China Animal Husbandry and Veterinary Medicine ›› 2020, Vol. 47 ›› Issue (8): 2413-2422.doi: 10.16431/j.cnki.1671-7236.2020.08.009

• Animal Nutrition and Feed Science • Previous Articles     Next Articles

Evaluation Methods of Protein and Its Application in Nutritional Value Assessment of Feedstuff

CHEN Chen1, QI Min2, YANG Xiujuan1, HUANG Wei3, DENG Bin4, CAO Zhiyong5   

  1. 1. Yunnan Key Laboratory of Animal Nutrition and Feed Science, Faculty of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China;
    2. Beijing No. 80 School of Guandu District in Kunming City, Kunming 650217, China;
    3. Development Planning Office of Kunming University, Kunming 650200, China;
    4. Yunnan Rural Science and Technology Service Center, Kunming 650021, China;
    5. Big Data College, Yunnan Agricultural University, Kunming 650201, China
  • Received:2019-12-03 Online:2020-08-20 Published:2020-08-15

Abstract: Feedstuff proteins have a directly influence on nutrition and growth of animals.Now,the evaluations of feedstuff protein are mostly based on the methods of biological value,while the study of protein scoring are rare.The authors summarized the six common international methods of protein nutritive value evaluation at present,using the nutritional requirements of 50-75 kg growing pigs(NRC,2012) as reference proteins,applying AAS,CS,EAAI,EAARR,SRCAA and FCM as evaluation criterion to evaluate the nutritional value of 9 common feedstuff (maize,wheat,barley,soybean meal,cottonseed meal,rapeseed dregs,corn gluten meal,fish meal and whey powder) protein.Furthermore,the application results of six protein nutrition evaluation methods in the evaluation and analysis of feed nutrition value were obtained.Through analysis and discussion,which showed that EAARR and FCM were more scientific and reasonable than other methods in protein evaluation,could provide reference for formula design of growing pig feed.

Key words: feedstuff; protein quality; evaluation methods

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