SEASONAL VARIATIONS IN TESTICULAR MEASUREMENTS, FRESH SPERM QUALITY AND POST-THAW SPERM MOTILITY IN GURCU GOAT BUCKS Gurcu goats, freezability, seasonal variation, semen characteristics, testes

Main Article Content

Recai KULAKSIZ
Umut Çağın ARI
Mushap KURU
Savaş YILDIZ
Necdet Cankat LEHİMCİOĞLU
Yavuz ÖZTÜRKLER

Abstract

This study was aimed to determine seasonal variations in testicular measurements and semen characteristics of four Gurcu goat bucks. Data were collected over a whole year. Body weight and morphometric testicular parameters were measured once a month. Semen samples were collected weekly through an artificial vagina, then diluted in a skim milk extender and frozen. Semen volume, sperm concentration, the total number of spermatozoa and the mass activity were evaluated in each extended semen sample. In contrast, sperm progressive motility was assessed prior to the cryopreservation process. In autumn, the testis was larger than in other seasons (P < 0.01). Ejaculate volume increased in winter (P < 0.01), while the total number of spermatozoa increased during the winter even the seasonal effect was not significant (P = 0.24). Post-thaw motility was highest for the semen collected in autumn. In conclusion, although seasonal variation in the characteristics of fresh semen was limited, it may be appropriate to collect semen in autumn, when sperm doses should be cryopreserved for the genetic preservation of this breed.

Article Details

Section
Articles

References

Ahmad, N. & Noakes, D. E. (1996). Seasonal variations in the semen quality young british goats. British Veterinary Journal, 152, 225−236.

Al-Ghalban, A., Tabbaa, M. J.& Kridli, R. T. (2004). Factors affecting semen characteristics and scrotal circumferences in Damascus bucks. Small Ruminant Research, 53,141−149.

Barkawi, A. H., Elsayed, H. E., Ashour, G. & Shehata, E. (2006). Seasonal changes in semen characteristics, hormonal profiles and testicular activity in Zaraibi goats. Small Ruminant Research, 66, 209−213.

Chentouf, M., Bister, J. L. & Boulanouar, B. (2011).
Reproduction characteristics of North Moroccan indigenous goats. Small Ruminant Research, 98, 185−188.

Choe, C. Y., Kim, J. G., Cho, S. R., Son, D. S., Kim, Y. K., Balasubramanian, S., Choe, S. Y. & Rho, G. J. (2006). Influence of seasons, extenders, slow and rapid freezing on seminal characters in Korean native bucks. Reproduction in Domestics Animals, 41, 55−60.

Demirci, E. (2002). Evcil Hayvanlarda Reprodüksiyon, Suni Tohumlama ve Androloji Ders Notları. Elazığ: F. Ü. Vet. Fak. Ders. Teksiri, No: 53.

Dorada, J., Munoz-Serrano, A. & Hidalgo, M. (2010). The effect of cryopreservation on goat semen characteristics related to sperm freezability. Animal Reproduction Science, 121, 115−123.

Farshad, A., Yousefi, A., Moghaddam, A. & Khalili, B. (2012). Seasonal changes in serum testosterone, LDH concentration and semen characteristics in Markhoz Goat. Asian-Australasian Journal of Animal Science, 25, 189−193.

Gordon, I. (1999). Controlled reproduction in sheep and goats. 2nd edition, CABI Publishing, pp. 351−359.

Greyling, J. P. C. & Grobbelaar, J. A. N. (1983). Seasonal variation in semen quality of Boer and Angora goat rams using different collection techniques. South African Journal of Animal Science, 13, 250−252.

Kamal, A. G., Amel, A. A., Bakhiet, O. & Babiker, A. (2005). Comparative studies on reproductive performance of Nubian and Saanen bucks under the climatic conditions of Khartoum. Journal of Animal Veterinary Advances, 4, 942−944.

Karagiannidis, A., Varsakeli, S. & Karatzas, G. (2000). Characteristics and seasonal variations in the semen of Alpine, Saanen and Damascus goat bucks born and raised in Greece. Theriogenology, 53, 1285−1293.

Kridli, R. T., Tabbaa, M. J. & Barakeh, F. S. (2007). Seasonal variation in scrotal circumference and semen characteristics of Black Bedouin and Black Bedouin-Damascus crossbred bucks. Asian-Australasian Journal of Animal Science, 20, 359−364.

Kulaksız, R. & Daşkın, A. (2010). In vitro evaluation of Saanen buck semen frozen in different extenders supplemented with various antioxidants. Ankara Universitesi Veteriner Fakültesi Dergisi, 57,151−156.

Kulaksız, R., Arı, U. C., Daşkın, A. & Güner, A. G. (2013). The effect of different glycerol concentrations on freezability of semen from Angora, Kilis and Saanen goats. Slovak Journal of Animal Science, 46, 39−44.

Kulaksız, R., Arı, U. Ç., Kuru, M., Yıldız, S., Lehimcioglu, N. C., Öztürkler, Y. & Atakişi, E. (2016). Investigation of changes of spermatologic andrologic and hormonal parameters in Georgian male goats during breeding and non breeding season. 12th International Conference on Goats, 207:25−30 September.

Kuru, M., Boga Kuru, B., Kulaksız, R., Arı, U. Ç. & Oral, H. (2017). Some reproductive features of Gurcu goats. Harran Üniversitesi Veteriner Fakültesi Dergisi, 6, 119−125.

Kuru, M., Kulaksız, R. & Oral, H. (2018). Determination of gestational age by measuring defined embryonic and fetal parameters with ultrasonography in Abaza and Gurcu goats. Acta Veterinaria Brno, 87, 357−362.

Qureshi, M. S., Khan, D., Mushtaq, A. & Afridi, S. S. (2013). Effect of extenders, posdilution intervals, and season on semen quality in dairy goats. Turkish Journal of Veterinary Animal Science, 37, 147−152.

Roca, J., Martinez, E., Vazquez, J. M. & Coy, P. (1992). Charateristics and seasonal variations in the semen of Murciano-Granadina goats in the Mediterranean area. Animal Reproduction Science, 29, 255−262.

Souri, M. & Mirmahmoudi, R. (2014). Effect of season on dry matter intake and reproductive activity of Merghoz buck goats in west of Iran. Iran Journal of Applied Animal Science, 4, 317−323.

Sezgin, E., Kopuzlu, S. & Yüksel, S. (2010). Gürcü keçisi. Ulusal Keçicilik Kongresi, 237−240. Çanakkale, Türkiye

Talebi, J., Souri, M., Moghaddam, A., Karimi, I. & Mirmahmoodi, M. (2009). Characteristics and seasonal variation in the semen of Markhoz bucks in western Iran. Small Ruminant Research, 85, 18−22.

Tekin, N. (1994). Spermanın muayenesi ve değerlendirilmesi. Evcil Hayvanlarda Reprodüksiyon, Sun'i Tohumlama, Doğum ve İnfertilite (Alaçam, A., ed). Dizgievi, Konya, Turkey. 67−79.

Tuli, R. K. & Holtz, W. (1995). Effect of season on the freezability of Boer goat semen in the northern temperate zone. Theriogenology, 43, 1359−1363.

Wang, W., Luo, J., Sun, S., Xi, L., Gao, Q., Haile, A. B., Shi, H., Zhang, W. & Shi, H. (2015). The effect of season on spermatozoa motility, plasma membrane and acrosome integrity in fresh anf frozen thawed semen from Xinong Sanen bucks. Reproduction in Domestic Animals, 50, 23−28.

Webb, E. C., Dombo, M. H. & Roets, M. (2004). Seasonal variation in semen quality of Gorno Altai cashmere goats and South African indigenous goats. South African Journal of Animal Science, 34, 240−243.

Yalçın, B. C. (1990). Türkiye'de yetiştirilen keçi ırkları. In "Koyun-Keçi Hastalıkları ve Yetiştiriciliği", Ed.: Aytuğ, C. N., Alaçam, E., Özkoç, Ü., Yalçın, B. C., Gökçen, H., Türker, H., TÜM VET Hayvancılık Hizmetleri Yayını, Teknografik Matbaası, İstanbul, Türkiye.

Zamiri, M. J. & Heidari, A. H. (2006). Reproductive characteristics of Rayini male goats of Kerman province in Iran. Animal Reproduction Science, 96, 176−185.