文献类型：期刊文献

英文题名：Effects of varied molecular weight of chitosan oligosaccharides on growth performance, carcass trait, meat quality, and fat metabolism in indigenous yellow-feathered chickens

作者：Wang, R. L.[1,3];Chen, J. W.[1];Gooneratne, R.[2];He, X. P.[1];Huang, J. Z.[1];Zhao, Z. H.[1,3]

机构：[1]Guangdong Ocean Univ, Dept Anim Sci, Zhanjiang 524088, Peoples R China;[2]Lincoln Univ, Fac Agr & Life Sci, Dept Wine Food & Mol Biosci, Canterbury, New Zealand;[3]Guangdong Ocean Univ, Shenzhen Inst, Shenzhen 518108, Peoples R China

年份：2022

卷号：31

期号：1

外文期刊名：JOURNAL OF APPLIED POULTRY RESEARCH

收录：SCI-EXPANDED(收录号：WOS:000744192300007)、、Scopus(收录号：2-s2.0-85120968831)、WOS

基金：This research was funded by Shenzhen Projects for Basic Research of China, grant number: JCYJ20170818111931279.

语种：英文

外文关键词：chitosan oligosaccharide; molecular weight; meat quality; fat metabolism; chicken

外文摘要：The effect of varied molecular weight (MW) chitosan oligosaccharides (COS) supplementation on growth performance, carcass trait, meat quality and fat metabolism in indigenous yellow-feathered chickens was investigated. A total of 400-day-old female Lingnanhuang yellow-feathered chicks were randomly allotted to 1 of 5 treatments (8 replicate cages of 10 chicks per cage) and fed a corn-soybean meal based diet containing 5.8 g/kg of COS with MW of 0 (control), 600 (Cs6), 1,200 (Cs12), 2,400 (Cs24), and 3,600 (Cs36) Da for 56 d. The birds in Cs36 group exhibited better overall (0-56 d) feed efficiency (P < 0.05). Both Cs24 and Cs36 feeding decreased (P < 0.05) the liver and abdominal fat but only Cs36 decreased (P < 0.05) the subcutaneous fat. In the Cs24 and Cs36 groups, there was an improvement in the meat quality as evidenced by a decrease (P < 0.05) in drip loss of breast muscle as compared with the control and Cs6 groups. The liver lipid catabolism was enhanced (P < 0.05) by the 2,400 Da and 3,600 Da COS caused by an increase in lipoprotein lipase activity and mRNA expression, which might also be the reason for the reduced carcass fat deposition. In conclusion, the 3,600 Da COS supplementation significantly improved the overall feed conversion ratio of indigenous yellow-feathered chickens. Both 2,400 Da and 3,600 Da COS were effective in reducing liver and abdominal fat deposition, decreasing drip loss of breast muscle and promoting liver fat catabolism. The study highlighted the importance of the chitosan oligosaccharide MW when added to chicken diets.