Maternal undernutrition and offspring sex determine birth-weight, postnatal development and meat characteristics in traditional swine breeds
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2018
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Vazquez-Gomez, M.; Garcia-Contreras, C.; Torres-Rovira, L.; Astiz, S.; Ovilo, C.; Gonzalez-Bulnes, A.; Isabel, B.Maternal undernutrition and offspring sex determine birth-weight, postnatal development and meat characteristics in traditional swine breeds. JOURNAL OF ANIMAL SCIENCE AND BIOTECHNOLOGY. 9, BIOMED CENTRAL LTD, 19/03/2018. ISSN 2049-1891
Abstract
The aim of this study was to determine how maternal undernutrition during pregnancy and offspring birth-weight can affect the postnatal development of offspring under farm conditions, which may lead to consequences in its meat and carcass quality. The current study involved a total of 80 litters from Iberian sows fed a diet fulfilling daily requirements (n = 47; control) or providing 70% daily requirements (n = 33; underfed) from d 38 to d 90 of gestation when fetal tissue development begins. After birth, piglets born live were classified as low birth-weight (LBW; < 1 kg) and normal birth-weight (NBW; ≥1 kg). During the growing phase, 240 control and 230 underfed pigs (50% males and females) distributed by BW category and sex were studied until the slaughter.