Effects of extra feeding in mid-pregnancy for three successive parities on lean sows' productive performance and longevity
The aim of this study was to investigate the long-term effects of increasing feeding allowance during mid-pregnancy in sows. A total of 103 PIC pregnant sows (mixed parity) were allocated to two treatments: control (C, n49) were fed 2.5 3.0 kg d 1 (12.1 MJ ME kg 1) and extra-fed (E,n 54) received 2....
| Autores: | , , , , , , |
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| Formato: | artículo |
| Fecha de publicación: | 2010 |
| País: | España |
| Recursos: | Universitat Autònoma de Barcelona |
| Repositorio: | Dipòsit Digital de Documents de la UAB |
| Idioma: | inglés |
| OAI Identifier: | oai:ddd.uab.cat:165632 |
| Acesso em linha: | https://ddd.uab.cat/record/165632 https://dx.doi.org/urn:doi:10.4141/CJAS10040 |
| Access Level: | acceso abierto |
| Palavra-chave: | Porcs Reproducció Sow nutrition Body reserves Sow performance Nutrition des truies Réserves corporelles Performances des truies |
| Resumo: | The aim of this study was to investigate the long-term effects of increasing feeding allowance during mid-pregnancy in sows. A total of 103 PIC pregnant sows (mixed parity) were allocated to two treatments: control (C, n49) were fed 2.5 3.0 kg d 1 (12.1 MJ ME kg 1) and extra-fed (E,n 54) received 2.0 kg d 1 of the same feed from day 4 5to 8 5of gestation over three consecutive cycles. Body weight, backfat thickness (BF) and loin depth were measured on days 4 5and 8 5of gestation, farrowing and weaning. Litter and sows performance were recorded during lactation and post-weaning. Overall culling rates were 61 and 67% for C and E groups, respectively. After three cycles, E sows showed a positive BF balance in contrast to C sows (E 1.46 mm and C 1.81 mm, PB 0.05). In cycle 3, E sows presented greater piglet birth weights than C sows, being mainly evident in sows that were nulliparous at the onset of the experiment (PB 0.05). Extra-fed sows showed a greater incidence of mastitis-metritis-agalactia syndrome than C sows (P 0.003). Thus, increasing feeding allowance during mid-pregnancy positively affected BF balance and birth weight in nulliparous sows,but impaired the sows' ability to produce milk in the long-term. |
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