The Influence of Sow Age on Gestation Duration and Number of Piglets

VASILE MICLEA, MARIUS ZAHAN, IULIAN ROMAN, ILEANA MICLEA, BOGDAN NEGRESCU

Abstract


The influence of insemination age on prolificacy and gestation duration was established for Camborough sows kept in an intensive system. According to age the animals were divided into three groups: 180-242 days; 244-304 days and more than 304 days. The data indicates that 68.35% of the sows are pregnant at the age of 212.80 days, 25% at 267.0 days and 9.61% at 331 days. The optimum age for the first fertile insemination is of up to 242 days. The number of piglets per sow increases and the gestation duration decreases. There is a statistically based negative correlation between prolificacy and gestation duration for precocious sows. The delays in gestation have a negative influence on the number of piglets and consequentially on the economical aspect.

Keywords


sows; prolificacy; insemination; gestation duration; correlations

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DOI: http://dx.doi.org/10.15835/buasvmcn-asb:66:1-2:3330




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