›› 2018, Vol. 45 ›› Issue (6): 1564-1570.doi: 10.16431/j.cnki.1671-7236.2018.06.018

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Effects of Forage Canola Mixed Silage on Slaughter Performance and Meat Quality in Hu Sheep

DIAO Zhicheng, QU Yanghua, LIU Ce, GAO Yuefeng, LUO Hailing   

  1. State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
  • Received:2017-10-27 Online:2018-06-20 Published:2018-06-15

Abstract:

The experiment was conducted to study the effects of forage canola on the slaughter performance and meat quality of Hu lambs.Two hundred 3-month-old Hu male lambs were equally and randomly divided into two groups.One group was fed on corn silage total mixed ration (control group),and the other was fed with forage canola silage total mixed ration (experimental group).A slaughter experiment was carried out to test the slaughter performance and meat quality after 90 days feeding.The results showed that,compared with the control group,the carcass weight,rib fat depth and loin eye area of lambs in the experimental group had no significant (P>0.05),and they showed a significantly higher liver (P<0.01) and kidney weight(P<0.05).For meat quality,a45 min* and a24h* value decreased extremely significantly (P<0.01),the level of behenic acid (C22:0) increased significantly (P<0.05),while the levels of arachidonic acid (C20:4n6),docosahexenoic acid (C22:6n3) and n-6 polyunsaturated fatty acids decreased significantly (P<0.05).The other indexes of meat quality and fatty acid composition had no significant change (P>0.05).In summary,feeding growing Hu lambs with forage canola silage total mixed ration had no seriously adverse effects on slaughter performance and meat quality,had a similar effect with corn silage,which provided a theoretical basis for the utilization of forage canola.

Key words: forage canola; slaughter performance; meat quality; Hu sheep

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