Ahmed Mahmoud Elmorsy

This study was implemented to evaluate the effect of partial replacement of whole corn plant silage (WCS) by pomegranate peel silage (PPS) treated with enzymes mixed (ZYMOGEN) or lactic acid bacterial inoculants (Inoculant 1188) on nutrient digestibility and productive performance of dairy cows. The first experiment two stacks of PPS and WCS were prepared. WCS was replaced by PPS, at 25:75, 50:50 and 75:25, respectively used in forming three rations. The second experiment has been carried with twenty lactating crossbred Friesian cows in four similar groups (5 cows / group): the control group was fed a ration consisting of WCS. G1 (WCS replaced with untreated PPS at level 50:50), G2 (WCS replaced with PPS treated with bacterial inoculants at level 50:50) and G3 (WCS replaced with PPS treated with ZYMOGEN at level 50:50). The results showed the values of CP, NFE and lactic acid were highest, while values of NDF, ADF, pH, the concentration of NH3 -N and acetic acid were lowest in all groups treated PPS. The values of digestibility coefficients, nutritive values, ruminal fluid fermentation of TVFAs and acetic acid, milk yield, 4% FCM, milk composition, blood proteins were highest, while the values of ruminal fluid fermentation of pH and NH3 N were lowest in group 2 and 3 compared with other groups. It concluded that using of treated or untreated pomegranate peel is safe in dairy cows feeding at a level of 20%. The addition of ZYMOGEN or inoculant 1188 to PPS improved fermentation and nutritive quality of silage along with its nutritive values.

Effect of Biological Extract Supplementation on Milk Yield and Rumen Fermentation in Dairy Cows

The objective of this study was to investigate the effect of treatment of different fungal species on nutrient utilisation and rumen fermentation in adult sheep. Four total mixed rations containing watermelon straw (WMS) treated with Pleurotus columbinus, Aspergillus niger and Penicillium oxalicum or untreated were prepared. Three Barki female sheep fitted with permanent rumen fistula were used to estimate rumen fermentation and fiber fraction degradation in rumen. There was a significant (PPenicillium oxalicum and Pleurotus columbinus had the highest cellulose degradability while the ability of A. niger was higher for hemicellulose degradation.

This study was carried out to evaluate the impact of dietary supplementation of probiotic (Diamond XP™) T1 or prebiotic (BioBoostTM) T2 on nutrient digestibility, rumen fermentation characteristics, productive performance and economic efficiency of Barki lambs. Lambs in control group offered a concentrate feed mixture (CFM) and clover hay without supplementation while, lambs in treatment (T1) and treatment (T2) were fed CFM supplemented with probiotic or prebiotic at rate of 10 g/ head/ day, respectively. Nine barki male sheep (47kg ± 2.5) were used for running metabolism trail. The animals were allocated into three equal groups. Three ruminally cannulated ewes (45 kg ± 3.2) were used to study the rumen liquor parameter, while growth performance trails were carried out with twenty four growing male Barki lambs (27.5 kg ± 0.75) used to determine the growth performance, feed conversion and economic efficiency.The obtained results could be summarized as follow: Animals given ration supplemented with probiotic recorded the highest values of (p<0.05) digestibility and nitrogen utilization followed by animals given ration supplemented with prebiotic, however those fed control ration had the lowest values. The same trend was observed with TDN and DCP values.No significant (p<0.05) differences among rations in ruminal pH values, were recorded while total volatile fatty acids (VFA’s) concentration and microbial protein synthesis had significantly (p<0.05) increased with probiotic supplement. The control ration recorded the highest ruminal NH3-N concentration. A positive impact of probiotics (DFM) and prebiotic supplementation on nutrient intake, feed conversion ratio and economic efficiency have been recorded. It could be concluded that feeding lambs on rations supplemented with either probiotic (DFM) or prebiotic at 10 g/h/d has beneficial effects on rumen parameters, digestibility coefficients, growth performance and economic efficiency of growing Barki lambs.