ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2014, Vol. 45 ›› Issue (4): 578-586.doi: 10.11843/j.issn.0366-6964.2014.04.011

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The Study on Degradability of Melamine and Effcet of Fermentation Characteristics in vitro

JIANG Cheng-gang1,YAN Gui-long2,TU Yan1,ZHANG Nai-feng1,DIAO Qi-yu1*   

  1. (1.Feed Research Institute,Chinese Academy of Agricultural Sciences,Beijing 100081, China;2.Hebei North University,Zhangjiakou 075000, China)
  • Received:2014-01-15 Online:2014-04-23 Published:2014-04-23

Abstract:

This experiment was conducted to investigate the effects of melamine on ruminal fermentation parameters in vitro.Melamine was supplemented at graded levels:0,2,10,50,250,1 250 mg•L-1,respectively.Incubation mediums were taken after incubation of 0,1,2,4,6,8,12,24 and 48 h,respectively.Melamine,total fatty acid (TVFA),acetic acid,propionic acid,butyric acid,valeric acid,isobutyric acid,isovaleric acid and ammonia nitrogen concentration were determined.The result showed that melamine supplementation resulted in no change in MEL degradation during 48 h incubation (P>0.05) but decreased dry matter degradability (DMD)(P<0.05).With MEL supplementation at the level of 1 250 mg•L-1,molar proportion of propionic acid decreased(P<0.05)while ratio of acetic acid to propionic acid increased(P<0.05).Molar proportion of butyric acid increased(P<0.05)with MEL supplementation.Melamine showed an inhibitory effect on ruminal microbial fermentation and might not be effectively used by ruminal microbes.Therefore,MEL could not be used as a non-protein nitrogen source for feeding ruminant animals.

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