A Comparative Analysis of Cryptorchidism Occurrence across Sheep Varieties
Abstract
Cryptorchidism is a common reproductive condition in sheep that can have a major effect on both fertility and the overall production of the herd. The purpose of this research was to determine the thorough comparative investigation of the prevalence incidence of cryptorchidism and its variants in sheep breeds. Data about the horn pattern and cryptorchidism of sheep breeds such as Hassan, Bellary, Kenguri and Mandya were gathered from shepherds' herds in the respective habitat tracts of those sheep breeds. Hassan and Mandya sheep were used in autopsy research and ultrasound scanning to determine the percentage of cryptorchid testes retained in the gastrointestinal, inguinal and ventral areas. In sheep from Bonpala and Hassan, bilateral cryptorchidism was greater. There was a discernible deficiency in the Bonpala and Hassan breeds as evidenced by the increased retention of cryptorchid testes in the abdominal region as opposed to the femoral and subcutaneous regions. This comparative investigation sheds light on the complex nature of sheep cryptorchidism. The development of focused breeding methods and management techniques aimed to reduce the occurrence of this reproductive condition and improve the general health and productivity of sheep populations depends on the comprehension of breed-specific characteristics and environmental factors.
References
Albarella, S., D’Anza, E., Galdiero, G., Esposito, L., De Biase, D., Paciello, O., & Peretti, V. (2019). Cytogenetic Analyses in Ewes with Congenital Abnormalities of the Genital Apparatus. Animals, 9(10), 776.
Prache, S., Schreurs, N., & Guillier, L. (2022). Factors affecting sheep carcass and meat quality attributes. Animal, 16, 100330. https://doi.org/10.1016/j.animal.2021.100330.
Gowane, G. R., Kumar, A., & Nimbkar, C. (2019). Challenges and opportunities to livestock breeding programs in India. Journal of Animal Breeding and Genetics, 136(5), 329-338.
Lei, Z., Sun, W., Guo, T., Li, J., Zhu, S., Lu, Z., ... & Yue, Y. (2021). Genome-wide selective signatures reveal candidate genes associated with hair follicle development and wool shedding in sheep. Genes, 12(12), 1924.
Melnychuk, V., Yevstafieva, V., Bakhur, T., Antipov, A., & Feshchenko, D. (2020). The prevalence of gastrointestinal nematodes in sheep (Ovis aries) in the central and south-eastern regions of Ukraine. Turkish Journal of Veterinary & Animal Sciences, 44(5), 985-993. https://doi.org/10.10.3906/vet-2004-54.
Sardaro, R., & La Sala, P. (2021). The new value to wool: Innovative garments for the preservation of sheep landraces in Italy. Animals, 11(3), 731.
Gradil, C., & McCarthy, R. (2023). Cryptorchidism. Small animal soft tissue surgery, 720-725.
Greber, D., Doherr, M., Drögemüller, C., & Steiner, A. (2013). Occurrence of congenital disorders in Swiss sheep. Acta Veterinaria Scandinavica, 55(1), 1-7. https://doi.org/10.1186/1751-0147-55-27.
Adeyeye, A. A., Odo, T. I., & Isiyaku, A. (2022). Testicular abnormalities of rams in two slaughterhouses in Sokoto, Nigeria. Sokoto Journal of Veterinary Sciences, 20(4), 248-254. https://doi.org/10.4314/sokjvs.v20i4.4.
Schwartz, D., Waqas, M. S., Arroyo, E., Ruiz, A., & Tibary, A. (2023). Laparoscopic-assisted cryptorchidectomy in South American camelids and Nigerian dwarf goats. Clinical Theriogenology, 15, 98-102. https://doi.org/10.58292/ct.v15.9638.
Aljubouri, T. R. S., Al-Shuhaib, M. B. S., & Javadmanesh, A. (2020). HMGA2 gene polymorphisms and their effects on main growth traits indices in Awassi and Karakul sheep. Agriculture and Natural Resources, 54(6), 587-594.
Rout, P. K., Behera, B. K., Rout, P. K., & Behera, B. K. (2021). Goat and sheep farming. Sustainability in Ruminant Livestock: Management and Marketing, 33-76.
Auriemma, R. S., Menafra, D., de Angelis, C., Pivonello, C., Garifalos, F., Verde, N., & Pivonello, R. (2023). The Role of the Environment in Testicular Dysgenesis Syndrome. In Environmental Endocrinology and Endocrine Disruptors: Endocrine and Endocrine-targeted Actions and Related Human Diseases (pp. 1-38). Cham: Springer International Publishing.
Fahmy, M. A. B. (2022). Animals Scrota. Normal and Abnormal Scrotum, 35-48. https://doi.org/10.1007/978-3-030-83305-3_5.
Saravanan, K. A., Panigrahi, M., Kumar, H., Bhushan, B., Dutt, T., & Mishra, B. P. (2021). Genome-wide analysis of genetic diversity and selection signatures in three Indian sheep breeds. Livestock Science, 243, 104367.
Gebreselassie, G., Berihulay, H., Jiang, L., & Ma, Y. (2019). Review on genomic regions and candidate genes associated with economically important production and reproduction traits in sheep (Ovies aries). Animals, 10(1), 33.
Schön, N. (2021). Genetic variant analysis of German Sheep Poodle with focus on cryptorchidism (Doctoral dissertation).
Gootwine, E. (2020). Invited review: Opportunities for genetic improvement toward higher prolificacy in sheep. Small Ruminant Research, 186, 106090.
Barbotin, A. L., Dauvergne, A., Dumont, A., Ramdane, N., Mitchell, V., Rigot, J. M., & Robin, G. (2019). Bilateral versus unilateral cryptorchidism in nonobstructive azoospermia: testicular sperm extraction outcomes. Asian Journal of Andrology, 21(5), 445.
Sharma, R., Ahlawat, S., Sharma, H., Sharma, P., Panchal, P., Arora, R., & Tantia, M. S. (2020). Microsatellite and mitochondrial DNA analyses unveil the genetic structure of native sheep breeds from three major agroecological regions of India. Scientific reports, 10(1), 20422.
