Researches on fish welfare assessment in Fundulea-Frunzareni farm, based on water quality and blood biochemical parameters.

Abstract

In order to exist, fish need an appropriate environment, which satisfy its biological necessities. The physical-chemical water conditions play an important role in aquatic organisms' evolution. In Fundulea-Frunzareni fish farm there were harvested water and blood samples. From water samples there were established the physical-chemical parameters as: pH, dissolved oxygen, ammonia, nitrates, nitrites, phosphates, residual chlorine, total ferrum, sulphates and detergents and from serum samples: blood urea nitrogen, creatinine, phosphorum, calcium, albumins, alanine transaminase, cholesterol, tryglicerids, glucose, lactate dehydrogenase. The samples, both water and blood serum, were processed in the Animal welfare discipline laboratory-Faculty of Veterinary Medicine Bucharest, using Nova 60 device for water samples and Vettest 8008 biochemistry analyzer for serum samples. Regarding water quality in Fundulea-Frunzareni fish farm it was found that water pH, dissolved oxygen, ammonia, nitrites, total ferrum and copper recorded values within the admitted limits for carp rearing. Phosphates exceeded the admitted limits provided for carp rearing by 1.5 times in the samples harvested from 3 m depth at the water supplying sector of the pond and by 4 times in rejection sector. Residual chlorine exceeded admitted limits by 6-13 times, depending on the sampling point and depth.