Research Article

Investigation of the Effect of Different Hormone Applications on Pregnancy Rates in Repeat Breeder Cows

Volume: 9 Number: 3 December 31, 2024
EN TR

Investigation of the Effect of Different Hormone Applications on Pregnancy Rates in Repeat Breeder Cows

Abstract

The current study aimed to investigate the effects of GnRH during insemination and progesterone administration on conception on the fourth- and fifth days following insemination in Repeat Breeder (RB) cows. The study included 40 Holstein breed RB cows housed under identical care and feeding circumstances. The animals were divided into four groups: group I (GnRH administered immediately after insemination), group II (GnRH administered immediately after insemination + progesterone administered on days 4 and 5 after insemination), group III (progesterone administered on days 4 and 5 after insemination), and group IV (control). All animals in the study had their ovulation checked at the 24th and 36th hours after insemination, and the pregnancy was examined by USG on the 45th day. The initial estrus of non-pregnant animals and their days were established. The ovulation rates at the 24th hour was 70% in group I, 90% in group II, 50% in group III, and 50% in group IV, whereas in the 36th hour they were 30% in group I, 10% in group II, 50% in group III, and 50% in group IV, respectively. The pregnancy rates were 70% in group I, 80% in group II, 60% in group III, and 30% in group IV. The untreated control group had lower pregnancy rates (p < 0.05) compared to the treatment groups. As a result, higher pregnancy rates were seen in the treatment groups compared to the control group, indicating that three distinct treatments can be used to increase pregnancy rates in RB cows.

Keywords

Ethical Statement

Sunulan çalışma sorumlu yazarın doktora tezinden özetlenmiş, bu tez İstanbul Üniversitesi Sağlık Bilimleri Enstitüsü tarafından 30.05.2003 tarihinde kabul edilmiştir. O yıllarda Etik kurul onayı alma zorunluluğu bulunmamaktaydı ve yetkili Enstitü tarafından istenmemekteydi. (Hayvan deneyleri yerel etik kurul belgesi alma zorunluluğu Çevre ve Orman Bakanlığının 06.07.2006 tarihli 26220 sayılı resmi Gazete yayınlanan HAYVAN DENEYLERİ ETİK KURULLARININ ÇALIŞMA USUL VE ESASLARINA DAİR YÖNETMELİK ile getirilmiştir)

References

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Details

Primary Language

English

Subjects

Veterinary Sciences (Other)

Journal Section

Research Article

Early Pub Date

December 29, 2024

Publication Date

December 31, 2024

Submission Date

August 2, 2024

Acceptance Date

October 4, 2024

Published in Issue

Year 2024 Volume: 9 Number: 3

APA
Yenilmez, K. (2024). Investigation of the Effect of Different Hormone Applications on Pregnancy Rates in Repeat Breeder Cows. Instıtute of Health Sciences Journal, 9(3), 319-322. https://doi.org/10.51754/cusbed.1527113
AMA
1.Yenilmez K. Investigation of the Effect of Different Hormone Applications on Pregnancy Rates in Repeat Breeder Cows. J Cumhuriyet Univ Health Sci Inst. 2024;9(3):319-322. doi:10.51754/cusbed.1527113
Chicago
Yenilmez, Kudret. 2024. “Investigation of the Effect of Different Hormone Applications on Pregnancy Rates in Repeat Breeder Cows”. Instıtute of Health Sciences Journal 9 (3): 319-22. https://doi.org/10.51754/cusbed.1527113.
EndNote
Yenilmez K (December 1, 2024) Investigation of the Effect of Different Hormone Applications on Pregnancy Rates in Repeat Breeder Cows. Instıtute of Health Sciences Journal 9 3 319–322.
IEEE
[1]K. Yenilmez, “Investigation of the Effect of Different Hormone Applications on Pregnancy Rates in Repeat Breeder Cows”, J Cumhuriyet Univ Health Sci Inst, vol. 9, no. 3, pp. 319–322, Dec. 2024, doi: 10.51754/cusbed.1527113.
ISNAD
Yenilmez, Kudret. “Investigation of the Effect of Different Hormone Applications on Pregnancy Rates in Repeat Breeder Cows”. Instıtute of Health Sciences Journal 9/3 (December 1, 2024): 319-322. https://doi.org/10.51754/cusbed.1527113.
JAMA
1.Yenilmez K. Investigation of the Effect of Different Hormone Applications on Pregnancy Rates in Repeat Breeder Cows. J Cumhuriyet Univ Health Sci Inst. 2024;9:319–322.
MLA
Yenilmez, Kudret. “Investigation of the Effect of Different Hormone Applications on Pregnancy Rates in Repeat Breeder Cows”. Instıtute of Health Sciences Journal, vol. 9, no. 3, Dec. 2024, pp. 319-22, doi:10.51754/cusbed.1527113.
Vancouver
1.Kudret Yenilmez. Investigation of the Effect of Different Hormone Applications on Pregnancy Rates in Repeat Breeder Cows. J Cumhuriyet Univ Health Sci Inst. 2024 Dec. 1;9(3):319-22. doi:10.51754/cusbed.1527113

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