REPRODUCTIVE CAPACITY OF DANISH SELECTION SOWS IN UKRAINIAN CONDITIONS
DOI:
https://doi.org/10.37000/abbsl.2025.114.09Keywords:
pig breeding, reproductive traits, dams, Danish selection, Large White, LandraceAbstract
The assessment and the analysis of the reproductive ability of Danish selection sows under different combinations in local geoclimatic and epizootic conditions of Ukraine was carried out. At the facilities of the “Genetic Invest” LLC farm, four groups of sows of the Large White and Landrace breeds of Danish selection, each with 15 heads, were formed using the analogue group method in accordance with the scheme. The first and third groups included purebred sows of the Large White breed of Danish selection (Y), and the second and fourth groups included their purebred analogues of the Landrace breed (L). Sows of groups I and IV were inseminated with sperm of boars of the Large White breed (Y) of the same selection. Their analogues from groups II and III were inseminated with sperm of boars of the Landrace breed (L) also of Danish selection. The following productivity indexes were taken into account in sows: duration of gestation, days; total number of piglets born; multiparity (number of live piglets at birth); mass of piglets' litter and their individual mass at birth; number; individual mass and mass of piglets' litter at weaning at 28 days; survival of piglets to weaning. Also, when piglets were born in litters, the total number of stillborn, mummies, and weak piglets born was taken into account per litter.
As a result of studying the reproductive ability of Danish breeding sows in different combinations in local geoclimatic and epizootic conditions of Ukraine, it was determined that there is a high level of animal productivity according to the main characteristics.
In bi-breed reciprocal combinations and purebred breeding of the Large White and Landrace breeds of Danish selection, it was found that the duration of gestation in sows is 117.48-118.87 days, which is on 3.47-4.87 days longer than traditionally accepted, which should be taken into account in further work with these breeds at the level of different farms.
It was found the fact that the combination of sows of the Large White breed with Landrace boars had the highest values of such indexes as the total number of piglets born (p<0.05), multiparity (p<0.01), and the number of piglets at weaning (p<0.01), which indicates the effectiveness of using this combination in Ukrainian conditions to ensure the maximum level of productivity in terms of the reproductive ability of Danish selection sows in bi-breed combinations.
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