Influence of Using Olive Cake Meal With or Without Sodium Bicarbonate on Productive Performance of Growing New Zealand White Rabbits

Abstract

The present experiment was carried out to investigate the possibility of incorporating 10 and 20 % of olive cake meal (OCM) with or without 0.25% and 0.50% sodium bicarbonate (NaHCO 3 ) in the rabbit diets and their effects on growth performance, carcass traits, blood constituents, nutrient utilization and economical efficiency of growing rabbits. A total of 105 unsexed, New Zealand White (NZW) weaned rabbits of 4 weeks of age were randomly assigned to 7 equal experimental groups (15 rabbits each). Rabbits were housed individually in wire mesh cages. The first treatment served as control without additives. The 2 nd , 3 rd , and 4 th treatments contained 10 % OCM supplemented with zero, 0.25 and 0.50 % NaHCO 3 , respectively. The 5 th , 6th and 7 th treatments contained 20 % OCM supplemented with zero, 0.25 and 0.50 % NaHCO 3 , respectively. Results revealed that rabbits fed diet supplemented with 10 % OCM with 0.25 NaHCO 3 recorded the highest value of final body weight, total gain, daily weight gain and performance index (%). In addition, diets with 10 and 20% OCM with 0.25 or 0.50 NaHCO 3 numerically increased digestibility coefficient of CP and significantly increased (P≤0.01) digestibility coefficient of CF as compared with other groups. Whereas, 20% OCM without NaHCO 3 attained the worst nutrient digestibility for all parameters studied. Also, rabbits fed 10 % OCM with or without NaHCO 3 were more efficient in feeding utilization than the others. Furthermore, Rabbits fed 10 % OCM plus 0.25 or 0.50% NaHCO 3 diets had the highest significance (P≤0.01) in carcass % compared with others. Rabbits fed diet supplemented with 10% OCM without NaHCO 3 had the lowest values of all traits.Furthermore, the differences for serum cholesterol, triglycerides and albumin concentrations were highly significant (P≤0.01) whereas, the differences were significant (P≤0.05) for ALT, and non significant for total lipids, total protein, globulin, A/G and AST. Data on serum cholesterol concentrations were greater in for the groups that were fed 10 or 20 % OCM without NaHCO 3 (P≤0.01) compared with others. There were an improvement in economical efficiency (EEf) and relative economical efficiency (REEf) for rabbits fed diets 10% OCM, without or with NaHCO 3 , as compared with other groups.In conclusion, results of this study indicated that inclusion of olive cake meal (OCM) in growing rabbit's diet at a level 10% with or without sodium bicarbonate may be useful and have significant impact on growth performance, carcass characteristics, blood components and economical efficiency.

Utilization of Untreated and Treated Olive Pulp Meal in Feeding Broiler Chicks الاستفادة من مسحوق تفل الزيتون المعامل وغير المعامل في تغذية کتاکيت التسمين

“…Results obtained of LBW and BWG in the present study disagree with these reported by Azazi et al (2020) who found that the rabbits fed on the diet supplemented with 10 % olive cake meal with 0.25 sodium bicarbonate (NaHCO3) recorded the highest value of final body weight, total gain and daily weight gain. Also, Balnave and Oliva (1991) noted that supplemented with NaHCO3 in diets or drinking water produced a significant improvement in birds.…”

“…There were not significant differences among the experimental treatments for the intestinal weight and length (%).The value of cecum weight was observed with T1 compared to the control and other treatments, control group. The results of Azazi et al (2020) disagree with our results where the rabbits fed 10 % olive cake meal plus 0.25 or 0.50% sodium bicarbonate (NaHCO3) had the highest significance (P≤0.01) value of carcass (%) compared with the others. On the other hand, rabbits fed on the diet supplemented with 10% olive cake meal without NaHCO3 had the lowest values of all traits.…”

“…The lowest value of LDL was noticed with T2 treatment (12% OPM+Fungus) and the highest value was observed with T4 treatment (15% OPM), while T5 treatment (15% OPM+Fungus) recorded the highest level of HDL and the lowest level was observed with T4 treatment (15% OPM) followed by T1 (12% OPM) compared to the other treatments. These results agree with Azazi et al (2020) who noticed that rabbits fed diets with 10% olive cake meal (OCM) plus 0.25 or 0.5% NaHCO3 had the lowest (P≤0.01) plasma triglyceride while concentrations of serum cholesterol were higher in groups fed diets with 0 or 20% OCM without NaHCO3 (P≤0.01) compared with other treatments. Abdel-Aleem (2010) observed that plasma cholesterol concentration of growing rabbits was significantly decreased with increasing the level of NaHCO3 from 0.5 to 1%.…”

Effects of Feeding Exhausted Olive Cake on Rabbit Performances, Visceral Development and Carcass Characteristics

“…These trials have demonstrated the viability of incorporating olive cake into fattening diets without compromising growth performance. The consensus suggests that such inclusion improves the economic efficiency of rabbit production, given that feed constitutes a substantial proportion of overall costs (Kadi et al, 2004;Chaabane et al, 1997;Dorbane et al, 2016;Salama et al, 2016;Bakr et al, 2019;Dorbane et al, 2019;Rupić et al, 2019;Wahed et al, 2019;Azazi et al, 2020). Conversely, the use of EOC in rabbit production remains relatively unexplored.…”