Zobrazeno 1 - 10
of 95
pro vyhledávání: '"R.T. Duby"'
Publikováno v:
Journal of food protection. 50(2)
Two microbiological procedures were evaluated to detect antibiotic residues in dairy cows at slaughter. Inhibition of Bacillus subtilis growth was used for determining the presence or absence of antibiotic residues. The two tests differed only in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b7dfb75887d0c1dcca7fb3183c184b62
https://pubmed.ncbi.nlm.nih.gov/30965408
https://pubmed.ncbi.nlm.nih.gov/30965408
Publikováno v:
Biology of Reproduction. 64:1761-1768
Our previous studies have shown that oocytes collected from prepubertal calves lack developmental competence. The overall objective of this study was to assess causes by comparing biochemical and physiologic changes during in vitro maturation of oocy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::45fc2c36ccaea8ac17298aa8402912d6
https://doi.org/10.1095/biolreprod64.6.1761
https://doi.org/10.1095/biolreprod64.6.1761
Autor:
R.T. Duby, Christine Wrenzycki, E.W. Overstrom, Doris Herrmann, Andrew J. Watson, Heiner Niemann, Maurice P. Boland, D. O'Callaghan, P.A. De Sousa
Publikováno v:
Obstetrics & Gynaecology Publications
This study investigated the effects of quantity and type of diet fed to superovulated donor heifers on molecular and metabolic indices of embryonic development. These effects included the relative abundances of mRNAs for the alpha 1 subunit of Na/K-A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9b81f5a9fbf23b7edcabd4f303c50e0b
https://doi.org/10.1530/jrf.0.1180069
https://doi.org/10.1530/jrf.0.1180069
Publikováno v:
Theriogenology. 50:1263-1274
Acute decreases in nutrient intake can improve embryo quality in sheep, although reductions in ovulation rate can also occur. In cattle, short-term nutrient restriction prior to ovulation has been shown to increase subsequent pregnancy rates. Thus, t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2e832bc05cbec5235d5707ba88240e0
https://doi.org/10.1016/s0093-691x(98)00225-8
https://doi.org/10.1016/s0093-691x(98)00225-8
Autor:
James M. Robl, Charles R. Long, R.T. Duby, Rafael A. Fissore, J.J. Balise, Jose B. Cibelli, P. Damiani
Publikováno v:
Molecular Reproduction and Development. 45:521-534
In this study we evaluated nuclear and ooplasmic maturation of prepuberal calf oocytes to determine a possible cause for their low developmental competency. Calf oocytes resumed meiosis and arrested at the MII stage at rates similar to that of adult
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::454c17739aab5a6bdb622c0b581a1b38
https://doi.org/10.1002/(sici)1098-2795(199612)45:4<521::aid-mrd15>3.0.co
https://doi.org/10.1002/(sici)1098-2795(199612)45:4<521::aid-mrd15>3.0.co
Publikováno v:
Theriogenology. 45:121-130
The use of prepuberal heifers as oocyte donors in breeding programs could decrease the generation interval in cattle and increase the genetic rate of gain. While large numbers of follicles develop in response to exogenous gonadotrophins the oocytes t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ca287a75936ea378d5eb0a943fe8def
https://doi.org/10.1016/0093-691x(95)00361-b
https://doi.org/10.1016/0093-691x(95)00361-b
Autor:
J.R. Dobrinsky, R.T. Duby, J.H. Walsh, Maurice P. Boland, W.J. Enright, James F. Roche, Roberto Mantovani, E.W. Overstrom
Publikováno v:
Theriogenology. 40:313-321
Follicle stimulating hormone (FSH) is a glycoprotein hormone with a short half-life and has to be given twice daily for 3-4 days to induce superovulation in heifers. Since such a regimen is time consuming we compared the ovulatory response and yield
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f7ae55a9e102e01af54c2d38d822c80a
https://doi.org/10.1016/0093-691x(93)90269-b
https://doi.org/10.1016/0093-691x(93)90269-b
Publikováno v:
Biology of Reproduction. 47:960-969
Sperm-induced calcium (Ca2+) changes were examined in zona pellucida-intact, mature bovine eggs injected with the fluorescent Ca2+ indicator fura-2 dextran (fura-2 D). Fifty four percent (37/68) of the dye-injected, inseminated bovine eggs were ferti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d41dd803f8289841b899b9758fab458
https://doi.org/10.1095/biolreprod47.6.960
https://doi.org/10.1095/biolreprod47.6.960
Publikováno v:
Biology of Reproduction. 44:1100-1107
The use of rabbit peritoneal fluid (PF) for the culture of rabbit embryos in vitro was evaluated. Development of zygotes cultured in PF and Earle's balanced salts solution (EBSS) + 10% fetal calf serum (EBSS/FCS) was compared. The effects of increasi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aac352705fc2f0e7f993d349ed240981
https://doi.org/10.1095/biolreprod44.6.1100
https://doi.org/10.1095/biolreprod44.6.1100
Publikováno v:
Theriogenology. 35:943-952
A comparison was made of the relative effectiveness of subcutaneous ear implants containing 2 mg Norgestomet or vagnial pessaries containing 60 mg medroxyprogesterone acetate (MAP) to induce estrus and conception in dry anestrous ewes. Groups of ewes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0d12f2b103d1d986942e545dc6fab94a
https://doi.org/10.1016/0093-691x(91)90305-w
https://doi.org/10.1016/0093-691x(91)90305-w