Some bovine proteins behave as dietary fibres and reduce serum lipids in rats.

We examined the physiological importance of bovine dietary proteins in rats fed diets prepared from bovine Achilles' tendons and arteries. Rats were fed for 4 weeks, with a 20% casein diet (CON), in comparison with two diets containing 15% casein and 5% of either bovine Achilles' tendon (AC) or artery (AR) protein preparations. The serum total cholesterol concentration and non-HDL-cholesterol level in the AR-fed group were significantly lower (P< 0.