1. Zeitoun, M.M., M.A. Ali and A.O. El-Dawas, 2020. Induction of twinning in noemi ewes using two protocols of a recombinant human follicle stimulating hormone versus porcine pituitary-derived FSH and their subsequent impacts on maternal hormones. Maced. Vet. Rev., 43: 111-123.
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2. Zeitoun, M.M., A.O. El-Dawas, M.A. Ateah and M.A.S. El-Deen, 2020. Consequences of twinning induction to noemi ewes by a recombinant human follicle-stimulating hormone compared with pituitary-derived porcine follicle-stimulating hormone on follicular dynamics, maternal biochemical attributes, and neonatal traits. Vet. World, 13: 633-641.
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3. Zeitoun, M.M., A.A. Al-Ghoneim, K.A. Al-Sobayil, Y.R. Hassanein and M.M. Mansour et al., 2019. L-arginine supplementation alters maternal blood biochemical attributes and milk composition relative to neonatal traits of Najdi Ewes. Open J. Anim. Sci., 9: 341-354.
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4. Sallam, S.M.A., M.M.H. Khalil, M.F.A. Attia, H.M. El-Zaiat, M.G. Abdellattif, H.M. Abo-Zeid and M.M. Zeitoun, 2019. Utilization of blue panic (Panicum antidotale) as an alternative feed resource for feeding Barky sheep in arid regions. Trop. Anim. Health Prod., (In Press). 10.1007/s11250-019-01963-6.
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5. Sallam S.M.A., F.A.A. Marwa, A.N.M. Nour El-Din, S.Z. El-Zarkouny, A.M. Saber, H.M. El-Zaiat and M.M. Zeitoun, 2019. Involvement of Quebracho tannins in the diet alters productive and reproductive efficiency of postpartum buffalo cows. Ani. Nutr. J., 5: 80-86.
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6. Marwa, F.A. Attia, M.E.A. Nasser, M.M. Zeitoun, M.N. El-Gendy, K.A. El-Shazly and S.M.A. Sallam, 2018. In vitro ruminal and post-ruminal protein digestion of some Egyptian tanniniferous plants. J. Food. Agri. Environ., 16: 100-107.
7. Derar, D.R., A. Ali, M.M. Zeitoun and F. Al-Sobayil, 2018. Azoospermia in male dromedary: Clinical findings, testicular biopsy, serum follicle stimulating hormone and seminal biomarkers. Ani. Reprod. Sci., 199: 24-29.
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8. Ali, A., D.R. Derar, M.M. Zeitoun and F. Al-Sobayil, 2018. Impotentia generandi in male dromedary camels: FSH, LH and testosterone profiles and their association with clinical findings and semen analysis data. Theriogenology, 120: 98-104.
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9. Abdel-Salam, A.M., W.A. Al Hemaid, A.A. Afifi, A.I. Othman, A.R.H. Farrag and M.M. Zeitoun, 2018. Consolidating probiotic with dandelion, coriander and date palm seeds extracts against mercury neurotoxicity and for maintaining normal testosterone levels in male rats. Toxicol. Rep., 5: 1069-1077.
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10. Zeitoun, M.M., K.M. El-Azrak, M.A. Zaki, B. Nemat-Allah and E.E. Mehana, 2017. Consequences of environmental stressors on hematological parameters, blood glucose, cortisol and phagocytic activity of Nile Tilapia fish. J. Agric. Ecol. Res. Int., 10: 1-11.
11. Zeitoun, M.M., 2017. Is L-arginine or glucose dependence required for fetal growth, survival and maternal progesterone during late pregnancy in ewes? Int. J. Anim. Res., 1: 1-11.
12. Sallam, S.M.A., M.N. El-Gendy, M.M. Anwar, W.G. Fahmy and S.Z. El-Zarkouny et al., 2017. Productive and reproductive traits of sheep fed Acacia saligna leaves-based diets. Int. J. Environ. Agric. Biotechnol., 2: 2829-2840.
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13. Mansour, M.M., M.M. Zeitoun and F.M. Hussein, 2017. Mastitis outcomes on pre-ovulatory follicle diameter, estradiol concentrations, subsequent luteal profiles and conception rate in buffaloes. Anim. Reprod. Sci., 181: 159-166.
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14. El-Mehanna, S.F., M.M. Abdelsalam, N.M. Hashem, K.E.M. El-Azrak, M.M. Mansour and M.M. Zeitoun, 2017. Relevance of probiotic, prebiotic and synbiotic supplementations on hemato-biochemical parameters, metabolic hormones, biometric measurements and carcass characteristics of sub-tropical Noemi lambs. Int. J. Anim. Res., 1: 10-22.
15. Derar, D., A. Ali, M. Tharwat, F. Al-Sobayil and M.M. Zeitoun, 2017. Erectile dysfunction in male Dromedary camels: Clinical findings and changes in the nitric oxide metabolite, cardiac troponin I and testosterone concentrations. Theriogenology, 89: 201-205.
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16. Ali, M. and M.M. Zeitoun, 2017. Privilege of Gum Arabic inclusion in semen extender compared with egg yolk on the Herri ram's subsequent fertility outcomes. Int. J. Anim. Res., Vol. 1. 10.28933/ijar-2017-10-2401.
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17. Zeitoun, M.M., K.E.D.M. El-Azrak, M.A. Zaki, B.R. Nemat-Allah and E.S.E. Mehana, 2016. Effects of ammonia toxicity on growth performance, cortisol, glucose and hematological response of Nile Tilapia (Oreochromis niloticus). Aceh J. Anim. Sci., 1: 21-28.
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18. Zeitoun, M., A. Al-Ghoneim, K. Al-Sobayil and S. Al-Dobaib, 2016. L-arginine modulates maternal hormonal profiles and neonatal traits during two stages of pregnancy in sheep. Open J. Anim. Sci., 6: 95-104.
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19. Mansour, M.M., A.O. Hindawy and M.M. Zeitoun, 2016. Effect of mastitis on luteal function and pregnancy rates in buffaloes. Theriogenology, 86: 1189-1194.
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20. Attia, M.F., A.N.N. El-Din, S.Z. El-Zarkouny, H.M. El-Zaiat, M.M. Zeitoun and S.M. Sallam, 2016. Impact of Quebracho tannins supplementation on productive and reproductive efficiency of dairy cows. Open J. Anim. Sci., 6: 269-288.
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21. Ali, M. and M.M. Zeitoun, 2016. Effectiveness of a recombinant human FSH on the ovarian follicles, peripheral progesterone and estradiol-17β and pregnancy rate of dairy cows under hot climate. Vet. World, 9: 699-704.
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22. Ali, A., D. Derar, M. Tharwat, M.M. Zeitoun and F.A. Al-Sobyil, 2016. Dystocia in dromedary camels: Prevalence, forms, risks and hematobiochemical changes. Anim. Reprod. Sci., 170: 149-156.
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23. Ali, A., D. Derar, F.A. Al-Sobyil, M.M. Zeitoun and A. Al-Howas, 2016. Phimosis in male dromedary camels: Clinical findings and changes in the hemogram, nitric oxide metabolites and testosterone concentrations. Theriogenology, 85: 1576-1581.
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24. Zeitoun, M.M., I.S. Salem and S.M. Ahmed, 2015. Evaluation of the male and female sex steroid hormones residues in eggs, milk and their products in Alqassim region. J. Agric. Vet. Sci., 8: 27-35.
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25. Zeitoun, M.M. and S.N. Al-Dobaib, 2015. Manipulating oils in ruminants feedstuffs for better human health: An update. Open J. Biomed. Life Sci., 1: 16-27.
26. Zeitoun, M.M. and M.A. Al-Damegh, 2015. Effect of nonenzymatic antioxidants on sperm motility and survival relative to free radicals and antioxidant enzymes of chilled-stored ram semen. Open J. Anim. Sci., 5: 50-58.
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27. Mehana, E.E., M.M. Zeitoun and M.A. Alnassar, 2015. Chitinolytic enzymes, classification and applications: An overview. J. Agric. Vet. Sci., 8: 97-110.
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28. Zeitoun, M.M. and E.S.E. Mehana, 2014. Impact of water pollution with heavy metals on fish health: Overview and updates. Global Veterinaria, 12: 219-231.
29. Zeitoun, M., M. Farahna, K.Al-Sobayil and A. Abdel-Salam, 2014. Impact of the aqueous extract of dandelion, probiotic and their synbiotic on male lamb's testicular histopathology relative to semen characteristics. Open J. Anim. Sci., 4: 23-30.
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30. Zeitoun, M. and A.R. Alsoqeer, 2014. Detection of sex steroid hormones in alfalfa and some rangeland native species in Saudi Arabia and their subsequent effects on camel reproduction. Global Veterinaria, 13: 33-38.
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31. Atieh, M.A., M.M. Zeitoun, M.M. Abdelsalam and K.A. Al-Sobayil, 2014. Breed differences in the placental morphometric parameters of the normally pregnant dromedary she camels relative to neonatal traits in Saudi Arabia. J. Vet. Sci., 115: 350-355.
32. Al-Damegh, M.A., M.M. Zeitoun and A.M. Abdel-Salam, 2014. The role of fermented milk containing probiotic, dandelion as prebiotic or their combination on serum metabolites, enzymes, testosterone and testicular histopathology of arsenic-intoxicated male rats. J. Basic Applied Sci., 10: 492-503.
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33. Abdelsalam, M.M., M.M. Zeitoun, M.A. Ateah, A. Al-Hassan and A.M. Abdel-Salam, 2014. Impact of probiotic fermented milk, palm date extract and their mixture supplementation on neonatal traits and hematological parameters of late pregnant najdi ewes. Int. J. Biol. Chem., 8: 37-47.
34. Abdel-Salam, A.M., M.M. Zeitoun and M.M. Abdelsalam, 2014. Effect of synbiotic supplementation on growth performance, blood metabolites, insulin and testosterone and wool traits of growing lambs. J. Biol. Sci., 14: 292-298.
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35. Abdel-Salam, A.M., E.S.I. El-Agamy, M.M. Zeitoun, F. Mohammed and H.M. Mousa, 2013. Immunoprophylactic and protective effects of symbiotic fermented mare's milk against mercury toxicity in rats. J. Food Technol., 105: 171-178.
36. Zeitoun, M.M. and S.M. Ahmed, 2011. Effect of cooking method on the residues of natural sex steroid hormones in local and imported meats and meat products in Al-Qassim region. J. Agric. Vete. Sci., 4: 83-92.
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37. Khalil, M.H., K.M. Mohamed, A.M. Al-Saef, M.M. Zeitoun and M.F. El-Zarei, 2010. Crossbreeding components for growth, carcass and meat composition traits in crossing Saudi Aradi with Damascus goats. Small Rumin. Res., 94: 10-16.
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38. Al-Sobayil, K.A., M.M. Zeitoun and A.M. Abdel-Salam, 2010. Effectiveness of a functional synbiotic syrup on pregnancy rate, neonatal birth weight and progesterone profile of oestrous-synchronized Najdi ewes. J. Food Agric. Environ., 8: 80-85.
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39. Zeitoun, M.M. and K.A. Al-Sobayil, 2009. Optimization of sexual desire and method of semen collection, processing and preservation of Najdi rams. Egypt. J. Androl. Reprod., 1: 92-103.
40. Ahmed, H.E.S., M.E. El-Sabeiy, S.H. Rawia and M.M. Zeitouny, 2009. Effect of clomipramine hydrochloride on semen quality and biochemical parameters of rabbits. Egypt. Poult. Sci. J., 28: 925-937.
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41. Al-Sobayil, K.A., M.M. Zeitoun, M.H. Khalil and A.M. Abdel-Salam, 2008. Effect of oral administration of a functional synbiotic syrup on libido, semen characteristics, serum testosterone and liver and kidney function of goat's bucks. Asian J. Biol. Sci., 1: 11-18.
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42. Zeitoun, M.M., A.Z. Fathelbab, E.I. El-Agamy and I.Y. Zween, 2004. GnRH surpasses PGF2α in maintaining normal fetal development in subfertile female rabbits. Proceedings of the 16th Annual Congress of the Egyptian Society for Animal Reproduction and Fertility, January 25-29, 2004, Aswan, Egypt, pp: 115-126.
43. Yousef, M.I., M.M. Zeitoun, K.E.A. Zeinab and A.F.M. Ibrahim, 2004. Growth performance and physiological responses of male rabbits as influenced by drinking saline well water. J. King Saud Univ. Agric. Sci., 16: 103-115.
44. Yousef, M.I., M.M. Zeitoun, K.E.A. Zeinab and A.F.M. Ibrahim, 2003. Effect of drinking saline well water on blood testosterone, seminal plasma enzymes and reproductive performance of rabbits. Egypt. J. Androl. Reprod., 17: 67-78.
45. Zeitoun, M.M., 2002. Effect of physiological status of buffalo ovaries on progesterone and biochemical constituents in follicular fluids. Alexandria J. Agric. Res., 47: 35-41.
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46. Yousef, M.I., K.E.A. Zeinab, M.M. Zeitoun, S.A. Hassan and A.F.M. Ibrahim, 2002. Mineral profile and aldosterone level of male rabbits as influenced by drinking natural saline well water. Alexandria J. Agric. Res., 47: 27-33.
47. Zeitoun, M.M., M.I. Yousef, G.A. Abdallah and K.I. Kamel, 2001. Tramadol hydrochloride enhances libido, semen characteristics and testosterone production of subfertile male rabbits. J. Agric. Sci. Mansoura Univ., 26: 7595-7606.
48. Hattab, S.A. and M.M. Zeitoun, 2000. Effect of cloprestenol,uterine status and day postpartum on the reproductive performance of dairy cows. J. Egyptian Vet. Med. Assoc., 60: 31-45.
49. Lammoglia, M.A., M.M. Zeitoun, S.T. Willard and R.D. Randel, 1999. Effect of removal of the ovary containing the largest follicle before ovulation on subsequent function of remaining ovary in Brahman cows. Egyptian J. Anim. Prod., 36: 103-110.
50. Hattab, S.A. and M.M. Zeitoun, 1999. Progesterone profileresponse to exogenous FSH, PMSG or GnRH-PGF2α in non-cycling buffalo cows and effect of FSH or PMSG on early pregnancy. Alexandria J. of Agric. Res., 44: 27-40.
51. Yousef, M.I. and M.M. Zeitoun, 1998. Bovine ovarianfollicular fluids modulate the release of transaminases, acrosome reaction and motility of the rabbit sperm in vitro. Alexandria J. Agric. Res., 143: 17-26.
52. Zeitoun, M.M., H.F. Rodriguez and R.D. Randel, 1996. Effectof season on ovarian follicular dynamics in Brahman cows. Theriogenology, 45: 1577-1581.
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53. Zeitoun, M.M., 1995. Steroidogenic potential of granulose cellsobtained from buffalo and Brahman cows ovaries. Alex. J. Agric. Res., 40: 51-64.
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54. Zeitoun, M.M., 1995. Resuming ovarian activity in subfertilefemale rabbits by an economical single dose of prostaglandin analogue. Alex. J. Agric. Res., 40: 109-117.
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55. Zeitoun, M.M., 1995. Prostaglandin F2αalters steroidogenicactivity but not Insulin-like growth factor-I (IGF-I) production in Brahman ovaries. J. Alex. Sci. Exch., 16: 377-387.
56. Zeitoun, M.M., 1995. Effect of luteinizing hormone andforskolin on in vitro progesterone production by granulosa cells of dominant non ovulatory follicle. Alex. J. Agric. Res., 40: 37-49.
57. Zeitoun, M.M. and A.Z. Fathelbab, 1994. Seasonal ovarian function in Egyptian water buffalo as measured by a simple progesterone enzyme immuno assay in whole milk. Alex. J. Agric. Res., 39: 55-67.
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58. Zeitoun, M.M., A.M. Yassen, A.A. Hassan, A.Z. Fathelbab, S.E. Echternkamp, T.H. Wise and R.R. Maurer, 1991. Superovulation and embryo quality in beef cows using PMSG and a monoclonal anti-PMSG. Theriogenology, 35: 653-667.
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59. Zeitoun, M., A.Z. Fathelbab, A.M. Yassen and Z. Abo-Elezz, 1985. The protective ability of different levels of glutamic acid in milk extender to friesian and buffalo bull sperm stored at 5°C. J. Agri. Res., Tanta Univ. Egypt, 11: 16-22.
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