FEED RESOURCES DEVELOPMENT

Nutritional Values of Steamed and Enzymatic Hydrolysis Feather Meal and Availability of Energy and Amino Acid in Meat Ducks

  • LAI Anqiang ,
  • DONG Guozhong ,
  • SU Ning ,
  • SONG Daijun ,
  • TAO Li ,
  • LIU Hongwei ,
  • FU Xuemei ,
  • CHEN Jie
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  • 1. College of Animal Science and Technology, Southwest University, Chongqing 400716, China;
    2. Sichuan Giastar Group Co. Ltd., Chengdu 610021, China

Received date: 2015-11-25

  Online published: 2016-05-24

Abstract

This experiment was conducted to evaluate metabolic rate of energy and the nutritive value of amino acids of the three kinds of steamed and enzymatic hydrolysis feather meal by true metabolizable energy (TME) method, and to offer the theoretical foundation for application of feather meal. Three kinds of feather meal from 42-day-old duck feather meal (feather meal Ⅰ), 550-day-old Lohmann layer feather meal (feather meal Ⅱ) and 100-day-old yellow-feathered broiler feather meal (feather meal Ⅲ) were evaluated in this study. Twenty 42-day-old Cherry Valley ducks were randomly divided into 4 treatments with 5 replicates per treatment and 1 duck per replicate. One treatment was fasted treatment and other 3 treatments were fed with feather meal Ⅰ, feather meal Ⅱ and feather meal Ⅲ, respectively. The experiment lasted for 7 days. The results showed as follows:1) basis on the dry matter, the gross energy of feather meals Ⅰ, Ⅱ and Ⅲ were 21.31, 21.02 and 20.18 MJ/kg, respectively; the apparent metabolizable energy were 13.71, 12.29 and 12.10 kJ/kg, respectively; the true metabolizable energy were 14.83, 13.42 and 13.22 MJ/kg, respectively. 2) The contents of crude protein basis on dry matter of the three kinds of feather meal were 91.05%, 87.31% and 91.06%, respectively. The total amino acid contents of three kinds of feather meal were all above 80%, significant differences were found in the contents of amino acid of three kinds feather meal. 3) The apparent metabolic rate of total amino acid of feather meals Ⅰ, Ⅱ and Ⅲ were 81.51%, 73.07% and 76.85%, respectively; the true metabolic rate of total amino acid were 85.09%, 76.89% and 80.43%, respectively. Significant differences were also found in the contents of apparent and true available amino acids of the three kinds of feather meal (P<0.05). It is concluded that evaluate the energy and the nutritive value of amino acid of the three kinds of feather meal by TME method find that there are significant differences of the metabolic energy, apparent and true available amino acids among three kinds of feather meal. The gross energy, metabolizable energy, crud protein and the metabolic rate of total amino acids of feather meals Ⅰ are higher than that of feather meal Ⅱ and Ⅲ.

Cite this article

LAI Anqiang , DONG Guozhong , SU Ning , SONG Daijun , TAO Li , LIU Hongwei , FU Xuemei , CHEN Jie . Nutritional Values of Steamed and Enzymatic Hydrolysis Feather Meal and Availability of Energy and Amino Acid in Meat Ducks[J]. Chinese Journal of Animal Nutrition, 2016 , 28(5) : 1471 -1479 . DOI: 10.3969/j.issn.1006-267x.2016.05.023

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