Effects of dietary L-tryptophan supplementation on agonistic behavior, feeding behavior, growth performance, and nutritional composition of the Chinese mitten crab (Eriocheir sinensis)

Yang-Yang Pang; Jun-Yan Zhang; Qing Chen; Chao Niu; Ao-Ya Shi; Dong-Xin Zhang; Xue-Li Ma; Ying Zhang; Ya-Meng Song; Meng-Na Hou; Xing-Liang Shi; Xiao-Zhen Yang; Yong-Xu Cheng

Aquaculture Reports (Apr 2024)

Effects of dietary L-tryptophan supplementation on agonistic behavior, feeding behavior, growth performance, and nutritional composition of the Chinese mitten crab (Eriocheir sinensis)

Yang-Yang Pang,
Jun-Yan Zhang,
Qing Chen,
Chao Niu,
Ao-Ya Shi,
Dong-Xin Zhang,
Xue-Li Ma,
Ying Zhang,
Ya-Meng Song,
Meng-Na Hou,
Xing-Liang Shi,
Xiao-Zhen Yang,
Yong-Xu Cheng

Affiliations

Yang-Yang Pang: National Demonstration Center for Experimental Fisheries Science Education, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, China; Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai, China
Jun-Yan Zhang: National Demonstration Center for Experimental Fisheries Science Education, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, China; Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai, China
Qing Chen: National Demonstration Center for Experimental Fisheries Science Education, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, China; Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai, China
Chao Niu: National Demonstration Center for Experimental Fisheries Science Education, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, China; Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai, China
Ao-Ya Shi: National Demonstration Center for Experimental Fisheries Science Education, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, China; Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai, China
Dong-Xin Zhang: National Demonstration Center for Experimental Fisheries Science Education, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, China; Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai, China
Xue-Li Ma: National Demonstration Center for Experimental Fisheries Science Education, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, China; Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai, China
Ying Zhang: National Demonstration Center for Experimental Fisheries Science Education, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, China; Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai, China
Ya-Meng Song: National Demonstration Center for Experimental Fisheries Science Education, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, China; Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai, China
Meng-Na Hou: National Demonstration Center for Experimental Fisheries Science Education, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, China; Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai, China
Xing-Liang Shi: National Demonstration Center for Experimental Fisheries Science Education, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, China; Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai, China
Xiao-Zhen Yang: National Demonstration Center for Experimental Fisheries Science Education, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, China; Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai, China; Correspondence to: Key Laboratory of Freshwater Aquatic Genetic Resources, Shanghai Ocean University, No. 999, Huchenghuan Road, Shanghai 201306, China
Yong-Xu Cheng: National Demonstration Center for Experimental Fisheries Science Education, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, China; Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai, China; Correspondence to: Key Laboratory of Freshwater Aquatic Genetic Resources, Shanghai Ocean University, No. 999, Huchenghuan Road, Shanghai 201306, China

Journal volume & issue: Vol. 35
p. 101985

Abstract

Read online

In the pond culture of Chinese mitten crabs (Eriocheir sinensis), high stocking densities usually increase the frequency of agonistic behavior, which can directly impact crab integrity, survival, and growth and result in economic losses. We hoped to reduce agonistic behavior by adding additives to feed. In this study, we first observed the agonistic behavior of E. sinensis in 5 molting periods (from first molting to puberty molting) during the adult grow-out stage. Then, we assessed the effects of L-TRP as a feed additive on the agonistic behavior of juvenile, precocious, subadult, and adult crabs. Finally, we performed 106 days of cage culture to assess the effects of L-TRP on feeding behavior, animal vitality, growth performance, and nutritional composition. The results showed that the intensity of agonistic behavior was significantly higher after puberty molting than in other molting periods during the adult grow-out stage. Moreover, L-TRP supplementation inhibited the agonistic behavior of juvenile, subadult, and adult crabs, but it did not affect the precocious crabs. During cage culture, L-TRP significantly improved crab vitality after 3 weeks but not after 6 and 9 weeks, but it reduced the ingestion rate after 9 weeks. Moreover, the L-TRP group showed a significant increase in the weight gain rate and speciﬁc growth rate after the fourth molting. After 106 days of culture, the content of proline and fatty acids in the muscle decreased significantly after L-TRP diet supplementation. Some long-chain polyunsaturated fatty acids also decreased significantly in the hepatopancreas. However, we must focus on the adverse effects of L-TRP on Pro and fatty acid composition. Further research is required on the balance between inhibition of agonistic behavior and effects of L-TRP on the nutritional quality of E. sinensis.

Published in Aquaculture Reports

ISSN: 2352-5134 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Agriculture: Aquaculture. Fisheries. Angling
Website: http://www.journals.elsevier.com/aquaculture-reports/

About the journal

Abstract

Keywords