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Supplementation with mulberry leaves improves growth performance and meat quality of Xiangdong black goats |
Yang Luo1,2,3 
, Shuai Gao3
, Ao Sun3
, Jianbo Li3
, Haobang Li3
, Kangle Yi3
, Renke Hu3,*
, Bin Yang4,*
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1Key Laboratory of Molecular Animal Nutrition, Ministry of Education, Zhejiang University, Hangzhou 310058, China
2College of Animal Science and Technology, Guangxi University, Nanning 530004, China
3Hunan Institute of Animal and Veterinary Science, Changsha 410130, China
4School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China |
Correspondence:
Renke Hu,Email: 1099244836@qq.com
Bin Yang, Tel: +86-0571-85070370, Fax: +86-0571-85070370, Email: binyang@zust.edu.cn
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Received: 21 June 2024 • Revised: 16 July 2024 • Accepted: 17 August 2024 |
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| Abstract |
Objective
Mulberry (Morus alba) leaf (ML) is a high-quality feed source for ruminants, while it is unclear whether it can enhance the growth performance and meat quality of Xiangdong black goats.
Methods
In this study, we investigated the effects of ML supplementation (0, 5, 10, 15, and 20%) on the growth performance, serum variables, and the profiles of amino acids and fatty acids in the muscle of Xiangdong black goats.
Results
Results showed that the final body weight, initial and final dry matter intake, and average daily gain increased linearly and quadratically with the increasing ML content (P < 0.05). The serum concentrations of total antioxidant capacity (T-AOC) increased linearly, while immunoglobulin G (IgG) increased quadratically with the increasing ML content (P < 0.05). Conversely, the saturated fatty acids (SFA) content in meat decreased linearly with the increasing ML content (P < 0.05). Compared to goats without ML supplementation, goats fed with 15% ML showed significant increases in serum concentrations of T-AOC, superoxide dismutase, catalase, and IgG (P < 0.05). Furthermore, goats fed with 20% ML displayed significant decreases in SFA (C18:0) content, compared to goats without ML supplementation (P < 0.05).
Conclusion
These results suggest that ML supplementation promotes the growth performance of goats. A diet containing 15% ML showed better effects in promoting antioxidant and immunomodulatory activities, while a diet with 20% ML was more effective in enhancing meat flavor in Xiangdong black goats.
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| Keywords:
Antioxidant Activity; Growth Performance; Meat Quality; Mulberry Leaf; Xiangdong Black Goat |
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