The apparent intestinal synthesis of carotene by sheep.

Effect of Supplementing Common Reed (Phragmites australis) with Urea on Intake, Apparent Digestibility and Blood Metabolites of Baluchi Sheep

To evaluate the effects of treating or supplementing common reed (Phragmites australis) with 2% urea on intake, nutrient apparent digestibility, and blood metabolites, fifteen Baluchi rams (35.4±2.3 kg body weight) were used in a completely randomized design. Treatments were as follows: 1) common reed, 2) common reed supplemented with 2% urea solution at feeding, and 3) common reed tre...

Observations on the Incidence, Epidemiology, Control and Economic Importance of Gastro-Intestinal Parasites of Sheep and Goats in Iran

Effects of fiber source on apparent digestibility and ruminal fermentation parameters in sheep fed high-concentrate diets

Sixteen rams (mean age: 13 mo; mean live weight: 40.0 ± 2.4 kg) were randomly allotted to four dietary treatments in a completely randomized design (4 rams per treatment). Diets (dry matter basis) contained 65% concentrate and 35% alfalfa hay (control diet, T1), 35% wheat straw (T2), 35% barley straw (T3) or 35% maize straw (T4). Total-tract apparent digestibility for dry matter, organic matter...

Food Matrix Effects on Bioaccessibility of β-Carotene Can be Measured in an in Vitro Gastrointestinal Model

Since the food matrix determines β-carotene availability for intestinal absorption, food matrix effects on the bioaccessibility of β-carotene from two diets were investigated in vitro and compared with in vivo data. The "mixed diet" consisted of β-carotene-rich vegetables, and the "oil diet" contained β-carotene-low vegetables with supplemental β-carotene. The application of extrinsically label...

The site of conversion of carotene to vitamin A.

The liver has for a long time been considered as the main site of metabolic activity and it seemed natural that, when hioore (1930) demonstrated that carotene is converted in the animal body to vitamin A which is then stored in the liver, he assumed (Moore, 193 I ) that it is in the liver that conversion takes place. This view was generally held for the next 15 years though the supporting exper...