Risk Factors Affecting the Drop of Litter Size at Second Parity in Sows in La Piedad Michoacan, Mexico
| Autor: | José C. Segura-Correa, Juan G. Magaña-Monforte, Ricardo Aké-López, José Herrera-Camacho |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Scientific Papers Animal Science and Biotechnologies, Vol 47, Iss 1, Pp 281-281 (2023) |
| Druh dokumentu: | article |
| ISSN: | 1841-9364 2344-4576 |
| Popis: | A problem attributed to first parity sows is the second litter syndrome (the number of piglets of the second litter is lower or similar to the first litter). The objectives of this study were to estimate the frequency of sows showing the second litter syndrome and to determine the effect of some risk factors on the drop of the litter size of second parity sows in a commercial farm in La Piedad Michoacan, Mexico. Data on 6809 sows were used. The data were analyzed by a binomial logistic regression model. The model included the fixed effect of year and season of farrowing, breed group, weaning to service interval and pigs born alive at first parity. 48.1% of the sows showed the syndrome. Year of farrowing, weaning to service interval and pigs born alive had effect (P |
| Databáze: | Directory of Open Access Journals |
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