Marwa Shahat - Academia.edu (original) (raw)

Papers by Marwa Shahat

Research paper thumbnail of The effects of bee pollen on performance and economic efficiency of New Zealand White rabbits reared under high stocking density

Damanhour Journal of Veterinary Sciences

This study aimed to Test the hypothesis supplementation with bee pollen (BP), as a beneficial fee... more This study aimed to Test the hypothesis supplementation with bee pollen (BP), as a beneficial feed additive, could alleviate the detrimental effects of overcrowding on the productive and economic efficiency in growing rabbits. A total of eighty 30 day-old male NZW rabbits (561.7±8.3 g) were randomly allocated into to four groups (each of which replicated four times), of two stocking density 8 and 24 /m2. This corresponds to 2, 6 rabbits per cage. Groups were arranged as follow: control G1 (LSD; 2 rabbits/cage and no supplementation), G2(HSD; 6 rabbits/cage and no supplementation),G3(HSD-BP250; 6 rabbits/cage and 250mg/kg(BW) BP given orally), G4(HSD-BP500; 6 rabbits/cage and 500mg/kg(BW) BP given orally). Rabbits in HSD-BP500 group had significantly higher BW, BWG, lower FI and better FCR and FE than HSD-BP250and HSD groups. Rabbits in HSD-BP500 had significantly higher dressing out % and carcass weight than HSD-BP250and HSD groups. Significant increase in values of RBCs counts, Hb, PCV, WBCs, lymphocyte, heterophils % and decreased H/L ratio were detected in HSD-BP500 group compared to HSD and HSD-BP250 groups.. while, values of MCV and MCH were not significantly (P > 0.01) different among groups. The highest values of total protein, globulin and the lowest serum urea, creatinine, cholesterol, triglycerides, ALT and AST were observed in HSD-BP500 group. The highest values of total and net revenue and the best economical efficacy were obtained in HSD-BP500 group. Conclusively, from the obtained results It can be concluded that the supplementation of bee pollen at dose of 500mg/kg BW improved the performance parameters of NZW rabbits and increased farm profitability.

Research paper thumbnail of Impact of Stocking Density on Growth Performance, Carcass Traits, and Economic Feasibility of Growing Rabbits

A total of sixty, 4 week-old male New Zealand White (NZW) rabbits were used to explore the impact... more A total of sixty, 4 week-old male New Zealand White (NZW) rabbits were used to explore the impact of stocking density on the performance, carcass characteristics, blood biomarkers, and economic indices in growing rabbits. All animals were kept in wire cages (50 length x 50 width x 40 cm high) in groups of 2, 4, and 6 rabbits/cage (represented 8, 16, and 24 rabbits/m 2); each stocking density was replicated 5 times. A significantly lower body weight (1748.67, 1567.58 vs. 2017.83 g) and feed intake (5040.36, 4807.47 vs. 5107.41 g) with higher feed conversion (4.22, 4.77 vs. 3.53) were observed in rabbits stocked 16 and 24 rabbits/m 2 compared to 8 rabbits/m 2 , respectively (P < 0.01). No statistical variation (P > 0.05) was found in percentages of skin, full stomach, full intestine, head, and carcass parts under different stocking densities. However, a significantly lower dressing out and liver percentage (52.42 and 5.12 %, respectively) was recorded in rabbits stocked at 24 rabbits/m 2 than other groups (P < 0.001). Rabbits stocked at 24 rabbits/m 2 had the lowest values of RBCs counts, Hb, and PCV (P < 0.01). The levels of total protein, globulin, urea, and creatinine were significantly lower in the group of 24 rabbits/m 2 than those of 8 and 14 rabbits/m 2 (P < 0.05). The total and net revenue was significantly decreased and the cost-benefit ratio was increased from 0.61 to 0.77 as the number of rabbits increased from 8 to 24 rabbits/m 2 (P < 0.001). It can be concluded that high stocking density adversely affects rabbit performance and profitability.

Research paper thumbnail of The effects of bee pollen on performance and economic efficiency of New Zealand White rabbits reared under high stocking density

Damanhour Journal of Veterinary Sciences

This study aimed to Test the hypothesis supplementation with bee pollen (BP), as a beneficial fee... more This study aimed to Test the hypothesis supplementation with bee pollen (BP), as a beneficial feed additive, could alleviate the detrimental effects of overcrowding on the productive and economic efficiency in growing rabbits. A total of eighty 30 day-old male NZW rabbits (561.7±8.3 g) were randomly allocated into to four groups (each of which replicated four times), of two stocking density 8 and 24 /m2. This corresponds to 2, 6 rabbits per cage. Groups were arranged as follow: control G1 (LSD; 2 rabbits/cage and no supplementation), G2(HSD; 6 rabbits/cage and no supplementation),G3(HSD-BP250; 6 rabbits/cage and 250mg/kg(BW) BP given orally), G4(HSD-BP500; 6 rabbits/cage and 500mg/kg(BW) BP given orally). Rabbits in HSD-BP500 group had significantly higher BW, BWG, lower FI and better FCR and FE than HSD-BP250and HSD groups. Rabbits in HSD-BP500 had significantly higher dressing out % and carcass weight than HSD-BP250and HSD groups. Significant increase in values of RBCs counts, Hb, PCV, WBCs, lymphocyte, heterophils % and decreased H/L ratio were detected in HSD-BP500 group compared to HSD and HSD-BP250 groups.. while, values of MCV and MCH were not significantly (P > 0.01) different among groups. The highest values of total protein, globulin and the lowest serum urea, creatinine, cholesterol, triglycerides, ALT and AST were observed in HSD-BP500 group. The highest values of total and net revenue and the best economical efficacy were obtained in HSD-BP500 group. Conclusively, from the obtained results It can be concluded that the supplementation of bee pollen at dose of 500mg/kg BW improved the performance parameters of NZW rabbits and increased farm profitability.

Research paper thumbnail of Impact of Stocking Density on Growth Performance, Carcass Traits, and Economic Feasibility of Growing Rabbits

A total of sixty, 4 week-old male New Zealand White (NZW) rabbits were used to explore the impact... more A total of sixty, 4 week-old male New Zealand White (NZW) rabbits were used to explore the impact of stocking density on the performance, carcass characteristics, blood biomarkers, and economic indices in growing rabbits. All animals were kept in wire cages (50 length x 50 width x 40 cm high) in groups of 2, 4, and 6 rabbits/cage (represented 8, 16, and 24 rabbits/m 2); each stocking density was replicated 5 times. A significantly lower body weight (1748.67, 1567.58 vs. 2017.83 g) and feed intake (5040.36, 4807.47 vs. 5107.41 g) with higher feed conversion (4.22, 4.77 vs. 3.53) were observed in rabbits stocked 16 and 24 rabbits/m 2 compared to 8 rabbits/m 2 , respectively (P < 0.01). No statistical variation (P > 0.05) was found in percentages of skin, full stomach, full intestine, head, and carcass parts under different stocking densities. However, a significantly lower dressing out and liver percentage (52.42 and 5.12 %, respectively) was recorded in rabbits stocked at 24 rabbits/m 2 than other groups (P < 0.001). Rabbits stocked at 24 rabbits/m 2 had the lowest values of RBCs counts, Hb, and PCV (P < 0.01). The levels of total protein, globulin, urea, and creatinine were significantly lower in the group of 24 rabbits/m 2 than those of 8 and 14 rabbits/m 2 (P < 0.05). The total and net revenue was significantly decreased and the cost-benefit ratio was increased from 0.61 to 0.77 as the number of rabbits increased from 8 to 24 rabbits/m 2 (P < 0.001). It can be concluded that high stocking density adversely affects rabbit performance and profitability.