It is estimated that the rice cultivated area in Egypt is estimated at about 1.4 million feddans producing about 3 million tons of rice straw. The same estimates indicate that the cultivated area of summer maize is estimated at 2.1 million feddans, which produces about 5.5 million tons of woodland (in 2013), Most of which are burned and not the maximum benefit. The problem of research is to increase the amount of agricultural waste, especially for rice and maize crops, and not to achieve the economic efficiency of these quantities of agricultural, And the study of the development of the area cultivated for each of the maize, cotton, sesame, sorghum, lupine, black beans, sugar beet, rice and the total of these crops in Egypt during the period (2000-2016) the annual average of about 324.44, 460.06, 72.66, 354.76, 4.07, 1471.2, 298.88, 1452.41, 3114.4 and the total area of the maize crop during the study period. The statistical significance of these equations was proved, while the sesame yield was not substantiated. The development of the production capacity of the most important plant waste was studied in Egypt during the period 2000-2016. The average annual production capacity of the maize, cotton, sesame,  sorghum, lupine, peanut, sugar beet, rice straw, These crops are 5586.12, 871.06, 94.47, 4.53, 235.65, 1711.65, 3217.06, 3217.06 and 2634.6 tons respectively during the study period. The  general trend equations showed a decrease in the production capacity of cotton, sorghum and thermos. While the production capacity of each of the sesame, peanut bean and sugar beet was increasing. The statistical significance of these equations was not proved, nor was the statistical significance of the production of maize, rice straw and total production capacity of these crops. The cost of feeding was about 13505.1 pounds, representing about 78.3% of the total average cost of the head, representing about 96.1% of the total average variable costs of the head of about 14049.2 pounds, and amounted to about 17574.8 pounds without the use of silage, which Indicates that the use of silage in nutrition leads to a reduction in feeding costs by about 4069.7 pounds per year, This is due to the lower daily costs of feeding the head of cows when using silage in feeding. The cost of producing a ton of milk for dairy cows that used silage was about 3849 pounds, while the cost of producing milk for the head of dairy cows that did not use silage for about 13715.1 pounds, The production of milk is about 2805.4 kg, and thus the cost of producing a ton of milk for dairy mixtures that did not use silage about 4888 pounds, due to lower feeding costs for animals that used silage than not used silage in feeding.

This study aimed to investigate the effect of a mixture of  (ZAD) and (Lacto bacillus plantarum) on chemical composition of green corn stover and corn stalks and the effect of  these treatments in a metabolism trial on digestibility coefficients , rumen fermentation and some blood parameters. One ton of either green corn stover or corn stalks was chopped into (2-3 cm) and  its mixed with 0. 5 cubic metre of water or one cubic metre of water, respectively. They were then mixed with 3%w/w molasses and 1.5%w/w urea and incubated for six weeks. The experiment included six treatments, three of them were on green corn stover and the rest were on corn stalks. The treatments on green corn stover were as follows: (T1) Untreated green corn stover (control). (T2) corn stover + lactobacillus palantarum + ZAD (2litres of ZAD + 1 liter of lactobacillus palantarum / 1ton). (T3) corn stover + ZAD ( 2 liters of ZAD/ 1 ton). The treatments on corn stalks were as follows: (T4) Untreated corn stalks (control). (T5) corn stalks + lactobacillus palantarum+ ZAD (2litres of ZAD +1 liter of lactobacillus palantarum /1ton) (T6) corn stalks + ZAD (2 liters of ZAD/ 1 ton). Eighteen Ossimi male lambs were divided to six group rations for 15 days in metabolism trials. Results indicated that biological treatment on T2 and T3 treatments  on green  stover and T5 and T6 on  dry corn stalks decreased CF and NDF, ADF, ADL contents and increased CP content compared to the control.   Feeding lambs on treated green corn stover or treated dry corn stalks significantly (P<0.05) improved all of nutrients digestibility compared with those fed on control. The nutritive values as TDN,  DCP and N balance for lambs fed treated green stover or treated dry corn stalks showed significant(P<0.05) higher than those fed untreated and it had the same trend of nutrient digestibility . Adding lactobacillus palantarum + ZAD improved digestion coefficients of nutrients and TDN values compared with control. Results of blood parameter indicated that T2 of green corn stover and T5 of corn stalks had a significant (P<0.05) effect on (Tp, Alb, Glb, A/G) compared to the control and T3 of corn stover and T6 of corn stalks. All values of plasma ALT and AST for all treatments were in normal rang where all treatments had no effect on ALT. However, T2 of green corn stover and T5 of corn stalks had a significant (P<0.05) effect on AST compared to the control and T3 of corn stover and T6 of corn stalks. All values of plasma creatinine and urea for biological treatments appeared to significant(P<0.05) higher values. However, these values were in normal range.   Results of rumen parameters indicated that all treatments had no effect on pH and NH3-N. On the other hand T2 of  green corn stover and T5 of corn stalks significantly (P<0.05) increased TVF'S. Generally, Adding enzyme with or without lactobacillus  to green corn stover or dry corn stalks tended to improved nutrient components , digestibility coefficients, feeding values and nitrogen balance with no adverse effect of animal health .

The current study aimed to investigate the effect of microbiological treatment on improving the nutritive value of corn silage as animal feed. Dried whole corn plants were prepared and two ground silos (0.5 ton each) wereused for ensiling whole corn silage and inoculated by bacterial inoculant (containing Lactobacillus plantarum and Entrococcus faecium) at the recommended rate of 1/2g bacterial inoculants/liter of water/ton of fresh whole corn silage. The ensiling period lasted for 50 days. The criteria of response were determined by: the quality of treated corn silage, chemical characteristics and performance of rams, nutrients digestibility and nitrogen balance. Results for treated and untreated silage, respectively, showed that the silage had pH 3.71 and 3.69, Total Volatile Fatty Acids (TVFA) were 2.48 and 1.98 mmol/100ml, and NH3-N values were 6.1% and 6.41% (on dry matter basis). The values of organic matter (OM), crude protein (CP), crude fiber (CF), ether extract (EE), nitrogen free extract (NFE) and ash content on dry matter basis, however, were very close in the two rations. There were no significant differences between the two rations for the dry matter (DM). The value of CF digestibility was not significantly different from that in treated corn silage, while ration contents of treated corn silage were significantly higher in OM, CP, NFE and EE digestibility than the untreated corn silage. Recorded values for total digestible nutrients (TDN) and starch value (SV) of rations of treated corn silage were significantly higher than those of untreated corn silage being 52.64 and 63.37 vs. 43.53 and 56.09%, respectively. The digestible crude protein (DCP) values were (7.43%) for ration of treated corn silage by 5.96% for the ration of untreated corn silage.