Premature Luteal Regression Induced by Equine Chorionic Gonadotropin and Estrogen is Suppressed by Administration of Exogenous Interferon in Red Deer (Cervus Elaphus)1

The aim was to estimate the effective pharmacological method of the estrous cycle synchronization by checking the effects of synchronization by measurement of progesterone (P4) and 17-beta estradiol (E2) concentration by RIA and artificial insemination. The experiment was performed at the red deer farm in Rudzie (North-East Poland; 3 year’s old). The herd (N = 14) was kept away from bulls and was divided in two groups of seven animals. In the Group I, CIDR insert (0.3 g of P4) was applicated intravaginally for 12 days; a second insert replaced the first one for the next 12 days, and next 200 IU of equine chorionic gonadotropin (eCG) was injected intramuscularly (Folligon). Estrus was expected 48 h after eCG injection. In the Group II, Chronogest sponge (20 mg of flugestone acetate) was applicated intravaginally and after 7 days replaced with second chronogest sponge for 7 days. After removing the sponge, on the same day eCG was injected and estrus was expected after 48 h. Artificial insemination was provided with frozen-thawed semen twice: 12 and 24 h after expected estrus. The peripheral blood from the jugular vein was collected each time when the inserts or sponge were applicated and 40 days after insemination. The concentration of P4 and E2 in plasma was measured by RIA. The effectiveness of insemination was monitored by pregnancy-associated glycoproteins determination and observed by the number of calves born. Two pregnancies were confirmed in Group I and five in Group II based on PAG concentration. One newborn was observed in Group I and five in Group II. Both methods of synchronization are effective in hinds based on the received profile of steroids. Although the sponge shape in case of chronogest is better comparing with CIDR, which was not completely deposited in the vagina of hind, potentially leads to bacteria inflammation, and it disturbs the rightful endocrine regulation. Moreover, pregnancy rate and hormone responsiveness were better in Group II.

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Incidence of Premature Luteal Regression in Ewes Superovulated with a Single Injection of Follicle-Stimulating Hormone Combined with Equine Chorionic Gonadotropin.

Journal of Reproduction and Development ◽

10.1262/jrd.44.407 ◽

1998 ◽

Vol 44 (4) ◽

pp. 407-412 ◽

Cited By ~ 4

Author(s):

Yutaka FUKUI ◽

Midori OKADA ◽

Naohisa ISHIDA

Keyword(s):

Chorionic Gonadotropin ◽

Single Injection ◽

Follicle Stimulating Hormone ◽

Luteal Regression ◽

Equine Chorionic Gonadotropin ◽

Stimulating Hormone

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Vocalizations in red deer (Cervus elaphus), sika deer (Cervus nippon), and red × sika hybrids

Journal of Zoology ◽

10.1017/s0952836998001149 ◽

1998 ◽

Vol 244 (1) ◽

pp. 123-134 ◽

Cited By ~ 1

Author(s):

A. M. Long ◽

N.P. Moore ◽

T. J. Hayden

Keyword(s):

Cervus Elaphus ◽

Red Deer ◽

Sika Deer ◽

Cervus Nippon

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The deer of the island of Lampedusa (Pelagian Archipelago, Italy): literary references and osteological evidence

Archives of Natural History ◽

10.3366/anh.2002.29.1.51 ◽

2002 ◽

Vol 29 (1) ◽

pp. 51-66 ◽

Cited By ~ 7

Author(s):

MARCO MASSETP ◽

BRUNO ZAVA

Keyword(s):

Nineteenth Century ◽

Cervus Elaphus ◽

Red Deer ◽

Scientific Literature ◽

Taxonomic Relationships

During the nineteenth century, scientific literature and official reports recorded the occurrence of a population of red deer, Cervus elaphus, on the island of Lampedusa (Pelagian Archipelago, Italy). Osteological specimens collected by the zoologist Enrico Hillier Giglioli towards the end of the century confirmed these references. Since cervids are not found among the fossil fauna of the island, the red deer must have been introduced by man although we do not yet know precisely when. The former existence of the species on Lampedusa is discussed by comparison of literary material and bone evidence. The population's probable origins and its taxonomic relationships with other Mediterranean red deer populations are also analysed.

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Role of ovarian failure in reproductive senescence in aged red deer (Cervus elaphus) hinds

Reproduction ◽

10.1530/jrf.0.1200211 ◽

2000 ◽

Vol 120 (2) ◽

pp. 211-216 ◽

Cited By ~ 2

Author(s):

M. Fisher ◽

B. McLeod ◽

D. Heath ◽

S Lun ◽

P. Hurst

Keyword(s):

Cervus Elaphus ◽

Red Deer ◽

Ovarian Failure ◽

Reproductive Senescence

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Production of interferon by red deer (Cervus elaphus) conceptuses and the effects of roIFN-tau on the timing of luteolysis and the success of asynchronous embryo transfer

Reproduction ◽

10.1530/reprod/118.2.387 ◽

2000 ◽

pp. 387-395 ◽

Cited By ~ 6

Author(s):

KJ Demmers ◽

HN Jabbour ◽

DW Deakin ◽

AP Flint

Keyword(s):

Embryo Transfer ◽

Early Pregnancy ◽

Cervus Elaphus ◽

Pregnancy Loss ◽

Red Deer ◽

Interferon Tau ◽

Recombinant Interferon ◽

Uterine Flushing ◽

Calving Rate

The role of interferon in early pregnancy in red deer was investigated by (a) measuring production of interferon by the conceptus, (b) testing the anti-luteolytic effect of recombinant interferon-tau in non-pregnant hinds, and (c) treatment of hinds with interferon after asynchronous embryo transfer. Blastocysts were collected from 34 hinds by uterine flushing 14 (n = 2), 16 (n = 2), 18 (n = 8), 20 (n = 13) or 22 (n = 9) days after synchronization of oestrus with progesterone withdrawal. Interferon anti-viral activity was detectable in uterine flushings from day 16 to day 22, and increased with duration of gestation (P < 0.01) and developmental stage (P < 0.01). When interferon-tau was administered daily between day 14 and day 20 to non-pregnant hinds to mimic natural blastocyst production, luteolysis was delayed by a dose of 0.2 mg day(-1) (27.3 +/- 1.3 days after synchronization, n = 4 versus 21 +/- 0 days in control hinds, n = 3; P < 0.05). Interferon-tau was administered to hinds after asynchronous embryo transfer to determine whether it protects the conceptus against early pregnancy loss. Embryos (n = 24) collected on day 6 from naturally mated, superovulated donors (n = 15) were transferred into synchronized recipients on day 10 or day 11. Interferon-tau treatment (0.2 mg daily from day 14 to 20) increased calving rate from 0 to 64% in all recipients (0/11 versus 7/11, P < 0.005), and from 0 to 67% in day 10 recipients (0/8 versus 6/9, P < 0.01). The increased success rate of asynchronous embryo transfer after interferon-tau treatment in cervids may be of benefit where mismatched embryo-maternal signalling leads to failure in the establishment of pregnancy.

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Predisposition assessment of mountainous forests to bark peeling by red deer (Cervus elaphus L.) as a strategy in preventive forest habitat management

Wildlife Biology in Practice ◽

10.2461/wbp.2011.7.7 ◽

2011 ◽

Vol 7 (1) ◽

Cited By ~ 7

Author(s):

Ursula Nopp-Mayr ◽

Friedrich Reimoser ◽

Friedrich Voelk

Keyword(s):

Cervus Elaphus ◽

Habitat Management ◽

Red Deer ◽

Forest Habitat ◽

Bark Peeling

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The population of Red Deer (Cervus elaphus L., 1758) in Tulcea county (Romania)

Travaux du Muséum National d’Histoire Naturelle “Grigore Antipa” ◽

10.2478/v10191-010-0026-3 ◽

2010 ◽

Vol 53 (1) ◽

pp. 351-356

Author(s):

Sorin Geacu

Keyword(s):

Cervus Elaphus ◽

Red Deer ◽

Forest Land ◽

The West ◽

Spreading Area ◽

Deer Population ◽

The North ◽

Natural Expansion ◽

North Western

The population of Red Deer (Cervus elaphus L., 1758) in Tulcea county (Romania) The presence of the Red Deer in the North-western parts of Tulcea County is an example of the natural expansion of a species spreading area. In North Dobrogea, this mammal first occurred only forty years ago. The first specimens were spotted on Cocoşul Hill (on the territory of Niculiţel area) in 1970. Peak numbers (68 individuals) were registered in the spring of 1987. The deer population (67 specimens in 2007) of this county extended along 10 km from West to East and 20 km from North to South over a total of 23,000 ha (55% of which was forest land) in the East of the Măcin Mountains and in the West of the Niculiţel Plateau.

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