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Abstract

The objective of the present study was to evaluate the effects of clinical mastitis at the beginning of lactation on reproductive performance of dairy cows in Algeria. Calving to first insemination and calving to conception intervals, number of insemination per conception and conception rate at the ...

Author(s)
Bouamra, M.; Ghozlane, F.; Ghozlane, M. K.
Publisher
Academic Journals, Lagos, Nigeria
Citation
African Journal of Biotechnology, 2017, 16, 2, pp 91-95
Abstract

This study was conducted to assess the problems associated with the artificial insemination service in Essera woreda of Dawuro zone, southern Ethiopia from December, 2016 to August, 2017. The study was conducted using questionnaire survey and records in targeted human and dairy cow's population,...

Author(s)
Fentaye Kassa; Wubshet Wuletaw
Publisher
Academic Journals, Lagos, Nigeria
Citation
International Journal of Livestock Production, 2018, 9, 2, pp 24-28
Abstract

Artificial insemination is beginning to find its place in Algerian dairy cattle farms. The bovine artificial insemination (AI) assessments for a three-year period in the semi-arid wilaya of Sétif on 4 855 insemination acts carried out by 5 inseminators in 3 664 cows of 5 different breeds belonging...

Author(s)
Mouffok, C.; Allouni, A.; Semara, L.; Belkasmi, F.
Publisher
CIPAV Foundation, Cali, Colombia
Citation
Livestock Research for Rural Development, 2019, 31, 4, pp Article 49
Abstract

Our objective was to compare the insemination dynamics and time to pregnancy for up to 100 d after the beginning of the artificial insemination period (AIP) for heifers managed with first artificial insemination (AI) service programs that relied primarily on insemination at detected estrus (AIE)...

Author(s)
Masello, M.; Perez, M. M.; Granados, G. E.; Stangaferro, M. L.; Ceglowski, B.; Thomas, M. J.; Giordano, J. O.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2019, 102, 2, pp 1671-1681
Abstract

Objective: To determine if insemination site or pre-ovulatory follicle diameter at fixed-time artificial insemination (FTAI) affects the odds of pregnancy when heifers are inseminated with sexed semen. Methods: The study was conducted in 422 Holstein heifers enrolled into 531 inseminations. ...

Author(s)
Ingenhoff, L.; Hall, E.; Ni, S. R.; House, J. K.
Publisher
Wiley, Melbourne, Australia
Citation
Australian Veterinary Journal, 2017, 95, 9, pp 317-324
AbstractFull Text

A cross sectional study was conducted from November 2015 to May 2016 with the objective of assessing the problems associated with artificial insemination service in dairy cattle in five selected peasant associations of Tullo district, west Hararghe, Ethiopia. A structured questionnaire was used for ...

Author(s)
Riyad Juneyid; Anwar Hassen; Jelalu Kemal; Kiros Welay
Publisher
Ethiopian Veterinary Association, Addis Ababa, Ethiopia
Citation
Ethiopian Veterinary Journal, 2017, 21, 2, pp 62-74
AbstractFull Text

The livestock sector seeks to improve the productivity of meat, milk and rusticity, through crosses, which has led to the deterioration of racial lines, affecting the decrease in quality and quantity of production, and influencing directly the Profitability. Currently, biotechnological advances...

Author(s)
Marizancén Silva, M. A.; Artunduaga Pimentel, L.
Publisher
Universidad Nacional Abierta y a Distancia (UNAD), Bogota, Colombia
Citation
Revista de Investigación Agraria y Ambiental, 2017, 8, 2, pp 247-259
Abstract

The aim of this study was to test the efficiency of progesterone supplementation post insemination (p.i.) in the fertility of dairy cows under commercial farm conditions. At initiation of the study, 405 cows from three farms-irrespective of their open days- were bred after natural or synchronized...

Author(s)
Brozos, C. N.; Tsousis, G.; Kiossis, E.; Tsakmakidis, I.; Karagiannis, I.; Boscos, C.
Publisher
Hellenic Veterinary Medical Society, Athens, Greece
Citation
Journal of the Hellenic Veterinary Medical Society, 2018, 69, 4, pp 1235-1240
Abstract

The principle of ovsynch-timed artificial insemination and the methods and reproductive application of estrus synchronization and ovsynch-timed artificial insemination in dairy cattle were summarized. Accurate and timely estrus detection of dairy cattle in their estrus cycle was the foundation for ...

Author(s)
Zhao MingLi; Zhang Shen; Hao HaiSheng; Zhao XueMing; Du WeiHua; Wang Dong; Zhu HuaBin
Publisher
Guoji Shudian (Institute of Scientific and Technological Information of China, China Publications Centre), Beijing, China
Citation
Chinese Journal of Animal Science, 2015, 51, 17, pp 80-86
Abstract

The embryo production results after use of sex-sorted sperm to inseminate superovulated cows (SOV) have not been very encouraging so far, due to the low quantity of sperms used as well as their short half-life. In a previous study conducted in Brazil in Holstein cows, it was shown that using the...

Author(s)
Argudo, D. E.; Soria, C. A.; Durán, J. C.; Bravo, S. E.; Alvarado, J. P.; Alberio, R. H.
Publisher
Veterinaria Organizacion S.L., Malaga, Spain
Citation
REDVET, 2018, 19, 4, pp 041811

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