Effect of ovarian superstimulation on COC collection and maturation in alpacas

Animal Reproduction Science
M H RattoG P Adams

Abstract

The objective of the present study was to compare the ovarian follicular response, cumulus-oocyte complex (COC) collection rate, and maturational status of COC collected from alpacas subsequent to treatment with two different superstimulatory protocols. Alpacas (n=7 per group) were treated with: (1) 200mg of FSH im divided bid for 3d, plus a single i.v. dose of 1000IU hCG 24h after the last FSH treatment, or (2) 1200IU of eCG as a single i.m. dose, plus a single i.v. dose of 1000IU of hCG on day 3 after eCG treatment (day 0=start of superstimulatory treatment). At 20-24h post-hCG treatment, the ovaries were surgically exposed and COC were collected by needle aspiration of all follicles > or =6mm. The FSH and eCG treatment groups did not differ with respect to the number of follicles > or =6mm at the time of COC collection (20.0+/-7.5 versus 27.0+/-3.3; P=0.5), the number of COC collected (26.2+/-8.4 versus 23.3+/-3.7; P=0.7), or the collection rate per follicle aspirated (89% versus 87%; P=0.7). No differences were detected between FSH- and eCG-treated alpacas in the number of expanded COC collected per alpaca (11.5+/-2.9 versus 8.8+/-2.8; P=0.54), the number of expanded COC in metaphase II (8.5+/-1.9 versus 6.0+/-2.1; P=0.1), ...Continue Reading

References

Nov 1, 1990·Journal of Reproduction and Fertility·G P AdamsO J Ginther
Sep 1, 1989·Biology of Reproduction·G P AdamsO J Ginther
Feb 24, 2001·Theriogenology·G M BrogliattiG P Adams
Mar 24, 2004·Animal Reproduction Science·J L VaughanM J D'Occhio
May 25, 2005·Theriogenology·Marcelo RattoGregg P Adams
Jul 15, 1995·Theriogenology·D A BourkeC L Adam

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Citations

Jul 16, 2013·Animal Reproduction Science·J Manuel PalominoGregg P Adams
Nov 28, 2012·Animal Reproduction Science·V TrasorrasM Miragaya
Nov 14, 2012·Animal Reproduction Science·Marcelo H RattoGregg P Adams
Apr 28, 2009·Reproduction in Domestic Animals = Zuchthygiene·V L TrasorrasA Agüero
Dec 7, 2007·Animal Reproduction Science·Pamela A CondeSergio Pasqualini
Nov 29, 2017·Frontiers in Veterinary Science·Virginia L TrasorrasMarcelo H Miragaya
Feb 16, 2021·Frontiers in Veterinary Science·Crissthel Yverlin Guillén PalominoMaría Ignacia Carretero

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