Pyridoxine and survival of tilapia (Sarotherodon mossambicus Peters)

Oyetayo, A.S. and Thornburn, C.C. and Matty, A.J. and Jackson, A. (1985) Pyridoxine and survival of tilapia (Sarotherodon mossambicus Peters). In: 4th Annual Conference of the Fisheries Society of Nigeria (FISON) , 26-29 November, 1985 , Port-Harcourt, Nigeria.

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Abstract

Pyridoxine requirements of tilapia (Sarotherodon mossambicus Peters) were studied in two separate experiments using casein-based diets. In Experiment 1, fish on pyridoxine supplemented diet (14.0mg/100g diet) showed no adverse symptoms and remained healthy while fish on a pyridoxine-free diet showed abnormal behaviour with high mortality. Graded dietary pyridoxine (0.13 to 3.52mg/100g diet) was used in Experiment 2. Lower dietary supplementations of pyridoxine resulted in reduced weight increase, high mortality, high ratio of serum glutamate-oxal-acetate transaminase glutamate-pyruvate transaminase, and reduced blood sugar. The results suggest the dietary requirement of pyridoxine may be between 0.5g and 1.17mg/100g diet; higher supplementations did not appear to confer any further benefits

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