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Abstract

Current artificial insemination (AI) laboratory practices assess semen quality of each boar ejaculate to decide which ones to process into AI doses. This decision is aided with two, world-wide used, motility parameters that come available through computer assisted semen analysis (CASA). This...

Author(s)
Kamphuis, C.; Duenk, P.; Veerkamp, R. F.; Visser, B.; Singh, G.; Nigsch, A.; Mol, R. M. de; Broekhuijse, M. L. W. J.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2020, 144, pp 112-121
Abstract

The main objective of this study was to examine the combined effect of mastitis and parity on pregnancy loss (PL) in lactating Holstein cows. A secondary objective was to estimate the cost of mastitis including that of PL attributable to mastitis. A total of 1,774 lactation periods from 1,047...

Author(s)
Dahl, M. O.; Vries, A. de; Galvão, K. N.; Maunsell, F. P.; Risco, C. A.; Hernandez, J. A.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2020, 143, pp 57-63
Abstract

Nellore is the main cattle breed used in Brazil, being the largest commercial herd in the world. Beyond the importance of male reproductive efficiency for farm profit, the use of reproductive techniques, mainly artificial insemination, turns the evaluation of male reproductive traits even more...

Author(s)
Carvalho Filho, I.; Marques, D. B. D.; Campos, C. F. de; Guimarães, J. D.; Guimarães, S. E. F.; Lopes, P. S.; Fonseca e Silva, F.; Veroneze, R.
Publisher
Wiley, Berlin, Germany
Citation
Reproduction in Domestic Animals, 2020, 55, 1, pp 38-43
Abstract

The objective of this study was to determine the effects of prepartum negative dietary cation-anion difference diet (DCAD) fed at two dietary Ca inclusion rates on postpartum uterine health and ovulation dynamics of multiparous Holstein cows (n=76). Treatments began at 28 days before expected...

Author(s)
Ryan, K. T.; Guadagnin, A. R.; Glosson, K. M.; Bascom, S. S.; Rowson, A. D.; Steelman, A. J.; Cardoso, F. C.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2020, 142, pp 338-347
Abstract

The objective of this study was to determine the association of beta-carotene concentration in plasma at the moment of artificial insemination (AI) on pregnancy/AI in lactating Holstein cows. A total of 399 events from 364 lactating Holstein cows were enrolled in the trial (143 primiparous and 221...

Author(s)
Madureira, A. M. L.; Pohler, K. G.; Guida, T. G.; Wagner, S. E.; Cerri, R. L. A.; Vasconcelos, J. L. M.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2020, 142, pp 216-221
Abstract

The objectives of the present study were to analyze systematic effects on semen quality traits from fresh and frozen-thawed semen collected in and outside season. A total of 4,681 reports on semen traits of 121 stallions representing Arabian, Thoroughbred, Quarter Horse and four warmblood breeds...

Author(s)
Greiser, T.; Sieme, H.; Martinsson, G.; Distl, O.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2020, 142, pp 8-14
Abstract

Karan Fries is an Indian composite breed of cattle with superior milk production with a greater disease resistance than many other cattle. Understanding of the basic sperm and semen characteristics is necessary to develop the artificial insemination and sperm sexing methods. This study was...

Author(s)
Yata, V. K.; Gangwar, D. K.; Vishal Sharma; Dubey, S. K.; Yadav, S. K.; Suman Choudhary; Sudarshan Kumar; Mohanty, T. K.; Mohanty, A. K.
Publisher
Elsevier B.V., Amsterdam, Netherlands
Citation
Animal Reproduction Science, 2020, 212, pp 106250
Abstract

The aim of this research was to evaluate the effect of recombinant bovine somatotropin (bST) on pregnancy per artificial insemination (P/AI), cellular composition of the corpus luteum (CL) and endometrial gland morphometry. In Experiment 1, Nelore cows (n=587) received a fixed-time artificial ...

Author(s)
Costa, N. P.; Gonella-Diaza, A.; Pugliesi, G.; Maldonado, M. B. C.; Scollari, S. C.; Mello, B. P.; Feltrin, I.; Girotto, R.; Castilho, C.; Membrive, C. M. B.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2020, 141, pp 180-185
Abstract

We hypothesized that a shortened version of a modified Ovsynch program (OVS: GnRH-1 -7 d-PGF-1 -24 h-PGF-2 -32 h-GnRH-2 -16 h-AI) that excluded GnRH-1 to resynchronize ovulation in cows bearing a corpus luteum (CL) after a non-pregnancy diagnosis (NPD) or including progesterone supplementation...

Author(s)
Sauls-Hiesterman, J. A.; Voelz, B. E.; Stevenson, J. S.
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2020, 141, pp 105-112
Abstract

Artificial insemination (AI) has been used as a routine technology globally in the pig production industry since 1930. One of the preferable advantages of AI technology is that the semen of elite boars can be disseminated to the commercial sow population rapidly. Understanding the genetic...

Author(s)
Zhao YunXiang; Gao Ning; Li XinYun; El-Ashram, S.; Wang ZhiQuan; Zhu Lin; Jiang Wei; Peng Xing; Zhang CongLin; Chen YiLong; Li ZhiLi
Publisher
Elsevier, New York, USA
Citation
Theriogenology, 2020, 141, pp 9-15

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