Zobrazeno 1 - 10
of 48
pro vyhledávání: '"R. K. Heitschmidt"'
Publikováno v:
The Professional Animal Scientist. 24:319-327
Data from a 3-yr study in Montana were utilized to evaluate impacts of season of calving, weaning strategy, and retained ownership of steer calves on enterprise profitability. Calving seasons were late winter (LW), early spring (ES), or late spring (
Publikováno v:
Agriculture, Ecosystems & Environment. 125:111-119
Grazing systems may alter botanical composition and productivity of grasslands through differential use in time, space, or intensity. Seven simulated grazing treatments were applied six years in eastern Montana, USA to determine effects on plant comm
Publikováno v:
The Professional Animal Scientist. 22:392-400
In environments where cool-season forages are the major forage resource, shifting calving season from winter to spring may match up forage nutrient supply with animal nutrient demands and thereby reduce purchased feed cost. However, calf BW at weanin
Publikováno v:
The Professional Animal Scientist. 22:386-391
The impact of varied calving and weaning times on post-weaning production of steer calves was evaluated in a 3-yr study. Steers (approximately 12 steers per calving-weaning treatment per year) born in late winter or early spring were weaned at 190 or
Autor:
K. D. Klement, Thomas W. Geary, R. K. Heitschmidt, Marshall R. Haferkamp, Michael D. MacNeil, E. E. Grings, R E Short
Publikováno v:
Journal of Animal Science. 83:2671-2683
A 3-yr study evaluated late winter (Feb), early spring (Apr), and late spring (Jun) calving systems in conjunction with varied weaning strategies on beef cow and calf performance from Northern Great Plains rangelands. Crossbred cows were randomly ass
Publikováno v:
Rangeland Ecology & Management. 58:11-19
Drought is common in rangeland environments and an understanding of its impacts on the structure and function of rangeland ecosystems is paramount for developing effective management strategies. This research was the second of a series of studies inv
Publikováno v:
The American Midland Naturalist. 141:227-237
The sustainability of natural grasslands is in large part dependent upon the successful ingress and propagation of alien plant species. We attempted to characterize the propagation potential of the dominant plant species of a southeastern Montana mix
Publikováno v:
Grass and Forage Science. 45:215-222
Permanently marked tillers of five perennial grasses, native to the mixed-grass prairie of North America, were monitored to determine patterns of defoliation, architectural attributes influencing probabilities of defoliation. and post-defoliation res
Autor:
S.L. Dowhower, R. K. Heitschmidt, William E. Pinchak, John W. Walker, J. R. Conner, S. K. Canon
Publikováno v:
Journal of Production Agriculture. 3:92-99
Livestock production from grazing is an integrated measure of the quantity and quality of forage produced and consumed. Research was conducted over 6-yr to assess the effects of four yearlong grazing treatments on cow-calf production (382 cows Bos ta
Autor:
E E, Grings, R E, Short, K D, Klement, T W, Geary, M D, MacNeil, M R, Haferkamp, R K, Heitschmidt
Publikováno v:
Journal of animal science. 83(11)
A 3-yr study evaluated late winter (Feb), early spring (Apr), and late spring (Jun) calving systems in conjunction with varied weaning strategies on beef cow and calf performance from Northern Great Plains rangelands. Crossbred cows were randomly ass