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.
he study aimed to evaluate the effect of feeding Moringa oleifera leaves meal (MOLM) on productivity of growing rabbits and some related blood changes. Forty five weaned New Zealand White rabbits of both sexes aged 6 weeks and weighted 800 ± 39 g were randomly divided into three groups (15 each). Rabbits were fed diets containing 0%, 3% and 6% MOLM as substitute of alfalfa hay and soybean meal at (2:1) as T0, T3 and T6, respectively. The experimental diets were iso-nitrogenous (16.2 % CP) and iso-caloric (2530 kcal DE/kg diet). All the experimental diets were formulated to cover the nutrient requirements of rabbits. The experimental diets and fresh water were supplied ad-libitum throughout the experimental period (8 wk). Results revealed that inclusion of MOLM in rabbit diets did not significantly affected either feed intake, feed conversion or carcass traits. Albumin and ALT significantly affected due to MOLM feeding. Similarly, Mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), platelets counts, white blood cells (WBC), neutrophils and segmented cells were significantly affected by dietary treatment. MCV and MCH were decreased, however, platelet counts, WBC, neutrophils and segmented cells were increased (P<0.05) in rabbits fed MOLM diet compared to control. There were no significant differences among dietary treatments in blood hemoglobin (Hb), packed cell volume (PCV), red blood cell (RBCs) mean corpuscular hemoglobin concentrations (MCHC) and basophils. All blood biochemical and hematological parameters were within the normal range for healthy rabbits. Therefore, it can be concluded that inclusion of Moringa oleifera leaves meal in the diets of weaned New Zealand White rabbits up to 6% under North Sinai conditions had no adverse effects on its productivity and their blood profile. Moreover, these substitutions had not any bad effects on peripheral sings of health or internal sings, kidney, liver or blood characteristics of NZW rabbits.
A total of hundred and four New Zealand White (NZW) rabbits were chosen after weaned at 6 weeks of age and randomly divided into 8 equal groups (13 rabbits/ group) according to their initial live body weight (804.31±20g), to evaluate the utilization of dried taro waste (TW) without or with dried yeast (DY) in feeding growing rabbits and their response on growth performance, nutrients digestibility, carcass traits, some blood parameters, cecum activity as well as economic efficiency. Rabbits were fed ad-libitum on diets containing 0.0, 7.5, 15, 22.5% TW without supplement for groups G1, G3, G5 and G7, respectively and the other groups (G2, G4, G6 and G8) were fed the same levels of TW, with 0.5% DY. At the end of the experimental period (14 weeks of age), digestibility trials were carried out to determine the digestibility of feed nutrients and the feeding values of the experimental diets. In addition, four rabbits were slaughtered from each group to test the carcass traits, some blood parameters and cecum activity. The experimental diets were fed to growing rabbits for 8 weeks post-weaning period. Results revealed that the TW contained 2479 Kcal digestible energy/Kg, 16.41% crude protein, 14.30% crude fiber, 7.42% ether extract, 16.92% ash, 1.22% calcium 0.27% phosphorus on DM basis, and some antinutritional factor such as calcium oxalate (0.56%). Formulation of rabbit diets with different levels of TW (0.0, 7.5, 15 and 22.5%) without or with 0.5% DY showed no significant differences (P>0.05) among the dietary treatments in respect of live body weight and total weight gain at different ages (6-14 weeks). It was also clear that the insignificant highest weight gain was associated with rabbits fed diets containing DY (G2, G4 and G6) during 6-14 weeks of age than those fed the un-supplemented diets. Total feed intake of TWdiets was slightly decreased during the whole experimental period with G3 and G5, but significant decreased with G7 compared to that of control diet (G1). Supplemented DY with rabbit diets tended to improve total feed intake at 6-10 and 6-14 weeks of age comparing with the non-supplemented ones. Feed conversion and performance index didn't affected significantly by dietary treatments. In comparison with control diet, most nutrient digestibilities of most tested diets did not affected significantly. Almostly carcass traits (empty carcass, edible giblets, non-edible parts and dressing percentage) did not affected significantly by most tested treatments compared with control diet. TW or DY had slightly changes on blood constituents of experimental rabbits. Insignificantly higher concentrations of TVFA´s and ammonia-N were observed in the cecum contents of rabbits fed on the different levels of TW without or with DY compared with the control group. Similarly each of cecum weight and pH of cecum content were not significant changed by all tested rations based on control one. Profitability and economic efficiency were markedly improved with TW-diets without or with DY compared with control diet.In conclu...
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