Benedito CJL, Castillo RC, Hernández BJ, Gutiérrez PC, García PP

Language: English/Spanish
References: 18
Page: 35-40
PDF size: 494.78 Kb.

ABSTRACT

The behaviour of three serum microminerals (iron, copper and zinc) in forty healthy adult ewes of the Gallega breed has been studied during different productive periods: Anoestrus, pregnancy, parturition, puerperium and lactation. Variations of these oligoelements in each period depending on the effect of single or twin pregnancy were also recorded. Sampling began considering a baseline state. The samples were taken monthly during pregnancy and afterwards during the peripartal moment (divided in three phases), and ten days after delivery, considering this last one as lactation. Serum oligoelement determinations were done using an atomic absorption spectrophotometer, employing Zeeman's effect. All data were processed through an analysis of variance (Anova-I and Anova II). Results showed that there were significant modifications in the oligoelement serum values. Iron and copper serum concentrations changed in the last month of pregnancy and after parturition; this was more evident in twin pregnancy than in the single one. Serum zinc did not vary during pregnancy, but parturition (5-10 hours) and lactation implied significant modifications in its values.

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