›› 2015, Vol. 42 ›› Issue (7): 1724-1731.doi: 10.16431/j.cnki.1671-7236.2015.07.016

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The Digestion of Guizhou White Goat on the Four Forages and its Enlightenment on Rocky Desertification Control

ZHANG Yu1,2, XIONG Kang-ning1,2, ZHANG Jin-hua3, WANG Yuan-su1,2, CHI Yong-kuan1,2   

  1. 1. South China Institute of Karst, Guizhou Normal University, Guiyang 550001, China;
    2. State Key Engineering Technology Research Center for Karst Rocky Desertification Rehabilitation of China, Guiyang 550001, China;
    3. Institute of Animal Husbandry and Veterinary, Guizhou Province, Guiyang 550005, China
  • Revised:2015-04-22 Online:2015-07-20 Published:2015-07-23

Abstract: In order to solve the problem of the lack of nutritional value parameter of White goats,better understand the metabolism rule in White goats fed pasture,and provide a reference to the optimization allocation of grassland nutrition and healthful aquaculture of white goats in rocky desertification control in Guizhou province.Six healthy Guizhou White goats with rumen cannulas were selected,taking Medicago sativa,Trifolium repens,Lolium perenne and Bromus catharticus four kinds of forages in Karst areas as the research object,nylon bag technique was used to determine the degradability dynamics and degradation model parameters of DM,CP,NDF and ADF.The results showed that among four kinds of forages at 72 h,the highest degradation rate and effective degradability rate of DM was white clover (P<0.05),the decrease in the sequence were alfalfa,rescuegrass and perennial ryegrass;The highest degradation rate and effective degradability rate of CP was alfalfa (P<0.05),followed by were white clover,rescuegrass and perennial ryegrass;While the rescuegrass and alfalfa showed the best for NDF and ADF,white clover and perennial ryegrass came second.The analysis showed that the four kinds of nutrients were absorbed well by White goat,and the alfalfa performance was the most superior which could promote the development of grassland animal husbandry in Karst areas.

Key words: Karst; forage; White goat; digestive regularity

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