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Registration Number

0219U000615, 0116U002145 , R & D reports

Title

Streamline methods of breeding fur animals of different species in the conditions fur farms Ukraine

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Head

Gonchar Oleksiy,

Registration Date

11-02-2019

Organization

Cherkassy experimental station furs animals breeding and hunting of Cherkassy institute of agroindustrial production

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Based on the analysis performed, it was established that the basis of the population of fur-bearing animals is still the American mink, whose share is 94.6% of the total number of animals raised for the production of fur raw materials. The share of other types of fur animals is insignificant and ranges from 0.2-4%. The livestock of fur animals in farms of various forms of ownership at the end of 2015 amounted to: minks - 146,000 heads, foxes - 1,215 heads, arctic fox - 700 heads, nutria - 6125 heads and other animal species - 315 heads. The reproducing ability of fur-bearing animals is fluctuating and during the period of research it was: for minks 4.56-5.23 goals., for blue fox - 6.12-8.20 goals., for silver-black fox 4.9-5, 32 goals., for nutria - 7.12-8.14 goals. Various indicators of the dynamics of live weight of young fur animals in the period 2010-2015 have been established. The maximum growth rate of young American mink had in 2012, the average body weight of which at the age of 6 months was 2.57 kg, which is 0.2 kg higher than the same indicator in 2011. For foxes of 6 months of age, the studied indicator in 2014 was 5.85 kg, which is 250 g higher than the similar value in 2015. A similar situation was also observed in young foxes, in which in the study group the prevalence in 2014 was 5.4 kg. The presence of a correlation relationship between the level of feeding, macroclimatic factors, the influence of the technological parameters of the rut on the performance of fur-bearing animals in the conditions of modern animal farming has been established. It was established that, regardless of the breeding method, the realization of the potential is rather high for all breeding characteristics, 89-98%. Moreover, the maximum studied index turned out to be for such selective signs as body size. For minks obtained by introducing crossing, the level of realization of the genetic potential for this trait was 97.9 against 98.6% of the animal populations obtained by pure breeding. For the indicator of reproductive ability, the degree of realization of genetic potential had low values, since this indicator has a high proportion of the influence of the paratypical component, which is represented by macroclimatic conditions, the level of feeding and the technique of animal breeding. Therefore, the level of implementation of the breeding genetic potential of reproductive ability was in the range of 85-87%. The use of the BLUP-method for estimating the breeding value of male producers allows for a ranking of producers by breeding and genetic characteristics, and for selecting animals to improve the established population. The breeding value index allows you to select for further reproduction of producers with the maximum estimate of breeding value. The use of the proposed producer assessment model allows a population of fur-bearing animals created by breeding and genetic indicators. The structure of the populations of the species studied are: for minks obtained by crossing - 168 lines and 640 families, for minks obtained by purebred breeding - 132 lines and 530 families, for arctic foxes - 38 lines of 120 families, and for fox - 25 lines of 110 families. The use of the BLUP-method for estimating the breeding value of male producers allows for a ranking of producers by breeding and genetic characteristics, and for selecting animals to improve the established population. The breeding value index allows you to select animals for further reproduction with a maximum value estimate. This indicator for the studied populations was 139-149 points and had a distribution close to normal. Using the selection of pairs for reproduction, taking into account the calculated breeding indices, allows you to get the livestock of animals with a high level of phenotypic consolidation for a complex of characters - 70-80%

Product Description

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Гавриш Олександр Миколайович
Яремич Наталія Володимирівна

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2020-04-02