Plasma steroid hormone concentrations and blood flow of the ovarian structures of the female dromedary (Camelus dromedarius) during growth, dominance, spontaneous ovulation, luteinization and regression of the follicular wave

Rawy, Mohammed; Derar, R.; El-Sherry, Taymour M.; Megahed, Gaber

doi:10.1016/j.anireprosci.2014.05.004

Cited by 9 publications

(3 citation statements)

References 25 publications

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“…Our ovarian data in the present study showed that total number follicles (TNF) and diameter follicles in both ovaries left and right (DLF, DRF) increased significantly during estrus cycle (Table 2). Similar results have been previously obtained in shecamels (Rawy et al 2014) where maximum of dominant follicular diameter in the ovulatory phase was found to be (1.82±0.2cm) with reach to higher production, of estrogen. These results are supported by the data of estrogen (Fig.…”

Section: Changes In Ovarian Follicular Activitiessupporting

confidence: 90%

Blood Constituents, Antioxidant Activities and Hormonal Profile in She-camels (Camelus dormedarius) during different Physiological Statuses in the North Western Coast of Egypt

2021

Int J Vet Sci

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To monitor blood constituents and hormonal profiles in dromedary she-camels at different physiological statuses in the Northwestern Coast of Egypt, twenty-four she-camels, aged 7-10 years were used from December 2016 to March 2019. Animals were divided according estrous behavior and ultrasound scans of ovarian structures into estrus and non-estrus groups before natural mating. Pregnancy was diagnosed 30 days after mating by ultrasonography. Blood samples were collected from all animals during estrus and non-estrus and monthly during gestation and lactation periods. During the follicular phase GLC and P4 levels decreased (P<0.05). Levels of E2 and PRL increased (P<0.05). Follicles number and diameter in both ovaries increased (P<0.05) in estrus group. Cyclic status correlated negatively with GLC, P4, total number follicles of left ovary (TLO) and diameter follicles of left ovary (DLO) and positively with AST, E2 and DLO. In 1st trimester of pregnancy, GLC levels decreased. Higher (P<0.05) activity of ALT (2nd and 3rd trimesters) and ALP (1st and 2nd trimesters) were recorded. SOD and HP changed (P<0.05). Pregnancy status correlated negatively with GLC, ALP, HP and SOD and positively with TG and ALT. During lactation, ALB, CHOL, TG, ALT, ALP, P4 and PRL were affected (P<0.05). SOD and HP were higher (P<0.05) in 2nd and 1st trimester, respectively. Lactation status correlated negatively with P4 and PRL and positively with CHOL, ALB, ALP, ALT and TAC. In conclusion, the knowledge the values of hormonal, blood biochemical, antioxidant activities are necessary for diagnostic interpretation of pathological and adjusting the different functions throughout different physiological statuses under arid conditions.

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Section: Changes In Ovarian Follicular Activitiessupporting

confidence: 90%

Blood Constituents, Antioxidant Activities and Hormonal Profile in She-camels (Camelus dormedarius) during different Physiological Statuses in the North Western Coast of Egypt

2021

Int J Vet Sci

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“…The difference in CLBF between pregnant and non-pregnant llamas was only evident after day 12 (48). Similar CLBF profiles between nonpregnant females were also observed using Doppler ultrasound in llamas (50,51), alpacas (52), and dromedaries (53,54), after inducing ovulation. In these cases, CLBF reached maximum values between 7 and 9 days after induction of ovulation and after that, they began to descend and reached basal levels between days 12 and 14.…”

Section: Figure 4 |supporting

confidence: 73%

Uterine and Corpus Luteum Blood Flow Evaluation Prior to Uterine Flushing in Llama Embryo Donors

et al. 2020

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The aim of this study was to assess the uterine blood flow (UBF) and corpus luteum blood flow (CLBF) in llamas 8 days post-mating, using color-Doppler ultrasonography (CDU), to determine the possible relationship between vascularization and the presence of an embryo. Adult females ( n = 25) were used to monitor ovarian dynamics by palpation and transrectal ultrasonography until detection of a ≥6 mm growing follicle. Females were randomly assigned to one of two groups: Group I ( n = 19), were mated and ovulation was induced by a single dose of buserelin (GnRH analog) that same day (Day 0); and Group II ( n = 6), only ovulation was induced (control). On Day 8, UBF and CLBF were evaluated transrectally in both groups. The color-flow images obtained were analyzed with Image J1.52a software to determine the vascularization area and the percentage of corpus luteum with blood flow emission (CLBF%) together with the percentage for each uterine horn (UBF%). Statistical analysis was performed using an ANOVA test. In Group I, uterine flushing was performed to obtain the embryos, thus dividing the females into Group I+ ( n = 10), when an embryo was recovered and Group I- ( n = 9), when no embryo was recovered. Embryo recovery rate was 52.63% (10/19). In Group I+, UBF% was significantly higher compared to Group I- and Group II ( P <0.05). UBF appears to be a good predictor for embryo presence, with an area under the curve (AUC) of 0.9 and an optimal cut-off value of 9.37% (with a sensitivity of 90% and specificity of 88.9%). The CLBF% did not differ between groups ( P > 0.05). In conclusion, it is possible to detect a local increase of UBF in the presence of an embryo on day 8 post-mating in llamas. This could be useful to achieve an early pregnancy diagnosis or to decide whether to carry out the uterine flushing in a llama embryo transfer program.

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“…Transrectal ultrasonography has been used to study the ovarian status in she camels such as; spontaneous ovulation (Nagy et al, 2005), follicular wave, optimum time for mating, ovarian vasculature (Rawy et al, 2014), superovulatory response (Vyas et al, 2004a andNowshari andAli 2005), follicular dynamics (Manjunatha et al, 2012a&b); follicular wave synchronisation for a timed breeding in both dromedary (Skidmore et al, 2009;Juhasz, 2012 andManjunatha et al, 2015) and bactrian camels (Nikjou et al, 2008), follicular deviation (Manjunatha et al,2014) and pre-ovulatory follicle during nonbreeding season (Vyas et al, 2004b).…”

Section: The Reproductive Organsmentioning

confidence: 99%

A systemic review on ultrasonographic applications in camels

Abu‐Seida¹

2016

Jour. Camel Pract. and Rese.

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Ultrasound is widely accepted as a safe noninvasive diagnostic imaging technique in animals and human. This review aims to shed light on the current applications and future prospect of ultrasonography in camels. To date, ultrasonography has been used efficiently to study the ovarian status in she camels such as; follicular wave, spontaneous ovulation, optimum time for mating, ovarian vasculature, superovulatory response, ovarian follicular dynamics, ovarian follicular wave synchronisation and follicular deviation. Moreover, it has been applied for collection of cumulus oocyte complexes, pregnancy diagnosis, foetometry, foetal sexing, embryo transfer programmes, assessment of somatic cell nuclear transfer and evaluation of the quality and developmental ability of dromedary embryos. Uterine involution and various reproductive disorders such as; early embryonic death, endometritis, vaginal adhesions, ovarian cysts and ovarian hydrobursitis have been diagnosed by ultrasound. In male camels, ultrasonography is a useful tool in studying the developmental changes of testes and pelvic genitalia including; bulbourethral gland, prostate, and pelvic urethra and predicting puberty and future fertility. Normal pleura, heart, fore stomach, liver, small and large intestines, kidney, eye, udder and teat, foot, carpal and tarsal joints have been successfully imaged. However, very limited affections of these structures including; infectious pleuropneumonia, peritonitis, trypanosomiasis, John's disease, intestinal obstruction and ruptured urinary bladder have been diagnosed ultrasonographically in camels. Therefore, ultrasonographic application in camels, compared to other farm animals, is still limited. In conclusion, ultrasonography is untapped in camel practice however, it can offer veterinarians the opportunity for more precise diagnosis and treatment of numerous disorders.

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Plasma steroid hormone concentrations and blood flow of the ovarian structures of the female dromedary (Camelus dromedarius) during growth, dominance, spontaneous ovulation, luteinization and regression of the follicular wave

Cited by 9 publications

References 25 publications

Blood Constituents, Antioxidant Activities and Hormonal Profile in She-camels (Camelus dormedarius) during different Physiological Statuses in the North Western Coast of Egypt

Blood Constituents, Antioxidant Activities and Hormonal Profile in She-camels (Camelus dormedarius) during different Physiological Statuses in the North Western Coast of Egypt

Uterine and Corpus Luteum Blood Flow Evaluation Prior to Uterine Flushing in Llama Embryo Donors

A systemic review on ultrasonographic applications in camels

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