The use of food waste-based diets and Napier grass to culture grass carp: growth performance and contaminants contained in cultured fish.
The present study used commercial feeds, food waste feeds, Napier grass, and mixed feeds (food waste feed to Napier grass ratio, 1:10) to feed grass carp (Ctenopharyngodon idellus). The results indicated that grass carp fed with food waste feeds and mix feeds achieved growth performance (based on specific growth rate and feed conversion ratio) that was similar to commercial feeds (p > 0.05). Concentrations of metalloid/metals in food waste feeds and polycyclic aromatic hydrocarbons (PAHs) in Napier grass were relatively higher than other types of fish feeds (p < 0.05). However, most of the metalloid/metals and PAH levels in fish fed with four types of fish feeds were not significantly different (p > 0.05). These findings show that food waste feeds are suitable for using in the production of fish feed and Napier grass can be served as supplemental feeds for grass carp, and hence reducing the production cost.
College of Resources and Environment, Sichuan Agricultural University, Chengdu, China.|Consortium on Health, Environment, Education and Research (CHEER), and Department of Science and Environmental Studies, The Hong Kong Institute of Education, Tai Po, Hong Kong, China.
Zhang
Z
Cheng
Consortium on Health, Environment, Education and Research (CHEER), and Department of Science and Environmental Studies, The Hong Kong Institute of Education, Tai Po, Hong Kong, China.
Wing-Yin
WY
Mo
Institute of the Hydrobiology, Jinan University, Guangzhou, 510632, People's Republic of China.
Xiang-Ping
XP
Nie
Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, China.
Kai-Bing
KB
Li
Consortium on Health, Environment, Education and Research (CHEER), and Department of Science and Environmental Studies, The Hong Kong Institute of Education, Tai Po, Hong Kong, China.
Wai-Ming
WM
Choi
Consortium on Health, Environment, Education and Research (CHEER), and Department of Science and Environmental Studies, The Hong Kong Institute of Education, Tai Po, Hong Kong, China.
Yu-Bon
YB
Man
Consortium on Health, Environment, Education and Research (CHEER), and Department of Science and Environmental Studies, The Hong Kong Institute of Education, Tai Po, Hong Kong, China. minghwong@ied.edu.hk.|School of Environment, Jinan University, Guangzhou, China. minghwong@ied.edu.hk.
Ming-Hung
MH
Wong
D000821:Animal Feed / Q000032:analysis*; D000818:Animals; D002347:Carps / Q000254:growth & development / Q000378:metabolism; D004032:Diet; D005398:Fisheries; D005506:Food Contamination / Q000032:analysis*; D006723:Hong Kong; D019216:Metals, Heavy / Q000032:analysis / Q000378:metabolism; D031782:Pennisetum / Q000737:chemistry*; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis / Q000378:metabolism; D059027:Recycling / Q000379:methods; D062611:Solid Waste / Q000032:analysis*
D019216:Metals, Heavy; D011084:Polycyclic Aromatic Hydrocarbons; D062611:Solid Waste
Fish feeds; Food waste; Napier grass; OCPs; PAHs