Explanipedia

Copper and health status of cattle grazing high-molybdenum forage from a reclaimed mine tailing site Open

Wendy C. Gardner, Klaas Broersma, J. D. Popp, Z. Mir, P. S. Mir , et al. · 2003

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 bec…

A review of the effects of forage condensed tannins on ruminal fermentation and bloat in grazing cattle Open

L. R. McMahon, Tim A. McAllister, B. P. Berg, W. Majak, S. N. Acharya , et al. · 2000

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 …

Enhancing pasture productivity with alfalfa: A review Open

J. D. Popp, W. P. McCaughey, R. D. H. Cohen, Tim A. McAllister, W. Majak · 2000

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 t…

Carcass evaluation of cattle finished on alfalfa/grass pastures alone or supplemented with barley Open

W. P. McCaughey, Tim A. McAllister, J. D. Popp, J. A. Shelford, KJ Cheng · 1999

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 …

Nutrient selection by cattle from grass and grass/legume pastures Open

J. D. Popp, W. P. McCaughey, L. Thomas, R. D. H. Cohen · 1999

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 (Ps…

Grazing system and stocking rate effects on the productivity, botanical composition and soil surface characteristics of alfalfa-grass pastures Open

J. D. Popp, W. P. McCaughey, R. D. H. Cohen · 1997

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…

Effect of trenbolene acetate/estradiol implants and estrus suppression on growth performance and carcass characteristics of beef heifers Open

J. D. Popp, Tim A. McAllister, W. J. Burgevitz, R. A. Kemp, John P. Kastelic , et al. · 1997

The effects of estrus suppression (none, oral melengestrol acetate (0.4 mg d −1 ) or ovariectomy via Willis spay technique) and an anabolic implant (none or Synovex Plus ® ) on growth performance and carcass characteristics were determined…

Effect of grazing system, stocking rate and season of use on diet quality and herbage availability of alfalfa-grass pastures Open

J. D. Popp, W. P. McCaughey, R. D. H. Cohen · 1997

A 3-yr field experiment was conducted (1991–1993) near Brandon, MB to determine the effects of continuous and rotational stocking, both at heavy (2.2 steers ha −1 ) and light (1.1 steers ha −1 ) stocking rates, and of season of use on nutr…

Beef production on alfalfa-grass pastures Open

J. D. Popp · 1996

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