Effect of Olive Cake Pulp as A Partial or A Complete Substitute of Wheat Bran in Growing Rabbits’ Diet on Growth Performance, Carcass Traits and Blood Constituents under North Sinai Conditions

Abstract

Sixty weaned New Zealand white rabbits of both sexes aged 6 wk and weighed 715 g were randomly divided into four treatment groups (15 rabbits each) to evaluate the possibility of feeding growing rabbits on diets containing olive cake pulp (OCP) as partial or complete substitution of wheat bran. The first group (C) was fed the basal diet as control (0%OCP), while the other three treatment groups (L, M, H) were fed diets containing 15, 20 and 25%OCP, respectively replacing wheat bran in the basal diet. All the experimental diets contained nearly the same level of crude protein (CP) and digestible energy (DE). All the experimental diets were formulated to cover the nutrient requirements of rabbits. Results revealed that dietary treatments had no significant effect on live body weight (LBW), total weight gain (TWG), average daily gain (ADG) and daily fed intake (DFI) at different ages (6-14 wk). At the same time, LBW, TWG and ADG tended to be higher in rabbits fed M and H diets than those fed C and L diets. Daily feed intake of the L group tended to be lower (P>0.05) than that of the other groups (C, M and H). Feed conversion of H group was the best compared with the other groups (C, L and M groups). Glucose and triglycerides levels in blood serum of rabbits decreased significantly (P<0.05) due to treatment. However, serum total protein, albumin, globulin, Alb/Glo, cholesterol, urea, creatinine, AST and ALT were not affected significantly (P>0.05) by treatment. Almost carcass traits (empty carcass, edible giblets and dressing) were not affected (P>0.05) by treatment. From the economic point of view, it appears that the inclusion of OCP in growing rabbit diets by 15, 20, 25% instead of wheat bran as fed basis decreased feed cost/ kg gain by 9.11, 7.25 and 14.32%, respectively. The economic efficiency values of the experimental diets were increased by 23.88, 20.15 and 26.73%, respectively compared with the control diet. In conclusion, olive cake pulp (OCP) could be incorporated in growing rabbits diets up to 25% without adverse effects on growth performance, carcass traits, blood constituents and economic efficiency.

Economic, Productive, and Behavioral Evaluation of Using Dried Olive Cake and Ground Date Palm in Growing Rabbit’s Diet: Histological and Gene Expression Impact

“…This may be attributed to the presence of growth-promoting compounds in dates that enhance energy and protein utilization, as suggested by [64,65] resulting in a better synchrony between energy release and protein degradation, leading to increased microbial protein yield. In contrast, our research contradicts prior studies by [62,66,67,68], who found no significant variations in the live BW and BWG of rabbits fed diets containing olive by-products.…”

“…Additionally, our findings were consistent with those of [61] who found that incorporating 10% of date waste meal into the diet led to better final BW compared to higher percentages such as 30% and 40%. Furthermore, [11,62] Egypt. J. Vet.…”

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

“…Also, Walaa et al (2016) showed that carcass traits were significantly affected by OCM inclusion. While, Bakr et al (2019) showed that olive pulp inclusion in growing rabbits diets at varying levels (15, 20 and 25%) did not show any significant effect on all carcass traits. Similarly, Abd EL-Galil (2001) showed non-significant differences in carcass traits of rabbits fed either control or 20% olive pulp meal.…”

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

“…Salama et al (2016) showed that carcass traits were significantly affected by olive cake meal inclusion. While, Bakr et al (2019) showed that olive pulp inclusion in growing rabbits diets at varying levels (15, 20 and 25%) did not show any significant effect on all carcass traits.…”

“…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%. Cholesterol was not significantly affected for rabbits fed diets containing 20, 25 and 30% OP (Mehrez and Mousa, 2011) or diet containing OCM (Bakr et al, 2019). On the other hand, olive cake up to 9% in laying hens' diets had no significant influence on serum cholesterol and triglycerides (Zangeneh and Torki, 2011).…”