Abstract
ABSTRACT: Adaptive changes in metabolism may occur under specific physiological conditions, being necessary the knowledge of the biochemical constituents that can undergo variations during the sixty days before foaling, until the first sixty days of lactation. The present study aimed to identify and evaluate the biochemical profile of Mangalarga Marchador mares during the last third of pregnancy, foaling and lactation. For this, 48 mares were used, which formed a maintenance group (MG), composed of non-pregnant mares and an experimental group, called the transition group (TG), formed by pregnant mares. Blood samples were collected at the following times: MG was evaluated in a single time (beginning of all collections); TG was evaluated in seven times [T-60, T-30, T-15 (days before foaling), T0 (first six hours after foaling), T15, T30, T60 (days after foaling)]. All animals were submitted to biochemical analysis, in which the concentrations of total calcium, chloride, phosphorus, magnesium, sodium, potassium, uric acid, creatinine, and urea were measured. The two groups differed significantly (P<0.05) in calcium, magnesium, sodium, potassium, creatinine, uric acid and urea concentration. Variation between times was also observed for these compounds. However, chloride and phosphorus did not differ between MG and TG. It was concluded that the last third of pregnancy, foaling and lactation exerts major influence on the biochemical constituents of blood through adjustments to maintain homeostasis in mares.
Highlights
Pregnancy is a dynamic physiological condition that alters metabolism of all maternal nutrients (BAZZANO et al, 2014)
To understand how different physiological conditions in the last third of pregnancy, foaling and lactation affect mares, the aim of the research was to evaluate the biochemical profile of Mangalarga Marchador mares during the last third of pregnancy, foaling and lactation
Forty-eight Mangalarga Marchador mares were divided into a maintenance group (MG) consisting of non-pregnant and non-lactating mares (n=22) at baseline, and a transition group (TG) (n=26) composed of mares pregnant at the end of the third
Summary
Pregnancy is a dynamic physiological condition that alters metabolism of all maternal nutrients (BAZZANO et al, 2014). Transition period is the interval between parturition and early lactation (MANSO FILHO et al, 2008). Biochemical parameters change to mark different gestational phases (NASEEMA et al, 2017). V.49, n.11, development and the fetus survival. There is a reduction in food intake at the end of pregnancy, due to fetal size compressing the abdominal internal space. This phase occurs to higher fetal metabolic demand. Post foaling energetic demands continue with milk production to meet foal nutritional needs, while mares require energy to recover in the postpartum period (HURA et al, 2017)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
