Influence of Different Estrus Induction Protocols on Fertility Improvement in Dangi Cows

Pawshe, C. H.; Shelar, R. R.; Ambhore, G. S.; Kapadnis, P.J.

doi:10.5455/ijlr.20200701084526

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“…Supplementation of P4 via CIDR insertion was more effective because of lower peripheral concentration of P4 which resulted in greater secretion and follicular growth during P4 treatment (Bergfeld et al, 1996b). Progesterone supplementation with or without eCG produced more favorable results in heifers (Khade et al, 2011;Pawshe et al, 2020). The eCG was used at doses of 300-800 IU for the induction of folliculogenesis, early onset of puberty, treatment of anoestrous, and induction of superovulation for embryo transfer (Murphy, 2018;Naseer et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Progesterone-based hormonal treatments to induce and synchronize the onset of puberty in buffalo-heifers

Abouel-Ghaitb

2021

Kafrelsheikh Veterinary Medical Journal

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Objective:The present work aimed to study the effect of progesterone (CIDR)-based GnRH treatments plus eCG (1000 or 500 IU) on inducing and synchronizing the onset of puberty in buffalo-heifers. Methods: Buffalo-heifers (n=28) were randomly allocated into four treatment protocols (7 each): (G1, CIDR-eCG1000-GnRH), (G2, CIDR-eCG 500-GnRH), (G3, CIDR-GnRH) and (G4, CIDR-alone). The largest follicle diameter (LFD) and antral follicles counts (AFC) of small (≤ 4mm), medium (> 4mm-≤8mm) and large follicles (>8mm) were estimated by transrectal ultrasonography on Days 0, 8, and 11. Also, the LFD was estimated on Day 13 as well. Results: On Day 11, the AFC of both small and medium-sized follicles was higher in G1 compared with G2 (P < 0.05) and with both G3 and G4 (P < 0.01). The AFC of large follicles was the greatest (P < 0.05) in G1compared with all groups but did not differ among G2, G3, and G4 on Day 11. On Day 13, the LFD showed non-significant variation between G1 and G2 as well as between G3 and G4. It showed a significant increase in G1 (P < 0.01) and G2 (P < 0.05) compared with either G3 or G4. The conception rate was the highest (P<0.05) in G1 compared with all groups. Conclusion: It could be concluded that the incorporation of eCG at a dose of 1000 IU in P4 (CIDR) based together with GnRH treatment protocol induces and synchronizes puberty in buffalo-heifers at the age of puberty.

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Section: Introductionmentioning

confidence: 99%

Progesterone-based hormonal treatments to induce and synchronize the onset of puberty in buffalo-heifers

Abouel-Ghaitb

2021

Kafrelsheikh Veterinary Medical Journal

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show abstract

Influence of Different Estrus Induction Protocols on Fertility Improvement in Dangi Cows

Cited by 1 publication

References 0 publications

Progesterone-based hormonal treatments to induce and synchronize the onset of puberty in buffalo-heifers

Progesterone-based hormonal treatments to induce and synchronize the onset of puberty in buffalo-heifers

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