Browsing by Author "Redondo, Beatriz Isabel"

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    Differential effects of litter size and within-litter birthweight on postnatal traits of fatty pigs
    (2020) Vázquez Gómez, Marta; García Contreras, Consolacion; Pesántez Pacheco, José Luis; Torres Rovira, Laura; Heras Molina, Ana; Astiz, Susana; Óvilo, Cristina; Redondo, Beatriz Isabel; Gonzalez Bulnes, Antonio
    The current work evaluated the relative effects of the number of piglets in the litter of origin (high vs. low litter size) and the birthweight (low (LBW) vs. normal (NBW) in large litters) on postnatal performance and quality of carcasses and meat in purebred Iberian pigs. The results indicated that NBW piglets born in large litters had disparities in developmental patterns in weight and size, back-fat deposition, and fatty acid composition of viscerae compared to NBW piglets from small litters, which again were different from those found in LBW piglets when compared to their NBW counterparts. However, both growth patterns were altered and might indicate previous phases of metabolic disorders.
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    Maternal supplementation with polyphenols and omega-3 fatty acids during pregnancy: prenatal effects on growth and metabolism
    (2021) Astiz, Susana ; García Contreras, Consolacion; Redondo, Beatriz Isabel; Óvilo, Cristina; Nuñez, Yolanda; Heras Molina, Ana; Pesántez Pacheco, José Luis; Vázquez Gómez, Marta; López García, Adrián; Gonzalez Bulnes, Antonio; Benitez, Rita
    Maternal supplementation with antioxidants and n-3 PUFAs may be a promising strategy to reduce the risk of intrauterine growth restriction and preterm delivery, which may diminish the appearance of low-birth-neonates. A previous studies showed beneficial outcomes of the combination of hydroxytyrosol and linoleic acid, but there is no data of its prenatal effects. The present study aimed to determine the possible prenatal implications of such maternal supplementation at prenatal stages in swine, a model of IUGR pregnancies. Results showed effects on litter size, with treated sows having larger litters and, therefore, smaller fetuses. However, the brain/head weight ratio showed a positive effect of the treatment in development, as well as in some other major organs like lungs, spleen, or kidneys. On the other hand, treated piglets showed better glycemic and lipidemic profiles, which could explain postnatal effects. However, further research on the implications of the treatment on litter size and prenatal and postnatal development must be done before practical recommendation can be given.