅡ. In conclusion, Zhongke No.2 Leymus chinensis replaced alfalfa to feed Ningxia Tan sheep can improve meat quality in a certain degree while improving eco-nomic efficiency without affecting growth performance and slaughter performance.
出处
《动物营养学报》
CAS
CSCD
北大核心
2015年第6期1936-1942,共7页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
优质羊草种子繁育和种植技术示范推广(NTKJ-2013-03(1))
关键词
“中科2号”羊草
宁夏滩羊
生长性能
屠宰性能
肉品质
Zhongke No. 2 Leymus chinensis
Ningxia Tan sheep
growth performance
slaughter perform-ance
meat quality
作者简介
马琴琴（1988-），女，宁夏固原人，硕士研究生，动物营养与分子生物专业。E-mail：245054947@qq．com
通信作者：印遇龙，院士，博士生导师，E-mail：yinyulong@isa．ac．cn
