Analysis of Nutritional Component Contents in Egg, Eggshell and Feather of Chinese Monal (Lophophorus lhuysii)

  • XIA Shanshan ,
  • CHEN Li ,
  • CHEN Dongmei ,
  • ZHANG Long ,
  • WANG Bin ,
  • LI Yun ,
  • ZHOU Caiquan
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  • 1. Key Laboratory of Southwest China Wildlife Resources Conservation(Ministry of Education), Institute of Ecology, China West Normal University, China West Normal University, Nanchong 637002, China;
    2. Fengtongzhai National Nature Reserve, Baoxing 625700, China;
    3. Institute of Rare Animal & Plant, Nanchong 637002, China

Received date: 2019-09-12

  Online published: 2020-03-13

Abstract

This experiment was conducted to the determine and analyze of the nutritional component contents in egg, eggshell and feather of Chinese monal (Lophophorus lhuysii), in order to provide scientific basis for diet formulation of the artificially raised and the environmental protection of the wild Chinese monal. We randomly selected 13 unfertilized eggs and 20 feathers from the captive Chinese monal, as well as eggshell fragments and 20 feathers from the wild Chinese monal, all samples were collected within Sichuan Fengtongzhai National Nature Reserve. The nutritional component contents in egg, eggshell and feather samples were determined. The results showed as follows:1) among the 18 kinds of amino acids in egg and feather, the other 17 kinds of amino acids in caged and wild feathers were higher than those in egg except tryptophan. The ratios of essential amino acids (EAA)/non-essential amino acids (NEAA), EAA/total amino acids (TAA) and EAA/crude protein (CP) in egg were essentially the same as those in feathers. 2) The calcium (Ca) content in egg, eggshell and feather was the highest. There was no significant difference in Ca content between caged and wild eggshells (P>0.05), and no significant difference in Ca content between caged and wild feathers (P>0.05). 3) In the trace elements, the content of iron (Fe) was the highest in egg, eggshell and feather, and there was no significant difference in Fe content between caged and wild eggshells (P>0.05), and no significant difference in Fe content between caged and wild feathers (P>0.05). The reliable presence of selenium (Se), iodine (I), manganese (Mn) in eggs, Se in caged and wild eggshells and I in caged and wild feathers were not detected, because the contents of each element were under 0.1 mg/kg. 4) The content of plumbum (Pb) in eggshell was significantly higher than that in egg and feather (P<0.01). The Pb content in wild eggshell was significantly higher than that in caged eggshell (P<0.01). The conclusions are as follows:1) the contents of amino acids, mineral elements in egg and feather and the mineral elements in eggshell determined in this experiment can provide a reference for the preparation of diet for breeding period of caged Chinese monal; 2) the lack of some trace elements in egg, eggshell, feather of caged Chinese monal may be related to the deficiency of dietary nutrition, and the content of Pb is higher, which may be related to the cage rearing environment; 3) the high content of Pb in eggshell of wild Chinese monal is indicative of the pollution in the living environment of the wild Chinese monal.

Cite this article

XIA Shanshan , CHEN Li , CHEN Dongmei , ZHANG Long , WANG Bin , LI Yun , ZHOU Caiquan . Analysis of Nutritional Component Contents in Egg, Eggshell and Feather of Chinese Monal (Lophophorus lhuysii)[J]. Chinese Journal of Animal Nutrition, 2020 , 32(3) : 1434 -1444 . DOI: 10.3969/j.issn.1006-267x.2020.03.050

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