Is one-wave follicular growth during the estrous cycle a usual phenomenon in water buffaloes (Bubalus bubalis)?

Awasthi, Mukesh Kumar; Khare, Anakshi; Kavani, F. S.; Siddiquee, G. M.; Panchal, M. T.; Shah, R. R.

doi:10.1016/j.anireprosci.2005.05.024

Cited by 13 publications

(27 citation statements)

References 23 publications

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“…The follicular wave pattern in the Surti breed of buffaloes was observed similar as reported in Mehsana breed by Awasthi et al (). Surti buffaloes evidenced a preponderance of one‐wave follicular growth cycle in 66.6% of buffaloes, and the growth rate of the dominant follicle was significantly lower in a one‐wave cycle compared to a two‐wave cycle.…”

Section: Discussionsupporting

confidence: 85%

Follicular dynamics and colour Doppler vascularity evaluations of follicles and corpus luteum in relation to plasma progesterone during the oestrous cycle of Surti buffaloes

Gaur

Purohit

2019

Reprod Domestic Animals

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Contents With an objective to evaluate the follicular dynamics and vascularity changes in follicles and corpus luteum, the ovaries of cyclic Surti buffaloes (n = 9) were examined daily sequentially by transrectal B‐mode and colour flow mode (CFM) ultrasonography starting from the day of oestrus till the onset of next oestrus. Higher proportion of buffaloes evidenced one‐wave cycle (66.66%) compared to two‐wave cycle (33.34%) with none showing a three‐wave cycle. The dominant follicle of the first follicular wave was the ovulatory follicle and persisted for 19.70 ± 0.50 days compared to its persistence for 16.5 ± 1.45 days in a two‐wave cycle. The maximum diameter of the ovulatory follicle in a one‐wave and two‐wave cycle did not differ yet their linear growth rates were significantly lower (p < 0.01) in a one‐wave cycle. Colour flow mode examination of follicles revealed that the percentage of follicles with detectable blood flow in the subsequently determined largest follicle (dominant follicle) was not different from that in the second largest follicle before follicle deviation. The blood flow in the dominant follicle increased significantly on the day of oestrus. The mean diameter and blood flow to the corpus luteum (CL) increased linearly and significantly from Day 5 of oestrus till Day 13 after which both parameters started declining. At or around Day 16, there was precipitous fall in the blood supply to the CL and CL diameter that continued declining thereafter to reach the lowest around Day 20 of the oestrous cycle. Rise in plasma progesterone concentrations was synchronous to CL diameter and vascularity and showed significant and positive correlations. It was concluded that Surti buffaloes evidence a preponderance of one‐wave follicular growth pattern with a significant increase in the vascularity of ovulatory follicle on the day of oestrus and corpus luteum on Day 13 of the oestrous cycle.

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Section: Discussionsupporting

confidence: 85%

Follicular dynamics and colour Doppler vascularity evaluations of follicles and corpus luteum in relation to plasma progesterone during the oestrous cycle of Surti buffaloes

Gaur

Purohit

2019

Reprod Domestic Animals

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“…2006). Suckled water buffaloes have been characterized by a one‐wave pattern of follicle development, an initial slow growth rate of the dominant follicle, followed by regression and the final re‐growth phase, culminating in ovulation (Awasthi et al. 2006).…”

Section: Female Reproductive Function and Assisted Reproductive Technmentioning

confidence: 99%

“…Together with a wide variability in the length of oestrous cycles, behavioural oestrus has been associated with high progesterone levels (Danell 1987; Vale et al. 1988) and silent oestrus to the slow follicular growth of the ovulatory follicle (Awasthi et al. 2006).…”

Section: Female Reproductive Function and Assisted Reproductive Technmentioning

confidence: 99%

Reproduction in the Water Buffalo

Presicce

2007

Reprod Domestic Animals

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In this paper, an account of various aspects related to buffalo reproduction are given. Fundamental concepts of the reproductive physiology as well as manipulation of the reproductive function will be presented. This will include an overview of the most recent developments of the oestrous cycle and the ovulation control, new strategies of reproductive management for the improvement of genetic gain and the application of newly developed reproductive technologies, such as in vitro embryo production, embryo and sperm sexing and cloning.

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“…A taxa de crescimento do folículo dominante entre o D7 e D9 apresentada pelos animais do G1 (2,05 ± 0,49 mm/dia) foi significativamente menor àquela apresentada pelos animais do G2 (3,48 ± 0,41 mm/dia; P<0,05). A taxa de crescimento diário folicular dos animais do G1 foi semelhante às taxas de 1,27 mm/dia e 1,07 ± 0,07 mm/dia relatadas por Presicce et al (2004) e Presicce et al (2005b), porém foi maior que a taxa de crescimento linear de 0,86 ± 0,31 mm/dia encontrada entre o D0 e D10 por Awasthi et al (2006). A taxa de crescimento do folículo dominante observada nos animais do G2 superou as taxas de crescimento diário pelos referidos autores.…”

Section: Resultsunclassified

“…O conhecimento mais profundo da atividade folicular durante o processo de sincronização do estro pode fornecer informações capazes de melhorar a fertilidade dos estros sincronizados, realçando a resposta ao controle hormonal exógeno, tendo em vista que os eventos de recrutamento, seleção, crescimento, dominância e atresia dos folículos ovarianos não estão completamente compreendidos nos bubalinos (Awasthi et al, 2006).…”

Section: Introductionunclassified

Associação da medroxiprogesterona ao protocolo Ovsynch para inseminação artificial em tempo fixo de búfalas cíclicas (Bubalus bubalis) criadas na Amazônia Oriental

et al. 2008

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The aim of this study was to evaluate the effect of the association of medroxyprogesterone with the Ovsynch protocol on the follicular growth, ovulation, and conception rate of buffaloes in the Eastern Amazon (Tracuateua-PA). Twenty-seven cyclic, non-lactating females (G1 n=14 and G2 n=13) with a 3.5 BCS were synchronized with the Ovsynch. Animals from G2 received a supplementation of 60 mg of medroxyprogesterone from D0 to D7 (D0=starting day of treatment). Ultrasonography evaluation on ovaries was realized on Days 0, 7, 9, and 10. A significant effect of treatment on follicle number was observed on D7 (G1: 4.57±0.60 versus G2: 6.54±0.67; P=0.05). Time and treatment influenced follicular diameter on D7. The growth of the dominant follicular was increased from D7 to D9 on treated females (G1: 2.05±0.49 mm/day versus 3.48±0.41 mm/ day; P<0.05). G1 animals (35.71% versus 30.77%) ovulated comparatively earlier than their G2 counterparts, but this did not affect the conception rates (G1: 50,00% and G2: 30,77%; P>0,05). The findings suggest that medroxyprogesterone: (1) increases follicular recruitment and inhibits the growth of follicles whose diameter was larger than 5.0mm from D0 to D7; (2) the withdrawal of medroxyprogesterone speeds up follicular growth 1.7 fold from D7 to D9; (3) would probably contribute to the ovulation of larger follicles thereby forming more luteal tissue; (4) does not stimulate early ovulation after Ovsynch; and (5) does not elevate the conception rate after the synchronization of cyclic females with good body condition, and should be evaluated for the utilization in acyclic/reduced BCS females.

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Is one-wave follicular growth during the estrous cycle a usual phenomenon in water buffaloes (Bubalus bubalis)?

Cited by 13 publications

References 23 publications

Follicular dynamics and colour Doppler vascularity evaluations of follicles and corpus luteum in relation to plasma progesterone during the oestrous cycle of Surti buffaloes

Follicular dynamics and colour Doppler vascularity evaluations of follicles and corpus luteum in relation to plasma progesterone during the oestrous cycle of Surti buffaloes

Reproduction in the Water Buffalo

Associação da medroxiprogesterona ao protocolo Ovsynch para inseminação artificial em tempo fixo de búfalas cíclicas (Bubalus bubalis) criadas na Amazônia Oriental

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