Abstract
Clinical examination, bodily condition score (BCS), heart girth (HG), body length (BL), wither height (WH), and scrotal circumference (SC) were assessed on 486 mature Ethiopian Menz rams, on small farms, in local markets, and at the main abattoir in Addis Ababa from December 1994 to April 1995. Almost 27% of the rams were found to be unfit for breeding. Poor general condition, mainly in the form of respiratory disorders, was seen in 1.2% of the rams. Balanoposthitis, epididymitis and orchitis were the most common pathological conditions, affecting the external reproductive organs in 14.6%, 4.5% and 4.1% of the rams, respectively. Testicular calcification, cysts and testicular haemorrhagic lesions were detected in 4, 6 and 8, respectively, of the 60 rams examined at necropsy. The BCS, HG, BL and WH averaged 2.1±0.5, 67.7±5.0 cm, 60.1±4.5 cm and 60.1±4.3 cm, respectively. The mean SC was 25.5±3.9 cm and did not vary significantly with age (p>0.05). Among the linear body measurements, the highest correlation was between BL and WH (r = 0.66). SC was found to be most closely correlated to HG (r = 0.46). More investigations into the relationship between the present findings and actual fertility, and on their practical application in the selection of rams for breeding is recommended.
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REFERENCES
Adesiyun, A.A., Ezekoli, C.D., Kumi-Diaka, J. and Udechukwu, A.L., 1983. Brucella ovis as a possible cause of infertility and abortion on two sheep ranches in Nigeria. Bulletin of Animal Health and Production, 33, 11-16
Ageyemang, K., Akalework, N., Voorthuizen, A. and Anderson, F.M., 1985. Report on a production survey of farmer's sheep flocks in Debre Berhan area of the Ethiopian highlands, (Highlands Program Working Paper; ILCA, Addis Ababa, Ethiopia), 1-18
Al-Nakib, F.M.S., Lodge, G.A. and Owen, J.B., 1986. A study of sexual development of ram lambs. Animal Production, 43, 459-468
Bayou, K., Mengiste, B., Sirac, A. and Tefera, A., 1999. Control of Ekek skin defects in sheep by insecticides and shearing. Journal of the Society of Leather Technologists and Chemists, 83, 147-148
Dufour, J.J., Fahmy, M.H. and Minvielle, F., 1984. Seasonal changes in breeding activity, testicular size, testosterone concentration and seminal characteristics in rams with long or short breeding season. Journal of Animal Science, 58, 416-422
Foster, F.M., Jackson, R.B. and Hopkins, D.L., 1991. Prevention of posthitis in wool sheep using alternative to synthetic testosterone.Wool Technology and Sheep Breeding, 38, 74-76
Foster, R.A., Ladds, P.W., Hoffman, D. and Briggs, G.D., 1990. Pathology of the reproductive tract of Merino rams in NorthWestern Queensland. Australian Veterinary Journal, 66, 262-264
Galal, E.S.E., 1983. Sheep germ plasm in Ethiopia. FAO Animal Genetic Resource Information, Vol. 1, (FAO, Rome), 4-12
Gunn, R.M.C., Sanders, R.N. and Granger, W., 1942. Studies in fertility in sheep. Commonwealth of Australia, Council for Science and Indian Research Bulletin, 1-148
Hossamo, H.E., Owen, J.B. and Farid, M.F.A., 1986. Body condition score and production in fat tailed Awassi sheep under range conditions. Research and Development in Agriculture, 3, 99-104
Hughes, K.L. and Claxton, P.D., 1968. Brucella ovis infection. 1. An evaluation of microbiological, serological and clinical methods of diagnosis in the ram. Australian Veterinary Journal, 44, 41-47
Hulet, C.V., 1977. Prediction of fertility in rams: factors a¡ecting fertility, and collection, testing, and evaluation of semen. Veterinary Medicine/Small Animal Clinician, 8, 1363-1367
ILCA, 1993. Handbook of African Livestock Statistics, (International Livestock Center for Africa, Addis Ababa, Ethiopia), 1-66
Kasali, O.B., Mukasa-Mugerwa, E., Tekelye, B. and Njau, B.C., 1990. Reproductive wastage in small ruminants in tropical Africa. In: R.T. Wilson and Azeb Melaku (eds), African Small Ruminant Research and Development, Proceedings of a Conference held at Bamenda, Cameroon, January 1989, (ILCA, Addis Ababa, Ethiopia), 277-286
Kebede, A. and Ray, B., 1992. Intra-annual sheep price patterns and factors underlying price variations in the central highlands of Ethiopia. In: B. Rey, S.H.B. Lebbie and L. Reynolds (eds), Small Ruminant Research and Development in Africa, Proceedings of the First Biennial Conference of the African Small Ruminant Research Network, ILRAD, Nairobi, Kenya, December 1990, (ILCA, Nairobi), 59-72
Lees, J.L., 1978. Functional infertility in sheep. The Veterinary Record, 102, 232-236
MacLaren, A.P.C., 1988. Ram fertility in south-west Scotland. British Veterinary Journal, 144, 45-54
Mazouz, A., Toé, F., Lahlou-Kassi, A. and Derqaoui, L., 1992. Selection of rams in sheep breeding management. In: B. Rey, S.H.B. Lebbie and L. Reynolds (eds), Small Ruminant Research and Development in Africa, Proceedings of the First Biennial Conference of the African Small Ruminant Research Network, ILRAD, Nairobi, Kenya, December 1990, (ILCA, Nairobi), 195-205
Mukasa-Mugerwa, E. and Tekleye, B., 1988. The reproductive performance of Ethiopian highland sheep. Animal Reproduction Science, 17, 95-102
Mukasa-Mugerwa, E. and Zere, E., 1992. Relationship of testicular growth and size to age, body weight and onset of puberty in Menz ram lambs. Theriogenology, 38, 979-988
Mukhergee, D.K., Singh, S.K. and Mishra, H.R., 1981. Phenotypic correlations of body weight with body measurements in Grey Bengal goats. Indian Journal of Animal Science, 51, 682-694
Roberts, S.J., 1971.Veterinary Obstetrics and Genital Diseases, 2nd edn, (CBS Publishers and Distributors, India), 604-725
Ruttle, J.L. and Southward, G.M., 1988. Influence of age and scrotal circumference on breeding soundness examination of range rams. Theriogenology, 29, 945-949
SAS (1994). SAS/STAT Guide for Personal Computers, Version 8 Edition, (SAS Institute Inc., Cary, NC)
Suiter, J., 1987. Body condition scoring of sheep and goats. Farm Note 40, (Western Australian Department of Agriculture, Perth, Australia), 1-3
Toé, F., Lahlou-Kassi, A. and Mukasa-Mugerwa, E., 1994. Semen characteristics of Ile-de-France rams of different age and physical condition. Theriogenology, 42, 321-326
Wilson, R.T., 1975. Comparative data on two populations of indigenous sheep and goats in Sudan and Ethiopia. Sudan Journal of Veterinary Science and Animal Husbandry, 16, 1-11
Wilson, R.T. and Durkin, J.W., 1984. Age at permanent incisor eruption in indigenous goats and sheep in semi-arid Africa. Livestock Production Science, 11, 451-455
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Hibret, A., Toé, F., Mukasa-Mugerwa, E. et al. Genital Disorders, Linear and Testicular Characteristics in Menz Rams. Tropical Animal Health and Production 33, 219–227 (2001). https://doi.org/10.1023/A:1010314821537
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DOI: https://doi.org/10.1023/A:1010314821537