The Asian Journal of Animal Science

Tulsankar Smita Sadanand ¹, Sweta Pradha ¹, G. C. kund ², S. Nanda ³

Affiliations
1 P.G. Department of Aquaculture,College of Fisheries (OUAT) Rangailunda, Berhampur Orissa, IN
2 P.G. Department of Statistics,College of Fisheries (OUAT) Rangailunda, Berhampur Orissa, IN
3 P.G. Department of Aquaculture, College of Fisheries (OUAT) Rangailunda,Berhampur Orissa, IN

Abstract

The present investigation was carried out to assess the impact of substitution of fish meal with soybean meal in the diet at a rate of 25 per cent, 50 per cent, 75 per cent and 100 per cent to elucidate its impact on the growth and growth parameters of Nile tilapia. Five experimental diets were prepared utilizing fish meal, soybean meal and mustard oil cake following standard procedures for formulation of the feed. The experimental diet under the treatment (T0,T1, T2, T3 and T4) had an average crude protein percentage of ranging from 28.34 to 31.57 per cent. The gross energy (Kcal/100g) for the experimental diets under the treatment (T0,T1, T2, T3 and T4) was estimated to be 430.59, 460.64, 417.20, 416.22 and 422.5, respectively. Within 90 days of culture period, theNile tilapias fed with control diet with no replacement of fish meal with soybean meal attended an average final weight of 23.78±0.38g. The best growth ofNile tilapia was reported when fed with the control diet under the treatment (T0). Nile tilapia provided with the diet with 50 per cent replacement of fish meal with soybean meal (T2) attended an average weight of 22.16±0.66g from an initial average weight of 3.40±0.10g which was reported to be at par with the control diet followed by the diet where 25 per cent of the fish meal was replaced with soybean meal. Under the treatment (T3 andT4) where 75 per cent and 100 per cent of fish meal was replaced by soybean meal a retardation of growth ofNile tilapia was noticed. The analysis of variance revealed a significant difference (= 0.05) between the treatments and a highly significant difference was reported between the days of culture. The treatment (T2) was considered to be the best out of all other treatments with respect to different growth parameters next to the control diet.

Keywords

Nile Tilapia, Soybean Meal, Fish Meal, Specific Growth Rate

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Sweta Pradhan ¹, S. Nanda ¹, Tulsankar Smita Sadanand ¹, G. C. Kund ², D. Choudhury ², R. K. Rath ¹

Affiliations
1 P.G. Department of Aquaculture, College of Fisheries (O.U.A.T.), Rangailunda, Berhampur (Orissa), IN
2 College of Fisheries, Orissa University of Agriculture and Technology, Rangailunda, Berhampur (Orissa), IN

Abstract

A 120 days feeding trial was conducted in triplicate in the cement cistern to investigate the effect of mixed feeding statagies on growth performances of striped cat fish (Pangasianodon hypothalamus) and catla (Catla catla) under polyculture system. Both the species of uniform size and initial weight were stocked at a ratio of 60:40 (striped cat fish 60% and catla 40%) by adopting a total stocking density of 30,000 numbers of fingerlings per ha. Experimental diets were prepared containing varying levels of proteins from the plant source like soybean, sesame oil cake, mustard oil cake following the standard procedures for formulation of pelleted feed. The feed ingredients like mustard oil cake, sesame oil cake. soybean, de-oiled rice bran, corn flour, vegetable oil, vitamin and mineral premix were procured and utilized for the purpose. Five experimental diet were prepared as T₀ : Control diet with the mixture of mustard oil cake and de-oiled rice bran, Low protein diet (T₁) with 15 per cent crude protein, High protein diet (T₂) with 30 per cent crude protein, T₃ One day low protein and one day high protein on alternate day and (T₄) Two days low protein and two days high protein on consecutive manner. The feed was provided to the experimental animals at a rate of 4 per cent of their body weight daily. Among all the different treatments, striped cat fish and catla attended maximum average weight gain under the influence of one day low protein and one day high protein diet in alternate manner (T₃) followed by T₂ (with high protein diet) and T₁ (with low protein diet).The growth performances under the treatment (T₄) was considered to be least. The analysis of variance revealed a significant difference (α=0.05) between the treatments and a highly significant difference was reported between the days of culture irrespective of fish species. The treatment (T₃) was considered to be the best out of all other treatments in term of average weight gain (g), increment in length, minimum FCR and PER with higher specific growth rate.

Keywords

Striped Cat Fish, Catla, Growth Performance, Polyculture.

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