Comparative investigation of some blood indices of scaly and mirror carps reared on natural feeding. I. First summer of life | Сравнително проучване на някои кръвни показатели на люспести и огледални шарани, отглеждани при естествено хранене. I. Първото лято на живота
2012
Ivanova, R., Agricultural University, Plovdiv (Bulgaria) | Nikolova, L., Institute of Fisheries and Aquaculture, Plovdiv (Bulgaria) | Khristev, Kh., Agricultural University, Plovdiv (Bulgaria)
The investigation was carried out on the experimental site of the Institute of Fisheries and Aquaculture – Plovdiv and at the Biochemical Laboratory of the Department of Animal Sciences with the Agricultural University – Plovdiv. Two variants of mixed monoculture were studied: First variant – K1 – 500 pcs.ha-1; K0 – 15000 pcs.ha-1; Second variant K1 – 500 pcs.ha-1, K0 – 30000 pcs.ha-1. No forages were added to the ponds. Before the period of vegetation the ponds were fertilized with cattle manure. Group blood samples were collected from fishes of different scale patterns after catching them, for testing the hemoglobin, blood glucose and total protein levels. Biochemical blood tests of carp showed that in the first summer of life, when fed on natural food under the conditions of monoculture, the levels of hemoglobin and blood glucose were within the optimal limits for the category, while the protein concentrations in blood were lower than the values cited in literature.
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