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 present study was intended to investigate the influence of using 20% and 40% treated or untreated wheat germ meal in growing New Zealand rabbit diets. A total of 75 weaned New Zealand White rabbits aged six weeks old, with an average initial weight of 659.60±18.84g were divided into five groups with five replicates in each group (three rabbits per replicate). The first group was fed on a basal diet (T 1 ), second and third groups received diets containing Wheat Germ Meal (WGM), as replacement of soybean meal protein, at levels of 20% and 40% and were labeled as T 2 , T 3 , respectively. Fourth and fifth groups were fed with 20% and 40% autoclave-treated WGM (T 4 and T 5 , respectively). The trial was continued until 14 weeks of age. The present study was evaluated growth performance, blood parameters, carcass traits, meat quality in different groups and also economic efficiency was calculated. There were insignificant differences in terms of live weight, daily weight gain, carcass weight and dressing percentages among rabbits in groups of T 1 , T 2 , and T 4 . Rabbits in the group of T 4 achieved the best feed conversion ratio. Digestion coefficients of crude protein, crude fiber, ether extract, nitrogen-free extract, and nutritive value in terms of digestible crude protein, total digestible nutrition, and digestible energy did not significantly differ between T 1 and T 4 . However, these factors significantly decreased in T3 and T 5 compared to T 1 . Plasma total protein and globulin significantly increased in rabbits of T 2 and T 4 compared to those fed in T 1 group. A significant decrease in total cholesterol and total lipid for rabbits in groups of T 4 , T 5, and T 2 was observed. Moreover, rabbits fed on T 4 or T 2 diets had the highest economic efficiency. Conclusively, the untreated or autoclaved WGM can be used in growing rabbit diets up to 20% for replacing the soybean meal protein, which caused low feed costs without adverse effects on the growth performance of rabbits.
This study carried out to determine the effects of substitution 25 and 50% of clover hay with discarded palm fronds (DPF) or biologically treated discarded palm fronds (Bio-DPF) in does diet on reproductive, physiological response and economic efficiency of New Zealand White (NZW) rabbit does. Twenty five New Zealand White (NZW) does aged 5 months weighting 3140± 26.55g were randomly distributed into 5 experimental treatments (5 does/ treatment). Experimental diets were as follows: diet 1: A control without substitution, while in the other diets contained 5 and 10% untreated and treated discarded palm fronds with Effective microorganisms (EM 1) to substitute 25 and 50% of clover hay of control diet. Results could be summarized as follows: Biological treatments was improved chemical composition of DPF which mainly CP content was markedly increased but CF was decreased. Inclusion of Bio-DPF in does diet affected significantly both daily feed intake and change in weight of does during gestation and suckling period compared with other treatments. Diets with Bio-DPF significantly (P≤ 0.05) achieved the best figures for litter size of and weights from birth up to weaning that in turn revealed significant (P≤ 0.05) decreased in mortality rate (%) as compared to group fed diet contain 50% DPF. Feeding the does on diets contained Bio-DPF significantly (P≤ 0.05) produced the highest milk yield. Data showed significantly increased in total protein and globulin with Bio-DPF. However, there were significantly decrease in the value of plasma cholesterol and total lipids for rabbits fed on 50%DPF and Bio-DPF. 6-It can be noticed that rabbits fed on the diets contained Bio-DPF had the best economic return compared to other treatments.
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.
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