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۱Effect of Using Polyethylene Glycol or Sodium Bentonite on Performance of Sheep Fed Acacia saligna
نویسنده(ها): ، ، ، ،
اطلاعات انتشار: World Applied Sciences Journal، سي و دوم،شماره۱۱، ۲۰۱۴، سال
تعداد صفحات: ۸
This study was carried out to evaluate the effects of adding polyethylene glycol (PEG 4000), sodium bentonite to Acacia saligna hay as a roughage in the diet to deactivate it's content of tannins. Twenty healthy growing Barki lambs averaged of 30.90±4.63 Kg body weight were randomly divided into four groups (five animals of each) in fattening trial lasted for 180 days. Nutrients digestibility, nitrogen balance, blood serum metabolites, rumen parameters, weight changes and average daily gain (ADG) were determined. Animal groups were fed on concentrate feed mixture (CFM)+ berseem hay (G1), CFM + acacia hay (G2), G2 diet + 5% PEG (G3) and G2 diet + 4% bentonite (G4). Results revealed that group one had higher values of digestibility coefficients for DM, OM, CP, CF, EE and NFE than the other groups. All animals were in positive nitrogen balance (from 3.99 to 12.13 g\h\d). The highest amount of nitrogen was in G1 and the lowest was G2. Ruminal total volatile fatty acids (TVFA's) and ammonia–nitrogen were increased to reach the peak value at 3hr post feeding. All serum blood metabolites were in normal ranges. Total dry matter intake was 1.69, 1.25, 1.39 and 1.42 Kg, for the experimental groups, respectively. Average daily gain was 149.22, 67.2 , 79.32 and 78.00g\d for the experimental groups, respectively. Finally, G1 recorded the best digestibility coefficients, nitrogen balance, total dry matter intake, total digestible nutrients (TDN), digestible crude protein (DCP), ADG with normal blood parameters compared with the others. However, Adding PEG and sodium bentonite to Acacia diet could be used to increase feed intake utilization as result of tannins deactivation.
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