Circulating levels of estrogen and progesterone in female camel () during pregnancy

Agarwal, Sonal; Khanna, N. D.; Agarwal, Vibhuti; Dwaraknath, P. K.

doi:10.1016/0093-691x(87)90036-7

Cited by 19 publications

(9 citation statements)

References 13 publications

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“…Serum progesterone, estradiol-17β, cortisol, T 3 , and T 4 results during pregnancy are presented in Table1.In this study, serum progesterone concentrations in pregnant camels started to HORMONAL PROFILE, ANTIOXIDANT STATUS AND SOME BIOCHEMICAL… increase after successful mating to reach (5.5 ng/ml) during the first trimester of pregnancy, the concentration during the second trimester was (7.3 ng /ml) significantly (P<0.05)higher than that of the first trimester and then declined significantly to reach (6.15 ng/ml)during the third trimester (Table 1).These results are agree with [26][27][28][29] which showed that the progesterone levels during gestation increased gradually from early to late gestation and the drop in its levels only noted at end of gestation or prior to parturition. In she camels, serum progesterone concentrations are constantly low [30], and its concentration starts to rise after mating.…”

Section: Resultssupporting

confidence: 82%

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Hormonal Profile, Antioxidant Status and Some Biochemical Parameters during Pregnancy and Periparturient Period in Dromedary She Camel

2017

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THIS STUDY aimed to determine the changes in the hormonal and biochemical profile of pregnant dromedary camels to provide a baseline data under Egyptian climatic conditions. Blood samples were collected from15 pregnant she-camels aged 8-11 years old just postconception and thereafter monthly during gestation period and during periparturient period (at days 15, 7,4and 1prepartum,at parturition and at days 1, 4, 7 and 15 postpartum).Progesterone level increased significantly (P<0.05) after conception and during the1 st and the 2 nd trimester of pregnancy then declined significantly (P<0.05) during the 3 rd trimester. Meanwhile its level decreased significantly (P<0.05) during periparturient period. Cortisol level significantly (P<0.05) increased at the 3 rd trimester and continued increasing significantly during prepartum period with a maximum level on the day of parturition after that it was markedly decreased during the few days postpartum to day 15 postpartum. Thyroid hormones levels were significant (P<0.05) decreased in their levels from early to late gestation then increased significantly (P<0.05) from day of parturition to day 15 postpartum. Total protein and albumin were significantly low (P<0.05) in the 2 nd and the 3 rd trimesters than the first one with no significance alterations in globulin levels. Total antioxidant, glutathione and ascorbic acid levels were lower in the 3 rd trimester than others, whereas the levels were relatively low in prepartum than 15 days postpartum. Malondialdehyde concentration was significantly increased (P<0.05) during late pregnancy period as a result of the physiological stress of pregnancy

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Section: Resultssupporting

confidence: 82%

“…These results are agreed with Mohamed and Hassan et al [34,35]. Estrogens are continuously secreted during pregnancy in she-camel [28], and their concentrations rise at mid-gestation, suggesting continued follicular development during pregnancy [36,37]. Fig.…”

Section: Resultssupporting

confidence: 82%

Hormonal Profile, Antioxidant Status and Some Biochemical Parameters during Pregnancy and Periparturient Period in Dromedary She Camel

2017

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“…The incidence of CL in these animals may be referred to the natural mating during transport and marketing or spontaneous ovulation (Nagy et al, 2005) otherwise it may be due to early embryonic death (Tibary and Anouassi 1997). In the present study during the breeding season, the significantly high estrogen level (31.50±1.78 pg/ml) in animals with regressed CL comparing with the basal level recorded for inactive ovaries may reflect the continuation of follicular activity even in the presence of a CL (Elias et al, 1984;Agarwal et al, 1987 andAnouassi ,1996) which may be attributed to species variations. On the contrary, low values of estradiol were recorded in cases of cystic ovaries (21.53± 1.61 and 22.00±5.51 pg / ml for follicular and luteal cysts, respectively).…”

Section: Discussionmentioning

confidence: 44%

Ovarian activity of she-camel (Camelus dromedarius) in relation to season, hormonal pattern, age and body condition scores

Hussein

El-Agawany

Amin

2008

Journal of Veterinary Medical Research

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The present work was done to investigate the interrelationship between the ovarian activity and each of seasonal environment, hormonal pattern, age and body condition scores(BCS) in shecamel. Over a period of one year (November 2005-October 2006, jugular blood samples were collected from 320 she-camel (5-20 years old) in Cairo-slaughter house during their antimortum inspection and body condition was scored. Immediately, after slaughter both ovaries were individually collected and morphometric findings were recorded. The results of hormonal assay including estrogen (E), progesterone (P4), follicle stimulating hormone (FSH) and luteinizing hormone (LH) were recorded. The obtained hormonal levels were studied in relation to the ovarian findings and seasonal variation. Moreover the ovarian activity was studied in relation to age and BCS. According to the ovarian findings and hormonal levels, there is clear breeding season in dromedary camel extended from November to April under Egyptian conditions. Otherwise, the period from May to October (non-breeding season) has a lower ovarian activity and concomitant with lower hormonal levels. She-camel reaches its maturity later and has a higher longevity than cattle. The best reproductive capacity of she-camel are found within 8-15 years of age (BCS,2.92±0.21).

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“…Extensive research has been performed on the Indian dromedaries like genetic characterization, nutrient utilization, hormonal patterns, reproductive features etc. which has led to their better breeding and management (Agarwal, Khanna, Agarwal, & Dwaraknath, 1986;Agarwal, Khanna, Agarwal, & Dwaraknath, 1987;Gautam, Mehta, Gahlot, & Gautam, 2004;Khanna, Tandon, & Rai, 1990;Mehta, 2013;Mehta et al, 2006;Nagpal & Patil, 2013;Nagpal, Rai, & Khanna, 1993). On the contrary, very few studies have been conducted on the Indian Bactrian camel when compared to the dromedaries.…”

Section: Presence Of Camels Their Domestication and Putative Impact mentioning

confidence: 99%

Spectrum of Camel Evolution and its Impact on Ancient Human Migration

Sharma¹,

Sharma²,

Kumar³

et al. 2021

Preprint

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The Evolutionary history and domestication of Camels are largely unexplored because of the lack of well dated early archaeological records. However, limited records suggest that domestication of Camels likely happened in the late second millennium BCE. Over the time, camels have helped human for their basic needs like meat, milk, wool, dung to long routes transportation. This multifaceted animal has helped the mankind to connect through continents and in trade majorly through the Silk route. In India, both dromedary and Bactrian camels are found and their habitat is entirely different from each other, dromedaries inhabit in hot deserts and Bactrians are found mostly in cold places (Nubra Valley, Ladakh). Fewer studies on Indian dromedaries have been conducted but no such studies are done on Bactrian camels. It is needed to study the genetics of Bactrian camels to find out their genetic affinity and evolutionary history with other Bactrians found in different parts of the world. Furthermore, parallel studies on humans and Bactrian camel are required to understand the co-evolution and migration pattern of humans during their dispersal in different time periods.

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Circulating levels of estrogen and progesterone in female camel () during pregnancy

Cited by 19 publications

References 13 publications

Hormonal Profile, Antioxidant Status and Some Biochemical Parameters during Pregnancy and Periparturient Period in Dromedary She Camel

Hormonal Profile, Antioxidant Status and Some Biochemical Parameters during Pregnancy and Periparturient Period in Dromedary She Camel

Ovarian activity of she-camel (Camelus dromedarius) in relation to season, hormonal pattern, age and body condition scores

Spectrum of Camel Evolution and its Impact on Ancient Human Migration

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