Optimum dietary protein requirement of a Malaysian freshwater catfish, Mystus nemurus
Six isoenergetic pratical diets ranging from 27% to 50% protein were fed for 12 weeks to triplicate groups of the freshwater catfish Mystus nemurus (25.4±0.89 g body weight and 12.80±0.4 cm total length). The fish were cultured in a recycling water system maintained at ambient environmental temperat...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier Science Publishers
1993
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| Online Access: | http://psasir.upm.edu.my/id/eprint/114403/1/114403.pdf |
| _version_ | 1824452401935941632 |
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| author | Khan, M.S. Ang, K.J. Ambak, M.A. Saad, C.R. |
| author_facet | Khan, M.S. Ang, K.J. Ambak, M.A. Saad, C.R. |
| author_sort | Khan, M.S. |
| collection | UPM |
| description | Six isoenergetic pratical diets ranging from 27% to 50% protein were fed for 12 weeks to triplicate groups of the freshwater catfish Mystus nemurus (25.4±0.89 g body weight and 12.80±0.4 cm total length). The fish were cultured in a recycling water system maintained at ambient environmental temperature. Weight gain was directly proportional to protein levels up to an incorporation rate of 42%; beyond this level no significant growth (P>0.05) either in weight gain or protein gain was observed. Protein efficiency ratio (PER) decreased with increasing protein level. Apparent net protein utilization (ANPU) parabolically increased with increasing dietary protein level but decreased when dietary protein level exceeded 42%. Carcass fat and protein content were negatively correlated while ash content was not affected by varying dietary protein levels. Weight gain, food conversion ratio (FCR), PER and ANPU indicated that a 42% protein diet with digestible protein to energy ratio ( DP E) of 113.82 mg/kcal produced maximum growth under the experimental conditions used. |
| first_indexed | 2025-02-19T02:49:57Z |
| format | Article |
| id | upm.eprints-114403 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2025-02-19T02:49:57Z |
| publishDate | 1993 |
| publisher | Elsevier Science Publishers |
| record_format | dspace |
| spelling | upm.eprints-1144032025-02-05T03:47:39Z http://psasir.upm.edu.my/id/eprint/114403/ Optimum dietary protein requirement of a Malaysian freshwater catfish, Mystus nemurus Khan, M.S. Ang, K.J. Ambak, M.A. Saad, C.R. Six isoenergetic pratical diets ranging from 27% to 50% protein were fed for 12 weeks to triplicate groups of the freshwater catfish Mystus nemurus (25.4±0.89 g body weight and 12.80±0.4 cm total length). The fish were cultured in a recycling water system maintained at ambient environmental temperature. Weight gain was directly proportional to protein levels up to an incorporation rate of 42%; beyond this level no significant growth (P>0.05) either in weight gain or protein gain was observed. Protein efficiency ratio (PER) decreased with increasing protein level. Apparent net protein utilization (ANPU) parabolically increased with increasing dietary protein level but decreased when dietary protein level exceeded 42%. Carcass fat and protein content were negatively correlated while ash content was not affected by varying dietary protein levels. Weight gain, food conversion ratio (FCR), PER and ANPU indicated that a 42% protein diet with digestible protein to energy ratio ( DP E) of 113.82 mg/kcal produced maximum growth under the experimental conditions used. Elsevier Science Publishers 1993 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/114403/1/114403.pdf Khan, M.S. and Ang, K.J. and Ambak, M.A. and Saad, C.R. (1993) Optimum dietary protein requirement of a Malaysian freshwater catfish, Mystus nemurus. Aquaculture, 112 (2-3). pp. 227-235. ISSN 0044-8486; eISSN: 0044-8486 https://linkinghub.elsevier.com/retrieve/pii/0044848693904488 10.1016/0044-8486(93)90448-8 |
| spellingShingle | Khan, M.S. Ang, K.J. Ambak, M.A. Saad, C.R. Optimum dietary protein requirement of a Malaysian freshwater catfish, Mystus nemurus |
| title | Optimum dietary protein requirement of a Malaysian freshwater catfish, Mystus nemurus |
| title_full | Optimum dietary protein requirement of a Malaysian freshwater catfish, Mystus nemurus |
| title_fullStr | Optimum dietary protein requirement of a Malaysian freshwater catfish, Mystus nemurus |
| title_full_unstemmed | Optimum dietary protein requirement of a Malaysian freshwater catfish, Mystus nemurus |
| title_short | Optimum dietary protein requirement of a Malaysian freshwater catfish, Mystus nemurus |
| title_sort | optimum dietary protein requirement of a malaysian freshwater catfish mystus nemurus |
| url | http://psasir.upm.edu.my/id/eprint/114403/1/114403.pdf |
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