Abstract
Phytate is not hydrolyzed by fish because natural phytase activity not present in some agastric fishes, phytate is present in grain products as the main form of phosphorus. The present study was aimed to check the effect of phytase supplementation on muscle proximate composition in Labeo rohita fingerlings that are fed by phytase supplemented distiller’s dried grain with soluble. Six experimental diets were prepared by supplementing phytase at graded levels. D1 diet contains no supplemented phytase, while, D2, D3, D4, D5 contain 250, 500, 750, 1000, and 1250 FTU/kg phytase, respectively. The experiment continues for eight weeks. Water quality parameters including pH, temperature, and dissolved oxygen were controlled throughout the experiment. Results were analyzed through the Student-Newman-Keuls test for significant differences. Supplementation of phytase decreased the moisture and fat content of muscles in L. rohita fingerlings. Supplementation of phytase increases the crude protein and crude ash content of muscles in L. rohita fingerlings. In conclusion, phytase showed randomized responses to muscle composition.
Highlights
The aquaculture sector is developing more efficiently than other foodproducing industries (Yildirimet al., 2014)
The effect of graded levels of phytase supplementation on the moisture contents in the muscles of Labeorohita fingerlings is given in table 3.1
We experiment on Labeorohita fingerlings which are fed on phytase supplemented dried grains with solubles (DDGS) based diet
Summary
The aquaculture sector is developing more efficiently than other foodproducing industries (Yildirimet al., 2014). The development of this industry is limited due to economic factors such as feed’s cost (Yildirimet al., 2014). To improve the production of fish the most important feed is supplemental feed. In semi-intensive culture, artificial feed plays a major role in which a greater number of fish is needed whose natural fecundity of the water can tolerate. The entire demand for fish nutrition relies on the food that’s why the importance and function of supplemented feed in intensive fish culture could not be neglected. A by-product of the ethanol distillery industry is Distiller’s dried grains with solubles (DDGS), is less expensive on a per-unit protein basis than soybean meal. For aquaculture business, DDGS is an economical alternative of fishmeal and other plant-based proteins
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