Prospects for using alfalfa flour as part of feed for Australian red-claw crayfish (Cherax quadricarinatus)

The possibility of partial replacement fish meal with alfalfa flour in feeds for the Australian red-clawed crayfish (Cherax quadricarinatus) has been investigated. Crayfish were kept aquariums a volume 150 liters at temperature 24-26.5 °C. control group was fed granular feed intended sturgeon fish. In experimental feeds, partially replaced flour. An enzyme preparation, natuzyme, added to one options. duration experiment 45 days. Feeding carried out manually 2 times day morning and evening hours. introduced portions, monitoring digestibility. feeding rate 2-4% body weight. Morphometric, linear-weight biochemical parameters Cherax quadricarinatus hemocyte formula are analyzed. It found that growth on high low animal protein content occurred almost equally, which indicates good prospect using order reduce their cost by reducing amount meal. At same time, better assimilation plant components feed, it is recommended add complex preparation natuzyme feed. positive effect addition noted. Experimental provided sufficient total protein, lipids, glucose, phosphorus calcium hemolymph. A decrease urea found.