EFFECTS OF COW MILK AND SOYBEAN PROTEINS ON PLASMA-LEVELS OF GLUCOSE,LIPIDS, TRIGLYCERIDES, CHOLESTEROL, AND UREA IN UREA IN PRERUMINANT KIDS

This work was carried out to study the influence of age and morning fe eding on plasma levels of glucose, lipids, triglycerides, cholesterol, and urea of preruminant kids. They were fed with cow milk (CM) or wit h replacers, where 30 per cent (SP30) or 60 per cent (SP60) of cow mil k proteins were replaced by soy bean proteins. Eighteen crossbred male kids (Saanen) was used in the experiment. They were removed from thei r dams soon after birth and were fed with goat milk until the 7th day (400-500 ml/day). From the 8th (with a two days' transition) to the 49 th day, they received one of the three diets at a ratio of 200g liquid diet/kg/BW/day. Blood collects in the jugular vein were made before m orning feeding at the age of 7, 28 and 49 days, respectively, while at the age of 28 days a blood cinetic with socket was made before feedin g and 1, 2, 3, 4 and 6 hours after. The morning feeding provoked an in crease (P<.05) in the levels of glucose in the CM and SP60 diets in th e first three post-prandial hours. On the contrary, the levels of trig lycerides and cholesterol in CM, SP30 and SP60 diets were reduced sign ificantly after the feeding. The levels of lipids in the SP30 and SP60 diets decreased (P<.05) during the first 28 days of age and increased afterwards. The levels of triglycerides in SP30 and SP60 diets decrea sed (P<.05) during the experimental period, while the levels of choles terol, in the CM diet, increased (P<.05) over the first 28 days of age .