Influence of different sow traits on the expulsion and characteristics of the placenta in a free farrowing system
| Autor: | Alexander Grahofer, Heiko Nathues, C. Trachsel, S. Küker |
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| Rok vydání: | 2021 |
| Předmět: |
Litter (animal)
Swine Placenta animal diseases Biology Crossbreed 03 medical and health sciences fluids and secretions 0302 clinical medicine Animal science Food Animals Pregnancy medicine Animals 610 Medicine & health Small Animals reproductive and urinary physiology 030219 obstetrics & reproductive medicine 630 Agriculture Equine Parturition 0402 animal and dairy science 04 agricultural and veterinary sciences 040201 dairy & animal science Placenta part Phenotype medicine.anatomical_structure Animals Newborn embryonic structures 590 Animals (Zoology) Gestation Female Animal Science and Zoology |
| Zdroj: | Theriogenology. 161:74-82 |
| ISSN: | 0093-691X |
| Popis: | The last phase of parturition is the detachment and expulsion of the placentas and should not exceed a duration of 4 h after the birth of the last piglet. At present, only a small amount of information is available about factors influencing the expulsion of the placenta, especially in sows accommodated in free farrowing systems. This study aimed at investigating the influence of sow traits on placenta expulsion in a free farrowing system in Switzerland. In this study, 48 crossbred sows were included and the following traits of the sows were investigated: Backfat thickness, birth induction with at least 116 days of gestation with prostaglandin F2α, placenta parts and weight, placental efficiency (quotient of litter weight and placental weight) and expulsion of the first placenta part in relation to the last piglet. In addition, the farrowing process and litter parameters were recorded. The piglet expulsion duration (260.3 ± 199.5 min) and placenta expulsion duration (388.7 ± 300.2 min) were positively correlated (p = 0.001). Sows that expelled the first placenta part simultaneously with the last piglet or even before the last piglet was born showed a significantly prolonged piglet expulsion duration in comparison to sows that expelled the first placenta part after the last piglet was born (305 ± 216 min vs. 139.0 ± 34.9 min; p |
| Databáze: | OpenAIRE |
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