Utilization of Olive Pulp in Feeding New Zealand White Doe Rabbits and Their Offspring Under the Conditions of North Sinai

Abstract

The effects of feeding four dietary treatments containing 0, 20, 25 and 30% olive pulp without nucleolus as replacement for barley grains to does and growing rabbits on nutrients digestibility and nutritive values, productive and reproductive performance, growth performance and economical efficiency were studied. The digestibility of DM, CP and CF significantly (P<0.05) decreased with increasing olive pulp level up to 30%. However, digestibility of OM was not significantly affected by olive pulp inclusion. The gestation period, litter size at birth and at 28 days and litter weight at birth were insignificantly affected by olive pulp inclusion. The results indicated significant differences (P<0.05) among treatments in bunny weight at birth, at 21days and at 28 days, litter weight at 21days, at 28 days and at 35 days of age (weaning age), daily gain from birth to 21 days and from birth to 28 days and viability (%) from birth to 21 days, from birth to 28 days and from birth to weaning. No significant differences were observed in total milk yield among doe rabbits fed olive pulp (OP). The growth performance traits, the daily body weight gain significantly (P<0.05) decreased by increasing OP level more than 25%. Rabbits fed diets containing olive pulp can reduce production costs. Accordingly, olive pulp without nucleolus could be used successively and safely instead of barley in feeding doe rabbits during gestation period up to 25% , up to 20% during lactation period, and up to 25% for growing rabbits without adverse, under North Sinai conditions.

Growth performance, digestive function, thyroid activity, and immunity of growing rabbits fed olive cake with or without Saccharomyces cerevisiae or citric acid

“…The enhancement in carcass weight by the addition of organic acids or probiotics may be due to their role in enhancing nutrient digestibility by modifying the gut microbial content (reduction in pathogenic load) and gut morphology, which leads to increased digestion and absorption of nutrients and enhanced feed conversion ratio (Afsharmanesh et al 2010 ; Elbaz et al 2021 ). In line with our findings, Mousa and Abd El-Samee ( 2002 ) reported that carcass traits of rabbits were not affected by olive pulp inclusion in rabbits’ diets. Reports have shown that diets containing CA or probiotics achieved increased carcass weight in rabbits and poultry (Abdel-Khalek et al 2012 ; El-Sawy et al 2021 ).…”

Impacts of Enzymes and Probiotic in Improving the Utilization of Sieved Olive Pulp Meal on Reproductive Performance and Some Blood Traits of Rabbit Bucks

“…The dietary treatments had no effect on the levels of total lipids, total protein, A, G, A/G ratio, or the liver enzymes ALT and AST. According to Mousa and Abd El-Samee (2002), the inclusion of olive pulp in growing rabbit 'diets had no significant influence on the experimental groups' serum globulin, total lipid, glucose, creatinine, AST, or ALT concentrations. The same trend was noticed by Mehrez and Mousa (2011), who found that concentrations of total protein, A, G, cholesterol, urea-N, AST and ALT did not differ significantly with olive pulp inclusion in rabbit diets at levels up to 30%.…”

EFFECT OF USING SOME SEA-GRASS (Cymodocea nodosa) AND VEGETABLE CROP RESIDUES AS UNTRADITIONAL FEEDS IN GROWING RABBITS DIET ON GROWTH PERFORMANCE UNDER NORTH SINAI CONDITIONS.

“…All diets of trials were subjected to economic evaluation. Economical efficiency is predefined as the net revenue per unit feed cost calculated from input output analysis as described by Hassan et al (1996), El-Kerdawy (1997) and Mousa and Abd El-Samee (2002).…”