The impact of Vitaton on the rearing parameters and meat quality of sturgeon hybrids
2005
Kolman, R. (Inland Fisheries Institute, Olsztyn (Poland). Dept. of Ichthyology), E-mail: [email protected] | Szczepkowski, M. (Inland Fisheries Institute, Olsztyn (Poland). Dept. of Lake Fisheries) | Jankowska, B. | Kwiatkowska, A. (University of Warmia and Mazury, Olsztyn (Poland). Dept. of Meat Technology and Chemistry) | Sidorov, N. (Institute of Fisheries, Kiev (Ukraine))
The impact of the feed supplement Vitaton, a preparation containing beta-carotene, on the growth rate, feed utilization, and meat quality of reciprocal back cross hybrids of Siberian sturgeon, Acipenser baerii Brandt x green sturgeon, Acipenser medirostris Ayres, (SSZ group) and Siberian sturgeon x Russian sturgeon, Acipenser gueldenstaedti Brandt, (SRS group) was determined. It was confirmed that beta-carotene results in a statistically significant increase in growth rate of about 20 percent and a decrease in the value of the feed conversion ratio (FCR) by 9.6 percent in the fish from the SSZ group. Statistically significant differences between the Vitaton and control subgroups in the SRS group occurred only with regard to the FCR at values of 1.64 +- 0.08 and 1.71 +- 0.09, respectively. The results of meat quality tests indicated that under the influence of Vitaton there was a statistically significant increase in the fat content to 13.21 +- 1.04 percent in comparison with the control group values of 9.57 +- 2.33 percent and a decrease in the water content from 72.73 +- 1.57 percent to 68.82 +- 1.28 percent in the fish from the SRS group. No significant impact of beta-carotene was noted in the studied fish with regard to meat colour
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