Mansoura University, Faculty of AgricultureJournal of Animal and Poultry Production2090-364212620210601Efficacy of Glucans on Growth Variables, Antioxidant Potential, and Immunity of Growing Rabbits17518017894110.21608/jappmu.2021.178941ENA. A.GabrDepartment of Animal Production, Faculty of Agriculture, Tanta University, 31527, Tanta, EgyptJournal Article20210621The goal of this study was to see how dietary -glucan (BG) supplementation affected growth performance, blood biochemicals, and antioxidant capacity in growing NZWrabbits. 75 NZW rabbit females, 6 weeks old, with an average live body weight of 845.3735.23 g. Rabbits were distributed into five experimental groups at random (fifteen rabbits in each group). The control group (G1) received only the basal diet, while the G2, G3, G4, and G5 groups received the basal diet supplemented with BG at 0.5,1.0,1.5, and 2.0 g/kg diet, respectively. Growth performance parameters, blood biochemical, and antioxidant enzymes, and immunity markers in the hepatic tissues were determined. Results show that all BG supplements developed (P<0.05) final weight, and gain without any effects on feed efficiency, and viability, and decreased (P<0.05) concentration of glucose, total cholesterol, and triglycerides. The effect of BG on serum activity of ALT and AST was not significant. Dietary BG supplementation increased (P<0.05) SOD, CAT, and GPx levels, and decreased (P<0.05) MDA levels in hepatic tissues. Percentage of NBT and ACP level increased (P<0.05) BG groups (G2-G5) in comparing with G1.The current study concludes that β-glucans represent a promising factor for improving antioxidant capacity, immunity, and lipid profile as well as promoting growth performance of growing rabbits, without adverse effects on liver and kidney function and protein metabolism.https://jappmu.journals.ekb.eg/article_178941_5054f04c741b35c2c7d59f54cd4b2444.pdfMansoura University, Faculty of AgricultureJournal of Animal and Poultry Production2090-364212620210601Effect of L-Arginine Supplementation in Ossimi Rams’ Diets on Biometry of Testes and Epididymis, Immune-Histochemical Expression and Characteristics of Epididymal Spermatozoa18118718266610.21608/jappmu.2021.182666ENAsmaa A.FathyAnimal Production Department, Faculty of Agriculture, Menoufia University, Egypt.E. A.AbdallaAnimal Production Research Institute, Agriculture Research Center, Giza, Egypt.Hanan A.GhoneimPhysiology Department, Faculty of Veterinary Medicine, Damnhour University, Damnhour, Egypt.Journal Article20210708This experiment was conducted to evaluate the impact of dietary L-arginine supplementation on some epididymal spermatozoa characteristics, differential White blood cells count, some reproductive organs'metrics. Fifteen adult Ossimi rams averaging 44.9± 0.57 kg were utilized, divided into three comparable groups (5 rams each) , were fed a basal ration supplemented with L- arginine at concentration of 0.0 (G1) or 0.5(G2) or 1.0%(G3) of body weight/day for two months. At the end of the study rams were slaughtered for conducting biometric studies on tests and epididymis and testicular Immunohistochemical NOS analysis. Epididymis Semen was collected and evaluated for motility, viability, abnormality and acrosome integrity.L-arginine Supplementation at 0.5(G2) or 1.0%(G3) significantly (P<0.05) improved epididymal spermatozoa characteristics, as % of motility, livability, acrosome integrity while, % of dead and abnormal spermatozoa decreased in supplemented groups as compared with G1. This improving was greatest in G2 than that happened in G3. Measurements of testes and epididymis increased in G2 and G3 compared with G1 . In addition, there was a significant increase of immunoexpression of testicular Nitric oxide synthase (NOS) in rams received L-arginine at 1% or 0.5% of body weight/day as compared to G1, and this expression was clearly found within the spermatid layer and few sertoli cells in both treated groups, while in G1, it was limited to spermatid layer only. . It could be concluded that dietary L- arginine supplementation to Ossimi ram ration has positive effects on epididymal spermatozoa characteristics, Sexual organs anthropometries and immunohistochemical expression of testicular NOS.https://jappmu.journals.ekb.eg/article_182666_ecdc95246dedd6bc13616aea71d22bbe.pdfMansoura University, Faculty of AgricultureJournal of Animal and Poultry Production2090-364212620210601Effect of Using Biogen as a Feed Additive on Productive and Reproductive Performance of Rabbits18919618267410.21608/jappmu.2021.182674ENH. N.FahimRabbit, Turkey and Water-Fowl Breeding Research Department. Animal and Poultry Production Research Institute (APRI), Agricultural Research Center, Ministry of Agriculture, Dokki, Giza, Egypt.M. M.El-DeebAnimal Nutrition Dept., Animal Production Res. Inst., Agric. Res. Center, Ministry of Agric., Dokki, Giza, Egypt.Mona A.RagabRabbit, Turkey and Water-Fowl Breeding Research Department. Animal and Poultry Production Research Institute (APRI), Agricultural Research Center, Ministry of Agriculture, Dokki, Giza, Egypt.Soheir A.ShazlyPoultry Research Department, Animal and Poultry Production Research Institute (APRI), Agricultural Research Center, Ministry of Agriculture, Dokki, Giza, Egypt.Journal Article20210708This study was conducted to evaluate the effect of using biogen in V-line rabbit diets on its productive and reproductive performance. Twenty eight rabbits (16 does of 10 months' age averaged 3325 ± 122 g and 12 bucks of 11 months' age averaged 3440 ± 268 g live body weight were randomly assigned to four groups and fed <em>ad libitum</em> as follows: T<sub>1</sub>; Basal diet (Control), T<sub>2</sub>, T<sub>3</sub> and T<sub>4</sub>: Basal diet plus 0.5, 0.75 and 1 g biogen/Kg diet, respectively. Results showed that doe's in T<sub>3</sub> and T<sub>4</sub> gave better results for number of services per conception, litter size at weaning, litter weight, bunny weight and daily gain at birth and weaning. Mortality rate generally decreased than the control (T<sub>1</sub>) and T<sub>2</sub>. Parturition interval non-significantly decreased, with the lowest period being recorded for T<sub>2</sub>. Total feed intake/parity showed significant (P<0.05) increase in biogen groups. Biogen in bucks' diets significantly (P<0.05) improved semen quality traits.Biogen significantly (P<0.05) increased hemoglobin, white blood cells, monocytes % and eosinophils % compared to the control. While red blood cells, hematocrit %, lymphocytes % and neutrophils were not significantly differed among groups. Biogen significantly (P<0.05) increased serum total protein, globulin and total cholesterol, whil significantly (P<0.05) reduced triglycerides, but non-significantly albumin and creatinine. Biogen (T<sub>3</sub> and T<sub>4</sub>) improved the relative economic efficiency by 28.39 and 23.50%.In conclusion, 0.75 g biogen/Kg diet improved productive and reproductive performance of does and bucks and enhanced blood constituents as well as economic efficiency.https://jappmu.journals.ekb.eg/article_182674_c4cc005a6041ce481370054227087b0c.pdfMansoura University, Faculty of AgricultureJournal of Animal and Poultry Production2090-364212620210601Effect of Partially Substitution of Soybean Protein with Azolla (Azolla pinnata) on Productive Performance and Carcass Traits of Growing Rabbits19720318267810.21608/jappmu.2021.182678ENM. M.El-DeebAnimal Nutrition Dept., Animal Production Res. Inst., Agric. Res. Center, Ministry of Agric., Dokki, Giza, Egypt.H. N.FahimRab., Turk. and Water-Fowl Breed Research Dept. Anim. Prod. Res. Institute, Agric. Res. Center, Minis. of Agric. Dokki, Giza.Soheir A.Shazlypoultry Research Dept. Anim. Prod. Res. Institute, Agric. Res. Center, Minis. of Agric. Dokki, Giza.Mona A.RagabRab., Turk. and Water-Fowl Breed Research Dept. Anim. Prod. Res. Institute, Agric. Res. Center, Minis. of Agric. Dokki, Giza.A. M.AlazabRab., Turk. and Water-Fowl Breed Research Dept. Anim. Prod. Res. Institute, Agric. Res. Center, Minis. of Agric. Dokki, Giza.M. M.Besharapoultry Research Dept. Anim. Prod. Res. Institute, Agric. Res. Center, Minis. of Agric. Dokki, Giza.Journal Article20210708The present experimental work investigated partially substituting soybean protein with different levels of dried Azolla' effect on productive performance, carcass traits and economic efficiency of growing rabbits. A number of 36 local Black Balady rabbits, 5 weeks' old were weighed and divided into four equal groups (3 replicates each). The 1<sup>st</sup> group fed a basal diet (without Azolla), while the 2<sup>nd</sup>,3<sup>rd</sup> and 4<sup>th</sup> groups were fed diets contained 20, 30 and 40%, respectively dried Azolla substituted for soybean protein. All Azolla diets resulted in the highest (P<0.05) final body weight values at 14 weeks' age over the control. Weight gain from 5 to 14 weeks' age took the same trend. No significant alternations of dietary Azolla levels was noticed on feed intake, feed conversion ratio and performance index. Viability percentage recorded the highest percent for group fed 30% Azolla compared with the control. Rabbits fed Azolla at 20 and 30% of soybean protein recorded lower serum cholesterol values than the control. The different levels of Azolla, especially 10.08% Azolla (40% of soybean protein) resulted in improving serum HDL. Most blood hematology traits were not affected by dietary Azolla inclusion in the rabbits' diets. Carcass traits were not influenced by different levels of Azolla substitution. Conclusively, the inclusion of dried Azolla substitution up to 40% of soybean protein in the diet of growing rabbits positively affected growing rabbits' productive performance and had no adverse influence on blood biochemical and carcass traits under Egyptian environmental condition.https://jappmu.journals.ekb.eg/article_182678_14f9c4f9a20a996e2408197319b7976e.pdf