Refinar búsqueda
Resultados 71-80 de 494
Peptide AS-48 from Enterococcus faecalis for prevention and treatment of mastitis in dairy cows
2004
Davidse, E.K. | Balla, E. | Holzapfel, W.H. | Muller, C.J.C. | Cloete, P.W.P. | Dicks, L.M.T.
Effects of oxygen tension in the gas atmosphere during in vitro maturation, in vitro fertilization and in vitro culture on the efficiency of in vitro production of mouse embryos
2004
Adam, A.A.G. (Hokkaido Univ., Sapporo (Japan)) | Takahashi, Y. | Katagiri, S. | Nagano, M.
Effects of oxygen (O2) tension in the gas atmosphere during in vitro maturation (IVM), in vitro fertilization (IVF) and in vitro culture (IVC) on the efficiency of in vitro production of mouse embryos were examined. Mouse oocytes recovered from large antral follicles were subjected to IVM in Waymouth medium for 15, 16 and 17 hr under 5 or 20% O2 and then subjected to IVF and IVC under 5 or 20% O2 tension. Lowering the O2 tension in the gas atmosphere for IVM from 20 to 5% improved the cleavage rate after IVF when the oocytes were subjected to IVM for 15 hr; however, no improvement in the cleavage rate was observed when the culture period for IVM was extended to 16 and 17 hr. Lowering the O2 tension to 5% for IVM and IVC improved the development of the cleaved oocytes to the blastocyst stage, regardless of the culture period for IVM. However, the O2 tension for IVF had no remarkable effect on the subsequent embryonic development. These results demonstrate that 5% O2 is superior to 20% O2 for IVM and IVC, and suggest that 20% O2 for IVM may delay oocyte maturation and/or the acquisition of fertilizability and impair the developmental competence of oocytes.
Mostrar más [+] Menos [-]Immunohistochemical localization of steroidogenic enzymes in corpus luteum of wild sika deer during early mating season
2004
Matsuura, Y. (Hokkaido Univ., Sapporo (Japan)) | Suzuki, M. | Hayakawa, D. | Asano, M. | Sasaki, M. | Kitamura, N. | Yamada, J. | Tsubota, T. | Ohtaishi, N.
Reference serum protein and lipoprotein fractions of ostriches (Struthio camelus) in Turkey
2004
Polat, U. | Cetin, M. (Uludag Univ., Bursa (Turkey). Biochemistry Dept.) | Turkyilmaz, O. | Yalcin, A.
Development of a novel self-medicating applicator for control of internal and external parasites of wild and domestic animals
2004
Burridge, M.J. | Simmons, L.A. (Florida Univ., Gainesville (USA). Pathobiology Dept.) | Ahrens, E.H. | Naude, S.A.J. | Malan, F.S.
Linognathus weisseri n. sp. (Phthiraptera: Linognathidae) of impalas, Aepyceros melampus: description and biology
2004
Durden, L.A. (Georgia Southern Univ., Statesboro (USA). Biology Dept.) | Horak, I.G.
Limitation of the spread and impact of infectious coryza through the use of a continuous disinfection programme
2004
Bragg, R.R. (Free State Univ., Bloemfontein (South Africa). Microbial, Biochemical and Food Biotechnology Dept.)
Effect of diminazene block treatment on live redwater vaccine reactions
2004
Combrink, M.P. | Troskie, P.C. (Agricultural Research Council, Onderstepoort (South Africa). Onderstepoort Veterinary Inst.)
The testing and modification of a commercially available transport medium for the transportation of pure cultures of Haemophilus paragallinarum for serotyping
2004
Bragg, R.R. | Jansen van Rensburg, P. | Van Heerden, E. | Albertyn, J. (Free State Univ., Bloemfontein (South Africa). Microbial, Biochemical and Food Biotechnology Dept.)
Molecular epidemiology of serotype O foot-and-mouth disease virus isolated from cattle in Ethiopia between 1979-2001
2004
Sahle, M. | Venter, E.H. (Pretoria Univ., Onderstepoort (South Africa). Veterinary Tropical Diseases Dept.) | Dwarka, R.M. | Vosloo, W.
