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Abstract

Causes of low fertility rates of cows (76.2-78.1%) related to viral and bacterial infections, as well as to using of feeds containing mycotoxins, heavy metals and other harmful substances are discussed. It is stated that fertility decreases with the drop in the activity of the endocrine system...

Author(s)
Redkozubova, L.
Publisher
Redaktsiya zhurnala "Zhivotnovodstvo Rossii", Moscow, Russia
Citation
Zhivotnovodstvo Rossii, 2018, No.3, pp 53-54
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

On commercial farms, rabbit does are subjected to a reproductive rhythm that does not account for their welfare or physiology, leading to reduced longevity and consequently high annual replacement. The European Food Safety Authority (EFSA) recommends limited and infrequent use of hormone...

Author(s)
Munari, C.; Ponzio, P.; Alkhawagah, A. R.; Schiavone, A.; Mugnai, C.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2019, 125, pp 122-128
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

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

This study evaluated the effect of breed and follicular status of Boer and indigenous goats on response to superovulation and embryo yield. The oestrous cycles were synchronized with progestagen for nine days and superovulated with porcine follicle-stimulating hormone. Does were cervically...

Author(s)
Mpebe, N. A.; Gonzalez-Bulnes, A.; Lehloenya, K. C.
Publisher
Taylor & Francis, Abingdon, UK
Citation
Journal of Applied Animal Research, 2018, 46, 1, pp 141-145
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
AbstractFull Text

The present work aimed to describe some important concepts regarding the reproductive physiology of pharmacological control of the estrous cycle, presenting different protocols for IATF. IATF has become one of the leading reproductive biotechnologies of economic importance in cattle production...

Author(s)
Oliveira, R. B. de; Silva Junior, B. A. da; Cavalcanti, T. H. C.
Publisher
Pubvet, Maringá, Brazil
Citation
PUBVET, 2018, 12, 11, pp a210
Abstract

Feline artificial insemination is a complex technique, which includes several key stages. It is necessary to manage the oestrus cycles, to induce ovulation and to collect semen, prior to insemination. Specific knowledge of the genital anatomy and reproductive physiology of the cat are essential to...

Author(s)
Mir, F.
Publisher
Point Vétérinaire Italie s.r.l., Milano, Italy
Citation
Summa, Animali da Compagnia, 2015, 32, 8, pp 35-41
Abstract

Feline artificial insemination is a complex technique, which includes several key stages. It is necessary to manage the oestrus cycles, to induce ovulation and to collect semen, prior to insemination. Specific knowledge of the genital anatomy and reproductive physiology of the cat are essential to...

Author(s)
Mir, F.
Publisher
Wolters Kluwer France, Rueil-Malmaison, France
Citation
Point Vétérinaire, 2014, 45, 343(Part 1), pp 46-51

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