Published Scientific Research Papers

Prof. Dr. Mohamed Atef Helal

Elmaghraby, M.M.A.; Helal, M.A. and El-Sheikh, A.I. (2004): Maximum number of kits a rabbit doe should nurse for optimum litter performance up to weaning. Proceedings of the 4th Scientific Conference for Veterinary Medical Researches. Faculty Of Veterinary Medicine, Alexandria University. PP 658 –672

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Mandour, M.A.; F. A. Abdel Ghany; Helal, M.A. (2007): Studies on some economic traits of two Egyptian chicken strains subjected to vaccination against Infectious Bursal Disease Virus (IBDV). Proceedings of the 4thWorld's Poultry Conference, March 27-30-2007, Sharm El-Sheikh, Egypt. PP 655-669

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Byomi, A.M.; Helal, M.A. and Daoud, A. (2008):Effect of lighting programs on the performance and carcass quality of broilers.Proceedings of the 8thScientific Conference of the Egyptian Veterinary Poultry Association, March 10-13-2008, Dokki, Cairo, Egypt. PP 209-215

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Helal, M.A.(2008): Effect of egg storage time on internal egg quality, egg weight, hatchability embryonic mortality and subsequent growth performance in Japanese quail. Minufiya Vet. J., 5: 775-781

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Helal, M.A.(2008):Effect of Breeder Age, Genetic Strain and Season of Hatch on Broiler Performance.  Minufiya  Vet. J.,5:83-794

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Helal, M. A; A. M. Byomi; I. A. Mostafa (2008): Economic analysis of productive efficiency of layer farms in different housing systems. Proceedings of the5thScientific Conference of the Faculty of Veterinary Medicine, Menufiya University, April 2008. PP: 619-626

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Helal, M. A; A. M. Byomi (2008): Effect of Air Velocity on Performance and Some Hematological Parameters of Broilers. Proceedings of the5thScientific Conference of the Faculty of Veterinary Medicine, Menufiya University, April 2008. PP: 611-626

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Gaafar, K., S.I. Fathalla and M.A. Helal(2009): Effect of feeding low protein L-lysine and DL-Methionine-supplemented diets on the growth performance and carcass characteristics of broilers. 2ndscientific conference of the faculty of Vet. Med. Kafr El-Sheikh Univ.

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Hamada D.H. Mahboub; Mohamed A.Y. Helal;Ahmed M. Bayomi and I. Mostafa (2010) Effect of Galactophagia, Breed, Housing System and Parity on Some Productive and Reproductive Traits and Udder Health of Dairy Cows and Egyptian Buffaloes. Minufiya Veterinary journal, 7 (3): 457-365.

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Mahboub H.D.H., Ragab A. Darwish, Sameh G. R., Mohamed A. H.andK.M. Gafar (2011) The effect of protected fat and selenium-vitamin E

supplementation during late pregnancy on performance of local Egyptian goat breeds and survival of their kids. 11thSci. Cong., Egyptian Society for Cattle Diseases, Luxor, Egypt.

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Sameh, G.A.R.; Hamada, D.H. Mahboub; Mohamed, A., Helaland Khalid M. Gaafar (2013) Behaviour, Welfare and Performance of Broiler Chicks reared on different Litter Materials. Assiut Vet. Med. J., 59 (138): 9-18.

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Hamada D.H. Mahboub, Sameh, G.A.R.; Ragab A. Darwish, Mohamed A. Helal, Khalid M. Gafaar and Tarek A.M. Ashmawy (2013) Fish oil supplementation and selenium-vitamin E injection of Egyptian sheep and their Finnish Landrace crossbred during late pregnancy: 2. Lambs response. Assiut Vet. Med. J., 59 (138): 60-73.

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Mohamed A.Y. Helal, Hamada D.H. Mahboub, Shaaban A. Hemeda, Salah S. ElBallal, Hanim S. Heikal (2014): Polymorphism of Bone Morphogenetic Protein Receptor-IB (BMPR-IB) Gene with Litter Size and Kids Growth of Some Goat Breeds in Egypt. Alexandria Journal of Veterinary Sciences 2014, 41: 28-34

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Darwish R. A.,Mohamed A. Y. Helal, and Elsakhawy S.F., Bieder I. Elsaeide (2014): Maternal and neonatal responses to shearing of Landrace X Rahmanicrossbred ewes at different stages of pregnancy.8thScientific conference of Faculty of Veterinary Medicine, University of Sadat City.

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Abdel-Azeem, F.A., Shamma, T.A., Helal, M.A.Y. and Diab, T.M. (2016): Productive performance, physiological and immunological responses of Japanese quail as affected byintermittent lighting programs. Proceedings of the 9thInternational poultry conference. November 7-10-2016, Hurghada, Red Sea Egypt. PP:29

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Hamada Dahy Mahboub, Mohamed A. Helal, Mabrouk Attia Abd Eldaim, Emad Mahmoud Abd El-Razek & Ahmed Mohamed Elsify (2013) Seroprevalence of Abortion Causing Agents in Egyptian Sheep and Goat Breeds and Their Effects on the Animal’s Performance. Journal of Agricultural Science; 5 (9), 92-101

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Hamada D.H. Mahboub, Emad M. Abd El-Razek, Ragab A. Darwish, Mohamed A.Y. Helaland Ibrahim A. Mostafa (2013) Effects of Breed and Prostaglandin Administration on Reproductive Performance and Profitability of Egyptian Ewes. Theriogenology Insight, 3(2): 95-106.

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Hamada D.H. Mahboub, Sameh, G.A.R.; Mohamed A.Y. Helal and Enas A.K. Aziz (2013) Effect of Maternal feeding in Late Pregnancy on Behaviour and Performance of Egyptian Goat and Sheep and Their Offsprings. Global Veterinaria, 11 (2): 168-176

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Abdel-Rahman, H.A.; Fathallah, S. I.;Mohamed A. Y. Helal, Nafeaa, A.A.; Zahran I.S. (2014):Effect of turmeric (Curcuma longa), fenugreek (Trigonella foenum-graecum L.) and/or bioflavonoid supplementation to the broiler chicks diet and drinking water on the growth performance and intestinal morphometeric parameters.Global Veterinaria 12 (5): 627-635

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Abou-elkhairR, Gaafar, K.M., Elbahy, N.M., Helal M.A., Mahboub H.D. and Gad, S. (2014): Bioactive Effect of Dietary Supplementation with Essential Oils Blend of Oregano, Thyme and Garlic oils on Performance of Broilers Infected with Eimeria species. Global Veterinaria 13 (6): 977-985, 2014

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Dawod A., Helal M.A., Mahboub H.D. (2014): Effect of Prepartum Body Condition Score on Dairy Cattle Performance. Research and Reviews: Journal of Dairy Science and Technology Volume 3, Issue 2 ISSN: 2319-3409 (online), ISSN: 2349-3704(print)

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Dawod A., Helal M.A., Mahboub H.D. and Byomi A.M. (2014): Transition Management System, Prepartum BCS, and Dairy Cattle Performance. Research & Reviews: Journal of Veterinary Science and Technology Volume 3, Issue 3 ISSN: 2319-3441 (online), ISSN: 2349-3690 (print)

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Ahmed I. A, Helal M. A, Ramadan S. G, Mahboub H.D, Byomi A. M and Reddy P.G (2014): Risk Factors Associated with Galactophagia and Its Impacts on Some Productive and Reproductive Traits in Dairy Cows and Buffaloes. Research and Reviews: Journal of Dairy Science and Technology Volume 4, Issue 2 ISSN: 2319-3409(online), ISSN: 2349-3704(print)

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Abd Eldaim M. A., Gaafar, K.M., Darwish R.A., Mahboub H.D. and Helal M.A.(2015): Prepartum vitamin A supplementation enhances goat

doe health status and kid viability and performance. Small Ruminant Research 129: 6–10.

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El Afandi G., Morsy M., Selim A and Helal M.A. (2017):Modeling Rift Valley Fever over Egypt in Relation to Weather Conditions. International Journal of Biological Sciences and Applications 4(1): 7-13

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Sallam M., Ramadan S., Helal M., and Mahboub H. (2017): Effects of Organic Minerals Mixture Supplementation on Performance and Immune Status of Goats and Their Kids. International Journal of Biological Sciences and Applications 4(4): 33-37.

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Ramadan S., Mahboub H., Helal M., and SallamM. (2018): Effect of Vitamin E and Selenium on Performance and Productivity of Goats. International Journal of Biological Sciences and Applications 4(2): 16-22.

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Abeer F EL NAHAS, Shymaa S BELAL, Shawky MAHMOUD, Mohamed A HELAL and Ahlam E YONIS (2018):Survey on the Presence of the Mx and MHC Resistance Alleles to Avian Influenza Virus Infection Compared with its Outbreaks Among Chicken Breeds in Egypt. Kafkas Univ. Vet. Fak. Derg.

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Sahar H. El-Nagar, Mohamed A. Helal, Shawky Mahmoud, Leanne Dillard(2019):Comparative Histopathological Changes of Liver, Kidney and Appendix of Rabbits Treated with Inorganic Nano Chromiumto Ameliorate Heat Stress Effect. Slov Vet Res 2019; 56 (Suppl 22): 399–408.

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Nasema M Elkatatny, Abeer F. El Nahas, Mohamed A Helal, and Hanan A Fahmy (2020): The impacts of seasonal variation on the immune status of Nile tilapia larvae and their response to different immunostimulants feed additives. Fish & Shellfish Immunology Volume 96, January 2020, Pages 270-278

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Dr. Seham Mohammed Khalil ELkassas

Seham El-Kassas, Safaa E Abdo, Karima El-Naggar, Walied Abdo, Abeer AK Kirrella, Ibrahim El-Mehaseeb , Mohammed Abu El-Magd (2020). Dietary Supplementation with Copper Oxide Nanoparticles Ameliorates Chronic Heat Stress in Broiler Chickens. Journal of Animal Production Science. https://www.publish.csiro.au/AN/justaccepted/AN18270

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Afaf D Abdel?Mageid, Abeer Gamal Zaki, Yakout A El Senosi, Hanan A Fahmy, Amel M El Asely, Haitham G Abo?Al?Ela, Seham El?Kassas (2020). Modulatory effect of lipopolysaccharide on immune?related gene expression and serum protein fractionation in grey mullet, Mugil cephalus. Aquaculture Research. (in-press) https://doi.org/10.1111/are.14510

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Afaf D Abdel?Mageid, Abeer Gamal Zaki, Yakout A El Senosi, Amel M El Asely, Hanan A Fahmy, Seham El?Kassas, Haitham G Abo?Al?Ela (2020). The extent to which lipopolysaccharide modulates oxidative stress response in Mugil cephalus juveniles. Aquaculture Research 51 (1), 426-431

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Abdel-Hay Abdel-Hay, Sara Hamed, Mohamed Zayd, Fatma Abouelenien, Ibrahim Rehan, Seham El-Kassas, Amany Deyab, Radi Mohamed (2019). NIGHT FEEDING REGIME IMPROVES WATER QUALITY, GROWTH PERFORMANCE AND FEEDING BEHAVIOUR OF EUROPEAN EELS, Anguilla. Slovenian Veterinary Research Vol 56, Suppl 22

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Mostafa A Elmadawy, Seham El-Kassas, Safaa E Abdo, Atsushi Nagai, Yasuo Bunai (2019). Genetic Diversity Among Two Common Populations Of Canis Lupus Familiaris In Egypt By Using Mitochondrial Dna Hvr1 Sequence. Slovenian Veterinary Research Vol 56, Suppl 22.

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KarimaEl-Naggar, SehamEl-Kassas, Safaa E.Abdo, Abeer A.K.Kirrella, Rasha A.Al wakeel (2019). Role of gamma-aminobutyric acid in regulating feed intake in commercial broilers reared under normal and heat stress conditions. Journal of Thermal Biology. Volume 84, August 2019, Pages 164-175.

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Seham El-Kassas, Safaa E Abdo, Karima El-Naggar, Walied Abdo, Abeer AK Kirrella, Toufic O Nashar (2018). Ameliorative Effect of Dietary Supplementation of Copper Oxide Nanoparticles on Inflammatory and Immune Reponses in Commercial Broiler under Normal and Heat-Stress Housing Conditions. Journal of Thermal Biology. Volume 78, December 2018, Pages 235-246. https://doi.org/10.1016/j.jtherbio.2018.10.009

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AF El-Nahas, WM Basiony, S El-Kassas, and S Mahmoud (2018). Variation in the Genetic Effects of ABCG2, Growth Hormone and Growth Hormone Receptor Gene Polymorphisms on Milk Production Traits in Egyptian Native, Holstein and Hybrid Cattle Populations. Pakistan Veterinary Journal ISSN: 0253-8318 (PRINT), 2074-7764 (ONLINE) DOI: 10.29261/pakvetj/2018.089

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Safaa Abdo, Seham El-Kassas*, Abeer El Nahas, and Shawky Mahmoud (2017). Modulatory Effect of Monochromatic Blue Light on Heat Stress Response in Commercial Broilers. Oxidative Medicine and Cellular Longevity, Volume 2017 (2017), Article ID 1351945, 13 pages https://doi.org/10.1155/2017/1351945

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El-Kassas S, Odemuyiwa S, Hajishengallis G, Connell TD, Nashar TO (2016) Expression and Regulation of Cholecystokinin Receptor in the Chicken’s Immune Organs and Cells. J Clin Cell Immunol 7: 471. doi:10.4172/2155-9899.1000471

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El-Kassas, S., Faraj, R., Martin, K., Hajishengallis, G., Connell, T. D., and Nashar, T., 2015. Cell clustering and delay/arrest in T-cell division implicate a novel mechanism of immune modulation by E. coli heat-labile enterotoxin B-subunits. Cellular Immunology. pp. 150-162.

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Radi Mohamed, Sherif ElKholya, Mustafa Shukry, El-Kassas S, Nagham Saidy (2017) Manipulation of Broiler Growth Performance, Physiological and Fear Responses Using Three Monochromatic LED lights. Alexandria Journal of Veterinary Sciences (AJVS). Vol. 53: 57-62. April 2017.DOI: 10.5455/ajvs.263048

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Dr. Safaa Elsayed Mohamed abdo

Abdo, S.E., El-Kassas, S., El-Nahas, A.F., Mahmoud, S., 2017. Modulatory effect of monochromatic blue light on heat stress response in commercial broilers. Oxidative Med. Cell. Longev. 13. https://doi.org/10.1155/2017/1351945.

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El-Kassas, S., Abdo, S.E., El-Naggar, K., Abdo, W., Kirrella, A.A.K., Nashar, T.O., 2018. Ameliorative effect of dietary supplementation of copper oxide nanoparticles on inflammatory and immune reponses in commercial broiler under normal and heatstress housing conditions. J. Therm. Biol. 78, 235–246. https://doi.org/10.1016/j. jtherbio.2018.10.009.

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El-Kassas, S., El-Naggar, K., Abdo, S.E., Abdo, W., Kirrella, A.A.K., El-Mehaseeb, I. Abu El-Magd, M., 2020. Dietary supplementation with copper oxide nanoparticles ameliorates chronic heat stress in broiler chickens. Animal Production Science. 60 (2), 254-268. https://doi.org/10.1071/AN18270.

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El-Naggar, K., El-Kassas, S., Abdo, S.E., Abdo, W., Kirrella, A.A.K., Al wakeel, R.A., 2019. Role of gamma-aminobutyric acid in regulating feed intake in commercial broilers reared under normal and heat stress conditions. J. Therm. Biol. 84, 164-175.  https://doi.org/10.1016/j.jtherbio.2019.07.004.

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Dawood MA, Moustafa EM, Gewaily MS, Abdo SE, AbdEl-kader MF, SaadAllah MS, Hamouda AH,2020. Ameliorative effects of Lactobacillus plantarum L-137 on Nile tilapia (Oreochromis niloticus) exposed to deltamethrin toxicity in rearing water. Aquat Toxicol 105377. https://doi.org/10.1016/j.aquatox.2019.105377.

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Saleh, A. A.; Kirrella, A. A.; Abdo, S. E.; Mousa, M. M.; Badwi, N. A.; Ebeid, T. A.; Nada, A. L.; and Mohamed, M. A., 2019. Effects of dietary xylanase and arabinofuranosidase combination on the growth performance, lipid peroxidation, blood constituents, and immune response of broilers fed low-energy diets. Anim., 9(7): 467. https://doi.org/10.3390/ani9070467.

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Dawood MA, Abdo SE, Gewaily MS, Moustafa EM, SaadAllah MS, AbdEl-kader MF, Hamouda AH, Omar,A.A, Al wakeel, 2020.The influence of dietary β-glucan on immune, transcriptomic, inflammatory and histopathology disorders caused by deltamethrin toxicity in Nile tilapia (Oreochromis niloticus). Fish & Shellfish Immunology. 98, 301-311. https://doi.org/10.1016/j.fsi.2020.01.035

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MA Elmadawy, S El-Kassas, SE Abdo, A Nagai, Bunai Y.2019. Genetic diversity among two common populations of canis lupus familiaris in egypt by using mitochondrial dna hvr1 sequence. Slov Vet Res. 56 (22), 75–85. DOI 10.26873/SVR-745-2019.

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Dawood MA, AbdEl-kader MF, Moustafa EM, Gewaily MS, Abdo SE,. 2020.Growth performance and hemato-immunological responses of Nile tilapia (Oreochromis niloticus) exposed to deltamethrin and fed immunobiotics. Environ Sci Pollut Res. 1-10. https://doi.org/10.1007/s11356-020-07775-8

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Dr. Sahar Hamdy Mohammed Ahmed Elnaggar

Sahar H. El-Nagar, Mohamed M. Sharaf, Shawky Mahmoud, Heba, A. Basha. (2016): Effect of Selection of Japanese Quails for Rapid Growth on Immune Function. Alexandria Journal of Veterinary Sciences, 49: 85-90.

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Sahar H. El-Nagar, Mohamed A. Helal, Shawky Mahmoud, Leanne Dillard. (2019). Comparative Histopathological Changes Of Liver, Kidney And Appendix of Rabbits Treated with Inorganic Nano Chromium to Ameliorate Heat Stress Effect. Slov Vet Res 2019; 56 (Suppl 22): 399–408

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