Zobrazeno 1 - 10
of 19
pro vyhledávání: '"J. D. Popp"'
Copper and health status of cattle grazing high-molybdenum forage from a reclaimed mine tailing site
Publikováno v:
Canadian Journal of Animal Science. 83:479-485
High concentrations (21–44 mg kg-1 dry matter) of Mo have been identified in forage in several reclaimed mining areas in British Columbia. Since Mo concentrations greater than 5 mg kg-1 in forage dry matter may result in molybdenosis because of a s
Publikováno v:
Theriogenology. 55:973-981
A 2 x 3 factorial experiment was conducted to determine the effects of an implant (trenbolene acetate/estradiol or no implant) and method of estrus suppression (immunization against GnRH, melengestrol acetate, or no suppression) on growth performance
Autor:
Lance R. McMahon, Tim A. McAllister, K.-J. Cheng, Yuxi Wang, B. P. Berg, J. D. Popp, Bruce Coulman, Surya Acharya, W. Majak
Publikováno v:
Canadian Journal of Plant Science. 80:469-485
Condensed tannins (CT) are polyphenolic secondary plant products that are widespread in the plant kingdom. By definition, CT bind to protein and are regarded as "antinutritional" compounds which reduce protein digestibility. Variations in CT chemistr
Publikováno v:
Canadian Journal of Plant Science. 80:513-519
Alfalfa has been recognized for its superior yield and quality in seeded pastures. However, when grazing immature alfalfa there is a risk of animal losses due to frothy bloat in some ruminant livestock. Inclusion of at least 50% grass in the pasture
Publikováno v:
Canadian Journal of Animal Science. 79:545-548
Yearling cattle fed pasture-only for the entire grazing season were compared with cattle receiving pasture plus steam-rolled barley (SRB; 4 kg head−1 d−1) or pasture plus SRB (4 kg head−1 d−1) treated with Tween 80 at a rate of 4 kg t−1, fo
Publikováno v:
Canadian Journal of Animal Science. 79:391-395
Esophageal fistula and hand-clipped samples were collected from a 32-yr-old crested wheatgrass (Agropyron cristatum L.) pasture and an alfalfa (Medicago sativa L.)/meadow bromegrass (Bromus biebersteinii Roem & Schult.)/Russian wildrye (Psathyrostach
Autor:
Z. Mir, J. D. Popp, Alexander N. Hristov, K.-J. Cheng, S.J. Oosting, L. J. Yanke, Tim A. McAllister, R. J. Treacher
Publikováno v:
Canadian Journal of Animal Science. 79:353-360
Barley silage was sprayed with water or with a 2:1 combination of commercial cellulase and xylanase preparations, or the enzymes were introduced directly into the rumen, in a digestibility study (replicated incomplete 3 × 3 Latin square) using 10 sh
Autor:
G. A. Jones, W. Majak, Lance R. McMahon, K.-J. Cheng, J. D. Popp, Tim A. McAllister, J. W. Hall
Publikováno v:
Canadian Journal of Animal Science. 79:203-212
The effects of sainfoin (Onobrychis viciifolia) on digestion of alfalfa (Medicago sativa) were investigated in vitro and in vivo. Fresh alfalfa and sainfoin were incubated in an artificial rumen (Rusitec) in ratios of 100:0, 75:25, 50:50, 25:75 and 0
Publikováno v:
Canadian Journal of Animal Science. 77:669-676
A 4-yr experiment was conducted (1991 to 1994) near Brandon, MB, to determine the effects of grazing system (continuous and rotational) and stocking rate [light (1.1 steers ha−1); heavy (2.2 steers ha−1)] on the productivity, botanical compositio
Publikováno v:
Canadian Journal of Animal Science. 77:677-682
An experiment was conducted to determine the effects of grazing system (continuous and rotational), stocking rate (light, 1.1 steers ha−1; heavy, 2.2 steers ha−1) and season of use on forage intake and grazing behaviour of stocker cattle grazing