Ovarian function in the buffalo and implications for embryo development and assisted reproduction

Campanile, Giuseppe; Baruselli, Pietro Sampaio; Neglia, Gianluca; Vecchio, Domenico; Gasparrini, B.; Gimenes, Lindsay Unno; Zicarelli, L.; D’Occhio, Michael J.

doi:10.1016/j.anireprosci.2010.03.012

Cited by 105 publications

(84 citation statements)

References 70 publications

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“…The significance of water buffalo to the dairy industry and rural economy, especially in the tropical and subtropical countries, has been emphasized quite often in the literature (Singh et al 2000;Prakash et al 2005;Campanile et al 2010;Das and Khan 2010;Perera 2011). Buffalo is the mainstay of dairy industry in Asia and contributes more than half of the total milk production in India (Das and Khan 2010;Khan et al 2011a).…”

Section: Introductionmentioning

confidence: 99%

Follicular characteristics and intrafollicular concentrations of nitric oxide and ascorbic acid during ovarian acyclicity in water buffalo (Bubalus bubalis)

Khan

Das

2011

Trop Anim Health Prod

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The objective of this study was to examine the follicular characteristics and intrafollicular concentrations of nitric oxide and ascorbic acid during ovarian acyclicity in buffaloes. Ovaries were collected from 56 acyclic and 95 cyclic buffaloes at slaughter, surface follicle number was counted and follicles were classified into small (5.0-6.9 mm), medium (7.0-9.9 mm), and large (≥ 10.0 mm) size categories based on their diameter. Follicular fluid was aspirated and assayed for nitric oxide, ascorbic acid, estradiol, and progesterone. Acyclic buffaloes had a higher (P<0.05) number of medium-sized follicles and a lower (P<0.001) number of large follicles than the cyclic ones. In acyclic animals, the number of large follicles was lower (P<0.01) than in medium size category which in turn was lower (P<0.001) than the number of small follicles. In contrast, the number of medium and large follicles was not different (P>0.05) in the cyclic control. However, the number of small-sized follicles was higher (P<0.001) compared to the other two categories. The incidence of large-sized follicles was lower (P<0.05) in acyclic buffalo population compared to the cyclic control. Evaluation of estrogenic status demonstrated that all the follicles of acyclic buffaloes are estrogen-inactive (E (2)/P (4) ratio<1). Small- and medium-sized follicles of acyclic buffaloes had higher concentrations of nitric oxide (P<0.05 and P<0.001, respectively) and lower concentrations of ascorbic acid (P<0.05 and P<0.01, respectively) than the corresponding size estrogen-active follicles of their cyclic counterparts. In conclusion, this study indicates that follicular development continues during acyclicity in buffaloes. Although follicles in some acyclic buffaloes attain a size corresponding to morphological dominance, they are unable to achieve functional dominance, perhaps due to an altered balance of intrafollicular nitric oxide and ascorbic acid and, as a result, these follicles instead of progressing to ovulation undergo atresia.

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Section: Introductionmentioning

confidence: 99%

Follicular characteristics and intrafollicular concentrations of nitric oxide and ascorbic acid during ovarian acyclicity in water buffalo (Bubalus bubalis)

Khan

Das

2011

Trop Anim Health Prod

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“…The role of JY-1 in preovulatory events and early embryonic development (Bettegowda et al, 2007) may explain the difference in the luteinization process and pace of embryonic development owing to the different protein configurations between species. For example, embryo development is faster (12 -24 h) in buffaloes because of the early entry of embryos into the uterus (4 -5 days after oestrus) (Campanile et al, 2010). Another difference described by Gimenes et al (2011) is that during folliculogenesis in buffaloes there is no decrease in folliclestimulating hormone levels or increase in luteinizing hormone levels in blood plasma at the time of follicle recruitment.…”

Section: Resultsmentioning

confidence: 99%

First-Time Characterization of <i>JY-1</i>-Like Sequence in Goats

et al. 2015

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The JY-1 protein is oocyte specific, and is associated with folliculogenesis and early embryo development, and thus influences the chance of pregnancy. It was the first protein of maternal origin to be described for a single ovulating species, namely cattle. JY-1-like sequences corresponding to 3' coding and the untranslated region have been reported in other vertebrate species. This is the first description of the partial JY-1 (exon 3 and 3'UTR) in a livestock species other than cattle and buffalo. The sequence was characterized in a panel of nine Indian goat breeds, which differ in reproductive traits (twinning percentage and age of sexual maturity). Forty three variations were recorded in the analysed region of goats JY-1 compared with cattle. Nucleotide variations in the codifying region of goats correspond to seven amino acid changes that could affect the biological function of the protein and possibly reproductive differences between goats (higher proportion of multiparous animals) and cattle (mainly uniparous). A novel single nucleotide polymorphism (C15329T) has been identified in Indian goats, which was genotyped in 272 animals from six breeds. Further studies to investigate other regions of the gene and its expression in goat female reproductive tissues would clarify the role of JY-1 in farm animal species that are not primarily uniparous. ______________________________________________________________________________________

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“…Various externally detectable physical changes around the time of estrus are not consistently exhibited by all animals. Therefore, it is imperative to find out the most reliable signs like physical activity, bellowing, swelling of the vulva reddening of the vestibular mucosa, chin resting over the rump of the herd mate, mucous discharge, reduction of milk yield around estrus and frequent voiding of small quantities of urine [5][6][7] and/or techniques like use of teaser animal, ultrasonography, milk/serum progesterone and estrogen concentration, rectal palpation of ovary, uterus and time-lapse video recording etc., [8][9][10] or combination of both which can be employed to identify animal in heat most accurately and effectively in buffaloes. Information on female sexual behaviour of buffaloes is few and no structured information is available for these traits for Surti buffaloes under this agro-climatic region.…”

Section: Introductionmentioning

confidence: 99%

Facets of Estrus Behavior in Surti Buffaloes

Gamit¹,

Singh²

2015

J Adv Dairy Res

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The Investigation was undertaken on sixteen healthy Surti buffaloes to document and characterize female sexual/ estrus behavior in Surti buffaloes maintained at Livestock Research Station, Navsari Agricultural University, Navsari, Gujarat. Perusal of data revealed that in about 56.25 per cent of animals showed estrus during morning while remaining 42.75 percent in the evening time. Result of this study indicated that restlessness, frequent urination and sniffing of vagina, chin resting, chasing, bellowing, being mounted by others, mounting others and tail raising was the estrus specific signs in Surti buffaloes. The overall estrus duration, onset of estrus to ovulation and estrus duration after end of estrus were 22.19 ± 0.75, 31.50 ± 0.87 and 9.31 ± 0.48 hrs, respectively.

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Ovarian function in the buffalo and implications for embryo development and assisted reproduction

Cited by 105 publications

References 70 publications

Follicular characteristics and intrafollicular concentrations of nitric oxide and ascorbic acid during ovarian acyclicity in water buffalo (Bubalus bubalis)

Follicular characteristics and intrafollicular concentrations of nitric oxide and ascorbic acid during ovarian acyclicity in water buffalo (Bubalus bubalis)

First-Time Characterization of <i>JY-1</i>-Like Sequence in Goats

Facets of Estrus Behavior in Surti Buffaloes

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