Insulin-like growth factor-I, GH, insulin and glucagon concentrations in bovine colostrum and in plasma of dairy cows and neonatal calves around parturition.
1. The IGF-I concentrations in colostrum on days 1 and 2 after parturition were higher than those in cow and neonate plasma. 2. The modest increase in GH concentrations in cow plasma around parturition would not be enough to stimulate IGF-I release by tissues. 3. The concentrations of insulin, GH and glucagon in colostrum were substantially lower than those in plasma.
Oda
S
S
Laboratory of Animal Physiology, Faculty of Agriculture, Tohoku University, Sendai, Japan.
Satoh
H
H
Sugawara
T
T
Matsunaga
N
N
Kuhara
T
T
Katoh
K
K
Shoji
Y
Y
Nihei
A
A
Ohta
M
M
Sasaki
Y
Y
D000818:Animals; D000831:Animals, Newborn / Q000097:blood*; D002417:Cattle / Q000097:blood*; D003126:Colostrum / Q000032:analysis*; D005260:Female; D005934:Glucagon / Q000032:analysis* / Q000097:blood; D013006:Growth Hormone / Q000032:analysis* / Q000097:blood; D007328:Insulin / Q000032:analysis* / Q000097:blood; D007334:Insulin-Like Growth Factor I / Q000032:analysis*; D007743:Labor, Obstetric / Q000097:blood*; D011247:Pregnancy; D013002:Somatomedins / Q000032:analysis*
D007328:Insulin; D013002:Somatomedins; D007334:Insulin-Like Growth Factor I; D013006:Growth Hormone; D005934:Glucagon