Replacement Of Fish Meal With Processed Poultry Offal Meal And Soybean Meal In The Diets Of Snakehead, Channa Striata (Bloch, 1793) Juvenile

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Date
2017-07
Authors
Mustapar, Nurul Nadiah
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Publisher
Universiti Sains Malaysia
Abstract
This study was conducted to evaluate the feasibility of lab processed poultry offal meal (P-POM) and soybean meal (SBM) alone and a lab processed and soybean meal combination as a replacement for fish meal (FM) to promote growth and survival in snakehead, Channa striata juveniles. A series of three experiments were conducted, firstly, the replacement of fish meal with lab processed poultry offal meal, secondly, replacement of fish meal with soybean meal and followed by a combination between lab processed poultry offal meal and soybean meal in a fish meal based diet for snakehead juveniles. In the first and second study, fish (mean initial weight, 13 g) were reared in 30 fiberglass tanks (500l) and fed with ten isonitrogenous (40% crude protein) and isocaloric (18.90kJ/g gross energy) diets in triplicates. The test diets were control (no replacement), 25%, 50%, 75% and 100% replacement with either P-POM or SBM, respectively. Fish were fed with the test diets twice daily until apparent satiation for 12 weeks. Results show no significant difference (P>0.05) in fish survival but growth performance and feed utilization showed an increasing trend with increasing of P-POM replacement. Fish fed with 75PPOM diet was significantly higher in terms of weight gain, SGR and PER compared to all other treatments while FCR in fish fed 75% P-POM (75PPOM) replacement was significantly lower (P<0.05) compared to other treatments. The HSI and VSI value were also found to be the highest in fish fed with 75PPOM. In addition, the digestive enzyme activities of protease, lipase and amylase showed an increasing trend with the replacement of PPOM in the diets. The results from this feeding trial indicate that P-POM protein can replace up to 75% FM protein in the diet for snakehead juveniles without affecting the survival, growth performance and feed utilization.
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Keywords
Replacement of fish meal with processed poultry offal meal , soybean meal in the diets of snakehead, Channa striata
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