Analysis of breeding and genetic indexes of the reproductive ability of sows of the Poltava Meaty breed with different variants of share of blood of the precocious meaty breed
https://doi.org/10.31043/2410-2733-2020-2-10-15
Abstract
In the article it is presented the data of a comparative analysis of indexes of reproductive capacity of the main sows of the Poltava Meaty breed with different variants of share of blood of precocious meaty breed: group I - 12,5%, group II - 25,0%, group III - 50,0%. The reliable influence of genetic factor such reproductive qualities of sows of the Poltava Meaty breed as: age of the first farrow, weight of one head at weaning, weight of a litter at weaning has been determined. The greatest influence is exerted by of blood shares on the age of the first farrow - 28,84% (p≤0,001). It was revealed that the studied signs: multiple births, weight of a litter at birth, weight of one head at weaning, weight of a litter at weaning are characterized by higher fluctuations of variability coefficients, which indicates on their greater degree of dependence on environmental conditions and technological conditions. It was found that the increase in the blood shares of the precocious meaty breed in sows of the Poltava Meaty breed does not lead to a reliable linear change in the indexes of reproductive qualities of animals. Sows of the Poltava Meaty breed with a blood shares of 12,5% and 50,0% for the precocious meat breed show more optimal and stable values of reproductive qualities for most of the studied indexes, characterized by greater consolidation and separation. The animals of these groups differed in the lowest age of the first farrow, not significantly different from each other. Animals with a blood share of 12,5% in these natural and technological conditions are more demanding to the feeding conditions and need to correct the feeding rate taking into account the physiological state. Animals with a 25,0% share of blood in the precocious meaty breed bear the greatest adaptive load to natural-climatic and technological conditions and may not fully realize their genetic potential in terms of reproductive qualities.
About the Authors
N. Garskaya
Lugansk National Agrarian University
Ukraine
Ukraine
PhD (Biol. Sci.)
91008, Lugansk-8, the town of LNAU, 1
L. Peretyatko
Institute of Pig Breeding and agroindustrial production of NAAS of Ukraine
Ukraine
Ukraine
PhD (Agr. Sci.)
36013, Poltava — 13, Shvedskaya Mogila Str., 1
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For citations:
Garskaya N., Peretyatko L. Analysis of breeding and genetic indexes of the reproductive ability of sows of the Poltava Meaty breed with different variants of share of blood of the precocious meaty breed. Genetics and breeding of animals. 2020;(2):10-15. (In Russ.) https://doi.org/10.31043/2410-2733-2020-2-10-15
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