Relationship between fructusamine, glucose, total protein, and albumin concentrations of serum in late pregnancy and early lactation of dairy Saanen goat
The changes in serum fructosamine concentration
of dairy Saanen goats during late pregnancy and early
lactation and its relationship to serum glucose, total
protein, and albumin concentrations was investigated.
Eleven Saanen goats were selected for the study. Blood
samples were collected by the jugular vein in 30, 15
and 7 days before the expected time of parturition
(D-30, D-15, and D-7, respectively) and also 12 hours
and 3, 7, 13, and 42 days post-partum (H+12, D+3,
D+7, D+13, and D+42, respectively). The serum concentrations
of fructosamine, glucose, albumin, and
total protein were measured. The maximum concentration
of fructosamine was at 12 hours post-partum
and decreased thereafter. Serum concentration of glucose
significantly increased from D-15 up to 12 hours
post-partum and then decreased and stayed at the
same level. The serum concentrations of albumin and
total protein significantly increased during post-partum
period. There were significant correlations between
fructosamine and glucose concentrations at post-partum
period and overall time of the study. Linear regression analysis
between each sampling amount of glucose and three
consecutive fructosamine concentrations revealed significant
positive correlation between glucose of each sampling
time with the fructosamine of first sampling time thereafter.
According to the correlation between glucose and fructosamine
amounts during the study, especially post-partum
period in Saanen goat, fructosamine measurement could be
used as a useful indicator of energy economy and probably
stress in Sannen goat; but controversy between reports in
ruminants needs further studies for better understanding of
fructosamine as energy biomarker in ruminants