Variation in breeds in the period of gestation in pigs

Abstract

The autors have studied the duration of gestation in a total of 713 gestations amongst Large White sows, Landrace sows and hybrid Large White X Landrace sows, and have ascertained an average of 114,3142 ± 0.0660 days. 25 p. 100 of the gestations were of 115 days, whilst only 3.6 p. 100 were of less than 111 days or of more than 118 days. It has been established that there is a significant variation; (P<0.05) between the period of gestation of the Large White, Landrace and hybrid Large White X Landrace breeds.Los autores han estudiado la duración de la gestación en un total de 713 gestaciones, pertenecientes a cerdas Large White, Landrace e hibridros Large White x Landrace, obteniendo un promedio de 114"3142+ 0"0660 días. El 25 p. 100 de las gestaciones fue de 115 días, mientras que solamente el 3"6 p. 100 fueron inferiores a 111 días o superiores a 118 días. Se ha encontrado que existe variación significativa (P<0"05) entre el periodo de gestación de las razas Large White, Landrace e hibridos Large White X Landrace