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  • Title: Prevention of reproductive disorders in sows.
    Author: Perestrelo R, Perestrelo H, Madec F, Tillon JP.
    Journal: Vet Res; 1994; 25(2-3):266-70. PubMed ID: 8038798.
    Abstract:
    Data collection related to production performances and health parameters was developed in 31 intensive pig farms in Portugal (from 100-800 sows each) in 1,580 of 10,000 sows over 7 yr (1985-1992). Using prospective surveys and subsequent preventive veterinary medicine programs in pig farms, we demonstrated the value of risk-factor analysis in the improvement of production performances: an increase in litter size from 9.15 piglets born/litter (sd 2.93) to 13.4 (sd 2.13); an increase in number of weaned piglets per sow per year: 15.73 (sd 1.93) to 20.46 (sd 1.92); and a decrease in returns to oestrus (25.3 to 2.3%).
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