Zobrazeno 1 - 10
of 139
pro vyhledávání: '"A.R. Sykes"'
Publikováno v:
Animal, Vol 3, Iss 3, Pp 437-445 (2009)
The influence of dietary protein supply on the nutritional penalty associated with the acquisition phase of the immune response to gastrointestinal nematodes in lambs was investigated. Groups of lambs were offered either a low-protein diet (L; 62 g m
Externí odkaz:
https://doaj.org/article/24ab3d5f89754dc0b1299b8d09331c63
Autor:
A.R. Sykes, H.L. Xie, M. Stankiewicz, J.F. Huntley, A. Mackellar, J.R. Sedcole, R.W. McAnulty, R. Green
Publikováno v:
Animal, Vol 1, Iss 2, Pp 249-260 (2007)
It is well established that dietary protein supply can influence the peri-parturient breakdown of immunity to nematode parasites but there is no information on the importance of exposure to nematode larvae during pregnancy for this response. We inves
Externí odkaz:
https://doaj.org/article/7329c148c45f465b9cb1c90829a790fd
Publikováno v:
Research in Veterinary Science. 49:306-314
Lambs infected with Ostertagia circumcincta larvae and uninfected controls were either doses with 5 g copper oxide wire particles (COWP) or remained undosed. The change in abomasal pH was monitored from duodenal digesta and that in liver copper conce
Publikováno v:
Research in Veterinary Science. 49:132-137
Eighty-four 10-week-old lambs were used to investigate the effect of copper oxide wire particle treatment on the establishment of major gastrointestinal nematodes. They were maintained on pasture previously treated to minimise larval contamination. F
Publikováno v:
Experimental Physiology. 75:515-527
An assay for plasma osteocalcin (BGP) in ruminants is described. Satisfactory cross-reaction was obtained for bovine BGP in several species, namely ovine, cervine, caprine and human. Sample stability at room temperature, after freezing and thawing an
Publikováno v:
Proceedings of the New Zealand Grassland Association. :123-127
Effects of pasture feeding level during lactation and over summer on ewe wool growth and ovulation rate were assessed in 1983-84 and 1984-85. Two levels of pasture feeding (lactation high and lactation low) from parturition to weaning (10 weeks) prod
Autor:
Andrew W. Greer, A.R. Sykes, D.J. Bartley, A. Stanley, Robin W. McAnulty, Frank Jackson, L.J. Stenhouse, M. Stankiewicz, John F. Huntley
Publikováno v:
Veterinary parasitology. 124(1-2)
An in vitro direct challenge (IVDC) method in which abomasal tissue explants maintained at 37 degrees C in Hanks/Hepes solution (pH 7.6) in a high oxygen concentration (incubator gassed with pure oxygen and sealed prior to use) were-challenged with e
Publikováno v:
Veterinary Parasitology. 5:261-269
Groups of three 4 1 2 - month-old calves were offered a complete ruminant diet ad libitum and given, on 5 days each week for 20 weeks, either 0, 5000, 10 000 or 20 000 Cooperia oncophora larvae. All calves were killed 2 weeks after recieving the last
Publikováno v:
Research in Veterinary Science. 26:363-371
Eight four-month-old sheep were infected daily for 90 days with 2500 Trichostrongylus vitrinus larvae. Infections were patent by week 3; mean faecal egg counts reached a peak of 645 epg at week 5, then subsequently declined. Mean worm burden at slaug
Autor:
A.R. Sykes
Publikováno v:
BSAP Occasional Publication. 1:143-154
There are two basic aspects of protein metabolism the measurement of which may assist in improving sheep management, first, the extent to which the daily requirement of the animal is met and secondly, the extent of depletion of body reserves. The nee