| Abstract: |
This study was carried out to evaluate the effects of tafla and bentofarm addition on feed intake, water intake, digestibility, nutritive values, some rumen parameters, nitrogen retention, some minerals retention and some blood parameters of rams, growth performance and some blood constituents of growing lambs. Twenty seven Rahmani mature rams, averaged 45 kg of live body weight were divided randomly to three main groups each main group subdivided into three treatments (three animals each). Main first group fed 100% bereseam and served as control (T1), the other two subgroups fed the T1diet plus 3% tafla (T2) or 3% bentofarm (T3).The second main group fed 50% berseam and 50% concentrate feed mixture (T4), the other two subgroups fed the T4 diet plus 3% tafla (T5) or 3% bentofarm (T6).The third main group fed 100% concentrate feed mixture and rice straw (T7), the other subgroups fed (T7)diet plus 3% tafla (T8) or 3% bentofarm (T9).To carry out the growth trial, forty eight growing baladi male lambs about 2 months of age and average live body weight 17 kg were divided into six similar groups (eight lambs for each) according to their body weight. The experimental rations were: T4 -T9 in previous tasted rations. The results of digestibility of DM and CP significantly (P<0.05) decreased as a result of tafla and bentofarm addition than that of the control, while OM, CF, EE and NFE digestibilities were slightly improved with tafla or bentofarm compared with those of control, but the differences were not significant among treatments. However, the results of nutritive values as TDN, SV and DCP showed no significant differences among treatments. The results of ruminal parameters as TVFA’s, pH and microbial protein significantly increased as a result of tafla and bentofarm addition than that of the control, but the values of ammonia-N concentrations significantly decreased by addition of tafla and bentofarm compared with the control treatments. The amount of calcium, magnesium and iron retention g/h/d were significantly (P<0.05) higher by addition of tafla and bentofarm compared to the control treatments, while the results of phosphorus and zinc retention significantly (P<0.05) decreased by addition of tafla and bentofarm compared to the control treatment. However, copper retention as mg/h/d showed no significant differences among treatments. The results of feed intake, average daily gain, and feed efficiency improved for lambs supplemented ration with tafla and bentofarm compared with non supplemented ration but the differences between treatments were not significant. Blood serum chemical analysis showed that total protein, albumin, nitrogen, AST, ALT, T3, T4, creatinine, alkaline phosphatase, glucose, calcium, phosphorus and magnesium, iron, zinc, and copper were not significant affected by treatments and were within the normal ranges. It could be concluded that using tafla and bentofarm as replacement of 3% of dry matter intake for growing lambs which based on concentrate and green forage together resulted in better production performance and economic efficiency without any adverse effects on animals.
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