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Prolificacy of old genotype Lithuanian white sows in small closed population

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Author(s): Razmaite Violeta | Jatkauskiene Virginija | Juozaitiene Vida

Journal: Acta Veterinaria
ISSN 0567-8315

Volume: 62;
Issue: 4;
Start page: 355;
Date: 2012;
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Keywords: generation | litter traits | parity | pigs

ABSTRACT
The objective of this study was to examine the influence of generation, parity number and year on sow prolificacy in the nucleus herd of the closed population of old genotype Lithuanian White pigs. Data on farrowing and litter size (total born, born alive, including sex of piglets, stillborn) were available per parities for individual sows from 2000 to 2011. The piglets originated from 395 litters (104 dams and 28 sires) of five generations. The generation showed effects on the number of total born piglets, piglets born alive, including males (p
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