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
Journal Title
Journal ISSN
Volume Title
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.
Description
Keywords
Replacement of fish meal with processed poultry offal meal , soybean meal in the diets of snakehead, Channa striata