Assessment of morphophysiological indicators of sturgeon breeders

Abstract

Studies were conducted to assess the morphophysiological indicators of sturgeon breeders in the conditions of the cage complex. It was found that a common feature for first–time mature beluga females raised in artificial conditions are relatively low values of eggs’ fertilization — 65,3±1,3%, with the number of eggs in 1 g — 46,0 pieces, in contrast to domesticated females where the indicators of eggs’ fertilization were higher by 27,1%. The yield of eggs from the body weight of domesticated beluga females was 2 times higher, unlike females raised on the principle of “from eggs to eggs”. It was noted that for beluga females raised in artificial conditions, the hemoglobin concentration values were 15,7% higher, in contrast to the indicators obtained from domesticated females. It was found that for beluga females raised in artificial conditions, the total protein indicators were 1,4 times higher. For domesticated Russian sturgeon females, there is a tendency for higher indicators of working fertility, for which significant differences were obtained (p < 0.05). In Russian sturgeon females raised in industrial conditions, hemoglobin concentration indicators were higher by 14,5%, unlike adapted females, as a result, a similar trend is observed as with beluga females, it was found that for more productive fish, hemoglobin is lower, but within the reference values. The cholesterol level in the blood of domesticated and industrially raised Russian sturgeon females was slightly higher than the physiological norm. According to the statistical processing of the data obtained, the best indicators of total protein and glucose were noted for females raised in artificial conditions, however, these indicators of domesticated females were not critically low and were within the reference values.