Effects of Diet with Different Levels of Metabolizable Energy on Digestive Organs Development, Muscle Fatty Acids Contents and Immune Organs Indexes of Saibei Silkies
GUAN Lihui
LIU Haibin
ZHANG Liyong
WANG Zhiwei
SU Tijun
Abstract：In order to investigate the effects of diet with different levels of metabolizable energy on growth and development of Saibei silkies,and so as to provide the theoretical basis for selecting the dietary with reasonable energy level at different stages of Saibei silkies,a total of 400 1-day-old Saibei silkies were randomly assigned into 5 groups with 4 replicates per group and 20 chickens per replicate,Ⅰ,Ⅱ,Ⅲ,Ⅳand Ⅴ match along with 10.38,10.94,11.51,12.34,12.96 MJ/kg metabolizable energy(ME) adding into daily diet,the experiment was conducted for 120 d.Relative quality of digestive organs,long digestive tract,immune organ index and relative content of muscle fatty acid were analyzed after slaughter.The results showed as follows:when compared with group Ⅰ,relative qualities of glandular stomach,muscle stomach,jejunum,ileum,cecum in group Ⅴ were significantly increased by 16.67％,20.65％,26.60％,25.26％,21.35％;the length of duodenum,ileum and caecum were significantly increased by 18.28％,10.45 ％,18.78 ％;linolenic acid,linoleic acid,eicosatetraenoic acid,eicosapentaenoic acid,docosahexaenoic acid,hexadecanoic acid and octadecanoic acid of breast muscle and leg muscle were significantly improved;liver index,spleen index,pancreas index,thymus indexwere significantly increased by 10.47％,15.68％,15.03 ％,15.08％.In conclusion,the optimal ME for Saibei silkies was 12.96 MJ/kg.
Keywords：ME levelSaibei silkiesdigestive organsmuscle fatty acidsimmune organs indexes
Publication Date：2017-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：4( 106-109 )