Effect of different levels of degradable and un degradable protein on  some blood parameters of karadi crossbred cattle

	Effect of different levels of degradable and un degradable protein on some blood parameters of karadi crossbred cattle
AL-TAQANI
Article 1, Volume 24, Issue 1, 2011, Pages 295-310
Abstract
The aim of this work was to study the effect of different levels of rumen degradable to un degradable protei (high:low, medium:medium, and low:high) in rations containing the same level of nitrogen and energy on daily feed intake and some blood parameters of Karadi crossbred cattle. The experiment were a series of 3×3 Latin Squares design. So that each group of cows received each treatment once during the experimental period (3 weeks). The first two weeks was considered a preliminary period and the third week as an experimental period. Cows were also fed a straw ad lib. Blood samples were collected from each cow at an intervals 0,6,12,18 and 24 hours and stored for analysis. Result revealed that the level of degradable protein in the rumen has no significant effect on daily dry matter feed intake organic matter total nitrogen and metabolizable energy the interaction of treatment × period was not significant on daily feed intake. Increase in the level of degradable protein in the rumen was associated with a significant increase in blood urea nitrogen (32.135, 26.689 and 22.607 mg/100ml) and uric acid (2.414, 2.273 and 2.243 mg/100ml), where as the treatment has no significant effect on total serum protein (6.649, 6.335 and 6.806 gm/100ml), albumin (3.358, 3.205 and 3.297 gm/100ml) and globulin (3.291, 3.13 and 3.509 gm/100ml). The highest concentration of Urea nitrogen, Uric acid and blood protein was attained at 6 hours post feeding.

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