Öz
This study conducted to evaluate semen quality and plasma testosterone (T), tetra-iodothyronine (T), and triiodothyronine (T) concentrations for different strains of Awassi sheep of different ages in Jordan. Physical traits, semen characteristics and blood samples were assessed in 12 local Awassi rams (6 matures and 6 yearlings) and the 7 crosses of improved Awassi rams (4 matures and 3 yearlings) from the beginning of April until the end of September at the Khanasry Station in Jordan. Local Awassi rams had greater (P<0.01) ejaculate appearance (EA) scale (2.66 ± 0.14 and 2.00 ± 0.19), mass motility (MM) (75.8 ± 1.2% and 70.2 ± 1.6%) and higher (P<0.001) live sperm percent; higher (P<0.05) sperm concentration and (SCN) progressive motility (PM) than crosses of improved Awassi. Local Awassi rams had lower (P<0.001) primary (PAb) and secondary (SAb) abnormal sperm than crosses of improved Awassi. Mature rams had a greater (P<0.05) ejaculate volume (EV), EA scale, SCN and live sperm percent than yearlings. Yearling rams had greater (P<0.001) plasma T (2.05 nmol/L) than mature (1.75 nmol/L) rams. Weekly variations were significantly (P<0.01) different from both strains for some of semen characteristics and blood parameters with fluctuations in different trends. This study indicates that cross breeding of local Awassi with improved Awassi did not improve semen quality and quantity of Awassi sheep in Jordan
Kaynakça
- Alwan, A.F., 2009. Sheep fetal thyroid histological development, with adult Plasma T 4 and T 3 hormones concentrations. Journal of Animal and Veterinary Advances 8 (11), 2115-2117.
- Asadpour, R., Rezazadeh, F . , Hamali, H., 2008. Blood testosterone level in Iranian Buffalo bulls and its relation with semen freezability. Journal of Animal and Veterinary Advances 7 (12), 1559-1562.
- Corteel, J.M., 1977. Production, storage and insemination of goat semen. In: Proceedings on Management of Reproduction in Sheep Goats Symposium, University of Wisconsin, Madison, pp. 41-57.
- Gundogan, M., 2007. Seasonal variation in serum testosterone, T3 and andrological parameters of two Turkish sheep breeds. Small Ruminant Research 67, 312-316.
- Gursoy, O., Pollott, G., Kirk, K., 2001. Milk production and growth performance of a Turkish Awassi flock when outcrossed with Israeli improved Awassi rams. Livestock Production Science 71, 31-36.
- Kridli, R.T., Abdullah, A.Y., Obeidat, B.S., Qudsieh, R.I., Titi, H.H., Awawdeh, M.S., 200 Seasonal variation in sexual performance of Awassi rams. Animal Reproduction 4, 38-41. Kridli, R.T., Abdullah, A.Y., Shaker, M.M., AlMomani, A.Q., 2006. Age at puberty and some biological parameters of Awassi and its first crosses with Charollais and Romanov rams. Italian Journal Animal Science 5, 193-202.
- Langford, G.A., Shrestha, J.N., Sanford, L . M . , Marcus, G.J., 1998. Reproductive hormone 112 Mohamed Ayoub, Mohammad Jihad Tabbaa, Mufeed Alnimer, Mohammad Ababneh levels of early postpubertal ram lambs in relation to breed, adult testis size and semen quality. Small Ruminant Research 29, 225-231.
- Robayo, I., Montenegro, V., Valde's, C . , Cox J . , 200 CASA assessment of kinematic parameters of ram spermatozoa and their relationship to migration efficiency in ruminant cervical mucus. Reproduction Domestic Animal 43, 393-399. Souza, M.I., Bicudo, S.D., Uribe-Velasquez, L . F . , Ramos, A.A., 2002. Circadian and circannual rhythms of T 3 and T 4 secretions in Polwarth¬ ideal ram. Small Ruminant Research 46, 1-5.
- SAS, 2004. Statistical Analysis Systems Institute, SAS User's Guide. SAS Institute Inc. Cary, NC., USA.
- Tabbaa, M.J., Kridli, R.T., Al-Ghalban, A.M., Barakeh, F.S., 2006a. Age-related changes in scrotal circumference and some semen characteristics in Awassi rams. Animal Reproduction 3 (4), 431-438.
- Tabbaa, M.J., Kridli, R.T., Amashe, M.G., Barakeh, F.S., 2006b. Factors affecting scrotal circumference and semen characteristics of
- Awassi rams. Jordan Journal of Agricultural Science 2 (3), 243-250. Taha, T.A., Abdel-Gawad, E . I . , Ayoub, M.A., 2000.
- Monthly variations in some reproductive parameters of Barki and Awassi rams throughout 1 year under subtropical conditions Semen characteristics and hormonal levels. Journal of Animal Science 71, 317-324. Todini, L . , 2007. Thyroid hormones in small ruminants: effects of endogenous, environmental and nutritional factors. Animal 1, 7, 997-1008.
- Zamiri, M.J., Khodaei, H.R., 2005. Seasonal thyroidal activity and reproductive characteristics of Iranian fat-tailed rams.
- Animal Reproduction Science 88, 245-255. Zarkawi, M., 2001. Oestrous synchronisation and twinning rate of Syrian Awassi ewes treated with progestagen and PMSG during the Breeding season. Journal of Agricultural Research 44, 159-163.
ÜRDÜN'DE YERE L V E ÇAPRAZ ISLAH ÇALIŞMALARI YAPILAN İVESİ IRKLARINDA PLAZMA TESTOSTERON, TİROİD DÜZEYLERİ VE SEMEN ÖZELLİKLERİNİN KARŞILAŞTIRILMASI
Öz
Bu çalışmada, Ürdün'de farklı yaşlardan İvesi koyunlarına ait farklı kökenlerin semen kalitesi ve plazma
testosteron (T), tetra-iodothyronine (T4) ve tri-iodothyronine (T3 ) düzeyleri değerlendirilmiştir. Nisan başından itibaren
Eylül sonuna kadar Ürdün'de Khanasry İstasyonu'nda bulunan 12 yerel İvesi koç (6'sı yetişkin ve 6'sı toklu) ve
7 çapraz ıslah çalışması yapılmış İvesi koçuna (4'ü yetişkin ve 3'ü toklu) ait fiziksel incelemeleri, sperm özellikleri ve
kan örnekleri değerlendirildi. Yerel İvesi koçlarında, çapraz ıslah çalışmaları yapılan İvesi koçlarına oranla daha geniş
(P < 0,01) ejakulat varlığı (EV) skalası (2,66 ± 0,14 ve 2,00 ± 0,19), kitle motilitesi (KM) (%75,8 ± 1,2 ve %70,2 ± 1,6)
ve daha yüksek (P < 0,001) canlı sperm yüzdesi; daha yüksek (P < 0,05) sperm konsantrasyonu (SK) ve progresif motilite (PM) saptanmıştır. Yerel İvesi koçlarında çapraz ıslah çalışmaları yapılan İvesi koçlarına oranla düşük
(P < 0,001) primer (PAb) ve sekunder (SAb) anormal sperm oluşumu belirlenmiştir. Yetişkin koçlarda toklu koçlardan
daha geniş (P < 0,05) ejekulat hacmi (EH), EV skalası, SK ve canlı sperm yüzdesi saptanmıştır. Toklu koçlarda yetişkin
koçlardan (1,75 nmol/L) daha yüksek (P < 0,001) plazma T3 seviyesi (2,05 nmol/L) belirlenmiştir. Haftalık
varyasyonlara bakıldığında her iki ırkta sperm özellikleri ve kan parametrelerinde anlamlı (P < 0,01) farklılıklar
saptanmıştır. Bu çalışma ile Ürdün'de yerel İvesi ırkı ile ıslah çalışmaları yapılan İvesi ırkının birlikte yetiştirilmesinin
semen kalitesini ve miktarını etkilemediği belirlenmiştir.
Kaynakça
- Alwan, A.F., 2009. Sheep fetal thyroid histological development, with adult Plasma T 4 and T 3 hormones concentrations. Journal of Animal and Veterinary Advances 8 (11), 2115-2117.
- Asadpour, R., Rezazadeh, F . , Hamali, H., 2008. Blood testosterone level in Iranian Buffalo bulls and its relation with semen freezability. Journal of Animal and Veterinary Advances 7 (12), 1559-1562.
- Corteel, J.M., 1977. Production, storage and insemination of goat semen. In: Proceedings on Management of Reproduction in Sheep Goats Symposium, University of Wisconsin, Madison, pp. 41-57.
- Gundogan, M., 2007. Seasonal variation in serum testosterone, T3 and andrological parameters of two Turkish sheep breeds. Small Ruminant Research 67, 312-316.
- Gursoy, O., Pollott, G., Kirk, K., 2001. Milk production and growth performance of a Turkish Awassi flock when outcrossed with Israeli improved Awassi rams. Livestock Production Science 71, 31-36.
- Kridli, R.T., Abdullah, A.Y., Obeidat, B.S., Qudsieh, R.I., Titi, H.H., Awawdeh, M.S., 200 Seasonal variation in sexual performance of Awassi rams. Animal Reproduction 4, 38-41. Kridli, R.T., Abdullah, A.Y., Shaker, M.M., AlMomani, A.Q., 2006. Age at puberty and some biological parameters of Awassi and its first crosses with Charollais and Romanov rams. Italian Journal Animal Science 5, 193-202.
- Langford, G.A., Shrestha, J.N., Sanford, L . M . , Marcus, G.J., 1998. Reproductive hormone 112 Mohamed Ayoub, Mohammad Jihad Tabbaa, Mufeed Alnimer, Mohammad Ababneh levels of early postpubertal ram lambs in relation to breed, adult testis size and semen quality. Small Ruminant Research 29, 225-231.
- Robayo, I., Montenegro, V., Valde's, C . , Cox J . , 200 CASA assessment of kinematic parameters of ram spermatozoa and their relationship to migration efficiency in ruminant cervical mucus. Reproduction Domestic Animal 43, 393-399. Souza, M.I., Bicudo, S.D., Uribe-Velasquez, L . F . , Ramos, A.A., 2002. Circadian and circannual rhythms of T 3 and T 4 secretions in Polwarth¬ ideal ram. Small Ruminant Research 46, 1-5.
- SAS, 2004. Statistical Analysis Systems Institute, SAS User's Guide. SAS Institute Inc. Cary, NC., USA.
- Tabbaa, M.J., Kridli, R.T., Al-Ghalban, A.M., Barakeh, F.S., 2006a. Age-related changes in scrotal circumference and some semen characteristics in Awassi rams. Animal Reproduction 3 (4), 431-438.
- Tabbaa, M.J., Kridli, R.T., Amashe, M.G., Barakeh, F.S., 2006b. Factors affecting scrotal circumference and semen characteristics of
- Awassi rams. Jordan Journal of Agricultural Science 2 (3), 243-250. Taha, T.A., Abdel-Gawad, E . I . , Ayoub, M.A., 2000.
- Monthly variations in some reproductive parameters of Barki and Awassi rams throughout 1 year under subtropical conditions Semen characteristics and hormonal levels. Journal of Animal Science 71, 317-324. Todini, L . , 2007. Thyroid hormones in small ruminants: effects of endogenous, environmental and nutritional factors. Animal 1, 7, 997-1008.
- Zamiri, M.J., Khodaei, H.R., 2005. Seasonal thyroidal activity and reproductive characteristics of Iranian fat-tailed rams.
- Animal Reproduction Science 88, 245-255. Zarkawi, M., 2001. Oestrous synchronisation and twinning rate of Syrian Awassi ewes treated with progestagen and PMSG during the Breeding season. Journal of Agricultural Research 44, 159-163.
Ayrıntılar
| Birincil Dil | İngilizce |
|---|---|
| Bölüm | Araştırma Makalesi |
| Yazarlar | |
| Yayımlanma Tarihi | 16 Kasım 2012 |
| Yayımlandığı Sayı | Yıl 2013 Cilt: 39 Sayı: 1 |