Effect of oral administration of L-tyrosine on the quality of ram semen. Annals of Agric. Sci., Moshtohor, Vol. 30 (3):1207-1218 Effect of L-tyrosine administration on some trace elements in ram serum and seminal plasma. Alex. J. Vet. Sci. Vol. 9(1):135-139. Some physico-chemical semen characteristics of two breeds of Rabbits in relation to sequence of ejaculation. Egyptian Soc. For Anim. Reprod. Fert., Fifth Annual Congress, Cairo, January 26-28, 1993:180-185 Studies on extension of Rabbit semen for artificial insemination practice. Egyptian Soc. For Anim. Reprod. Fert., Fifth Annual Congress, Cairo, January 26-28, 1993:186-191 The effect of postpartum period and Gn-RH on the fertility of female Rabbits. Egyptian Soc. For Anim. Reprod. Fert., Fifth Annual Congress, Cairo, January 26-28, 1993:192-199. Study of some wool physical characteristics of Ossimi ewes. Annals of Agric. Sci., Moshtohor, Vol. 31 (1):187-198. Mineral concentrations in wool fibers and blood plasma of Ossimi ewes during different reproductive phases. Annals of Agric. Sci., Moshtohor, Vol. 31 (2):807-818. Some physiological aspects of Ossimi and Ossimi crossbred lambs as affected by surgical castration and ethinylestradiol implantation. 1- Concentration of some blood plasma components. Annals of Agric. Sci., Moshtohor, Vol. 31 (2):819-833. Semen quality, testosterone concentration and some body measurements in rams of different breeds. Annals of Agric. Sci., Moshtohor, Vol. 31 (2):855-864. Influence of some environmental factors on wool growth rate. American Soc. Agric. Engin. Fourth International Livestock environment Symposium. Univ. Warwick, England, 6-9 July, 1993:38-42. Some physical and chemical characteristics of wool in Ossimi ewes during different reproductive phases. Zagazig J. Agric. Rese. Vol 20(6):1779-1789. Some physiological aspects of Ossimi and Ossimi crossbred lambs as affected by surgical castration and ethinylestradiol implantation. 2- Morphology of some endocrine gland. Annals of Agric. Sci., Moshtohor, Vol. 31 (4):2011-2018. Some physiological aspects of Ossimi and Ossimi crossbred lambs as affected by surgical castration and ethinylestradiol implantation. 3-Histology of testis and thyroid glands of Ossimi lambs. Annals of Agric. Sci., Moshtohor, Vol. 31 (4):2019-2033. Carcass traits and non-carcass components weight of Ossimi and crossbred lambs in relation to pre-slaughter weight. Annals of Agric. Sci., Moshtohor, Vol. 32 (3):1461-1471. Studies on some productive traits in sheep. 1- Evaluation of carcass characteristics of lambs. Annals of Agric. Sci., Moshtohor, Vol. 32 (3):1473-1488. Hormonal trial for predication of palpable and un-palpable corpora lutea in cattle and Buffaloes.2ndVet.Med. Cong. Zagazig. Plasma testosterone level and histology of tests and epididymes of Ossimi lambs in relation to age. Annals of Agric. Sci., Moshtohor, Vol. 33 (4):1237-1250. Body weights and measurements of Ossimi and Rahmani X Ossimi crossbred lambs as affected by some factors. Annals of Agric. Sci., Moshtohor, Vol. 33 (4): 1251-1263. Assessment of some reproductive performance in cattle and Buffaloes using fecal estrogens. Eighth Annual Congress Egypt. Soc. Anim. Reprod. Fert., Cairo, Egypt, 172-178. Some ewe reproductive and lamb growth traits in Rahmani, Ossimi sheep and their crosses. Annals of Agric. Sci., Moshtohor, Vol. 34 (1):139-156 Immunosuppressive effect of some water pollutants on sheep vaccinated with bivalent lamb dysentery and pulpy kidney vaccines. 7th Sci. Cong.Fac. Vet. Med., Assiut, Egypt: 531-546 Effect of sex and age on daily weight gain, thyroxine hormone and some blood components in Ossimi and crossbred (Ossimi × Rahmani) lambs. Annals of Agric. Sci., Moshtohor, Vol. 34 (4):1537-1548. Plasma testosterone profile, reaction time, semen quality, some histochemical Activities of fertility of Ossimi rams treated with indomethacin and dexamethasone. Zag. Vet. J. Vol. 24, N0. 4 pp. 78-93. In vitro fertilization and development of Rabbit ova. International Conference on Anim. Prod. And Health. Egyptian Interna. Center. Agric. Dokki, Cairo, 1997:593-602. A study on the efficacy and Safety on ivermectin against sarcoptic mange in Rabbit bucks and effect on semen quality. Benha Vet. Med. J. Vol 8 No(2):291-300. In vitro maturation, Fertilization and development of Rabbit oocytes. Egyptian Journal of Rabbit Science, 8(1):31-47 Reproductive disorders, Congenital abnormalities and chromosomal aberrations incidental to hypovitaminosis A- in the Rabbits. Egyptian Soc. Anim. Peprod. Fert. Tenth Annual Congress Giza . The quality and freezability of Buffalo semen with special emphasis to effects of age and genetic polymorphism of blood protein system. Zag. Vet. J. Vol. 26, N0 2 pp. 8-13. Effect of season on some ovarian measurements of hormonal treated Rabbits. 1st Inter. Conf. On Anim. Prod. & Health in Semi Arid Areas, El-Arish-North Sinai, Egypt. pp. 395- 405. Cytological picture of vaginal smears, plasma estradiol-17ß and progesterone profiles during estrous cycle, pregnancy and anestrum in ewes. Zag. Vet. J. Vol. 26, N0. 3 pp. 60-77 Effect of feed supplementation with L-carnitine on growth and cold tolerance of Nile Tilapia and common Carp. 3rd Inter. Conf. On Animal production & Health in Semi Arid Areas , El-Arish-North Sinai, Egypt. Effect of the Fungicide ( copper oxychloride) on reproductive and productive performance of NZW rabbits .The 4 th Inter .con. on Rabbit Pod. in Hot .Clim ., Sharm EL- Sheikh , Egypt. Effect of flumequine on the growth ,residual measurement and chromosomal aberrations in Tilapia fish. J. Drug Res. Egypt, V.27,No.1-2 : 113-117. Bovine mammary gland during the dry period : 1. Histological and ultrastructural changes . Egyptian J. Anim .Prod., 45 Suppl. Issue , Dec.: 223- 235 . Bovine mammary gland during the dry period : 2. Changes in body weight , morphological features for mammary gland and quantifications of nucleic acids .Egyptian J.Anim.Prod .,45 Suppl . Issue, Dec.: 237- 249. Physiological and biochemical changes in bovine mammary secretions during the dry and postpartum periods .The 2nd Animal Wealth Research Conf. In The Middle East & North Africa. Cairo International Conventions Center, Egypt. Evaluation of semen characteristics in a project of synthesizing new line of rabbits in Egypt. 1st International Conference On Biotechnology Applications In Agriculture held in Moshtohor-Hurghada, Benha University, 18-22 February 2012, Egypt, Volume (I), Animal Biotechnology, 1-8 Evaluation of doe traits in a project of synthesizing new line of rabbits in Egypt. 1st International Conference On Biotechnology Applications In Agriculture held in Moshtohor-Hurghada, Benha University, 18-22 February 2012, Egypt, Volume (I), Animal Biotechnology, 9-14 Comparative evaluation of different herbal formula and L-Carnitine on reproductive performance of male Moshtohor rabbits