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AbstractFull Text

With the current expansion of sheep farming in Brazil and the need for genetic improvement of livestock, the most beneficial alternative available is artificial insemination (AI), and its adoption was facilitated by concomitant use of synchronization of estrus and ovulation in order to time ...

Author(s)
Soriano, G. A. M.; Ruediger, F. R. de; Castilho, C.
Publisher
Faculdade de Medicina Veterinária e Zootecnia, Universidade Estadual Paulista, Botucatu, Brazil
Citation
Veterinária e Zootecnia, 2017, 24, Suppl. 1, pp 189-199
Abstract

Fixed-time artificial insemination (FTAI) is the most effective method to increase the number of females inseminated in a single day, eliminating the necessity of estrus detection. Usually the treatments for FTAI in sheep are based on the use of progesterone-releasing devices and equine chorionic...

Author(s)
Menchaca, A.; Santos Neto, P. C. dos; Cuadro, F.
Publisher
Colégio Brasileiro de Reprodução Animal, Belo Horizonte, Brazil
Citation
Revista Brasileira de Reprodução Animal, 2017, 41, 1, pp 340-344
Abstract

The study of reproductive physiology in domestic ruminants has progressed from the whole animal to the molecular level in an amazingly short period of time. The volume of information on this subject is enormous; therefore, we have focused on domestic ruminants, with an emphasis on cattle. To date, ...

Author(s)
Smith, M. F.; Geisert, R. D.; Parrish, J. J.
Publisher
Oxford University Press, Cary, USA
Citation
Journal of Animal Science, 2018, 96, 7, pp 2952-2970
Abstract

Although essential for artificial insemination (AI) and MOET (multiple ovulation and embryo transfer), oestrus synchronisation and superovulation are associated with increased female reproductive tract mucus production and altered sperm transport. The effects of such breeding practices on the ovine ...

Author(s)
Maddison, J. W.; Rickard, J. P.; Bernecic, N. C.; Tsikis, G.; Soleilhavoup, C.; Labas, V.; Combes-Soia, L.; Harichaux, G.; Druart, X.; Leahy, T.; Graaf, S. P. de
Publisher
Elsevier Ltd, Oxford, UK
Citation
Journal of Proteomics, 2017, 155, pp 1-10
AbstractFull Text

Reproduction of small ruminants can be controlled by several methods developed in recent decades through diverse synchronization protocols. Some of these methods involve administration of hormones that modify the physiological chain of events involved in the oestrous cycle. In the synchronization...

Author(s)
Lozano-González, J. F.; Uribe-Velásquez, L. F.; Osorio, J. H.
Publisher
Universidad de Caldas, Manizales, Colombia
Citation
Veterinaria y Zootecnia, 2012, 6, 2, pp 134-147
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

Reproduction of small ruminants can be controlled by several methods developed in recent decades. Some of these involve administration of hormones that modify the physiological chain of events involved in the sexual cycle. Methods which utilise progesterone or its analogues are based on their...

Author(s)
Abecia, J. A.; Forcada, F.; González-Bulnes, A.
Publisher
Elsevier Ltd, Oxford, UK
Citation
Animal Reproduction Science, 2012, 130, 3/4, pp 173-179
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
AbstractFull Text

Oestrus synchronization is extensively applied in reproductive management of sheep world-wide. The use of equine chorionic gonadotropin (eCG) in oestrus synchronization protocols in sheep is well established. However, development of anti-eCG antibodies after repeated synchronization results in poor ...

Author(s)
Moreira, N. H.; Brasil, O. O.; Silva, J. P. da; Ramos, A. F.
Publisher
Universidade Federal do Rio Grande do Sul, Faculdade de Veterinária, Porto Alegre, Brazil
Citation
Acta Scientiae Veterinariae, 2014, 42, pp 1221
AbstractFull Text

The reproduction seasonality in sheep and goats is the major limitation in improving productivity. Controlling the seasonality in sheep is one of the most significant features of intensive production systems along with being a valuable aid to sheep management. Various treatments have been proposed...

Author(s)
Uribe-Velásquez, L. F.; Restrepo Cadavid, R.; Osorio, J. H.
Publisher
Universidad de Caldas, Caldas, Colombia
Citation
Veterinaria y Zootecnia, 2009, 3, 2, pp 14-27

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