INFLUENCE OF SUCKLING PERIOD AND SEASON ON WEANING -TO- CONCEPTION INTERVAL IN SOWS | ВЛИЯНИЕ НА ПРОДЪЛЖИТЕЛНОСТТА НА БОЗАЙНИЯ ПЕРИОД И СЕЗОНА ВЪРХУ ПРОДЪЛЖИТЕЛНОСТТА НА ИНТЕРВАЛА ОТБИВАНЕ-РАЗГОНВАНЕ ПРИ СВИНЕТЕ МАЙКИ
2013
Petrova, M., Agricultural Institute, Shumen (Bulgaria) | Marchev, Y., Agricultural Institute, Shumen (Bulgaria)
Evaluation of the influence of the suckling period and season on weaning-to-conception interval on the basis of information from 690 sows - LWxL was carried out. Data from two levels of suckling period – 4 and 5 weeks and for 4 seasons were analyzed. An average duration of 7.61 days of the weaning-to-conception interval was established. Phenotypic variability in dependence on the studied factors was observed. For 4 week suckling period the weaning-to-conception interval was 7.1 days and for 5 week – 8.03 days. Season had significant - P0.05 effect on this interval, lowest in autumn - 6.87 days and highest in summer - 8.12 days. In the other two seasons the duration of weaning-to-conception interval takes intermediate position – 7.82 days in the spring and 7.28 days in the winter.
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