Agrarian
Bulletin
of the Urals

Russian Journal of Agricultural Research

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ISSN 2307-0005 (Online)
Key title: Agrarnyj vestnik Urala (Online)
Abbreviated key title: Agrar. vestn. Urala (Online)

Аграрный вестник Урала № 12 (130) 2014

Животноводство

Донник И. М. доктор биологических наук, профессор, академик Россельхозакадемии, ректор Уральский государственный аграрный университет

Есавкин Ю. И. доктор сельскохозяйственных наук Московская сельскохозяйственная академия имени К. А. Тимирязева

Власов В. А. доктор сельскохозяйственных наук, профессор Московская сельскохозяйственная академия имени К. А. Тимирязева

Маслобойщикова В. В. аспирант Московская сельскохозяйственная академия имени К. А. Тимирязева

УДК:639.37:597,552.512

A QUANTITATIVE DEPENDENCE OF THE BIOLOGICAL FEATURES OF FEMALE RAINBOW TROUTS FROM FISH WEIGHT

The paper presents the results of the research on the variability of the main selection features of the females of various forms of trouts. A quantitative dependence of the exterior, morphological and physiological indicators of female rainbow, golden, same-sex groups, and the mass of fish was determined. As a result of the research, it was found that length-mass regression coefficient for female rainbow trout with the length of 49.3–76 cm and weight 1770–7220 g was equal to 3.139. A similar value of this parameter (3.065) was obtained for female golden trout with the length of 48–71 cm and a weight of 1650–6100. A rela- tionship between the size and weight of fish groups was studied. It was found a golden trout pattern predominance compactness following dimensions — length of the body, carcass, head and maximum height. It was found that the regression coefficients of weight from interior signs in the studied groups was 1.17 except for the kidney in female golden trout that was less than 1.0, an increase in weight of fish was faster than increase in weight of organs. With the increase of the total mass the mass of the gas- trointestinal tract and internal fat increased faster in female same-sex trouts as compared with females of rainbow and golden trouts. Differences depending on the weight of the mass of the fish liver and gonads are caused by different length of maturing of female rainbow trout and gold trout during the spawning period. The female rainbow trouts mature 1–2 months earlier. It has been established that with an increase in mass of fish from 1000 to 6400 g the amount of muscle of rainbow trout was reduced, while the amount of muscle of the golden trout was stable, and in same-sex groups increased slightly. Thus, revealed features of a quantitative relationship of live weight of females from the exterior, interior and morphological features should be taken into account in the selection work.

Keywords:

rainbow, golden trout, “all family”, selection, allometry, exterior, interior, morphology, product quality


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