Effect of Dietary Additives on Rabbit Performance, Carcass Traits and Some Blood Constituents under Egyptation Summer Season

Sherif, Sara Khalil

doi:10.5539/jas.v10n1p139

Cited by 9 publications

(12 citation statements)

References 32 publications

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“…The current finding is in harmony also with the result of Bhatt et al (2017), who found that rabbits given probiotic(Lactobacillus acidophilus)-enriched drinking water displayed significantly better daily weight gain compared with the control group. The positive effects of supplemental probiotics on growth rate of rabbits have also been reported by El-Deek et al (2013), Amber et al (2014), Chandra et al (2014), Lam Phuoc and Jamikorn (2017) and Sherif (2018). On the contrary, other authors found no positive effect of probiotics on growth performance of rabbits (Matusevicius et al, 2006;Kimse et al, 2008;Rabie et al, 2011;Fathi et al, 2017).…”

Section: Effect Of Dietary β-Pro Supplementationsupporting

confidence: 61%

“…Under such stressful situations, the supplementation with probiotics for rabbits would be beneficial to encourage the growth and proliferation of certain strains of beneficial bacteria in the gastrointestinal tract at the expense of less desirable ones (Sharma et al, 2016). Probiotic supplementation has been found to improve the growth rate and the efficiency of feed utilization in rabbits (Amber et al, 2014;Ren et al, 2016;Bhatt et al;2017;Lam Phuoc and Jamikorn, 2017;Sherif, 2018). Other studies, however, showed no positive effects of probiotics on growth performance of rabbits (Ewuola et al, 2011;Shrivastava et al, 2012;Fathi et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Influence of Weaning Age and Dietary Βeta-Pro Fortification on Performance and Carcass Traits of Rabbits

Ismai

Dorra

Sherif

et al. 2018

Journal of Animal and Poultry Production

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A factorial experiment (3×2) was carried out to study the effects of weaning age (at 4 and 5 weeks old) and dietary β-pro supplementation () 0.0, 0.02 and 0.04%) on growth and carcass traits in fattening rabbits. Seventy two unsexed New Zealand White (NZW)× Californian (CAL) rabbits, weaned at 4 or 5 weeks old, were randomly distributed into six equal groups of four replications, each contained three rabbits. Three experimental diets were fortified with three levels of β-Pro (0.0, 0.02 and 0.04%) and formulated to meet the nutrient requirements of growing rabbits. Rabbits of each replication were weighed, kept in a battery cage, fed their respective experimental diet and managed similarly during the duration of this study. Deaths was monitored and registered daily. Weekly records on live body weight (LBW) and feed intake (FI) were maintained on a replicate group basis, and thus, body weight gain (BWG) and feed conversion ratio (FCR) were estimated. The efficiency of protein (PER) and energy utilization (EEU) and economic efficiency of feeding (EEF) were calculated for the whole experimental period. Some carcass traits were also determined. The results obtained could be summarized as follows: No mortality was observed in the experimental rabbits during this feeding trial. Regardless of dietary β-pro supplementation, delaying weaning age to 5 weeks significantly increased (P≤0.01) total FI and final LBW of rabbits compared with those of rabbits that were weaned at 4 weeks old. Dietary supplementation with β-pro failed to significantly affect the final LBW of rabbits but caused a significant (P≤0.01) increase in total FI and when the level of its addition reached 0.04% total BWG improved significantly(P≤0.01), irrespective of weaning age. Neither weaning age nor dietary β-pro supplementation could significantly alter FCR, PER, EEU or EEF during this study. The interactions between weaning age and dietary β-pro supplementation were not significant (P>0.05) for all growth performance criteria, except for the total FI the interaction was significant (P≤0.01). Carcass traits of rabbits were not affected by weaning age, dietary β-pro supplementation or the interactions between them. Based on the present results, delaying weaning of rabbits to 5 weeks old along with addition of 0.04% β-pro to their diets are recommend to achieve better growth performance, with no adverse effects on carcass traits.

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Section: Effect Of Dietary β-Pro Supplementationsupporting

confidence: 61%

Section: Introductionmentioning

confidence: 99%

Influence of Weaning Age and Dietary Βeta-Pro Fortification on Performance and Carcass Traits of Rabbits

Ismai

Dorra

Sherif

et al. 2018

Journal of Animal and Poultry Production

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“…On the contrary, Matusevicius et al (2006) compared with control group of rabbits, the weight gain of NZW rabbits fed 400 mg/kg of probiotic Bio Plus 2B ® was not significantly different. Recently, Sherif (2018) found that rabbits reared under stress summer conditions receiving enzymes at 0.5 g/kg, β-pro ® at 0.2 g/kg, organic acids at 1.0 g/kg or their mixture of enzymes, βpro ® and organic acids in the diet had the positive effects on daily weight gain compared with control group.…”

Section: Growth Performancementioning

confidence: 99%

“…The better rate of growth, FCR and rate of mortality with oral administration of ZAD ® may be because of including probiotics that can improve the intestinal balance of the host animal, impact of caecal fermentation and the bowel weight in rabbits (Kermauner and Struklec, 1999); improved the status of health and intestinal function of growing rabbits (Trocino et al, 2005 andKritas et al, 2008). In the other wise, dietary β-pro ® (probiotics+ enzymes) or a mixture of organic acids, βpro and enzymes can be improving the rabbit performance (Sherif, 2018).…”

Section: Growth Performancementioning

confidence: 99%

Rabbit Growth, Carcass Characteristic, Digestion, Caecal Fermentation, Microflora, and Some Blood Biochemical Components Affected by Oral Administration of Anaerobic Probiotic (Zad®)

Abdel-Azeem

Hassan

Basyony

et al. 2018

Egyptian Journal of Nutrition and Feeds

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he current research designed to study the influences of diverse doses of oral administration of anaerobic probiotic (ZAD®) on growth performance, carcass characteristic, digestibility coefficient, caecal activity, microflora and some blood biochemical components of growing rabbits. At 6 weeks (average body weight 539.87±13.35 g), one hundred and eighty weaned male rabbits from New Zealand White (NZW) were randomly distributed to four groups. The control group received orally 0.0 ZAD ® ; the experimental groups administrated orally with 0.25, 0.5 and 1.0 ml ZAD ® /rabbit/day, respectively. The experimental period lasted for 8 weeks. Groups 0.25 ZAD ® and 0.5 ZAD ® had improved feed conversion ratio and body weight gain and the lowest mortality rate. In comparison with the control and 1.0 ZAD ® groups, the groups 0.25 ZAD ® and 0.5 ZAD caused a significant increase (P≤0.05) in nitrogen utilization, nutritive value and digestibility coefficients. The different doses of ZAD ® had improved dressing percentage and percentage of edible parts, although parts of total non-edible were decreased (P≤0.001) compared to the group of control. As well as, cecum activity (caecum pH, total volatile fatty acids, acetic, propionic and butyric acid) were improved significantly by administrated orally different doses of probiotic ZAD ® 0.25, 0.5 and 1.0 ml/rabbit/day compared with the control group. The opposite trend was observed in ammonia concentration which had been reduced significantly by administrated all doses of ZAD ®. In addition, a total number of anaerobic bacteria were less than those of total microbial count and coliform group but, they have the same trend of decreasing the number as the amount of anaerobic probiotic ZAD ® increased. Also, fermentation of lactobacilli take the opposite trend as the amount of probiotic ZAD ® increased the lactobacilli number increased. As streptococci isolated was lower than lactobacilli group. As the concentration of probiotic ZAD ® increased isolates numbers decreased, also lactobacilli enumeration increased. The serum total protein, albumin, globulin, and albumin: globulin concentration of rabbits received probiotic ZAD ® groups were significantly augmented compared with the group of control. On the contrary, levels of creatinine and urea in rabbit serum were not significantly affected by probiotic oral administration ZAD ®. Alanine aminotransferase and aspartate aminotransferase enzymes of serum were significantly decreased with augmenting levels of ZAD ®. Serum levels of total cholesterol (TC), lipoproteins of low density (LDL), very low-density lipoproteins, triglycerides, total lipids, and LDL: lipoproteins of high density (HDL) ratio were significantly decreased with augmenting levels of ZAD ®. But, the HDL: TC and HDL: LDL ratio augmented significantly with probiotic oral administration ZAD ® levels.

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“…High stocking densities have an adverse effect on the performance of rabbits. Cage density and housing system can also affect welfare and production of rabbits (Szendro andLuzi, 2006 &Sherif 2018). Growth performance of rabbits depends on group size and cage dimensions.…”

Section: Introductionmentioning

confidence: 99%

Response of Growing Rabbits to Stoking Density and Dietary Supplementation With Ascorbic Acid, and Vitamin E Under Summer Conditions

Sherif

2018

EPSJ

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In factorial arrangement of treatments (2×4), an experiment was conducted to evaluate the effects of stocking density and vitamin C, vitamin E and their combination on growth performance of Californian rabbits during summer season (high ambient temperature of 36.4 • C and maximum relative humidity of 97%). Sixty unsexed 7-week-old rabbits were distributed into 8 groups of three replications each. The rabbits were kept in battery cages at two stocking densities; 10 or 15 rabbits/m 2 and were fed on four experimental diets; first group was fed the control diet. The other three experimental diets were formulated to contain vitamin C (0.5 g/kg diet), vitamin E (0.25 g/kg diet) or both at the same suggested levels. Growth trial lasted for 7 weeks. The tested criteria included live body weight, live weight gain, feed intake, feed conversion ratio, some blood metabolites and carcass characteristics. Low stocking density increased significantly final live weight, daily weight gain and feed intake. The concurrent administration of vitamin C and vitamin E significantly improved the final body weight, daily gain and feed conversion ratio of rabbits. However, stocking density did not significantly affect feed conversion, carcass traits or plasma blood parameters. The single or combined addition of vitamins C and E significantly increased the percentages of carcass yield and total edible parts. A significant reduction was observed in plasma albumin level due to added dietary vitamin E. The effect of interaction between added dietary vitamins and cage density did not significantly affect most of variables examined in the present study. It can be concluded that stocking density of 10 rabbits/m 2 or combined addition of dietary vitamins C (0.5g/kg diet) and E (250 mg/kg diet) may improve rabbit performance during summer season.

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Effect of Dietary Additives on Rabbit Performance, Carcass Traits and Some Blood Constituents under Egyptation Summer Season

Cited by 9 publications

References 32 publications

Influence of Weaning Age and Dietary Βeta-Pro Fortification on Performance and Carcass Traits of Rabbits

Influence of Weaning Age and Dietary Βeta-Pro Fortification on Performance and Carcass Traits of Rabbits

Rabbit Growth, Carcass Characteristic, Digestion, Caecal Fermentation, Microflora, and Some Blood Biochemical Components Affected by Oral Administration of Anaerobic Probiotic (Zad®)

Response of Growing Rabbits to Stoking Density and Dietary Supplementation With Ascorbic Acid, and Vitamin E Under Summer Conditions

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