Assessment of Dietary Requirement of Vitamin E for Rohu, Labeo rohita Fingerlings Fed Practical Diet
Assessment of Dietary Requirement of Vitamin E for Rohu, Labeo rohita Fingerlings Fed Practical Diet
Uzma Zulfiqar1, Mahroze Fatima2, Syed Zakir Hussain Shah3*, Muhammad Afzal1, Shazia Shamas3, Sadia Roshan3, Moazama Batool4 and Muhammad Bilal5
ABSTRACT
An 8-weeks feeding experiment was performed to study the requirement of vitamin E for rohu fingerlings. Six practical diets were fed to fingerlings including one control diet (E0) and five test diets (E25, E50, E75, E100 and E125) supplemented with graded vitamin E levels including 0, 25, 50, 75, 100 and 125 mg/kg. After the completion of trial, fish growth, vitamin E, antioxidant enzymes activities and fatty acids profile was determined. From the results it was concluded that the graded supplemental vitamin E levels improve the utilization of feed and fish growth. The antioxidant enzymes activities also showed significant results by increasing vitamin E level in the diet. However, an inverse relation was recorded between the contents of liver thiobarbituric acid reactive substances (TBARS) and vitamin E level in the diet. Moreover, analysis of fatty acids profile showed decrease in saturated and monounsaturated fatty acids (MUFAs). While, polyunsaturated fatty acids (PUFAs) were increased in all vitamin E supplemented diets compared to control group. Furthermore, vitamin E level of 80.62 mg/kg was found optimum for maximum growth performance in L. rohita fingerlings, beyond which no increase in growth was observed.
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