Izvorni znanstveni članak
https://doi.org/10.5513/JCEA01/16.2.1578
The effect of the backfat thickness loss on reproduction in lactating sows
Luboš BRZOBOHATÝ
; Czech University of Life Sciences Prague, Faculty of Agrobiology, Food and Natural Resources, Department of Animal Husbandry, Kamýcká 129, 165 21 Praha 6 – Suchdol, Czech Republic
Roman STUPKA
Jaroslav Čítek
Michal Šprysl
Karel Vehovský
David Kureš
Sažetak
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.
Ključne riječi
backfat thickness; pigs; reproduction; sows
Hrčak ID:
141278
URI
Datum izdavanja:
15.6.2015.
Posjeta: 904 *