Effects of Saccharified Corn Straw on Growth Performance, Nutrient Metabolic Rates, Slaughter Performance and Meat Quality of Broilers Aged from 22 to 42 Days

  • WANG Ping ,
  • LIU Mengjie ,
  • CHANG Juan ,
  • YIN Qingqiang ,
  • LIU Chaoqi ,
  • DANG Xiaowei ,
  • GAO Tianzeng
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  • 1. College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, China;
    2. Henan Delin Biological Products Co., Ltd., Xinxiang 453000, China;
    3. Henan Guangan Biotechnological Co., Ltd., Zhengzhou 450001, China

Received date: 2020-06-18

  Online published: 2021-01-18

Abstract

The purpose of this study was to investigate the effects of saccharified corn straw (SCS) on growth performance, nutrient metabolic rates, slaughter performance and meat quality of broilers aged from 22 to 42 days. A total of 200 healthy 22-day-old female Arbor Acres (AA) broilers were randomly divided into 4 groups with 5 replicates per group and 10 broilers per replicate. Broilers in the control group were fed a basal diet, and others in experimental groups were fed basal diets supplemented with 4% (group Ⅰ), 8% (group Ⅱ) and 12% (group Ⅲ) SCS, respectively. The experiment lasted for 21 days. The results showed as follows: 1) the average daily feed intake of groups Ⅰ, Ⅱ and Ⅲ was significantly higher than that of the control group (P<0.05), and the final weight and average body gain of group Ⅱ were significantly higher than those of the control group (P<0.05). There was no significant difference in feed to gain ratio among all groups (P>0.05). 2) There were no significant differences in metabolic rates of energy, dry matter, crude protein, ether extract, calcium, phosphorus, neutral detergent fiber and hemicellulose among all groups (P>0.05). The metabolic rates of acid detergent fiber and cellulose of groups Ⅱ and Ⅲ were significantly lower than those of the control group (P<0.05). 3) There were no significant differences in dressing percentage, leg muscle percentage and abdominal fat percentage among all groups (P>0.05). The eviscerated percentage of groups Ⅰ, Ⅱ and Ⅲ was significantly higher than that of the control group (P<0.05), and the breast muscle percentage of group Ⅰ was significantly higher than that of the control group (P<0.05). 4) The 45 min pH in breaset muscle of groups Ⅰ and Ⅲ was significantly lower than that of the control group (P<0.05). The drip loss in breast muscle of group Ⅲ was significantly lower than that of group Ⅰ (P<0.05), and the drip loss in leg muscle of group Ⅲ was significantly lower than that of other groups (P<0.05). The cooked meat rate in leg muscle of groups Ⅰ, Ⅱ and Ⅲ was significantly lower than that of the control group (P<0.05). The shear force in breast muscle of group Ⅲ was significantly higher than that of other groups (P<0.05). The redness (a*) value in breast muscle of group Ⅰ was significantly lower than that of the control group (P<0.05), and the a* value in leg muscle of group Ⅲ was significantly lower than that of the control group (P<0.05). In conclusion, dietary SCS supplementation of broilers aged from 22 to 42 days can improve the growth of broilers, increase the eviscerated percentage, but has a certain effect on meat quality, it is indicated that dietary supplementation of 4% to 12% SCS replace energy feed is feasible.

Cite this article

WANG Ping , LIU Mengjie , CHANG Juan , YIN Qingqiang , LIU Chaoqi , DANG Xiaowei , GAO Tianzeng . Effects of Saccharified Corn Straw on Growth Performance, Nutrient Metabolic Rates, Slaughter Performance and Meat Quality of Broilers Aged from 22 to 42 Days[J]. Chinese Journal of Animal Nutrition, 2021 , 33(1) : 248 -256 . DOI: 10.3969/j.issn.1006-267x.2021.01.026

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