Zobrazeno 1 - 10
of 377
pro vyhledávání: '"R.W. Lenz"'
Publikováno v:
Dairy Science Handbook ISBN: 9780429049361
The quality of animals has improved due to better management and genetic selection. The use of artificial insemination has contributed significantly to the genetic improvement of farm animals. Nuclear transfer probably holds more promise for obtainin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c569eb4fc4e99d6c8924ff6075f16da5
https://doi.org/10.1201/9780429049361-21
https://doi.org/10.1201/9780429049361-21
Publikováno v:
Journal of Dairy Science. 91:1778-1785
Ejaculates were collected by artificial vagina from 3 Holstein sires and sorted to 90% purity for X-chromosome-bearing spermatozoa (range 88 to 93%) using flow cytometry. Sorted sperm were diluted to 2.1, 3.5, or 5.0 x 10(6) sperm per dose in an egg
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4978e226a848f91177749b0b862e35a0
https://doi.org/10.3168/jds.2007-0964
https://doi.org/10.3168/jds.2007-0964
Publikováno v:
Journal of Dairy Science. 87:E93-E104
Although changes in environment and management are primarily implicated for the decline in reproductive efficiency of Holstein cows during the past 25 yr, fertility of the male must not be overlooked. Recent measures of scrotal circumference, semen q
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e885e863ef85ee733695e96a8ad4fe0
https://doi.org/10.3168/jds.s0022-0302(04)70065-x
https://doi.org/10.3168/jds.s0022-0302(04)70065-x
Autor:
R.W. Lenz, F. Ciardelli
This book contains the texts of the main lectures presented at the NATO Advanced Studies Institute on'Advances in Preparation and Properties of Stereoregular Polymers'held at Tirrenia near Pisa, Italy, from October 3 to 14, 1978. A few contributed pa
Publikováno v:
Journal of Dairy Science. 73:1779-1783
In the dairy cattle industry, uncertainty still remains regarding the most desirable site of inseminate deposition to maximize AI conception rates. The effect of site of inseminate deposition on nonreturn rates was determined from 2195 cornual and 24
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::97755f25778a175ea459888f1d0ea897
https://doi.org/10.3168/jds.s0022-0302(90)78857-1
https://doi.org/10.3168/jds.s0022-0302(90)78857-1
Pseudomonas oleovorans was grown on organic esters, either the higher alkyl esters of acetic acid or the methyl and ethyl esters of long chain alkanoic acids, to produce PHAs with terminal ester groups on the alkyl side chains. Both types of esters w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ffb270a8b8a647b23fc7366196232e3
https://doi.org/10.1016/b978-0-444-81708-2.50015-4
https://doi.org/10.1016/b978-0-444-81708-2.50015-4
Publikováno v:
Journal of dairy science. 73(11)
Spectrophotometers are used for estimating sperm concentrations from raw ejaculates in semen processing laboratories. Unfortunately, these instruments have a limited detection spectrum and do not permit accurate quantification of sperm numbers in hig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::66677ff82b7278b39585d993f48c7e5a
https://pubmed.ncbi.nlm.nih.gov/2273141
https://pubmed.ncbi.nlm.nih.gov/2273141
Publikováno v:
Molecular and Cellular Endocrinology. 29:51-65
Bovine granulosa cells from small (1–9 mm) or large (10–20 mm) follicles were incubated in a chemically defined medium containing 5 μCi/ml [3H]glucosamine, gonadotropins or polypeptide hormones, 8-Br-cAMP, theophylline or trifluoperazine (TFP).
Externí odkaz:
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https://doi.org/10.1016/0303-7207(83)90004-7
https://doi.org/10.1016/0303-7207(83)90004-7