Abstract:
The paper presents the results of a study of long-term adaptation, management value and productivity of Large White
sows of Hungarian origin in the conditions of steppe zone of Ukraine. It was found that Large White sows of Hungarian
origin are characterized by high rates of long-term adaptation, management value and reproductive qualities. Thus,
their age of life is 44.1 ± 1.97 months (Cv = 35.27%); the duration of breeding use is 32.8 ± 1.95 months (Cv =
46.91%); the index "level of adaptation" varies in the range from 5.48 to 27.20 points. Taking into account the intrabreed
differentiation according to the index "level of adaptation", a significant difference between the groups of sows of
class M + and M- was found according to the following indicators: "farrowing received", "live piglets in total, heads",
"multifetation, heads", "nest weight during the weaning at the age of 28 days, kg". The indicator "livability of piglets
before weaning at the age of 28-32 days, %" in the experimental groups of sows ranges from 90.1 to 94.4%. Sows from
the category "high management value" exceeded peers from the category "low management value" in terms of
"farrowing received", "live piglets in total, heads", "multifetation, heads", "nest weight during the weaning at the age of
28-32 days, kg" by 46.67% on average. The indicator "livability of piglets before weaning at the age of 28-32 days, %"
in different management value groups of sows ranges from 91.3 to 100.0%. The maximum increase in additional
products was obtained from sows which index "level of adaptation" ranges from 5.48 to 8.20 points (+4.99%), as well
as from animals of the category "high management value" (+3.41 %), respectively. These indicators are proposed to be
used as criteria for selection of highly productive animals in the controlled population.
