Influence of Treated Orange Pulp on Growth Performance, Nutrients Digestibility and Plasma Constituents of Rabbits.

Abstract

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.

Effect of orange pulp with or without zeolite on productive performance, nitrogen utilization, and antioxidative status of growing rabbits

“…In the current study, the impact of dried OP incorporation, natural zeolite, or both in growing rabbitʼs diets on digestibility, nutritive value, N-balance, blood metabolites, antioxidant status, cecum characteristics, and microbiota was evaluated. The improvement in nutrient digestibility in the current study as a result of dried OP inclusion in rabbitʼs diets was in agreement with Suliman et al (2019) who recorded signi cant increases in digestibility of DM, OM, CP, and CF when dried OP was included at 8% of the rabbits' diet while using OP at 16% had no signi cant effect. Also, it was observed that replacing yellow corn in New Zealand rabbitʼs diets with 20, 40, or 60% dried OP, non-signi cantly improved the digestibility of DM and OM, and signi cantly the digestibility of CF (Ibrahim et al, 2011).…”

“…Contrarily, signi cant increases in DMI were observed with orange pulp or peel inclusion in the diets of rabbits(Hassan et al, 2021) or broilers(Abbasi et al, 2015;Abdulameer, 2018). Also, Fortomaris et al (2007) reported signi cant increases in DMI when zeolite was added to rabbit diets at the level of 1.25 and 2.5%.In concordance with the present data, non-signi cant differences were found in FCR values when rabbit's diet contained OP(Hon et al, 2009), orange peel extract(Hassan et al, 2021), or citrus pulp(Lu et al, 2018) Suliman et al (2019). recorded signi cantly higher values of FCR when 8 and 16% of dried OP were included in the rabbitsʼ diet.…”

“…In agreement with the current results, signi cant decreases in concentrations of blood cholesterol, triglycerides (Abbasi et al, 2015), and LDL (Hassan et al, 2021) either with dried OP or OP extract inclusion in broiler or rabbitsʼ diets, in the same order. However, OP had no signi cant effect on cholesterol and triglyceride concentrations in other studies (Abdulameer, 2018;Suliman et al, 2019). The ascorbic acid content in OP was found to have a role in preventing lipids peroxidation (Padayatty and Levine, 2016).…”

“…Also, pectin content in the citrus peel can treat diarrhea as a result of its high-water absorbing property (Ibrahim et al, 2011), which may be re ected in higher growth performance. On the other hand, the incorporation of dried OP (Hon et al, 2009;Ojabo et al, 2012;Suliman et al, 2019) or citrus pulp (Lu et al, 2018) in diets growing rabbits, had no signi cant effect on ADG.…”

“…Rabbits are characterized by their ability to utilize agricultural and agro-industrial by-products as major ingredients in their diets (E ong et al, 2016). The incorporation of these by-products in animal diets has the potential to reduce the environmental burden (De Blas et al, 2018), and also has a positive economic effect by decreasing the feeding cost (Suliman et al, 2019). Orange fruit pulp (OP) is one of the agroindustrial by-products, which is composed of orange seeds, peels, and pulp.…”