Výsledky vyhledávání - "A.-R. Lehrer"

The Effect of Enhanced Milk Yield of Dairy Cows by Frequent Milking or Suckling on Intake and Digestibility of the Diet

Autor: R. Lehrer, Hillary Voet, C.H. Knight, B. Robinzon, Y. Aharoni, H. Tagari, I. Bruckental, H. Gacitua, Ephraim Maltz, J. Kali, Y. Folman, U. Bar-Peled

Publikováno v: Journal of Dairy Science. 81:1420-1427

Groups of 9 or 10 cows were assigned to one of three treatments 1) machine-milking three times daily, 2) machine-milking six times daily, and 3) suckling three times daily in addition to machine-milking three times daily. Treatments were conducted du

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b76278f017f36c2f8f951e6e6d19b94
https://doi.org/10.3168/jds.s0022-0302(98)75706-6

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Increased Weight Gain and Effects on Production Parameters of Holstein Heifer Calves That Were Allowed to Suckle from Birth to Six Weeks of Age

Autor: Ephraim Maltz, I. Bruckental, A.-R. Lehrer, B. Robinzon, H. Gacitua, Y. Folman, U. Bar-Peled, H. Tagari, Hillary Voet

Publikováno v: Journal of Dairy Science. 80:2523-2528

Forty Holstein heifer calves were assigned to two treatments. Control calves (n = 20) were fed milk replacer in open buckets, and calves that were allowed to suckle (n = 20) were paired and suckled the same dam three times daily. Treatments were cond

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::085e03bd731fc2e33247adb19ae23fef
https://doi.org/10.3168/jds.s0022-0302(97)76205-2

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Effects of frequent machine milking and suckling in early lactation on blood plasma ion homoeostasis in high-yielding dairy cows

Autor: I. Bruckental, A.-R. Lehrer, Y. Folman, B. Robinzon, Hillary Voet, Nissim Silanikove, U. Bar-Peled, Ephraim Maltz, H. Gacitua, H. Tagari

Publikováno v: The Journal of Agricultural Science. 129:237-242

Groups of nine or ten cows were assigned, after calving, to treatments in which they were (i) machine milked three times daily (M3), (ii) machine milked six times daily (M6) or (iii) suckled three times daily in addition to being machine milked three

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c3592cfbab86cb49e2460cba44684d33
https://doi.org/10.1017/s0021859697004681

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Uniform monthly milk production in Israel by planned breeding of replacement heifers: results of a simulation study

Autor: A. R. Lehrer, H. E. Kahn

Publikováno v: Animal Science. 54:1-6

Both milk production (MP) and conception rate (CR) of primi- and multiparous cows (P+M) in Israel are characterized by the same summer-autumn trough and winter-spring peak. Although there is no causal link between CR and MP (a simulation-model study

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9737106a681f4f46542bcb2a5c28c26e
https://doi.org/10.1017/s0003356100020493

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Intravaginal impedance and sexual behavior of ovariectomized goats given estrogen alone or in combination with progesterone

Autor: D B, Imwalle, A R, Lehrer, L S, Katz

Publikováno v: Journal of animal science. 85(8)

Intravaginal impedance (IVI) fluctuates during the goat estrous cycle. To understand which ovarian steroids are responsible for IVI changes and whether IVI variations are associated with precopulatory and copulatory behaviors, 8 ovariectomized female

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::03e11da743fc7a1844b6061fa2128e13
https://pubmed.ncbi.nlm.nih.gov/17504954

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Editorial

Autor: Henry R Lehrer

Publikováno v: Journal of Aviation/Aerospace Education & Research. 6

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5b8b7d65238e00d98036c00e5d25a939
https://doi.org/10.58940/2329-258x.1179

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Aviation Distance Learning: An Initial Case Study of Intent, Implementation, and Evaluation

Autor: Henry R. Lehrer, Thomas J. Connolly

Publikováno v: Collegiate Aviation Review International. 12

The concept of distance learning is not a new concept in education but is somewhat innovative in collegiate aviation programs. The fOllowing study involved an evaluation of the examination performance of 70 students in three different aviation classe

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::59c1bc2bc1eb66880ca04e9858666e21
https://doi.org/10.22488/okstate.18.100256

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