China Animal Husbandry and Veterinary Medicine ›› 2023, Vol. 50 ›› Issue (10): 3959-3966.doi: 10.16431/j.cnki.1671-7236.2023.10.009

• Nutrition and Feed • Previous Articles     Next Articles

Effects of Dietary Metabolic Energy Level on Growth Performance,Slaughter Performance and Meat Quality of Male Pheasants During 20-22 Weeks Old

SUN Weili1,2,3, CHEN Lihong2, LIU Keyuan1, FU Xiyao2, LI Guangyu1,2   

  1. 1. College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China;
    2. Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, China;
    3. Hebei Provincial Key Laboratory for Mining and Innovation of Characteristic Animal Germplasm Resources, Qinhuangdao 066600, China
  • Received:2023-03-20 Online:2023-10-05 Published:2023-09-26

Abstract: 【Objective】 The aim of this study was to explore the appropriate metabolic energy levels of 20-22 weeks old male pheasants,providing data reference for scientific breeding of pheasants and improving production efficiency.【Method】 A total of 160 healthy male pheasants at 20 weeks of age with similar weight were randomly divided into 4 groups,each group was set up with 5 replicates,each replicate was 8 chickens,and the dietary metabolic energy levels of each group were 11.30,11.72,12.14 and 12.56 MJ/kg,respectively,with a pre-trial period of 5 days and a positive trial period of 16 days.The growth performance,slaughter performance,and meat quality of pheasants were measured.【Result】 The level of dietary metabolic energy affected the average daily gain (P<0.01),the slaughter rate,total purification rate and leg muscle rate,and the crude protein content of pectoral muscle (P<0.05),while had no significant effect on the organ index of pheasants (P>0.05).The average daily gain of 11.72 and 12.14 MJ/kg group were higher than that of 11.30 (P<0.01) and 12.56 MJ/kg group (P<0.05).The slaughter rate and total purification rate of pheasants in the 12.56 MJ/kg group were significantly higher than those in the other groups (P<0.05),and the leg muscle rate in the 11.72 MJ/kg group was higher than that in 11.30 and 12.14 MJ/kg group (P<0.05).The crude protein content of pectoral muscle in 12.14 and 12.56 MJ/kg group were higher than that in 11.30 MJ/kg group (P<0.05).Using the average daily gain as the estimation indicator,the optimal metabolic energy level for male pheasants during this period was to be 11.98 MJ/kg through a univariate quadratic regression model analysis.【Conclusion】 In summary,under the conditions of this experiment,the suitable metabolic energy level of male pheasants during 20-22 weeks old was 11.98-12.56 MJ/kg.

Key words: metabolic energy; male pheasant; growth performance; organ index; slaughtering performance; muscle chemical composition

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