Assessment of gastrointestinal permeability to small marker probes in the preruminant calf.

Effects of raw pea flour on nutrient digestibility and immune responses in the preruminant calf.

Two milk substitute diets for which the protein was provided either exclusively by skim milk powder (control) or partially (34%) by dehulled raw pea flour were given for 2 and 4 wk, respectively, to five preruminant calves, each fitted with a reentrant ileocecal cannula. Ileal apparent digestibility was lower with the pea diet during wk 1 than with the control diet. Four of the cannulated calve...

Enzyme potentialities of the abomasum and pancreas

The effect of age on the enzyme potentialities of abomasum (chymosin and pepsin) and pancreas (chymotrypsin, trypsin, lipase, colipase and amylase) was studied in the preruminant calf. Three foetuses were collected after slaughter of their dams (260 d of gestation) and 32 calves were maintained as preruminant and slaughtered between birth and 147 d of age. The abomasal mucosas and pancreata wer...

Effects of dietary fat and L-methionine on the hepatic metabolism of very low density lipoproteins in the preruminant calf, Bos spp.

The effects of triglycerides (TG) from tallow (1.21 and 2.13 g TG/kg of body weight (BW) per meal, diets R and B respectively) and from tallow plus cream (2.50 g TG/kg of BW per meal, diet L) with or without L-methionine (2.6 g/kg dry matter) on hepatic apparent secretion of very low density lipoproteins (VLDL) were investigated in 3 groups of 4 preruminant calves fitted with chronic catheters ...

Digestion of allergenic soya protein in the preruminant calf.

Importance of the portal venous pathway to the transport of intestinal triglyceride-rich lipoproteins in the preruminant calf.

It is generally accepted that intestinal triglycerides are secreted into lymphatics mainly as chylomicrons (CM) but also as very-low density lipoproteins (VLDL). In the preruminant calf, we recently observed the presence of triglyceride-rich particles (d < 1.018 g/ml) in portal venous blood (Bauchart et al, 1989). In order to evaluate the contribution of the portal vein to the transport of inte...