THE EFFECT OF THE BACKFAT THICKNESS LOSS ON REPRODUCTION IN LACTATING SOWS

THE EFFECT OF THE BACKFAT THICKNESS LOSS ON REPRODUCTION IN LACTATING SOWS
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BRZOBOHATý , L., STUPKA, R., ČíTEK , J., ŠPRYSL, M., OKROUHLÁ, M., VEHOVSKY, K., KUREš, D.THE EFFECT OF THE BACKFAT THICKNESS LOSS ON REPRODUCTION IN LACTATING SOWS

2015, 16(2), p.1 - 9, DOI: http://dx.doi.org/10.5513/JCEA01/16.2.1578

Abstract

The work discusses the influence of the backfat thickness change, during sow´s lactation, on their subsequent litter characteristics. The reproduction potential of 478 sows of two genotypes was assessed. The genotypes were 50 Large White (LWD) sows and 428 crossbreeds Large White x Landrace (LWD x L) sows. The backfat thickness decline was examined in accordance to P2, backfat thickness in sows during lactation namely 1 day before planned parturition as well as weaning.From the obtained results it can be stated that the backfat thickness decline level during lactation has a small influence on the number of total born piglets. In contrast, the number of piglets born alive increased when backfat thickness rate increased. With a moderate backfat thickness decline, the average birthweight piglets gradually increased. However, the opposite trend was shown for the average weight at weaning. The backfat thickness decline level during sow´s lactation influences their farrowing interval. Animals with a lower increase of the backfat thickness subsequently showed a shorter farrowing interval (148.99, respectively 151.86 days), as well as a shorter weaning – estrus interval.

Keywords:
backfat thicknesspigsreproductionsows