Scopus
YÖKSİS ISSN Eşleşti
SJR Q2
The effect of double-dose GnRH injections on reproductive performance parameters following short-term progestagen administration in lactated Awassi ewes during the non-breeding season
Tropical Animal Health and Production · Haziran 2021
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Makale Bilgileri
ISSN00494747
Yayın TarihiHaziran 2021
Cilt / Sayfa53
Scopus ID2-s2.0-85104671177
Özet
The present study was aimed to investigate the effects of double-dose gonadotropin-releasing hormone (GnRH) injection on the induction of oestrus and some reproductive performance parameters in Awassi ewes during the non-breeding season. In the study, 100 ewes were treated with a vaginal sponge containing 60 mg medroxyprogesterone acetate for 7 days in the anoestrus (day 0). PMSG 500 IU and 250 μg cloprostenol sodium were injected on the day of removal of the sponge (day 7). Ewes in Group 1 (n = 31) were not subjected to any hormonal treatment. Ewes in Group 2 (n = 31) were given 50 μg GnRH 48th hour after removal of the sponge. Ewes in Group 3 (n = 33) were given 50 μg GnRH 48th hour after the removal of the sponge and 50 μg GnRH 12th day after post-mating. The results obtained in the study showed that there were no statistical differences between the Groups 1, 2 and 3 in terms of oestrus rates (82.8%, 68.9%, 72.7%), conception rates (66.7%, 55.0%, 54.2%), multiple pregnancy rates (28.5%, 50.0%, 30.7%) and litter sizes (1.28, 1.50, 1.31). No significant increases in P4 concentration were observed in Group 3 treated with GnRH at the 12th day after post-mating; however, a numerically lower (p > 0.05) late embryonic-early fetal mortality rate was observed in Group 3 (0%), when compared with the values obtained in Group 1 (12.5%) and Group 2 (9.1%). In conclusion, after short-term progestagen administration during the non-breeding season, double-dose GnRH injections did not increase P4 concentration and had no significant differences on reproductive performance parameters among groups.
Yazarlar (2)
1
Metehan Kutlu
ORCID: 0000-0002-1782-583X
2
D. A. Dinc
ORCID: 0000-0002-9597-227X
Anahtar Kelimeler
Awassi ewes
Embryonic mortality
GnRH
Litter size
Progesterone
Kurumlar
Adana Metropolitan Municipality
Adana Turkey
Selçuk Üniversitesi
Selçuklu Turkey
Scimago Dergi (ISSN Eşleşmesi)
Tropical Animal Health and Production
Q2
SJR Skoru0,472
H-Index73
YayıncıSpringer Science and Business Media B.V.
ÜlkeNetherlands
Animal Science and Zoology (Q2)
Food Animals (Q2)
Metrikler
12
Atıf
2
Yazar
5
Anahtar Kelime