تعداد نشریات | 49 |
تعداد شمارهها | 1,846 |
تعداد مقالات | 19,516 |
تعداد مشاهده مقاله | 9,298,423 |
تعداد دریافت فایل اصل مقاله | 6,534,037 |
Effects of subcutaneous progesterone injection as a short-time estrus synchronization protocol in ewes: a preliminary study | ||
Iranian Journal of Veterinary Science and Technology | ||
دوره 14، شماره 1 - شماره پیاپی 26، تیر 2022، صفحه 39-44 اصل مقاله (538.75 K) | ||
نوع مقاله: Research Articles | ||
شناسه دیجیتال (DOI): 10.22067/ijvst.2022.73754.1099 | ||
نویسندگان | ||
Behnam Valizadeh؛ Masoud Rajabioun؛ Mohammad Azizzadeh؛ babak Khoramian toosi* | ||
Department of Clinical Sciences, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran. | ||
چکیده | ||
The present study aimed to evaluate the effect of short-time progesterone injection subcutaneously (SC) on estrus synchronization of Baluchi ewes. All ewes received one dose of PGF2α (15 mg) and then were divided into two groups. In the P4 group, a combination of progesterone and propylene glycol was subcutaneously injected twice at the three-day interval, and a vaginal sponge was used in the control group for 6 days. On day 6, all ewes received 400 IU of eCG. 48h after eCG injection, two rams were introduced into the flock. Blood samples were taken daily from Day 0 to Day 13 to measure serum progesterone concentration. Ultrasonography was used to observe ovaries and monitor their changes at three-day intervals. In P4 and control groups, the estrus rate was 88.9% and 100% for P4 and control groups, respectively; the duration of estrus for the P4 and control groups was 8 and 8.5 days, respectively (p >0.05). No significant difference was observed in the size of the largest follicle and the number of follicles more than 2 mm in diameter between the treatment and control groups. Further studies with some changes and modifications are required for gaining acceptable fertility and prolificacy rates. | ||
کلیدواژهها | ||
Estrus؛ synchronization؛ ewe, progesterone؛ short-time protocol | ||
سایر فایل های مرتبط با مقاله
|
||
مراجع | ||
1. Swelum AA, Saadeldin IM, Moumen AF, Ali MA, Alowaimer AN. Efficacy of controlled internal drug release (CIDR) treatment durations on the reproductive performance, hormone profiles, and economic profit of Awassi ewes. Small Ruminant Research. 2018; 166:47-52. 2. Knights M, Ramgattie R, Siew N, Singh-Knights D, Bourne G. Effectiveness of a short-term treatment with progesterone injections on synchrony of lambing and fertility in tropical hair sheep. Animal reproduction science. 2011;126(1-2):70-5. 3. Viñoles C, Forsberg M, Banchero G, Rubianes E. Effect of long-term and short-term progestagen treatment on follicular development and pregnancy rate in cyclic ewes. Theriogenology. 2001; 55(4):993-1004. 4. Sareminejad P, Tabatabaei S, Mamouei M, Mirzadeh K, Boujarpour M. The effects of short and long term medroxy progesterone acetate (MAP) sponge treatments on reproductive performance during the non-breeding season of arabian ewes. Iranian Journal of Applied Animal Science. 2014; 4(4):747-51. 5. Ataman MB, Akoz M, Akman O. Induction of synchronized oestrus in Akkaraman cross-bred ewes during breeding and anestrus seasons: the use of short-term and long-term progesterone treatments. Revue de médecine vétérinaire. 2006; 157(5):257-60. 6. Contreras-Solis I, Gomez-Brunet A, Encinas T, Gonzalez-Bulnes A, Santiago-Moreno J, Lopez-Sebastian A. Influence of vehicle on kinetics of exogenous progesterone administered either by subcutaneous and intramuscular routes to sheep. Research in veterinary science. 2008; 85(1):162-5. 7. Ungerfeld R, Rubianes E. Short term primings with different progestogen intravaginal devices (MAP, FGA and CIDR) for eCG-estrous induction in anestrus ewes. Small Ruminant Research. 2002; 46(1):63-6. 8. Dixon AB, Knights M, Pate JL, Lewis PE, Inskeep EK. Reproductive performance of ewes after 5‐day treatment with intravaginal inserts containing progesterone in combination with injection of prostaglandin F2α. Reproduction in Domestic Animals. 2006; 41(2):142-8. 9. Pearce DT, Robinson TJ. Plasma progesterone concentrations, ovarian and endocrinological responses and sperm transport in ewes with synchronized oestrus. Reproduction. 1985; 75(1):49-62. 10. Knights M, Ramgattie R, Siew N, Singh-Knights D, Bourne G. Effectiveness of a short-term treatment with progesterone injections on synchrony of lambing and fertility in tropical hair sheep. Animal reproduction science. 2011; 126(1-2):70-5. 11. Robinson TJ, Smith JF. The time of ovulation after withdrawal of SC-9880-impregnated intravaginal sponges from cyclic Merino ewes. The time of ovulation after withdrawal of SC-9880-impregnated intravaginal sponges from cyclic Merino ewes. 1967. 12. Johnson SK, Dailey RA, Inskeep EK, Lewis PE. Effect of peripheral concentrations of progesterone on follicular growth and fertility in ewes. Domestic Animal Endocrinology. 1996; 13(1):69-79. 13. Evans AC. Ovarian follicle growth and consequences for fertility in sheep. Animal Reproduction Science. 2003; 78(3-4):289-306. | ||
آمار تعداد مشاهده مقاله: 2,331 تعداد دریافت فایل اصل مقاله: 6,076 |