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Studies on reproductive performance of sows in Cuba. 2. Effect of year on efficiency (number of farrowings per insemination), comparing gilts and sows and 1st, 2nd and 3rd oestrous periods



Studies on reproductive performance of sows in Cuba. 2. Effect of year on efficiency (number of farrowings per insemination), comparing gilts and sows and 1st, 2nd and 3rd oestrous periods



Ciencia y Tecnica en la Agricultura, Ganado Porcino 7(4): 15-21



Data on 6469 matings and 4288 farrowings of 2300 crossbred gilts and sows were analysed. Of sows mated in Jan.-Apr., May-Aug. and Sep.-Dec., 71.86, 66.04 and 67.0% resp. conceived vs. 62.09, 60.30 and 58.43% of gilts, the difference between sows and gilts being significant.

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