Feed Resources Development

Comparison of Rumen Degradation Characteristics between Pennisetum sp. and Commonly Used Roughages for Dairy Cows

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  • 1. College of Animal Science and Technology, Xinjiang Agricultural University, Urumqi 830052, China;
    2. College of Animal Science and Technology, China Agricultural University, Beijing 100193, China

Received date: 2015-10-15

  Online published: 2016-03-14

Abstract

This experiment was conducted to determine the rumen degradation characteristics of 7 kinds of roughages including 2 kinds of Pennisetum sp. hay (different cutting height), 2 kinds of Pennisetum sp. silage (different cutting height), dried Chinese wildye, dried alfalfa hay and whole corn silage. Four Holstein cows with permanent ruminal cannulas were used. Nylon-bag technique was used to evaluate the ruminal degradability of dry matter (DM), crude protein (CP), neutral detergent fiber (NDF) and acid detergent fiber (ADF). The results showed as follows: 1) the content of CP in Pennisetum sp. hay was significantly high than that in dried Chinese wildye (P<0.05), but compared with the dried Chinese wildye, the content of NDF was significantly reduced (P<0.05); the contents of CP and NDF in Pennisetum sp. silage were significantly high than those in whole corn silage (P<0.05). 2) The DM effective degradability of dried alfalfa hay was significantly higher than that of whole corn silage, 2.0 m Pennisetum sp. sliage, 2.5 m Pennisetum sp. silage, 2.0 m Pennisetum sp. hay, 2.5 m Pennisetum sp. hay and dried Chinese wildye (P<0.05), which was decreased in the above order, and dried Chinese wildye was significantly lower than others (P<0.05); CP effective degradability of dried alfalfa hay was not significantly different from 2.0 m Pennisetum sp. silage (P>0.05), but was significantly higher than that of 2.5 m Pennisetum sp. silage, 2.0 m Pennisetum sp. hay, whole corn silage, 2.5 m Pennisetum sp. hay and dried Chinese wildye (P<0.05), which was decreased in the above order; NDF effective degradability of whole corn silage was not significantly different from Pennisetum sp. silage (P>0.05), and was significantly higher than that of other roughages (P<0.05); ADF effective degradability of Pennisetum sp. silage at 72 h was significantly higher than that of other roughers (P<0.05). It is concluded that Pennisetum sp. has a potential as a new non-conventional feed resource for ruminants, silage can save the nutrition composition, and can improve the rumen degradation of nutrition composition.

Cite this article

MA Jian, LIU Yanfang, DU Yun, LI Shengli, YU Xiong . Comparison of Rumen Degradation Characteristics between Pennisetum sp. and Commonly Used Roughages for Dairy Cows[J]. Chinese Journal of Animal Nutrition, 2016 , 28(3) : 816 -825 . DOI: 10.3969/j.issn.1006-267x.2016.03.022

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