EFFECT OF REPALCEMENT OF FISH MEAL BY POTATO PROTEIN CONCENTRATE IN THE DIET FOR RAINBOW TROUT ON FEEDING RATE, DIGESTIBILITY AND GROWTH

XIE Shouqi; Alfred Jokumsen

Volume 23 Issue 2

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ACTA HYDROBIOLOGICA SINICA > 1999 > 23(2): 127-133.

XIE Shouqi, Alfred Jokumsen. EFFECT OF REPALCEMENT OF FISH MEAL BY POTATO PROTEIN CONCENTRATE IN THE DIET FOR RAINBOW TROUT ON FEEDING RATE, DIGESTIBILITY AND GROWTH[J]. ACTA HYDROBIOLOGICA SINICA, 1999, 23(2): 127-133.

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EFFECT OF REPALCEMENT OF FISH MEAL BY POTATO PROTEIN CONCENTRATE IN THE DIET FOR RAINBOW TROUT ON FEEDING RATE, DIGESTIBILITY AND GROWTH

XIE Shouqi¹,
Alfred Jokumsen²

Institute of Hydrobiology, The Chinese Academy of Sciences, Wuhan, 430072;
2. Danish Institute for Fisheries Technology and Aquaculture, North Sea Center, Hirtshals, Denmark

Received Date: September 02, 1997
Rev Recd Date: October 29, 1998
Published Date: March 24, 1999

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Six isonitrogenous and isoenergetic diets were composed to investigate the effects of incorporation of potato protein concentrate (PPC) and supplementation of methionine in the diet for rainbow trout (Oncorhynchus mykiss) on feeding rate,digestion, growth, feed utilization and body composition. The control diet contained all Danish L T-fish meal as protein sources. The other experimental diets contained 2.2, 5.6, 8.9 and 11.1% PPC respectively. Diet 6 contained 5.6% PPC and 1.7% methionine. A 4-week trial was conducted at about 12t. The results showed that feeding rate decreased with increased incorporation levels of PPC. Apparent digestibility of dry matter, crude protein and ash increased with increased proportion of dietary PPC, while there was no significant effect on the apparent digestibility of crude fat. The incorporation of 5.6% PPC decreased growth rate and 8.9% PPC decreased both growth and feed efficiency. Supplementation of 1.7% methionine decreased both feeding rate and growth.
- Oncorhynchus mykiss,
- Potato protein concentrate,
- Replacement,
- Fish meal

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[8]	Jia L, He X, Yang Y. Evaluation of partial replacement of fish meal and soybean meal cake by alfalfa, Trifolium sp., in practical diets for Chinese blunt snout bream, Megalobrama amblycephala, fingerlings. In: Finfish Nutrition Research in Asia. Proceedings of the Fourth Asian Fish Nutrition Workshop, edited by S S De Silva, 1991, pp. 119-123. 1991
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EFFECT OF REPALCEMENT OF FISH MEAL BY POTATO PROTEIN CONCENTRATE IN THE DIET FOR RAINBOW TROUT ON FEEDING RATE, DIGESTIBILITY AND GROWTH

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