Fixed-time artificial insemination in red deer ( Cervus elaphus) in Argentina

Synchronization of estrous and fixed-time artificial insemination (FTAI) was conducted during the reproductive season of 2008 (March–April) in a local red deer breeding farm in Argentina. Multiparous suckling hinds ( n = 38) were artificially inseminated following hormonal treatment (intravaginal sp...

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Bibliographic Details
Published in:Animal reproduction science 2009-10, Vol.115 (1), p.312-316
Main Authors: Aller, J.F., Fernandez, O., Sanchez, E.
Format: Article
Language:English
Subjects:
Animals
Argentina
Artificial insemination
catheters
cervix
Cervus elaphus
Climate
conception
controlled internal drug release devices
cryopreservation
Deer
Deer - physiology
dosage
estrous cycle
Estrous synchronization
Estrus - physiology
estrus synchronization
Estrus Synchronization - methods
Female
females
fixed-time artificial insemination
Frozen semen
hormonal regulation
Insemination, Artificial - methods
Insemination, Artificial - statistics & numerical data
Insemination, Artificial - veterinary
Male
medroxyprogesterone
methodology
Pregnancy
pregnancy rate
Pregnancy, Animal - physiology
rectum
Seasons
semen
spermatozoa
Ultrasonography, Prenatal - methods
Ultrasonography, Prenatal - veterinary
uterus
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Description
Summary:Synchronization of estrous and fixed-time artificial insemination (FTAI) was conducted during the reproductive season of 2008 (March–April) in a local red deer breeding farm in Argentina. Multiparous suckling hinds ( n = 38) were artificially inseminated following hormonal treatment (intravaginal sponge containing 100 mg of medroxiprogesterone acetate). At the time of sponge removal (day 12) 250 IU of eCG and 500 μg of PGF2α were given to each hind. The FTAI was performed at 48–55 h after device removal with cryopreserved semen imported from New Zealand. Rectal-transcervical AI method (similar to that in cattle) was performed and semen was deposited within the uterine body ( n = 28) or the cervix ( n = 10). Pregnancy was diagnosed by means of ultrasonography 44 days after FTAI. The overall pregnancy rate was 36.8% (14/38). Percentage of does that became pregnant with intrauterine seminal deposition was 42.9% (12/28) whereas pregnancy rate in the hinds with intracervical AI was 20% (2/10; P = 0.27).
ISSN:0378-4320
1873-2232
DOI:10.1016/j.anireprosci.2008.11.018