Influence of Maternal Factors (Weight, Body Condition, Parity, and Pregnancy Rank) on Plasma Metabolites of Dairy Ewes and Their Lambs



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Pesántez-Pacheco, Jose and Heras-Molina, Ana and Torres-Rovira, Laura and Sanz-Fernández, María and García-Contreras, Consolación and Vázquez Gómez, Marta and Feyjoo Vico, Pablo and Cáceres Martín, Elisa and Frías Mateo, Millán and Hernández, Fernando and Martínez-Ros, Paula and González Martín, Juan Vicente and González Bulnes, Antonio and Astiz, Susana (2019) Influence of Maternal Factors (Weight, Body Condition, Parity, and Pregnancy Rank) on Plasma Metabolites of Dairy Ewes and Their Lambs. Animals, 9 (4). p. 122. ISSN 2076-2615

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Pregnancy and lactation are challenging states that affect maternal and lamb health. In Lacaune dairy sheep, we evaluated the impact of parity, pregnancy rank, and body condition on body weight and the condition of ewes and lambs in mid-pregnancy (75 ± 5 d), in late pregnancy (142 ± 4d), and postpartum (52 ± 5d pp). Maternal age was associated with initial decreases, followed by increases, in body weight and condition. After lambing, both mature and maiden ewes lost weight and body condition. Maternal indices of glucose, protein, and lipid metabolism were within physiological values during pregnancy, but postpartum values depended on maternal parity and pregnancy rank, with multiple-pregnant ewes showing a postpartum increase in glucose and maiden sheep a postpartum increase in plasma cholesterol concentration. Male lambs were heavier than female lambs at birth, and lambs born to mothers with higher body condition scores were heavier. Lambs born as singletons were heavier than those born in litters. Maternal age and pregnancy rank did not influence lamb metabolic indicators. Sex affected plasma concentrations of glucose, triglycerides, and cholesterol. Maternal metabolic indicators showed minimal effects on lamb phenotype. These results suggest that, when appropriately fed, dairy sheep can cover the metabolic demands of pregnancy and milk production, regardless of age and pregnancy rank.

Item Type:Article
Uncontrolled Keywords:high milk yield; dairy sheep; pregnancy; age; metabolomics; body condition score; birth weight
Subjects:Medical sciences > Veterinary > Sheep
Medical sciences > Veterinary > Veterinary obstetrics
ID Code:64465
Deposited On:13 Apr 2021 16:25
Last Modified:14 Apr 2021 07:44

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