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Dairy productivity of brown swiss cows and the results of its implementation in the Smolensk region

https://doi.org/10.17238/issn2072-2419.2020.4.87

Abstract

One of the most important conditions for increasing milk production is to in-crease the genetic potential of animals and its implementation. Providing an increase in the level of profitability of production, the term of return on investment for organizations specializing in dairy production is reduced. Research results have shown that, despite a significant decrease in the number of brown Swiss cattle in the region, the breed has good prospects for further breeding. For this purpose, we studied the productive qualities of daughters of bulls from genealogical lines (complexes) of the brown Swiss breed, which have different degrees of realization of the genetic potentials of milk productivity in the Smolensk region. The genealogical structure of the breed, represented by ten lines, genealogical and related groups, is characterized by the realization of the genetic potential at the level of 83.8 - 115.7%. In the daughters of bulls of groups I, VII, VIII, X (11.0-32.0%), the realization of the potential of milk productivity has values above 120%, and in cows with a milk yield above 8000 kg of milk - from 120.0 to 178.5%. It should be noted that the higher the parent index of the cow (RIC), the lower the manifestation of genetic features, due to the increased influence of PHE-notypic factors. Cows of group IV-VII, having the average highest milk yield of 5292-5481 kg of milk, RIC 6080-6944 kg, realized their genetic potential by 83.8-91.5%. Using the method of one-factor analysis of variance, it was found that the greatest influence on the realization of the genetic potential of cows was exerted by the age in lactations and the bull-father. In further breeding work with the brown Swiss breed, to increase the productive qualities of animals, it may be recommend to use in breeding cows with a milk yield of 8000 kg and above, taking into account the selection of appropriate bulls for them.

About the Authors

A. S. Gerasimova
FSBRI «Federal Research Center for Bast Fiber Crops»
Russian Federation


O. V. Tatueva
FSBRI «Federal Research Center for Bast Fiber Crops»
Russian Federation


E. A. Prishchep
FSBRI «Federal Research Center for Bast Fiber Crops»
Russian Federation


D. V. Leutina
FSBRI «Federal Research Center for Bast Fiber Crops»
Russian Federation


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Review

For citations:


Gerasimova A.S., Tatueva O.V., Prishchep E.A., Leutina D.V. Dairy productivity of brown swiss cows and the results of its implementation in the Smolensk region. International Journal of Veterinary Medicine. 2020;(4):87-93. (In Russ.) https://doi.org/10.17238/issn2072-2419.2020.4.87

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ISSN 2072-2419 (Print)