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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 aim of this study was to evaluate the reproductive impact of a short-term protein supplementation on a long interval prostaglandin-based protocol (two PG injections 15 d apart; PG15) for timed artificial insemination in sheep. During the breeding season, 437 multiparous Merino ewes grazing...

Author(s)
Errandonea, N.; Fierro, S.; Viñoles, C.; Gil, J.; Banchero, G.; Olivera-Muzante, J.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2018, 114, pp 34-39
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 compare the reproductive performance after TAI in ewes synchronized with mid (12 or 13) or long (14-16 d) interval prostaglandin (PG) or progesterone plus eCG (P4-eCG) based protocols, 440 multiparous Corriedale ewes were synchronized with two PG injections administered 12-16 d apart (PG12,...

Author(s)
Fierro, S.; Olivera-Muzante, J.
Publisher
Elsevier B. V., Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2017, 180, pp 78-84
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

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

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
AbstractFull Text

In general, artificial insemination (AI) in sheep using frozen-thawed (FT) semen in commercial scale is limited due to the fact that the FT semen of sheep needs to be deposited into the uterus to achieve an acceptable fertility rate. Laparoscopic insemination with FT semen gives commercially...

Author(s)
Leethongdee, S.
Publisher
Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
Citation
Thai Journal of Veterinary Medicine, 2011, 41, 4, pp 403-407
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

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