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Acta Prataculturae Sinica ›› 2009, Vol. 18 ›› Issue (1): 112-117.

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Effects of different diet combinations on digestion and metabolism of nutrients of sheep

LI Yong1,2, HAO Zheng-li1, LI Fa-di1,3, WU Qiu-jue1, ZHANG Xiao-qing1, YE De-he4   

  1. 1.College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China;
    2.Department of Animal Science and Technology, Zhoukou Vocational and Technical College, Zhoukou 466001,China;
    3.Gansu Feed Engineering and Technology Research
    Center, Lanzhou 730070, China;
    4.College of Veterinary Medicine, Gansu
    Agricultural University, Lanzhou 730070, China
  • Received:2008-02-28 Online:2009-01-25 Published:2009-02-20

Abstract: Three one and a half year old Gansu high mountain fine wool wethers (average live weight 22.5 kg) were fitted with permanent ruminal fistulas and a 3×3 Latin square design was used to study the effects of three combinations of diet (Ⅰ control, Ⅱ with 8% beet pulp, and Ⅲ with 8% apple pomace) on apparent digestion and retention of nitrogen. There were three 19 day periods (a 10-d adjustment followed by 9-d of collections) for each period. Apparent digested DM, OM and digestibility of DM and OM of wethers fed with diets Ⅰ andⅡ were significantly greater than those of Ⅲ (P<0.05). The digested NDF, ADF and the digestibility of NDF and ADF in dietⅡ were greater than those of dietⅠ, while those of diet Ⅲ were lower by comparison with these of diet Ⅰ. The digested N of diet Ⅱ was significantly (P<0.05)greater than that ofⅠ and N digestibility of Ⅱ was significantly (P<0.05) greater than those of Ⅰ and Ⅲ. There was more retained N of Ⅱ than of Ⅰ and Ⅲ. The apparent digestibility of Ca for diet Ⅱ was significantly (P<0.01) greater than those ofⅠand of Ⅲ(P<0.05), and that of Ⅲ was significantly greater than that of Ⅰ. The digested P of diet Ⅲ was (P<0.05)significantly greater than those of Ⅰand Ⅱ. The apparent digestibility of P in diet Ⅲ was greater compared with Ⅰ and Ⅱ.

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