Relationship between the onset of oestrus, the preovulatory surge in luteinizing hormone and ovulation following oestrous synchronization and superovulation of farmed red deer (Cervus elaphus)

Asher, G. W.; Fisher, M. W.; Jabbour, Henry N.; Smith, J. F.; Mulley, R. C.; Morrow, C. J.; Veldhuizen, F. A.; Langridge, M.

doi:10.1530/jrf.0.0960261

Cited by 44 publications

(26 citation statements)

References 23 publications

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“…At that time, the treatments proposed for superovulation in cervids used progesterone devices for 11–14 days, associated with eCG or FSH applications or a combination of both toward the end of the treatment [ M. gouazoubira —Duarte and Garcia, ; O. virginianus— Waldhalm et al, ; C. elaphus —Argo et al, ; Asher et al, ; Bainbridge et al, ; Fennessy et al, ; Soler et al, ; D. dama —Asher et al, ; Fenessy et al, ; Morrow et al, ; Elaphurus davidianus —Argo et al, ]. Thus, the status of ovarian follicle development at the time of synchronization treatments was not taken into account in previous studies [McCorkell et al, ].…”

Section: Discussionmentioning

confidence: 99%

“…The procedure involved with holding hinds from food and water for 24 hr and physical restraint, followed by anesthesia, as previously described for M. gouazoubira [Zanetti et al, ]. The laparoscopic procedures used were the same as described for red deer [Asher et al, ] and sheep [Godfrey et al, ]. The incisions were closed with 2–0 nylon suture and the hinds were treated with benzathine penicillin (Pentabiotic; Fort Dodge, Campinas, Brazil, 40,000 IU/Kg i.m.)…”

Section: Methodsmentioning

confidence: 99%

“…Although multiple ovulation has been performed successfully in red [ Cervus elaphus —Argo et al, ; Asher et al, ; Bainbridge et al, ; Fennessy et al, ,; Soler et al, ], fallow [ Dama dama —Asher et al, ; Fenessy et al, ; Morrow et al, ], Père David's [ Elaphurus davidianus —Argo et al, ], and white‐tailed deer [ Odocoileus virginianus —Waldhalm et al, ], the procedure often results in highly variable superovulatory responses and/or poor fertilization/embryo recovery rates [Fennessy et al, ]. The great variation in the superovulatory response is the weakest link in the chain of events required for successful MOET [Blanco et al, ].…”

Section: Introductionmentioning

confidence: 99%

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Comparison of three protocols for superovulation of brown brocket deer (Mazama gouazoubira)

Zanetti

Duarte

2011

Zoo Biology

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This study aims to evaluate the ovulation rate and the presence of functional corpora lutea after treatment by three different protocols designed to cause superovulation in brown brocket deer. Six female received an intravaginal device containing 0.33 g of progesterone (CIDR®) for 8 days, followed by 0.5 mg injection of estradiol benzoate at the time of insertion and 265 µg of cloprostenol at the time of removal. Afterwards, the hinds were divided into three groups (n = 2): Treatment A received injection of 600 IU eCG on Day 4 after CIDR® insertion; Treatment B received injection of 300 IU eCG at the same time; and Treatment C received injection of 250 IU FSH dissolved in PVP, also on Day 4 post-insertion. The treatments were crossed over with 44-48 day intervals after CIDR® removal, such that all the deer were submitted to all three treatments. The mean ovulation rate (Treatment A = 3.40 ± 0.68, Treatment B = 1.40 ± 0.24, Treatment C = 0.80 ± 0.49), total ovarian stimulation (Treatment A = 4.80 ± 1.02, Treatment B = 1.80 ± 0.37, Treatment C = 1.40 ± 0.60), and mean CL diameter (Treatment A = 7.33 ± 0.76 mm, Treatment B = 3.94 ± 0.19 mm, Treatment C = 2.18 ± 0.49 mm) in Treatment A were significantly higher than the mean ovulation rates, total ovarian stimulation, and mean CL diameter in Treatments B and C. The mean fecal progesterone metabolites at the luteal phase in Treatment A (6,277.94±2,232.47 ng/g feces) was significantly different from Treatment C (1,374.82±401.77 ng/g feces). Thus, although fertility was not evaluated directly, Treatment A proved capable of induce superovulation in the species Mazama gouazoubira, presenting the greatest mean ovulation rates, with the formation of functional corpora lutea.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Comparison of three protocols for superovulation of brown brocket deer (Mazama gouazoubira)

Zanetti

Duarte

2011

Zoo Biology

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“…For NT, three to five recipients were in two different locations, Ruakura (N ¼ 16) and Invermay (N ¼ 54). On D7, following the estimated time of estrus [61] …”

Section: Embryo Transfer Pregnancy Monitoring and Controlled Calvingmentioning

confidence: 99%

Red Deer Cloned from Antler Stem Cells and Their Differentiated Progeny1

Berg¹,

Li²,

Asher³

et al. 2007

Biology of Reproduction

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The significance of donor cell differentiation status for successful cloning by somatic cell nuclear transfer (SCNT) is unclear. Here, we cloned a new species, red deer (Cervus elaphus), from multipotent antler stem cells and their differentiated progeny. Cultured donor cell lines from male antlerogenic periosteum (AP) were left undifferentiated or chemically induced to initiate osteogenesis or adipogenesis. Based on their morphology and marker gene expression profile, donor cells were classified as undifferentiated AP cells, presumptive osteoblasts, or adipocytes. Adipocytes upregulated adipogenic markers procollagen type I alpha 2 (COL1A2), peroxisome proliferator-activated receptor gamma 2 (PPARG), and gylceraldehyde-3-phosphate dehydrogenase (GAPDH), and downregulated antlerogenic transcripts POU-domain class 5 transcription factor (POU5F1) and parathyroid hormone (PTH)-like hormone (PTHLH). Despite differences prior to NT, transcript abundance of donor-specific markers COL1A2, PPARG, GAPDH, and POU5F1 did not differ significantly in cloned blastocysts (P = 0.10, 0.50, 0.61, and 0.16, respectively). However, donor cell and blastocyst expression levels were completely different for most genes analyzed, indicating their successful reprogramming. The type of donor cell used for NT (AP, bone, and fat cells), had no effect on in vitro development to blastocysts (93 [38%] of 248 vs. 32 [44%] of 73 vs. 59 [32%] of 183, respectively). Likewise, development to weaning was not significantly different between the three cell types (2 [4%] of 46 vs. 2 [29%] of 7 vs. 4 [13%] of 31, for AP vs. bone vs. fat, respectively). Microsatellite DNA analysis confirmed that the eight cloned red deer calves were genetically identical to the cells used for NT.

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“…In dairy cattle, ovulation occurs approximately 12–16 hours after the end of standing oestrus [18-20], and in captive red deer ( Cervus elaphus ) it is reported to occur up to 40 hours after the end of standing oestrus [21]. When examining reproductive organs during the period from ovulation to detectable pregnancy, it is not possible to macroscopically evaluate if mating has taken place or not.…”

Section: Introductionmentioning

confidence: 99%

Reproductive characteristics in female Swedish moose (Alces alces), with emphasis on puberty, timing of oestrus, and mating

et al. 2014

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BackgroundThe moose (Alces alces) is an intensively managed keystone species in Fennoscandia. Several aspects of reproduction in moose have not been fully elucidated, including puberty, timing of mating and oestrus, and the length of the oestrus period. These aspects are relevant for an adaptive management of moose with respect to harvest, population size, demography and environmental conditions. Therefore, an investigation of female moose reproduction was conducted during the moose-hunting period in southern Sweden from 2008 to 2011.ResultsA total of 250 reproductive organs and information on carcass weight and age was collected from four different hunting areas (provinces of Öland, Småland, Södermanland, and Västergötland) in southern Sweden. The results showed that puberty in female moose varied with carcass weight, age, and time of season. The period for oestrous/mating lasted from about mid September to the beginning of November.ConclusionsThe oestrus period (predominantly for heifers) is longer than previously reported and was not finished when the hunting period started. Sampling the uterine cervix to detect spermatozoa was a useful method to determine if mating had occurred. To avoid hunting of moose during oestrus, we suggest that the hunting period should be postponed by at least 14 days in southern Sweden.

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Relationship between the onset of oestrus, the preovulatory surge in luteinizing hormone and ovulation following oestrous synchronization and superovulation of farmed red deer (Cervus elaphus)

Abstract: Summary. The

Cited by 44 publications

References 23 publications

Comparison of three protocols for superovulation of brown brocket deer (Mazama gouazoubira)

Comparison of three protocols for superovulation of brown brocket deer (Mazama gouazoubira)

Red Deer Cloned from Antler Stem Cells and Their Differentiated Progeny1

Reproductive characteristics in female Swedish moose (Alces alces), with emphasis on puberty, timing of oestrus, and mating

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