Journals / Türk Tarım - Gıda Bilim ve Teknoloji dergisi / 2017 / Cilt: 5 - Sayı: 4

Annual Change of Reproductive Hormones in Female Angora Goats

Pages
343–348
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

According the results of this study, could be concluded that the releases of reproductive hormones examined in female Angora goats was seasonally dependent

📌 3 Key Takeaways

🎯
Objective & Hypothesis:In this research, annual changes of melatonin, gonadotropin-releasing hormone, follicle stimulating hormone, luteinizing hormone, estrogen, testosterone and progesterone were studied on 6 heads of 1.5 years old female Angora goat.
📊
Key Findings & Data:The blood samples were centrifuged at 4000xg for 5 min. and serum was stored at -20°C until analyses time.
💡
Conclusion & Impact:According the results of this study, could be concluded that the releases of reproductive hormones examined in female Angora goats was seasonally dependent
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

In this research, annual changes of melatonin, gonadotropin-releasing hormone, follicle stimulating hormone, luteinizing hormone, estrogen, testosterone and progesterone were studied on 6 heads of 1.5 years old female Angora goat. To determine hormones concentrations, blood samples were taken from jugular vein of each goat in every month for a year. The blood samples were centrifuged at 4000xg for 5 min. and serum was stored at -20°C until analyses time. Hormones analyses in the serum were performed by enzyme immunoassay (EIA) method. Monthly climatic values and photoperiod were obtained from the Turkish State Meteorological Service and temperature-humidity index was calculated with climatic values. In the study, in order to determine any possible differences in the observed hormones concentrations with respect to months, repeated measures ANOVA analysis was performed. As a result of statistical analysis, there were no significant differences among the months for gonadotropin-releasing hormone, follicle stimulating hormone and testosterone concentration, while significant differences were found among the months for melatonin, luteinizing hormone and progesterone, and estrogen concentration in female Angora goats. According the results of this study, could be concluded that the releases of reproductive hormones examined in female Angora goats was seasonally dependent

🔖

Cite This Article

PEHLİVAN, E., POLAT, H., DELLAL, G. (2017). Annual Change of Reproductive Hormones in Female Angora Goats. Türk Tarım - Gıda Bilim ve Teknoloji dergisi, Cilt: 5 - Sayı: 4, 343–348. https://ajindex.com/articles/331531

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (7)

  1. Abecia JA, Forcada F, Gonzalez-Bulnes A. 2012. Hormonal control of reproduction in small ruminants. Animal Reproduction Science 130: 173– 179. Alaçam E, Güven B, Ayar A, Saban E. 1999. Effect of gonadoreline administration on blood progesterone, oestradiol 17β concentration and some fertility parameters in Angora goats. Tr. J. of Veterinary and Animal Sciences 23: 77-81.
  2. Alila-Johansson A, Eriksson L, Soveri T, Laakso ML. 2001. Seasonal variation in endogenous serum melatonin profiles in goats: A difference between spring and fall? Journal of Biological Rhythms (16)2: 254-263.
  3. Anderson RR, Harnes JR, Snead AF, Salah MS. 1981. Mammary growth pattern in goats during pregnancy and lactation. J Dairy Sci. 64: 427-432.
  4. Bartlewski PM, Baby TE, Giffin JL. 2011. Reproductive cycle of sheep. Animal Reproduction Science, 124(3-4): 259–268. Błaszczyk B, Udała J, Gaczarzewicz D. 2004. Changes in estradiol, progesterone, melatonin, prolactin and thyroxine concentrations in blood plasma of goats following induced estrus in and outside the natural breeding season. Small Ruminant Research 51: 209– 219. Bono G, Cairoli F, Tamanini C, Abrate L. 1983. Progesterone, estrogen, LH, FSH and PRL concentrations in plasma during the estrous cycle in goat. Reprod. Nutr. Develop. 23(2A): 217- 222. Chemineau P, Malpaux B, Delgadillo JA, Guerin Y, Ravault JP, Thimonier J, Pelletier J. 1992. Control of sheep and goat reproduction: Use of light and melatonin. Anim. Reprod. Sci. 30: 157-184.
  5. Chemineau P, Pelletier J, Guerin Y, Colas G, Ravault JP, Toure G, Almeida G, Thimonier J, Ortovant R. 1988. Photoperiodic and melatonin treatments for the control of seasonal reproduction in sheep and goats. Reprod. Nutr. Develop. 28(2B): 409-422.
  6. Delgadillo JA, Canedo GA, Chemineau P, Guillaume D, Malpaux B, 1999. Evidence for an annual reproductive rhythm independent of foot availability in male Creole Goats in subtropical northern Mexico. Theriogenology 52(4): 727-737.
  7. Dellal G, Cedden F. 2002. Seasonality of reproduction and reproduction and photoperiod relationships in sheep and goat. Hayvansal Üretim 43(1): 64-73 (in Turkish). Dicks P. 1994. The role of prolactin and melatonin in regulating the timing of the spring moult in the Cashmere goat. European Fine Fiber Network, Occasional Publication No. 2. Gürbüz F, Baspinar E, Camdeviren H, Keskin S. 2003. Analysis of the repeated measurement experiments. Yüzüncü Yıl University Publications, Van, Turkey (in Turkish). Fatet A, Pellicer-Rubio MT, Leboe