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Growth Performance and Nutrient Digestibility of Cirrhinus mrigala Fingerlings Fed Phytase Supplemented Sunflower Meal Based Diet

Growth Performance and Nutrient Digestibility of Cirrhinus mrigala Fingerlings Fed Phytase Supplemented Sunflower Meal Based Diet

Syed Makhdoom Hussain1,*, Tasneem Hameed1, Muhammad Afzal2, Arshad Javid3, Nosheen Aslam4, Syed Zakir Hussain Shah6, Majid Hussain5, Muhammad Zubair ul Hassan Arsalan1 and Muhammad Mudassar Shahzad1

1Fish Nutrition Lab, Department of Zoology, Government College University, Faisalabad, Pakistan
2FishNutrition Lab, Department of Zoology, Wildlife and Fisheries, University of Agriculture, Faisalabad, Pakistan
3Department of Wildlife and Ecology, University of Veterinary and Animal Sciences, Lahore, Pakistan
4Department of Biochemistry, Government College University, Faisalabad, Pakistan
5Department of Zoology, University of Gujrat, Gujrat, Pakistan
6Department of Zoology, University of Sargodha, Sargodha, Pakistan

*      Corresponding author: drmakhdoom90@gmail.com

ABSTRACT

A feeding trial was conducted to study the effects of graded levels (0, 500, 1000, 1500 and 2000 FTU kg-1) of microbial phytase on growth performance and nutrient digestibilityof Cirrhinus mrigala fingerlings fed sunflower meal based diet. The chromic oxide was added as inert marker in the diets. Three replicate groups of 15 fish (Average weight 5.05±0.013 g fish-1) were fed at the rate of 5% of live wet weigh and feces were collected twice daily. The results of present study showed improved growth performance of Cirrhinus mrigala fingerlings in response to phytase supplementation. Maximum growth performance was observed by the fish group fed on test diet-III having 1000 FTU kg-1 level. Similarly, nutrient digestibility was also significantly increased (p<0.05) by 1000 FTU kg-1 level of phytase supplementation. Digestibility coefficients for sunflower meal based diet increased 15.76%, 17.70% and 12.70% for crude protein, crude fat and apparent gross energy as compared to the reference diet, respectively at 1000 FTU kg-1 level. It was concluded that the phytase supplementation to sunflower meal based diet at 1000 FTU kg-1 level is optimum to release adequate chelated nutrients for maximum growth performance of C. mrigala fingerlings. Our results also suggested that phytase supplementation to sunflower meal based diet can help in the development of sustainable aquaculture by reducing the feed cost and nutrient discharge through feces into the aquatic ecosystem.
 

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Pakistan Journal of Zoology (Associated Journals)

October

Vol. 49, Iss. 5, Pages 1547-1936

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