The present study was conducted to study the effect of protected-glutamine (Gln) supplementation on dry matter intake (DMI), milk yield (MY) and composition, somatic cell counts (SCC) and blood parameters in fresh cows. Forty Holstein cows at zero day of parturition (calving day = day 0) were divided into four groups (n=10), and fed (ad libitum) with one of the diets including: basal d...

Microspheres consisting of a central core of amino acid and binding agents which are coated with a pH sensitive (neutral stable/acid unstable) polymer have been developed by Rhone Poulenc. This new technology allows orally administered amino acids to avoid exposure to and degradation by, rumen microbes but allows bio-availability following release and absorption at the abomasum and distal gut s...

The effect of rumen-protected methionine (RPM) was investigated in Awassi ewes (0, 3 or 5 g/head/d, n = 20) on reproductive and productive performance (initial body weight [BW] 70.9 − 71.8 kg, years). Supplementation started with the flushing feeding regime (at breeding time) lasted for 42 d. RPM reused during last 60 d pregnancy first lactation. increased (p < .05) progesterone concentration a...

Twenty four primiparous and multiparous Holstein cows on early lactation, beginning five weeks postpartum, were used for four weeks to investigate the effects of supplemention of rumen-protected choline (RPC) or vitamin E on milk yield, milk composition, dry matter intake, body condition score and body weight. The cows were randomly assigned to one of the following treatments: I)no supplement (...