No abstract

Eighteen male crossbred Friesian steers aged 15 months with (ILBW) of 286.91±6.01 kg were collected and divided into three similar groups (six in each). The objective was to study performance of steers using probiotic bacteria or allzyme in ration. Trail lasted about 150d. Each animal was fed individually a basal ration 65% CFM+25% CS+10% alfalfa hay on DM basis (T1,control) or 5g probiotic bacteria/h/d (T2) or 4g allzyme h/d (T3). Animals fed ration supplemented with probiotic bacteria (T2) appeared the highest significant (P<0.05) in DM, OM, CP, CF and EE digestibility. The nutritive values as TDN and DCP were (P<0.05) higher in (T2) and (T3) than control (T1). While Ruminal pH records at 0 and 3 hrs decreased significantly (P<0.05) with (T2) and (T3) compared to (T1). Also, the concentration of NH3-N decreased. However, TVFA's concentration in rumen liquor at 0 and 3 hrs with (T2) and (T3) were higher than (T1). Probiotic bacteria or allzyme led to significant increase (P<0.05) in total protein and globulin with decreasing albumin. The DMI tended to increase with T2 and T3. Whereas, the intake of TDN and DCP increased significantly (P<0.05) in (T2 and T3) than (T1). Feed supplementations showed significant (P<0.05) enhancement in feed conversion. Economic efficiency was high for T2 and T3 compared to T1. It could be summarized that adding probiotic bacteria and allzyme to fattening steers rations led to improve digestibility coefficient, rumen fermentation activity, blood parameters and feed intake, tended to increase DWG, feed efficiency and economic efficiency.

Twenty four Friesian cows at 2 nd lactating season with average live body weight (LBW) 383 Kg. Animals were randomly distributed into four similar groups (6 animal each), to be fed concentrate feed mixture (CFM) containing cotton seed cake or soybean meal or DDGS as a source of protein in rations B, C and D, respectively compared to that containing each of them in ration A as a control ration.Feeding trial lasted about 210 days and animals fed CFM, berseem hay and rice straw with rate of 60, 25 and 15% respectively. These proportions were chosen to achieve approximately isonitrogenous rations containing a bout 13 % CP. The results obtained showed that digestibility coefficient of OM,CP,EE and NFE for ration D (containing DDGS) showed significant (P<0.05) higher than the others, while differences in DM and CF digestibility were higher significant (P<0.05) with feeding on ration C than A or B but without significant effect with ration D. Feeding values for ration D expressed as TDN (%), DCP (%), DE and ME (M cal / Kg DM) were significant (P<0.05) higher than the other rations. Ration D containing DDGS tended to significant (P<0.05) increased for both actual milk (9.028 kg) and 4% FCM yield (8.906 kg) and improved milk composition and their yields than rations A and B. Feed efficiency as kg DM/Kg actual milk or kg 4% FCM yields was the best with ration D, than the other rations. Ration D showed the cheapest feed cost to get one kg actual milk (2.072 LE) or kg 4% FCM yield (2.100 LE). Also, ration D gave the highest net revenue (35.464 LE) and economical efficiency (1.90). The mean values of the NH 3-N, Total-N and NPN (mg/100ml) concentrations were significant (P<0.05) higher by feeding on ration D. Blood parameters showed that there were no adverse effects, however these parameters were within the normal values.

The present work was carried out to study the effect of using dried distillers grains with soluble (DDGS) as a source of protein in ration formulation of buffalo calves. DDGS was included in concentrate feed mixture (CFM) at 0, 11, 16, 21 and 27% to cover 0, 20, 30, 40 and 50% of total protein, respectively. Fifty male buffalo calves averaging 320.16 kg live body weight were randomly distributed into five similar groups (10 in each) and assigned to receive five concentrate feed mixtures containing five levels of DDGS. Animals were fed CFM along with berseem hay and wheat straw at the ratios of 70: 20: 10, respectively. The feeding trail lasted 184 days, during which, five digestibility trials were carried out to determine the digestibility and feeding values of the experimental rations. In addition, samples of rumen liquor and blood serum were taken to determine some ruminal and blood parameters. Also, feed and economical efficiencies were studied. The results showed that: 1-Digestibility coefficients were significantly (P<0.05) higher in DM, OM, CP and CF with animals fed rations containing DDGS. Nutritive values expressed as TDN (%), DCP (%) and DE (Mcal/Kg DM) were significantly higher (P<0.05) for ration E (containing 27% DDGS) than the other rations. 2-Animals fed ration E (containing 27% DDGS) showed the highest TDN (77.03%) DCP (12.49%) and DE (3.40 Mcal/Kg DM) versus 65.67%, 11.00% and 2.89 Mcal/Kg DM for animals fed control ration. However, all experimental rations (containing DDGS) appeared to higher nutritive values than that of control ration. 3-The highest daily gain (1.170 Kg) was recorded with animals given ration E, which had 31.46% extra improvement and increase in weight gain. Also, animals fed experimental rations (B, C, D and E rations) tended to have better feed efficiency, showing the best feed utilization efficiency expressed as DM, TDN or DCP per Kg gain being 11.147, 8.586 and 1.392 Kg/Kg gain, respectively, for animals fed ration E. 4-Animals fed ration E (containing 27% DDGS) appeared to have the lowest feed cost/Kg weight gain (17.837 LE).The highest economical efficiency (1.233) versus the highest feed cost and lowest economical efficiency was observed with animals fed control ration (ration A). 5-All ruminal and blood serum parameters were within the normal values, showing that added DDGS in ration formulation of fattening buffalo calves had no adverse effects on serum parameters and led to get better performance of animals. Generally, it may be concluded that, the inclusion DDGS at 27% to cover 50% of total protein of concentrate feed mixture in fattening buffalo calves rations tended to produce better nutrient digestibility and feeding values. Moreover, animals fed rations containing DDGS had higher weight gains and lower feed cost with the best economical efficiency without any adverse effects on ruminal or blood serum parameters.

No abstract