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Abstract

The objective was to determine the efficiency of insemination with sexed semen at spontaneous estrus and synchronisation of ovulation, and the effects of days in milk, insemination number, parity, and daily milk yield on pregnancy rates in lactating Holstein cows. A total 1,000 first to fourth...

Author(s)
Kurykin, J.; Jalakas, M.; Kaart, T.; Jaakma, Ü.
Publisher
Lietuvos Veterinarijos Akademija, Kaunas, Lithuania
Citation
Veterinarija ir Zootechnika, 2017, No.75, pp 30-35
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 aim of this review is to compare the performance of different reproductive programs using natural service, estrus synchronization treatment before natural service (timed natural breeding (TNB)), artificial insemination (AI) following estrus detection and timed artificial insemination (TAI) in...

Author(s)
Baruselli, P. S.; Ferreira, R. M.; SáFilho, M. F.; Bó, G. A.
Publisher
Cambridge University Press, Cambridge, UK
Citation
Animal, 2018, 12, s1, pp s45-s52
AbstractFull Text

The impact of real-time ultrasound on the study of bovine reproduction has been dramatic and further development of portable ultrasound machines has given clinicians an added tool for diagnostic reproductive management. Ultrasonography with 3.0-7.5 MHz frequency linear probes is commonly used and...

Author(s)
Suthar, V. S.; Momin, T.; Mahesh, P.; Kelawala, D. N.; Patil, D. B.
Publisher
Intas Pharmaceuticals Ltd, Ahmedabad, India
Citation
Intas Polivet, 2018, 19, 1, pp 22-28
AbstractFull Text

This study proved that previously manipulated hormonal mares with different schemes for synchronization of oestrus cycle - using prostaglandins and combined use of progestins and prostaglandins, fecundity remains at insemination with cryopreserved semen. Furthermore it was found preserving...

Author(s)
Shekerov, Z.; Taushanova, P.; Chervenkov, M.; Stefanov, R.; Yordanov, G.; Georgiev, B.
Publisher
Research Institute of Mountain Stockbreeding and Agriculture, Troyan, Bulgaria
Citation
Journal of Mountain Agriculture on the Balkans, 2016, 19, 4, pp 36-45
Abstract

Two experiments were conducted to assess a hormonal strategy developed to reduce animal handling for timed artificial insemination (TAI) with sex-sorted semen. Four-hundred ninety-one (491) suckled beef cows received a progesterone (P4) intravaginal device and 2 mg intramuscular (im) injection of...

Author(s)
Silva, M. A. V.; Santos, C. S.; França, I. G.; Pereira, H. G.; SáFilho, M. F.; Freitas, B. G.; Guerreiro, B. M.; Faquim, A.; Baruselli, P. S.; Torres-Júnior, J. R. S.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2018, 114, pp 159-164
Abstract

This is a review of the physiology and endocrinology of the estrous cycle and how ovarian physiology can be manipulated and controlled for timed artificial insemination (TAI) in beef and dairy cattle. Estrus detection is required for artificial insemination (AI), but it is done poorly in dairy...

Author(s)
Colazo, M. G.; Mapletoft, R. J.
Publisher
Canadian Veterinary Medical Association, Ottawa, Canada
Citation
Canadian Veterinary Journal, 2014, 55, 8, pp 772-780
Abstract

The main aim of this review was to describe the feasibility of prostaglandin F2α (PGF2α) based protocols used as a tool for ovulation synchronization in cycling goats. There is a reproductive seasonality in small ruminants. However, from latitudes 45° towards equator, the intensity of anoestrus...

Author(s)
Simões, J.
Publisher
Journal of Coastal Life Medicine, Haikou, China
Citation
Journal of Coastal Life Medicine, 2016, 4, 3, pp 240-243
Abstract

Objective: The aim of this study was to monitor the ovarian response and conception rate following estrous synchronization using CIDR, Ovsynch and double prostaglandin F protocols in Egyptian buffalo heifers. Material and methods: A total of 80 cyclic buffalo heifers were divided into four equal...

Author(s)
Hussein, H. A.; Mohamed, R. H.; Hossam, M.; Wehrend, A.
Publisher
Schattauer GmbH, Stuttgart, Germany
Citation
Tierärztliche Praxis. Ausgabe G, Grosstiere/Nutztiere, 2016, 44, 5, pp 287-294
Abstract

The aim of this study was to compare estradiol benzoate (EB) and GnRH for the induction of ovulation in a TAI protocol in buffalo during the nonbreeding season. In experiment 1, 141 buffaloes (56 cows and 85 heifers) received an intravaginal P4 device (1.0 g) plus EB (2.0-mg, intramuscular [im]) at ...

Author(s)
Carvalho, N. A. T.; Soares, J. G.; Souza, D. C.; Maio, J. R. G.; Sales, J. N. S.; Martins Júnior, B.; Macari, R. C.; D'Occhio, M. J.; Baruselli, P. S.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2017, 87, pp 333-338

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