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| Rangstrup-Christensen, Lena; Krogh, Mogens Agerbo; Pedersen, L.J.; Sørensen, Jan Tind. |
| In Danish organic pig production, one-third af total bom piglets die befare weaning, and stillbirth has previously crudely been estimated to account for 2 7% af the total preweaning mortality. The objective af this study was to evaluate season, litter size, parity and body condition af the sow as risk factors for stillbirth in nine commercial Danish organic pig herds. The study was conducted over a 1-year period, and the data included registrations an 5170 farrowings with 82 906 total bom piglets. The average number af total bom piglets per titter was 16. 0, and the number af stil/bom piglets per titter was 1.1. A significant effect af season was seen with an odds ratio for stillbirth af 1. 15 during summer (May to August) compared with the remaining part... |
| Tipo: Journal paper |
Palavras-chave: Health and welfare. |
| Ano: 2016 |
URL: http://orgprints.org/33728/1/S1751731116002408 |
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| Pedersen, L.J.. |
| En gris mere pr. kuld og grise, der vejer et kilo mere vedfravænning: Det er de mål, som forskerne går efter i et nyt projekt, der sigter på at nedsætte pattegrisedødeligheden i den økologiske svineproduktion fra 33 til 20 procent. Frisk luft og frit løb – det er hverdagen for økologiske grise, der ser ud til at have det godt, når man ser på dem udfolde sig omkring deres hytter i marken. Der er imidlertid en bagside til medaljen. En ud af tre økologiske pattegrise dør, inden de når fravænning. Det gør forskere fra Aarhus Universitet nu noget ved isamarbejde med erhvervet i et nyt projektfinansieret af Fødevareministeriets Grøn Udvikling- og Demonstrationsprogram. Nogle af de tiltag, som forskerne vil undersøge, er fremavl af søer, der er bedre tilpasset... |
| Tipo: Newspaper or magazine article |
Palavras-chave: Breeding and genetics. |
| Ano: 2014 |
URL: http://orgprints.org/29217/1/29217.pdf |
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| Rangstrup-Christensen, Lena; Krogh, Mogens Agerbo; Pedersen, L.J.; Sørensen, Jan Tind. |
| Piglet mortality is a major problem in organic pig production affecting both farm economy and animal welfare. Knowledge is scarce on the risk factors of piglet mortality in Danish commercial organic pig production. The objectives of this study were to evaluate season, litter size, parity, sow body condition and stillborn littermates as risk factors for early piglet mortality and crushing of liveborn piglets from parturition until castration at day 3 to 5 postpartum (pp). The study was conducted over a 1-year period in nine commercial Danish organic pig herds practicing outdoor farrowing all year round. Data included recordings on 3393 farrowings with 50 284 liveborn piglets of which 14.8% died before castration. A subset of the dead piglets were collected... |
| Tipo: Journal paper |
Palavras-chave: Health and welfare. |
| Ano: 2017 |
URL: http://orgprints.org/33729/1/S1751731117002178 |
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| Rangstrup-Christensen, Lena; Schild, Sarah-Lina Aagaard; Pedersen, L.J.; Sørensen, Jan Tind. |
| The aims of the current study were to identify the causes of preweaning piglet mortality and investigate the effect of season and parity on the proportions of mortality causes. The study was conducted in nine herds over a one-year period, and dead piglets were collected for necropsy once during each of the four seasons. In total, 2672 piglets were necropsied of which 60% were live-born but died post-partum (pp), 32% were stillborn and 8% were euthanised. Intra-partum deaths accounted for 88% of stillborn piglets. Eighty-one percent of necropsied live-born piglets died within four days pp. Half of these had a body weight of <1 kg at the time of death. Crushed and starved piglets accounted for 83% and 9% of mortalities until day four pp, respectively.... |
| Tipo: Journal paper |
Palavras-chave: Health and welfare. |
| Ano: 2018 |
URL: http://orgprints.org/33730/2/Levering%201.4_Causes%20of%20preweaning%20mort.pdf |
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