Variations in Antioxidant Enzyme Profile and Growth Parameters of Oreochromis niloticus under 20% Fishmeal Replacement with Housefly Maggot Meal in Feed

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Arooba Naseer and Usman

Fish Nutrition Lab, Department of Zoology Wildlife and Fisheries, University of Agriculture, Faisalabad

: Expert Opin Environ Biol

Abstract

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Fish meal is an expensive source of protein in the aquaculture industry. Housefly maggot meal was used as a suitable alternative to the fish meal. A study was conducted for the replacement of 20% fishmeal with maggot meal in the diets of Nile tilapia at the Department of Zoology, Wildlife, and Fisheries, UAF, Faisalabad. Two glass aquaria were used: control (T0) and experimental (T1), each carrying 10 fingerlings of tilapia. In T0, 100% fishmeal-containing diets were given to the fingerlings at a rate of 6% of their body weight. T1 was fed at the same rate, with 20% fishmeal replaced with Musca domestica magmeal in diets. Temperature, DO, and pH were checked weekly. The fish in T1 showed more weight gain and length gain as compared to the control group. The final average weight for T0 was recorded as 21.74 g, and for T1, it was recorded as 24.3g. The final average length was measured as 19.9cm for T0 and 22.7cm for T1. The FCR was non-significant for T0 and T2, whereas the SGR values of both groups showed a significant difference. Samples were taken to analyze the antioxidant enzyme profile in the gills and liver of tilapia at the end. Non- Significant results were observed when the values of SOD and CAT were compared in both T0 and T1. The values of SOD for T0 were obtained as 159.1 U/mg in the liver and 137.1 U/mg in the gills, and for T1 they were 159.7 U/mg in the liver and 137.2 U/mg in the gills. The catalase activity was measured as 56.0 U/ mg in the liver and 16.2 U/mg in the gills of T0 and 56.6 U/mg in the liver or 16.1 U/mg in the gills of T1. Overall, 20% fishmeal replaced with housefly magmeal resulted in improved growth without any negative impact on the growth, and non-significant differences were observed in the antioxidant profile. Keywords: Feed Conversion Ratio (FCR), Specific Growth Rate (SGR), Superoxidase Dismutase (SOD), Catalase Enzymes (CAT), Dissolve Oxygen (DO)

Biography

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Arooba Naseer is a zoologist and has an M.Phil. in Zoology, Wildlife, and Fisheries from the University of Agriculture, Faisalabad. She was a member of the research team in the Fish Nutrition Lab, Department of Zoology, Wildlife, and Fisheries, and is currently working as a teacher and researcher. Usman is a Zoologist and has an M.Phil. Degree in Zoology, Wildlife, and Fisheries from the University of Agriculture, Faisalabad. He was a member of the research team in the Fish Nutrition Lab, Department of Zoology, Wildlife, and Fisheries.