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Título
Subclinical ovine gestational toxaemia at parturition: Influence on determinant variables in lamb survival
Autor
Facultad/Centro
Área de conocimiento
Título de la revista
Revista Brasileira de Zootecnia
Cita Bibliográfica
Abreu-Palermo, M. C., Neimaur, K., Rodríguez-Gamarra, P., Irabuena, O., Perini-Perera, S., Acosta-Dibarrat, J., González-Montaña, J. R., & Cal-Pereyra, L. (2023). Subclinical ovine gestational toxaemia at parturition: Influence on determinant variables in lamb survival. Revista Brasileira de Zootecnia, 52. https://doi.org/10.37496/RBZ5220220114
Editorial
Sociedade Brasileira de Zootecnia (SBZ)
Fecha
2023
ISSN
1516-3598
Resumen
[EN] - The objective of this study was to determine the impact of metabolic
changes occurring in induced subclinical gestation toxaemia in ewes on metabolic
parameters and vigour in the first 72 h of their lambs’ life. Fifty-one adult Corriedale
ewes of known gestation date and fed on a natural pasture were randomly divided
into four groups at day 145 of gestation. Group A (ewes with single pregnancies) and
group C (ewes with twin pregnancies) were fed on a natural pasture throughout the
trial; group B (ewes with single pregnancies) and group D (ewes with twin pregnancies)
were subjected to 75% feed restriction for three days until they reached glycaemia
and β-hydroxybutyrate (BHB) values indicative of subclinical gestational toxaemia.
The birth-to-first station and birth-to-first suckling times of the born lambs were
studied. Within the first hour after parturition and at 24, 48, and 72 h, glycaemia and
BHB concentrations were determined in the blood of lambs, and body temperature
and body weight were assessed at the same time. Relative weight gain at 72 h of age
was calculated for all lambs. The BHB concentration determined at all times studied
showed no difference among the groups. Subclinical gestation toxaemia induced in
ewes subjected to feed restriction causes a decrease in the glycaemia of their lambs
in the first hour of life; however, it does not cause an increase in ketone bodies. The
metabolic changes induced in the mothers do not have negative effects on the vigour of
the lambs at birth, as the weight, temperature, and the time it took for lambs to stand
and suckle are not affected. However, they have a negative effect on relative weight gain
in the critical period of the first 72 h of life.
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