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Abstract

The aim of the experiment was to evaluate the reproductive performance of ewes synchronized with two doses of prostaglandin F (PG) at different intervals and inseminated at a fixed time. During the breeding season (April to June), 370 multiparous Corriedale ewes were assigned to five groups...

Author(s)
Fierro, S.; Viñoles, C.; Olivera-Muzante, J.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2017, 90, pp 109-113
Abstract

The objective of this study was to evaluate the pregnancy outcomes obtained with either cervical or intrauterine insemination after Short-term protocols (6 days) for FTAI comparing different progestogens and intravaginal devices in sheep. Two experiments were performed during breeding season on a...

Author(s)
Santos Neto, P. C. dos; García-Pintos, C.; Pinczak, A.; Menchaca, A.
Publisher
Elsevier B. V., Amsterdam, Netherlands
Citation
Livestock Science, 2015, 182, pp 125-128
Abstract

To determine estrous, ovarian and reproductive responses after different prostaglandin (PG)-based protocols, ewes were assigned to groups PG10, PG12, PG14 or PG16 (two PG injections administered 10, 12, 14 or 16 days apart; respectively). Experiment I (n=132) was conducted to evaluate the estrous...

Author(s)
Fierro, S.; Viñoles, C.; Olivera-Muzante, J.
Publisher
Elsevier B. V., Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2016, 167, pp 74-82
Abstract

This study aimed to evaluate (1) the effect of inserting an intravaginal sponge containing medroxyprogesterone during the late luteal phase on the corpus luteum (CL) function and endogenous production of P4; (2) the effectiveness of two different equine chorionic gonadotrophin (eCG) doses on...

Author(s)
Cosentino, I. O.; Balaro, M. F. A.; Arashiro, E. K. N.; Santos, J. D. R.; Carvalho, A. B. da S.; Perez Clariget, R.; Ungerfeld, R.; Brandão, F. Z.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2019, 133, pp 113-118
Abstract

The objective was to determine serum progesterone concentrations, ovarian responses, and pregnancy rate in sheep inseminated following a short-term protocol (6 days of treatment) with a previously used controlled internal drug release-G (CIDR-G) device. In experiment 1, 30 ewes were put on a...

Author(s)
Vilariño, M.; Rubianes, E.; Menchaca, A.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2013, 79, 1, pp 206-210
Abstract

To evaluate the reproductive effects of a short-term dietary protein supplementation (Days-10 to -3) before timed AI (TAI=Day 0), 471 Merino ewes grazing native pastures were estrous-synchronized when there were either long intervals between prostaglandin administrations (two prostaglandin...

Author(s)
Olivera-Muzante, J.; Fierro, S.; Alabart, J. L.; Claramunt, M.; Minteguiaga, M. A.; Aunchayna, G.; Errandonea, N.; Banchero, G.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2019, 206, pp 78-84
Abstract

This review considers the use of prostaglandin F and its synthetic analogues (PG) for controlling the estrous cycle of the ewe. Aspects such as phase of the estrus cycle, PG analogues, PG doses, ovarian follicle development pattern, CL formation, progesterone synthesis, ovulation rate, sperm...

Author(s)
Fierro, S.; Gil, J.; Viñoles, C.; Olivera-Muzante, J.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2013, 79, 3, pp 399-408
Abstract

A novel method for oestrus-ovulation synchronization in sheep followed by fixed time insemination is presented herewith. Mature dry ewes (n=28) of Karagouniko breed being at an unknown stage of the oestrous cycle, were used during the middle of breeding season. The treatment protocol consisted of...

Author(s)
Deligiannis, C.; Valasi, I.; Rekkas, C. A.; Goulas, P.; Theodosiadou, E.; Lainas, T.; Amiridis, G. S.
Publisher
Blackwell Publishing, Berlin, Germany
Citation
Reproduction in Domestic Animals, 2005, 40, 1, pp 6-10
Abstract

Traditional treatments of two prostaglandin F2 alpha (PGF2α) doses at 10-day intervals or more did not result in acceptable pregnancy rates in timed artificial insemination (TAI) programmes in ewes. An explanation might be the undefined time-period of the onset of oestrus and ovulation after the...

Author(s)
Menchaca, A.; Miller, V.; Gil, J.; Pinczak, A.; Laca, M.; Rubianes, E.
Publisher
Blackwell Wissenschafts-Verlag GmbH, Berlin, Germany
Citation
Reproduction in Domestic Animals, 2004, 39, 5, pp 352-355
Abstract

The section of the journal contains poster abstracts from the V International Symposium on Animal Biology of Reproduction, held in Campinas, SP, Brazil, on 8-11 October, 2014. Posters focused on the biology, physiology, health, disorders, and reproductive technology of livestock, man, aquatic...

Publisher
Colégio Brasileiro de Reprodução Animal, Belo Horizonte, Brazil
Citation
Animal Reproduction (Belo Horizonte), 2015, 12, 1, pp 135-281

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