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您的检索式：作者名="Yuepan Ren"
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| 1 | Nutritional value of domesticated duckweed variety DW2602 and its feeding effects on the growth performance and digestive activities of tilapia fingerlings显示文摘Duckweed are a family of fast-growing aquatic plants,in which wild plants of many species have been tested in animal feed.We domesticated a duckweed variety,Spirodela polyrhiza DW2602,which had 44.5%protein and 2.6% lysine and was grown on a large scale.The effects of DW2602 on the growth performance and the digestive enzyme activities of tilapia variety GIFT(Genetic Improvement of Farmed Tilapia,Oreochromis niloticus)fingerlings were evaluated.The dry powder of DW2602 was added to conventional tilapia feed at six inclusion levels of 0%,10%,15%,20%,25%,and 30%.The diets were fed to tilapia fingerlings with an initial weight of 2.0±0.15 g for 60 d.Results showed that DW2602 improved the growth performance and digestive enzyme activities significantly.The feeding effect was the best when the inclusion rate was 20%,in which the body weight increased to 37.24±1.21 g in 60 d,18.15%higher than the control(P<0.05).The weight gain rate,the specific growth rate,the condition factor,and the hepatosomatic index of the fish were all significantly higher than the control(P<0.05),and the amylase,protease,and lipase activities in the digestive system were all promoted by DW2602(P<0.05).Therefore,the duckweed variety DW2602 has great application prospect in tilapia culture. | Bingying Han Ting Chen Bohan Yu Yuepan Ren Yuhan Long Deguan Tan Lili Fu Jiaming Zhang | 2022 | Tropical Plants2022，1，1： | 0 |
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