Semen characteristics and testosterone profiles of Yankasa rams fed graded levels of dietary protein using cotton seed and palm kernel cakes

Abdulrashid M., Darren T. (2016): Bio-potency of Selenium and Protein supplements on reproductive traits of Male Rabbits: A Review. Academic Research Journal of Agricultural Science and Research 4: 105 – 116.Search in Google Scholar

Abi-Saab S., Hajj E., Abi Salloum B., Rahme E. (2008): Seasonal and altitudinal variations on adaptation, growth and testicular activity of Baladi goats with vertical transhumance in eastern Mediterranean. Lebanese Science Journal 9: 99 – 111.Search in Google Scholar

Alkass J. E., Bryant M. J., Walton J. S. (1982): Some effects of level of feeding and body condition upon sperm production and gonadotropin concentrations in the ram. Animal Production 34: 265 – 277.10.1017/S0003356100010205Search in Google Scholar

Almeida A. M., Schwalbach L. M. J., Cardoso L. A., Greyling J. P. C. (2007): Scrotal testicular and semen characteristics of young Boer bucks fed winter held hay: The effect of nutritional supplementation. Journal of Small Ruminant Research 73: 216–220.10.1016/j.smallrumres.2007.02.001Search in Google Scholar

Amir D., Volcani R. (1965): Seasonal fluctuations in the sexual activity of Awassi, German Mutton, Merino, Corriedale, Border Leicester and Dorsett Horn rams. Journal of Agricultural Science 64: 115 – 120.10.1017/S0021859600010558Search in Google Scholar

AOAC (Association of Official Analytical Chemists) (1990): Official Methods of Analysis, (15^th edition). Washington D.C., pp. 69–88.Search in Google Scholar

Babashani M., Ate I. U., Rekwot P. I., Njoku C. O., Salisu U. S., Yusuf M. (2015): Semen Characteristics of Yankasa Rams Fed Gossypol Containing Diets. International Journal of Agriculture and Forestry 5: 323–329.Search in Google Scholar

Bindari Y.R., Sulochana S., Nabaraj S., Gaire T. N. (2013): Effects of nutrition on reproduction. A Review. Advance Applied Science Research 4: 421 – 429.Search in Google Scholar

Butler W. R., Calaman J. J., Beam S. W. (1996): Plasma and milk urea nitrogen in relation to pregnancy rate in lactating dairy cattle. Journal of Animal Science 74: 858–865.10.2527/1996.744858x8728008Search in Google Scholar

Chandrasekhar Y. D., D’Occhio M. J., Setchell B. P. (1986): Reproductive hormone secretion and spermatogenesis. New York Academy of Science 637: 445–458.Search in Google Scholar

Cheah Y., Yang W. (2011): Functions of essential nutrition for high quality spermatogenesis. Advances in Bioscience and Biotechnology 2: 182–197.10.4236/abb.2011.24029Search in Google Scholar

Elmaz Ö., Cirit Ü., Keser O., Gürbulak K., Güvenç K., Kutay C. (2007): Effect of two dietary protein levels on testosterone, testicular parameters and semen quality in ram lambs during pubertal development. Medycyna Weterynaryjna 63: 1177–1180.Search in Google Scholar

Esteso M. C., Soler A., Fernandez-santos M., Quinteromoreno A. A., Garde J. J. (2006): Functional significance of the sperm head morphometric size and shape for determining freezability in Iberian Red Deer (Cervus elaphus hispanicus) epididymal sperm samples. Journal of Andrology 27: 662–670.10.2164/jandrol.106.00048916728722Search in Google Scholar

Fernandez M., Giralde F. J., Frutos P., Lavin P., Mantecon A. R. (2004): Effect of undegradable protein supply on testicular size, spermiogram parameters and sexual behavior of mature Assaf rams. Theriogenology 62: 299–310.10.1016/j.theriogenology.2003.10.00315159122Search in Google Scholar

Jibril A., Ate I. U., Rekwot P. I., Osuhor C. U. (2011): Effect of graded levels and sources of protein on scrotal circumference and semen profile of Yankasa rams. Journal of Veterinary Sciences 9: 22 – 27.Search in Google Scholar

Jibril A., Ate I. U, Rekwot P. I., Osuhor C. U. (2013): Live weight changes, gonadal and epididymal sperm reserves of Yankasa Rams fed different levels of dried layer litter in their diets. Scientific Journal of Animal Science 2: 59–65.Search in Google Scholar

Kheradmand A., Babaei H., Batavani R. A. (2006): Effect of improved diet on semen quality and scrotal circumference in rams. Veterinarski Arhiv 76: 333 – 341.Search in Google Scholar

Kumar D., De K., Saxena V. K., Naqvi S. M. K. (2015): The effect of nutritional stress on sperm motion characteristics and sexual behaviour of rams in a semi-arid tropical environment. Journal of Animal and Feed Sciences 24: 107–112.10.22358/jafs/65635/2015Search in Google Scholar

Lincoln G. A., Almeida O. F. X., Klandorf H., Cunningham R.A. (1982): Hourly fluctuations in the blood levels of melatonin, prolactin, luteinizing hormone, follicle-stimulating hormone, testosterone, triiodothyronine, thyroxine and cortisol in rams under artificial photoperiods, and the effects of cranial sympathectomy. Journal of Endocrinology 92: 237–250.10.1677/joe.0.09202377199556Search in Google Scholar

Maina V. A., Chaudhari S. U. R., Ribadu A. Y. (2006): Effect of ecotype on semen characteristics of Sahel goats in Borno state. Journal of Applied Science 6: 1220–1224.10.3923/jas.2006.1220.1224Search in Google Scholar

Maksimovic N., Hristov S., Stankovic B., Petrovic M. P., Mekic C., Ruzic-Muslic D., Cardo-Petrovic M. (2016): Investigation of serum testosterone level, scrotal circumference, body mass, semen characteristics, and their correlations in developing MIS lambs. Turkish Journal of Veterinary and Animal Science 40: 53–59.10.3906/vet-1505-61Search in Google Scholar

Martini G. B., Walkden-Brown S. W. (1995): Nutritional influences on reproduction inmature male sheep and goats. Journal of Reproduction and Fertility Supplement 49: 437–449.Search in Google Scholar

Melrose D. R., Laing J. A. (1970): Characteristics of normal semen. In: Laing, J. A. (Ed.), Fertility and Infertility in the Domestic Animals. Baillière Tindall and Cassell Press, London, pp. 140–143.Search in Google Scholar

Ososanya T. O., Adewumi M. K., Oyeyemi M. O., Adeosun A. O. (2014): Semen characteristics of pubertal West Africa dwarf rams fed pineapple waste silage as replacement for dried cassava peel. African Journal of Agricultural Research 9: 501–506.10.5897/AJAR2013.7990Search in Google Scholar

Oyeyemi M. O., Olukole, S. G., Taiwo B., Adeniji D. A. (2009): Sperm motility and viability in West African dwarf rams treated with Euphorbia hirta. International Journal of Morphology 27: 459–462.10.4067/S0717-95022009000200024Search in Google Scholar

Preston T. B., Stevenson R. I., Lincoln A. G., Monfort L. S., Pilkington G.J., Wilson K. (2012): Testes size, testosterone production and reproductive behaviour in a natural mammalian mating system. Journal of Animal Ecology 81: 296–305.10.1111/j.1365-2656.2011.01907.xSearch in Google Scholar

Rasbech N. O. (1984): The male and fertility of domestic animals. In: The male in farm animal reproduction. (M. Courot, Ed). Martinus Nijhoff Publishers, pp. 2 – 23.Search in Google Scholar

Rekwot P. I., Lamidi O. S., Adamu A. M., Egbuedo C. U., Ruwaan J. S., Okereke S. N. (1987): Reproductive performance of Bunaji bulls grazing natural pasture and receiving supplements containing palm kernel meal. Nigerian Veterinary Journal 18: 26 – 36.Search in Google Scholar

Suhair S. M., Abdalla M. A. (2010): Effects of Level of Feeding and Season on Thermoregulation and Semen Characteristics in Desert Rams (Ovis aries). Global Veterinaria 4: 207 – 215.Search in Google Scholar

Swiątkiewicz S., Arczewska-Włosek A. Józefiak D. (2016): The use of cottonseed meal as a protein source for poultry: An updated review. World’s Poultry Science Journal 72: 473–484.10.1017/S0043933916000258Search in Google Scholar

Togun V. A., Egbunike G. N. (2006): Seasonal variations in the sperm production characteristics of Zebu (White Fulani) cattle genitalia in the humid tropical environment. Middle-East Journal of Scientific Research 1: 87–95.Search in Google Scholar

Verstegen J., Iguer-Ouada M., Onelin K. (2002): Computer assisted semen analyzers in andrology research and veterinary practice. Theriogenology 57: 149–179.10.1016/S0093-691X(01)00664-1Search in Google Scholar

Ye B. E., Zhang S. F., Teng C. S. (1989): Biological activity in the repopulating rat spermatocyte after the withdrawal of gossypol treatment: II. The activity for the synthesis of cellular and nuclear basic proteins. Contraception 40: 243–250.10.1016/0010-7824(89)90010-3Search in Google Scholar

Zemjanis R. (1970): Collection and Evaluation of Semen. In: Diagnostic and Therapeutic Techniques in Animal Reproduction. (2^nd Edition), Williams and Wilkins Co. Baltimore, pp. 139–156.Search in Google Scholar