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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

Using a 5-d controlled internal drug-release (CIDR)-Cosynch resynchronization protocol, the objective of this study was to determine the effect of the initial GnRH injection on pregnancy per artificial insemination (P/AI) to the second artificial insemination in lactating Holstein dairy cows. On...

Author(s)
Spencer, J. A.; Carnahan, K.; Shafii, B.; Price, W. J.; Dalton, J.; Ahmadzadeh, A.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2018, 101, 9, pp 8524-8531
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
Abstract

The objective of this study was to determine if there are differences in luteal size (LS), progesterone (P4), and luteal blood flow (LBF) between pregnant and non-pregnant Bos indicus dairy cows during the first three weeks after insemination, and whether these parameters are related to each other. ...

Author(s)
Hassan, M.; Arshad, U.; Bilal, M.; Sattar, A.; Avais, M.; Bollwein, H.; Ahmad, N.
Publisher
Society for Reproduction and Development, Tokyo, Japan
Citation
Journal of Reproduction and Development, 2019, 65, 1, pp 29-36
Abstract

The aim of this study was to quantify the effects of progesterone profile features and other cow-level factors on insemination success to provide a real-time predictor equation of probability of insemination success. Progesterone profiles from 26 dairy herds were analyzed and the effects of profile ...

Author(s)
Blavy, P.; Friggens, N. C.; Nielsen, K. R.; Christensen, J. M.; Derks, M.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2018, 101, 2, pp 1648-1660
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 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
AbstractFull Text

Failure to become pregnant is the primary reason for a dairy cow to be culled from the production herd. A cow that is cycling normally, with no reproductive abnormalities, but has failed to conceive after at least three successive inseminations may cause economic losses in dairy farms. The present...

Author(s)
Arslan, K.; Akyüz, B.; Akçay, A.; Ilgar, E. G.; Macun, H. C.; Çınar, M. U.
Publisher
Veterinarska Fakulteta, Univerza v Ljubljani, Ljubljana, Slovenia
Citation
Slovenian Veterinary Research, 2017, 54, 2, pp 91-98
Abstract

A prognosis of the likelihood of insemination success is valuable information for the decision to start inseminating a cow. This decision is important for the reproduction management of dairy farms. The aim of this study was to develop a prognostic model for the likelihood of successful first ...

Author(s)
Rutten, C. J.; Steeneveld, W.; Vernooij, J. C. M.; Huijps, K.; Nielen, M.; Hogeveen, H.
Publisher
Elsevier Inc., Philadelphia, USA
Citation
Journal of Dairy Science, 2016, 99, 8, pp 6764-6779

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