Imroving Nutritive Value of Olive Trees by-Products by Biological and Chemical Treatmentsand Its Effect on Sheep Performance

Abstract

his experiment was conducted to study the effect of biological and chemical treatments of olive trees by-products on chemical composition, degradability, cell wall constituents, digestibility and nutritive value and its feeding effect on productive performance of growing sheep. Eighteen (½ Finnish Landrace × ½ Rahmani) lambs with average body weight 18.00±0.40 kg and 4 months old were used in this study for 120 days. Lambs were distributed into three similar groups (6 lambs each) and randomly assigned to three experimental rations. The three respective rations composed of concentrate feed mixture (CFM) + olive trees by-products, the control ration (R1) contained untreated olive tree by-products; (R2) treated olive trees byproducts with EM1 and (R3) treated olive trees by-products with El-mofeed. The digestibility and nutritive values of experimental rations were determined using nine adult Ossimi rams. Rumen liquor and blood samples were collected at the end of collection period. The results showed that nutrient digestibility and feeding values (TDN and DCP) were higher (P<0.05) for rations containing treated olive trees by-products than control. The highest values of TDN and DCP were observed for R2. Digestibility of cell wall constituents (NDF, ADF, cellulose and hemicellulose) were improved by treatments. Concentrations of rumen parameters (NH 3-N and TVFA's) were significantly (P<0.05) increased by treatments. However, no significant (P>0.05) differences were found in blood constituents (total protein, albumin, globulin, GOT, GPT and urea) among the different experimental groups. Blood sereum constituents were generally normal in all experimental groups. Growth performance with respect to total body weight gain and average daily gain (ADG) were improved by biological and chemical treatments. The same trend was observed for feed conversion and economic efficiency and the best values were recoded with R2. It was concluded that inclusion of biologically treated olive trees by-products to rations of growing (½ Finnish Landrace × ½ Rahmani) lambs could improve their performance especially treatment of olive trees by-products.

Intake, digestibility, growth performance and blood profile of rams fed sugarcane bagasse or rice husk treated with Trichoderma viride and effective microorganisms

“…The finding is in agreement with Fouda (2008) who reported a lower feed costs per kg of weight gain and higher net profit per animal in lambs fed fungal treated diets compared to lambs fed untreated diet. Similarly, lower feed cost per kg gain and higher net revenue were reported by Mahrous et al. (2019) and Maharous et al.…”

“…(2011) reported that treatment of rice straw (RS) and corn stalks (CS) with Trichoderma viride improve the digestibility of CP, CF, NDF, ADF, ADL and cellulose with a ration containing biologically treated by-products than untreated. Mahrous et al. (2019) stated that the digestibility of dry matter, organic matter, crude protein, nutreal detergent fiber and acid detergent fiber were significantly higher in sheep fed ration containing olive tree by-products treated with EM than untreated.…”

“…This result agrees with Mulgeta (2015) and Girma and Alemayhu (2018) , who obtained significantly higher DM and nutrient intake in lactating dairy cow fed EM treated barley straw as compared to untreated. Also Maharous et al. (2019) and Maharous et al.…”

“…(2015) who reported that sheep fed diets containing biologically treated sugarcane bagasse or rice straw had higher body weight gain and feed conversion efficiency as compared to sheep feed untreated roughages. Moreover, Mahrous et al. (2019) and Maharous et al.…”

The Effect of Partial Replacement of Clover Hay With Fungal Treated Rice Straw on Growth Performance, Digestibility, Rumen Fermentation, Blood Biochemical and Immune Status of Barki Sheep

“…Van Soest (2006) summarized the main deficiencies of RS that affect its value as a ruminant feed as being its high lignin content and conversion to silicates, delayed and limited degradation of carbohydrates, and low nitrogen content. According to Kholif et al (2005) and Mahrous (2005), roughages treated with fungi had higher TDN levels and DCP compared to untreated materials, and they also had better (P < 0.05) nutrient digestibility.…”