Efficacy of acidified phytase supplemented cottonseed meal based diets on growth performance and proximate composition of Labeo rohita fingerlings

Abstract

The growth of aquaculture sector is strongly dependent upon the continuous supply of inexpensive fish feed with balanced nutritional profile. However, fish meal (FM) is unable to satisfy this demand due to its scarce supply and high cost. In order to test the potential of cottonseed meal (CSM) as a fish meal replacer, a feeding trial of 12 weeks was conducted to check growth performance and proximate composition of Labeo rohita fingerlings. The protein ration of the test feed was satisfied by replacing FM with CSM at 0, 25, 50 and 75%. Sixteen test diets viz., TD1 (control), TD2, TD3, TD4, TD5, TD6, TD7, TD8, TD9, TD10, TD11, TD12, TD13, TD14, TD15 and TD16 were supplemented with citric acid (CA; 0 and 2.5%) and phytase (PHY; 0 and 750 FTU/kg) in a completely randomized design with 3×3 factorial arrangement. The highest weight gain (11.03g), weight gain% (249.21%), specific growth rate (1.39) and best feed conversion ratio (1.20) were recorded by fish fed with TD12. Furthermore, the same level increased the crude protein (59.26%) and fat (16.04%) being significantly different (p<0.05) than that of control. Conclusively, the addition of acidified phytase (CA; 2.5%, PHY; 750 FTU/kg) in TD12 (CSM=50%) led to the improved growth and proximate composition of L. rohita fingerlings.

Synergistic Effects of Citric Acid and Phytase Supplemented Canola Meal Based Diet on Growth Performance and Nutrient Digestibility of Cyprinus Carpio Fingerlings

“…The results of mean weight gain revealed that all formulated diets were nutritionally adequate. Studies of Arsalan et al (2021) and Ahmad et al (2021) with C. mrigala and L. rohita fingerlings, respectively revealed the similar results of improved growth performance when 50% FM was replaced with CM and cottonseed meal, respectively, and supplemented with 2.5% CA and 750 FTU kg -1 level of PHY. This replacement level of fish meal by plant meals along with CA and PHY supplementation proved beneficial in improving morphometric parameters of fish.…”

Elemental composition of Talang Queenfish (Scomberoides commersonnianus Lacépède, 1801) in relation to body size and condition factor from Pakistan

“…Some fish absorb much from food, and the harmful substances become a part of their bodies as a result of their excessive consumption (Eisler, 1987). Concentration of hazardous heavy metal components in freshwater fish in Pakistan suggest that rapid mechanical and agricultural improvement in the past has posed significant threats to the country's water resources (Ahmad et al, 2021).…”