Phenotypical manifestation, variability and heritability of fertility traits in pigs, 2: pregnancy duration
2001
Trivunovic, S. | Teodorovic, M. | Petrovic, M. | Radovic, I. | Popov, R.
The aim of this research was to investigate the phenotypic expression, variability and heritability of pregnancy duration. The overall mean value of pregnancy duration was 115.57 days and varied between farms (P is less than 0.01), genotypes (P is less than 0.01), parieties (P is less than 0.01) and years (P is less than 0.01). Heritability coefficients for pregnancy duration varied between farms from 0.271 to 0.511.
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