RUMINANT AND HERBIVORE NUTRITION

Effects of Different Roughage Combinations on Dietary Nutrient Apparent Digestibility and Nitrogen Balance of Goats

  • GAO Lipeng ,
  • MENG Meijuan ,
  • BAI Yunfeng ,
  • TU Yuanlu ,
  • YAN Shaohua ,
  • LIU Jian
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  • Animal Science Base of Jiangsu Academy of Agricultural Science, Nanjing 210014, China

Received date: 2016-02-23

  Online published: 2016-08-17

Abstract

This experiment was conducted to investigate the effects of different roughage combinations on dietary nutrient apparent digestibility and nitrogen balance of goats. Four healthy goats (Boer goats×Xuhuai goats) with an average body weight of (26.63±2.60) kg were used in a 4×4 Latin square design. Roughage for basal diet was straw (A), and straw in experimental diets was partly substituted by soybean hulls (B), Enoki mushroom residues (C) and soybean hulls+Enoki mushroom residues (D), respectively. The four diets had similar levels of nitrogen, energy and fiber. The experiment included four stages with 15 d per stage (10 d for preliminary trial and 5 d for formal trial. The results showed as follows:1) apparent digestibility of dry matter (DM), acid detergent fiber (ADF), phosphorus and gross energy had no difference in four diets (P>0.05). 2) Compared with diet A, diet D significantly improved apparent digestibility of organic matter (OM) and neutral detergent fiber (NDF) (P<0.05), diet B had no significant difference with diet A (P>0.05), calcium apparent digestibility of diet B, diet C and diet D was not significantly different (P>0.05), which was significantly higher than that of diet A (P<0.05). 3) Compared with diet A, diet B, diet C and diet D significantly improved nitrogen retention rate and nitrogen biological value (P<0.05). It is concluded that compared with straw as single roughage, using soybean hulls, Enoki mushroom residues or their combination to partly substitute straw can improve apparent digestibility of OM, NDF and calcium, nitrogen retention rate and nitrogen biological value; it can obtain better effects that using the combination of soybean hulls and Enoki mushroom residues to partly substitute straw as roughage under conditions in the present experiment.

Cite this article

GAO Lipeng , MENG Meijuan , BAI Yunfeng , TU Yuanlu , YAN Shaohua , LIU Jian . Effects of Different Roughage Combinations on Dietary Nutrient Apparent Digestibility and Nitrogen Balance of Goats[J]. Chinese Journal of Animal Nutrition, 2016 , 28(8) : 2396 -2403 . DOI: 10.3969/j.issn.1006-267x.2016.08.010

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