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Automated estrous detection using multiple commercial precision dairy monitoring technologies in synchronized dairy cows

Autor: I.C. Tsai, J. D. Clark, B.W. Jones, Jeffrey M. Bewley, D.L. Ray, G. Heersche, A.E. Stone, L.M. Mayo, W.J. Silvia

Publikováno v: Journal of Dairy Science. 102:2645-2656

Estrus in dairy cattle varies in duration and intensity, highlighting the need for accurate and continuous monitoring to determine optimal breeding time. The objective of this study was to evaluate precision dairy monitoring technologies (PDMT) for d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::37dee15e8b2b96da8310f04ad0abbca3
https://doi.org/10.3168/jds.2018-14738

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A comparison of timed artificial insemination and automated activity monitoring with hormone intervention in 3 commercial dairy herds

Autor: Connie L. Wood, W.J. Silvia, K.A. Dolecheck, G. Heersche, Jeffrey M. Bewley, Kristen McQuerry

Publikováno v: Journal of Dairy Science. 99:1506-1514

The objective of this study was to compare the reproductive performance of cows inseminated based on automated activity monitoring with hormone intervention (AAM) to cows from the same herds inseminated using only an intensive timed artificial insemi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd72f6153056ce5a1a6d3a5fe8fd239b
https://doi.org/10.3168/jds.2015-9914

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Behavioral and physiological changes around estrus events identified using multiple automated monitoring technologies

Autor: Yu-Mei Chang, Jeffrey M. Bewley, B. A. Wadsworth, W.J. Silvia, K.A. Dolecheck, A.E. Stone, G. Heersche, D.L. Ray

Publikováno v: JOURNAL OF DAIRY SCIENCE

This study included 2 objectives. The first objective was to describe estrus-related changes in parameters automatically recorded by the CowManager SensOor (Agis Automatisering, Harmelen, the Netherlands), DVM bolus (DVM Systems LLC, Greeley, CO), HR

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bc7f03e3b7dbb15e594877102d17a7bd
https://doi.org/10.3168/jds.2015-9645

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Sperm membrane functional integrity and response of frozen-thawed bovine spermatozoa during the hypoosmotic swelling test incubation at varying temperatures

Autor: Juan R. Correa, Panayiotis M. Zavos, G. Heersche

Publikováno v: Theriogenology. 47:715-721

The objective of this study was to assess the sperm membrane integrity and permeability of frozen-thawed bovine spermatozoa, processed at varying temperatures during and after thawing, by exposing the spermatozoa to standardized hypoosmotic condition

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f9d03f75998ef8be53ba89c75b456ed2
https://doi.org/10.1016/s0093-691x(97)00029-0

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Effect of bovine somatotropin on reproductive function in lactating dairy cows

Autor: T.S. Swenson, R.W. Hemken, G. Heersche, D.F. Waterman, W.J. Silvia, R.G. Eggert

Publikováno v: Theriogenology. 40:1015-1028

Several recent experiments have reported that chronic treatment with bovine somatotropin (bST) increased the number of days open without affecting the services per conception. The physiological basis for these effects was examined. Eleven lactating H

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9568fcb584fa44419bbb75f4e4995f18
https://doi.org/10.1016/0093-691x(93)90370-k

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Effect of Dietary Energy and Previous Bovine Somatotropin on Milk Yield, Mastitis, and Reproduction in Dairy Cows

Autor: R.G. Eggert, G. Heersche, R.W. Hemken, Robert J. Harmon, W.J. Silvia, W.B. Tucker

Publikováno v: Journal of Dairy Science. 74:4265-4272

Thirty multiparous lactating Holstein cows were blocked according to time of calving and assigned to a 2 × 3 factorial arrangement of treatments in a randomized complete block design to evaluate the effects of two dietary energy concentrations eithe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d58b7fbb5d253099d51d3975f501d62f
https://doi.org/10.3168/jds.s0022-0302(91)78621-9

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Synchronization of estrus in beef heifers with a norgestomet implant and prostaglandin F2alpha

Autor: R.M. McKee, G.H. Kiracofe, R.C. DeBenedetti, S. Wen, G. Heersche

Publikováno v: Theriogenology. 11(3)

In a 5-year study (1973-1977), 281 cycling beef heifers were treated with a 7-day norgestomet (SC21009) ear implant and an intramuscular injection of prostaglandin F(2alpha) (PGF(2alpha)) at the time of implant removal or 24 hr before implant removal

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2481e1bf8f47177187d7c4e75605966a
https://pubmed.ncbi.nlm.nih.gov/16725405

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