Impact of sow energy status during farrowing on farrowing kinetics, frequency of stillborn piglets, and farrowing assistance1
| Autor: | T. F. Pedersen, Leslie Foldager, U. Krogh, Peter Kappel Theil, Takele Feyera |
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| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Pregnancy Meal Oxidative metabolism business.industry Late gestation animal diseases 0402 animal and dairy science Gravid uterus 04 agricultural and veterinary sciences General Medicine Stillbirth rate medicine.disease 040201 dairy & animal science 03 medical and health sciences Birth intervals fluids and secretions 030104 developmental biology Animal science Genetics Medicine Colostrum Animal Science and Zoology business Food Science |
| Zdroj: | Journal of Animal Science. 96:2320-2331 |
| ISSN: | 1525-3163 0021-8812 |
| Popis: | Farrowing duration is rather long in sows most likely due to selection for large litters, and we hypothesized that prolonged farrowings would compromise sow energy status during farrowing and in turn the farrowing process. Two studies were performed as follows: 1) to evaluate whether sow energy status during farrowing compromise the farrowing kinetics (FK, i.e., farrowing duration and birth intervals) and 2) to study the underlying mechanisms potentially affecting stillbirth rate and farrowing assistance. In study-1, parameters affecting FK were characterized based on data from a total of 166 farrowings from 7 feeding trials focused on sow colostrum production. The data were screened for associations with FK using the CORR procedure of SAS. Traits that were correlated with the FK at P 6 h) to evaluate the impact on birth intervals, farrowing assistance, and stillbirth rate. Birth intervals (P 6 h, respectively. In study-2, blood samples were collected once or twice each week in late gestation and each hour during farrowing to measure arterial concentrations and uterine extractions of plasma metabolites. Time since last meal was strongly negatively correlated with arterial glucose 1 h after the onset of farrowing (r= -0.96; n = 9; P < 0.001). Glucose appeared to be the key energy metabolite for oxidative metabolism of gravid uterus. In conclusion, the present study strongly suggests that a substantial proportion of sows suffer from low-energy status at the onset farrowing and that this negatively affects the farrowing process. Transferring this knowledge into practice, the results suggest that sows should be fed at least 3 daily meals in late gestation. |
| Databáze: | OpenAIRE |
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