Effects of Plotytarya strohilacea Sieb. et Zuce Tannin on Growth Performance, Slaughter Performance, Organ Indexes, Meat Quality, Antioxidant Function and Intestinal Development of Broilers

  • CONG Guanglei ,
  • XIAO Yunqi ,
  • ZHANG Qianyun ,
  • WANG Zhiyue ,
  • ZHANG Shan ,
  • YAN Lei ,
  • LIANG Mingzhen ,
  • SHI Shourong
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  • 1. Institute of Poultry, Chinese Academy of Agricultural Sciences, Yangzhou 225125, China;
    2. School of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China;
    3. School of Animal Science and Technology, Guangxi University, Nanning 530004, China;
    4. Shandong New Hope Liuhe Group Co., Ltd., Qingdao 266061, China

Received date: 2020-10-22

  Online published: 2021-05-14

Supported by

 

Abstract

The purpose of this experiment is to study the effects of Plotytarya strohilacea Sieb. et Zuce tannin on growth performance, slaughter performance, organ indexes, meat quality, antioxidant function and intestinal development of broilers. A total of 288 one-day-old male Arbor Acres (AA) broilers were selected and randomly divided into 4 groups with 6 replicates in each group and 12 broilers in each replicate. Broilers in the control group (PT0 group) was fed a basal diet, and others in experimental groups were fed basal diets supplemented with 100 (PT100 group), 500 (PT500 group) and 1 000 mg/kg (PT1 000 group) Plotytarya strohilacea Sieb. et Zuce tannin, respectively. The experiment lasted for 42 days. The results showed as follows:1) the average daily feed intake (ADFI) of broilers during 1 to 21 days of age of PT100 group was significantly lower than that of PT0 group (P<0.05), and there was a significant quadratic correlation between ADFI and Plotytarya strohilacea Sieb. et Zuce tannin addition amount (P<0.05). Compared with PT0 group, the feed to gain ratio of broilers during 22 to 42 days of age of PT100 group had a decreasing trend (P=0.068). 2) Dietary Plotytarya strohilacea Sieb. et Zuce tannin had no significant effects on the slaughter performance and meat quality of broilers (P>0.05). 3) The gizzard index of 42-day-old broilers of PT1 000 group was significantly lower than that of other groups (P<0.05), and there was a significant quadratic correlation between gizzard index and Plotytarya strohilacea Sieb. et Zuce tannin addition amount (P<0.05). 4) The breast muscle total superoxide dismutase (T-SOD) activity of 42-day-old broilers of PT500 and PT1 000 groups was significantly higher than that of PT0 group (P<0.05), and there was a significant linear correlation between breast muscle T-SOD activity and Plotytarya strohilacea Sieb. et Zuce tannin addition amount (P<0.05). 5) Dietary Plotytarya strohilacea Sieb. et Zuce tannin had no significantly effects on the corrected length and index in duodenum and cecum of broilers (P<0.05). 6) The jejunum villi height of 21-day-old broilers of PT500 group was significantly higher than that of other groups (P<0.05), and there was a significant linear correlation between jejunum villi height and Plotytarya strohilacea Sieb. et Zuce tannin addition amount (P<0.05); the jejunum villi height of 42-day-old broilers of PT100 and PT500 and PT1 000 groups was significantly higher than that of PT0 group (P<0.05), and there were significant linear and quadratic correlations between jejunum villi height and Plotytarya strohilacea Sieb. et Zuce tannin addition amount (P<0.05). The ileum villus height/crypt depth (V/C) of 42-day-old broilers of PT0 and PT100 group was significantly higher than that of PT500 group (P<0.05), and there was a significant linear correlation between ileum V/C and Plotytarya strohilacea Sieb. et Zuce tannin addition amount (P<0.05). In conclusion, dietary Plotytarya strohilacea Sieb. et Zuce tannin can improve the antioxidant function, jejunum villi height and ileum V/C of broilers, reduce the ADFI of broilers during 1 to 21 days of age, and have a tendency to reduce the feed to gain ratio of broilers during 22 to 42 days of age. Based on various indicators, the recommended dietary addition amount of Plotytarya strohilacea Sieb. et Zuce tannin of broilers is 500 mg/kg.

Cite this article

CONG Guanglei , XIAO Yunqi , ZHANG Qianyun , WANG Zhiyue , ZHANG Shan , YAN Lei , LIANG Mingzhen , SHI Shourong . Effects of Plotytarya strohilacea Sieb. et Zuce Tannin on Growth Performance, Slaughter Performance, Organ Indexes, Meat Quality, Antioxidant Function and Intestinal Development of Broilers[J]. Chinese Journal of Animal Nutrition, 2021 , 33(5) : 2661 -2671 . DOI: 10.3969/j.issn.1006-267x.2021.05.026

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