Effects of Different Molecular Weights of Chitosan on Growth Performance, Lipid Metabolism, Slaughter Performance and Meat Quality of Yellow-Feather Broilers

HE Xueping; CHEN Jingwen; WANG Runlian; DU Bingwang; LIANG Cuiping; WANG Zhongyan; LIU Guoqing

doi:10.3969/j.issn.1006-267x.2020.07.025

2020 , Vol. 32 >Issue 7: 3154 - 3161

DOI: https://doi.org/10.3969/j.issn.1006-267x.2020.07.025

Effects of Different Molecular Weights of Chitosan on Growth Performance, Lipid Metabolism, Slaughter Performance and Meat Quality of Yellow-Feather Broilers

HE Xueping ,
CHEN Jingwen ,
WANG Runlian ,
DU Bingwang ,
LIANG Cuiping ,
WANG Zhongyan ,
LIU Guoqing

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1. Shenzhen Institute of Guangdong Ocean University, Shenzhen 518108, China;
2. Department of Animal Science, Guangdong Ocean University, Zhanjiang 524088, China;
3. Guangzhou Applon Technology Co., Ltd., Guangzhou 510310, China

Received date: 2020-01-20

Online published: 2020-07-15

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Abstract

This study was conducted to investigate the effects of different molecular weights of chitosan on growth performance, lipid metabolism, slaughter performance and meat quality of yellow-feather broilers. A Single factor complete random design was adopted, and a total of 320 twenty-eight-day-old female Xing-Guang-Huang chickens (fast yellow-feather broilers) were randomly divided into 5 groups with 8 replicates per group and 8 birds per replicate. Broilers in each group were fed a basal diet (control group) and experimental diets which supplemented with different molecular weights (600, 1 117, 2 374 and 3 600 u) chitosan, respectively. The experiment lasted for 28 days. The results showed as follows:1) there were no significant differences in the average daily gain, average daily feed intake and feed to gain ratio among all groups (P>0.05). 2) There were no significant differences in the metabolic rates of dry matter and ash among all groups (P>0.05). Chitosan supplementation had a tendency to increase the crude protein metabolic rate (P=0.086). 3) There were no significant differences in the contents of nonesterified fatty acid and low density lipoprotein cholesterol in serum among all groups (P>0.05). Chitosan supplementation had a tendency to reduce the contents of triglycerides and total cholesterol in serum (P=0.087 and P=0.077), and the serum high density lipoprotein cholesterol content of 3 600 u chitosan group was significantly lower than that of other groups (P<0.05). 4) There were no significant differences in the dressed rate, half eviscerated rate, all eviscerated rate, breast muscle rate and leg muscle rate among all groups (P>0.05). 5) There were no significant differences in the pH, meat color, shear force and contents of dry matter, crude protein and total amino acid in breast muscle among all groups (P>0.05). The drip loss in breast muscle of 2 374 and 3 600 u chitosan groups was significantly lower than that of the control group (P<0.05), and the contents of ether extract and inosine monophosphate in breast muscle were tended to lowest and highest in 2 374 u chitosan group (P=0.091 and P=0.076). In conclusion, dietary different molecular weights of chitosan have no significant effects on growth performance and slaughter performance of yellow-feather broilers, but have obvious effects on lipid metabolism and meat quality. Dietary supplemented the chitosan with molecular weight of 3 600 u can significantly decrease the ether extract metabolic rate; dietary supplemented the chitosan with molecular weight of 2 374 and 3 600 u can decrease the serum fat level, decrease the drip loss in breast muscle, and improve the meat quality.

Key words： yellow-feather broilers; chitosan; growth performance; slaughter performance; lipid metabolism; meat quality

Cite this article

HE Xueping , CHEN Jingwen , WANG Runlian , DU Bingwang , LIANG Cuiping , WANG Zhongyan , LIU Guoqing . Effects of Different Molecular Weights of Chitosan on Growth Performance, Lipid Metabolism, Slaughter Performance and Meat Quality of Yellow-Feather Broilers[J]. Chinese Journal of Animal Nutrition, 2020 , 32(7) : 3154 -3161 . DOI: 10.3969/j.issn.1006-267x.2020.07.025

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