No abstract

This study carried out to determine the effects of substitution with 30 and 60% of olive cake instead of dietary clover hay in the diet without or with bentonite at levels of 0.5 or 1%on growing rabbit performance. Eighty-four weaning New Zealand White (NZW) rabbits about 6 weeks old and 789 ± 37.59g average live body weight were randomly assigned to seven groups, each with three replicates (of 4 rabbits) in a growth trail lasted for 8 weeks. Experimental diets were as follows: diet 1: A control without olive cake, diets 2, 3 and 4: 30% of clover hay was replaced with olive cake and diets were supplemented with zero, 0.5 and 1% bentonite respectively, diets 5, 6 and 7: 60% of clover hay was replaced with olive cake and diets were supplemented with zero, 0.5 and 1% bentonite, respectively. Results could be summarized as follows: 1-Feeding rabbits on diets with 30% olive cake plus 1% bentonite significantly resulted in the best final body weight, daily weight gain, feed conversion ratio, dressing %, ether extract digestibility coefficient, nitrogen balance and DE also it gave the highest relative economic efficiency. However, feed intake, digestibility coefficients of DM, OM, CP, CF and nutritive value in terms of TDN and DCP were not significantly affected by the different treatments. 2-Feeding rabbits on diets with 30% olive cake plus 1% bentonite significantly resulted in the best total volatile fatty acids concentration. However, ammonia concentration was not significantly affected by the different treatments. 3-Data showed significantly increased in globulin with 30% olive cake with or without bentonite. However, there were significantly decrease in the value of plasma cholesterol and total lipids for rabbits fed on diets 30% olive cake plus 0.5 and 1%. 212WALAA SALAMA et al.Conclusively, it could be recommended to incorporate olive cake with nucleus at the rate of 30%of the rabbit diets to replace clover hay provided that supplementing the diet with 1% bentonite to improve the performance and economic return of the rabbit production. Abd-El-Wahhab, M.S.; S.A. Nada and H.A. Amra (1999). Effect of alumino silicates and bentonite on aflatoxin-induced developmental toxicity in rat.

The current study investigated the effect of replacement of Untreated Orange Pulp (UOP) and Treated Orange Pulp (TOP) protein by basal diet protein on growth performance, digestion coefficients, some blood constitute of rabbits and economic efficiency of growing rabbit diets. Sixty cross bread (New Zealand White, NZW X California), six weeks of age with live body weight ranging from 729.20 to 738.30g were divided to five experimental groups. The experimental diets were T1, control diet without OP; T2, 5%UOP; T3, 5% TOP; T4, 10%UOP and T5, 10%TOP. The results indicated that TOP by Saccharomyces cerevisiae yeast increased content of the crude protein (%) and digestible energy (Kcal/kg). The best Final Body Weight (FBW, g), Body Weight Gain (BWG, g/R/day) and feed conversion ratio recorded in 5%TOP group. Digestion coefficient of Crude Protein and Digestible Crude Protein (DCP%) were significantly (P˂0.05) increased in rabbits fed low replacement level of OP (5% UOP and 5%TOP). Total lipid of plasma was significantly differences (P˂0.05) in groups fed experimental diets compared to control group. Liver function was significantly affected by experimental diets, yeast treatment and replacement level of OP. Best economic efficiency observed with 10%UOP followed by 5%TOP. It was concluded that rabbit group fed 5%TOP recorded a better performance, best digestibility for CP%, DCP and economic efficiency. Saccharomyces cerevisiae yeast treatment didn't effect on digestibility and nutritive value of growing rabbits.

his work aimed to study the influence of replacement 15 or 30% of soybean meal protein by either lentil screening by-products protein (LSBP) or chickpea screening by-products protein (CSBP) on performance, nutrients digestibility, plasma parameters, carcass measurements and economic profitability of growing rabbits. Sixty New Zealand White (NZW) growing rabbits, six weeks of age, were divided to five experimental groups. Each group included four replicates (three rabbits each) as follow: control group fed basal diet without LSBP or CSBP; the 2 nd , 3 th , 4 th and 5 th groups of rabbits fed 15% LSBP, 30% LSBP, 15% CSBP and 30% CSBP diets, respectively. Results showed that LSBP has lower DM, OM and EE contents than CSBP. Meanwhile, LSBP has higher CP, CF, ash% and GE (kcal/kg) contents compared to CSBP. LSBP was higher in arginine, threonine, isoleucine, and lysine. Meantime, CSBP had higher contents in leucine, methionine and phenylalanine as predominant essential amino acids. Inclusion of LSBP and CSBP insignificantly improved FBW, BWG and FCR. However, average daily feed intake of rabbits fed 15% CSBP was higher (P<0.05) than those fed 30% CSBP. No significant differences were observed in all nutrients digestibility (DM, OM, CP, EE and NFE) and nutritive values expressed as DCP%, TDN% and DE Kcal/kg between groups of rabbits fed LSBP and CSBP diets and those fed the control diet. Meanwhile, group of rabbits fed 30% LSBP had higher (P<0.05) CP digestibility. Conversely, group of rabbits fed 30% CSBP recorded the lowest (P<0.05) CP digestibility. Significant higher (P<0.05) values of plasma total protein and albumin concentrations were recorded for rabbits fed diets contained 30% LSBP, 15 or 30% CSBP than the control group. Moreover, there were insignificant differences in globulin and uric acid among all the experimental groups. Regarding liver functions (AST and ALT), there was a significant decrease (P<0.05) in AST levels with rabbits fed 30% LSBP and 15 or 30% CSBP compared to the control group. No significant differences in most carcass measurements were found between rabbits fed different levels of LSBP and CSBP diets and those fed the control diet except heart, kidneys weights and total edible parts %. The inclusion of LSBP at a level of 15% significantly decreased (P<0.05) total edible parts % compared with the inclusion of 30% CSBP and the control group. The net revenue improved by 4. 16, 7.75, 3.43 and 9.52% for 15% LSBP, 30% LSBP, 15% CSBP and 30% CSBP, respectively. The best net revenue and economical efficiency were recorded by 30% CSBP diet followed by 30%LSBP, 15%LSBP, 15% CSBP diets and the lowest one was the control group. In conclusion, lentil or chickpea screening by-products protein could be used up to 30% substitution level for soybean meal protein without any detrimental effects on performance, nutrient digestibility, plasma parameters and carcass measurements of growing rabbits.

he study was designed to investigate the reproductive performance of rabbit does fed different levels of discarded dates. The discarded dates were gathered, sun-dried and ground by hammer mill for proximate analysis and feed formulation. Four experimental diets were formulated to supply 18% crude protein and 2500 Kcal DE/kg. First diet was control, while discarded dates replaced barely grains at 25, 50, and 75% for the other three diets. A total number of 20 New Zealand White (NZW) rabbit does about 5 months of age, weighing about 2.827 ± 20.10 kg were randomly distributed into 4 experimental treatments (5 does/ treatment). Productive performance, blood constituents, thyroid activity, progesterone hormone assay and economic of efficiency were measured. Results indicated that: The gestation length, total feed intake, daily feed intake, mating weight, gestation and suckling weight, change in weight during gestation and suckling periods and total milk yield were not significantly affected (P≤ 0.05) by different treatments. The Litter weight at birth and kid weight at weaning were significantly increased (P≤0.05) for rabbits fed diets with 25% discarded dates as well as litter weight at weaning and kid weight at birth were significantly increased (P≤0.05) with rabbits fed diets containing 25 and 50% discarded dates. The catalase activity was significantly increased with rabbits fed diets containing discarded dates at levels 50 and 75%. Also, there were significantly decrease of glucose and lipid peroxides with rabbits fed diets containing discarded dates at 75% compared to those fed control diets. Progesterone hormone was significantly increased for rabbits fed diets with 25% discarded dates. Moreover, total trioiodothyronine values (T 3 ) were significantly increased with rabbits fed diets containing 25 and 50% discarded dates compared with control group. However, total thyroxin (T 4 ) was not affected by different treatments. The groups fed the diets with 75% discarded dates achieved the highest economical efficiency followed by those fed diet contained 50% discarded dates. It was therefore concluded that discarded dates as source of energy could replace 75% of barely grains in the diets of rabbit does without adverse effect on their reproductive performance.