| Autor: |
ШИШМАН, Г. Ф., БЕХ, В. В., МАРЦЕНЮК, В. П., МАРЦЕНЮК, Н. О., ПЛІЩ, Ю. О. |
| Zdroj: |
Scientific Journal 'Animal Science & Food Technologies'; 2019, Vol. 10 Issue 3, p74-79, 6p |
| Abstrakt: |
At the current stage of research on combining ability of displaying the heterosis effect has been a comprehensive estimated. One-summer-old common carp crosses from crossing of the Nyvkivskiy Scale and Scaleless intrabred types (♀NSCx♂SLC) was used. The general control method has been used for control and checking of the farming results. During conducting experiments on comparative evaluation of common carp of different origins, it is especially important to minimize the displaying of phenotypic variability, because there are no perfectly identical growing ponds at fish farms. Therefore, in our work, the method of general control was used to evaluate the productive qualities of one-summer-old fish groups. Fish productivity is the main indicator and it is advisable to evaluate the results of fish cultivation. In this case the estimation was carried out with using the index of the corrected fish productivity (i.e. without taking into account the fish productivity obtained from the Nivkovsky Scaleless common carp). It was found that crossing groups performed beer than actual - 510.0 kg / ha and adjusted - 471.8 kg / ha yield. With what combining ability for heterosis was 4,4 %. In addition, the crossing groups ♀LSC × ♂NSК showed the best in both actual - 51.2 % and adjusted - 50.2 % surviving rate, while the heterosis combining ability was 3.8 %. The average mass of this one-summer-old fish, which affects together with faening at the survival rate of fish during wintering, was the best in crossing common carp ♀LSC × ♂NSК - 49.8 g, and the corrected average mass in this group was 47.0 g and the heterosis index was at 0.6%. The obtained results will be promising for further evaluation of heterosis and will help to improve the fish productivity of water bodies. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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