Induction of cyclicity in dairy cows using GnRH (Gonadotropin releasing hormone) in the region of Batna, Algeria

Meziane, Rahla; Niar, Abdellatif; Boughris, Farid; Meziane, T.; Mamache, Bakir; Smadi, Mustapha Adnane

doi:10.1080/09291016.2018.1528687

Cited by 3 publications

(4 citation statements)

References 17 publications

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“…The present results were in harmony with those of Ingawale and Bakshi (2016) who indicated that the treatment of buffalos with PGF2α or GnRH post-calving reduced the average days required for exhibition to first postpartum estrus significantly compared with the control group. Meziane et al (2018) and Abou-Aiana et al (2019) showed that when cows treated with PGF2α and GnRH after calving, the interval from calving to first estrus was reduced significantly (p < 0. 0001) as compared to control group.…”

Section: Postpartum First Estrus (Ppfe) Days Open (Do) and Number Of ...mentioning

confidence: 98%

“…In a previous study, Shah et al (1990) found that the treatment of Nili-Ravi buffalos with a single intramuscular injection of 100 µg gonadotrophin releasing hormone (GnRH) or 250 µg GnRH on day 14 post-partum reduces the time required for complete uterine involution. Moreover, Meziane et al (2018) evaluated the effect of the GnRH induction of cyclicity in Holstein dairy cows during the postpartum period and found that 90 % of the treated cows possess a pelvic uterine position than the control ones. In this respect, Sharawy et al (2015) found that cows treated immediately after calving with 625 µg of a synthetic PGF2α or 20 µg of GnRH analogue showed earlier uterine involution as compared to the control.…”

Section: Drop Of Fetal Membranes (Dfm) Uterine Involution (Ui) Uterin...mentioning

confidence: 99%

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Postpartum reproductive performance and blood parameters of Egyptian buffalos treated with some hormones and propylene glycol, or their combination

Abdel-Hakeem

Badr²,

Ashour³

et al. 2022

Al-Azhar Journal of Agricultural Research

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This experimental work aims to evaluate the efficacy of supplying prostaglandin F2α (PGF2α) and gonadotropin-releasing hormone (GnRH), propylene glycol (PG), or their combination on reproductive performance and some blood parameters of postpartum (PP) Egyptian buffaloes. A total of 32 postpartum Egyptian buffaloes were divided into 4 groups. Buffaloes in group 1 (G1) had no treatment. Group 2 (G2) was injected with PGF2α (at Day 0, calving day) and GnRH (At Day 15 PP). Animals in group 3 (G3) received oral doses of PG (300 ml) at 0-, 3-, 6-, 9-, 12-and 15-days PP. Animals in group 4 (G4) were given combination of G2 and G3 treatments. The results showed a significant improve in all reproductive traits of buffaloes treated with hormones, PG and their combination compared to the control group, exemplified with significant increase in blood total protein, albumin, globulin, total lipid, and cholesterol, and insignificant increase in triglyceride. The levels of creatinine and transaminases were decreased compared to control group. In conclusion, PGF2α + GnRH treatment, PG treatment, or their combination improved the reproductive performance and blood parameters of the postpartum Egyptian buffalo.

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Section: Postpartum First Estrus (Ppfe) Days Open (Do) and Number Of ...mentioning

confidence: 98%

Section: Drop Of Fetal Membranes (Dfm) Uterine Involution (Ui) Uterin...mentioning

confidence: 99%

Postpartum reproductive performance and blood parameters of Egyptian buffalos treated with some hormones and propylene glycol, or their combination

Abdel-Hakeem

Badr²,

Ashour³

et al. 2022

Al-Azhar Journal of Agricultural Research

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“…GnRH administration has improved reproductive efficiency by reducing the calving-to-conception period and the number of inseminations per conception [ 106 ]. GnRH treatment during the postpartum period improves ovarian functions early in the postpartum period, leading to a shorter calving-to-estrous interval, approximately 44.6 ± 9.2 days in GnRH-treated cows compared to untreated ones (110.4 ± 50.4) [ 107 ]. Single administrations of GnRH analogs between days 21 and 31 postpartum induce LH surges and ovulation, showcasing their potential to improve reproductive outcomes [ 108 ].…”

Section: Postpartum Ovulation Inductionmentioning

confidence: 99%

Gonadotropin-Releasing Hormone (GnRH) and Its Agonists in Bovine Reproduction II: Diverse Applications during Insemination, Post-Insemination, Pregnancy, and Postpartum Periods

Hassanein,

Szelényi,

Szenci

2024

Animals

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The administration of GnRH and its agonists benefits various aspects of bovine reproductive programs, encompassing physiological stages such as estrous synchronization, post-insemination, pregnancy, and the postpartum period. The positive impact of GnRH administration in overcoming challenges like repeat breeder cows, early embryonic loss prevention, and the management of cystic ovarian disease (COD) is thoroughly surveyed. Furthermore, this review focuses on the significance of GnRH administration during the postpartum period, its role in ovulation induction, and how it enhances the productivity of embryo transfer (ET) programs. An emerging feature of this field is introduced, focusing on nano-drug delivery systems for GnRH agonists, and the potential benefits that may arise from such advancements are highlighted. While this review offers valuable insights into various applications of GnRH in bovine reproduction, it emphasizes the crucial need for further research and development in this field to advance reproductive efficiency and health management in dairy cattle.

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“…54, (Special Issue) (2023) GnRH treatment improved ovulation rate. As a result, it appears that GnRH's capacity to ovulation and CL function in post calving dairy cows are induced will be highest in cows that successfully limit the severity and length of negative energy balance issues [13]. Cows with the most negative energy balance and post-calving ovarian inactivity, on the other hand, would benefit the most from a prospective medication such as GnRH to induce ovulation and start the estrous cycle [14].…”

Section: Reproductive Traitsmentioning

confidence: 99%

Effect of Using Low Doses of PGF2α and GnRH Hormones on Reproduction of Dairy Cows

Abuelhamd,

Metwally,

Ghallab

et al. 2023

Egyptian Journal of Veterinary Sciences

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HE research aims to improve reproductive performance of repeat breeder or anestrous cows using PGF2 α and GnRH through in intra vulva injection. In this study, 30 Friesian dairy cows were not conceiving for a period ranging from 120 to 250 days after calving. Cows divided into three groups, 10 cows in each group and were subjected to the following protocols. Group1 (G1): was injected with 50 μg GnRH on Day 0 and 5 mg PGF2α on Day 7 then the oestrus cycle was monitored. Group 2 (G2): cows were injected twice 5 mg PGF2α, 11 days apart. Group 3 (G3): was injected with 50 μg GnRH at Day 0, 5 mg PGF2α, at Day 7 and then injected with 50 μg GnRH at day 9 and fixed timed artificial insemination (TAI) was performed 16 to 18 h. The results showed that, exhibited oestrus 100, 90 and 80% in G3, G2 and G1, respectively. Pregnancy rates were significantly highest in G3 and G2 than in G1. The progesterone (P4) concentration on day 24 post-insemination was 10.253, 11.235 and 11.567 ng/ml in pregnant versus were 3.245, 1.985 and 2.036 ng/ml in non-pregnant cows in G1, G2 and G3, respectively. Progesterone concentration at 2 nd GnRH or PGF 2 α injections were significantly lower in pregnant cows than in non-pregnant cows in G1, G2 and G3 groups. The economic evaluation was shown that 2 PGF 2α protocols had the cheapest cost (L.E 21/animal) highest pregnant cows.

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Induction of cyclicity in dairy cows using GnRH (Gonadotropin releasing hormone) in the region of Batna, Algeria

Cited by 3 publications

References 17 publications

Postpartum reproductive performance and blood parameters of Egyptian buffalos treated with some hormones and propylene glycol, or their combination

Postpartum reproductive performance and blood parameters of Egyptian buffalos treated with some hormones and propylene glycol, or their combination

Gonadotropin-Releasing Hormone (GnRH) and Its Agonists in Bovine Reproduction II: Diverse Applications during Insemination, Post-Insemination, Pregnancy, and Postpartum Periods

Effect of Using Low Doses of PGF2α and GnRH Hormones on Reproduction of Dairy Cows

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