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Full-Text Articles in Life Sciences
Corn Residue Stocking Rate Affects Cattle Performance But Not Subsequent Grain Yield, L. A. Stalker, H. Blanco-Canqui, Jennifer A. Gigax, A. L. Mcgee, T. M. Shaver, S. J. Van Donk
Corn Residue Stocking Rate Affects Cattle Performance But Not Subsequent Grain Yield, L. A. Stalker, H. Blanco-Canqui, Jennifer A. Gigax, A. L. Mcgee, T. M. Shaver, S. J. Van Donk
West Central Research and Extension Center, North Platte
This study investigated effects of stocking rate on cattle performance, quality and quantity of corn residue, and impact of residue removal on grain yield for 5 yr at the University of Nebraska – Lincoln West Central Water Resources Field Laboratory near Brule, NE. Four removal treatments—1) no removal (control), 2) grazing at 2.5 animal unit month (AUM)/ ha, 3) grazing at 5.0 AUM/ha, and 4) baling—were applied to a center pivot–irrigated corn field (53 ha). The field was divided into eight 6.6-ha paddocks to which replicated treatments were assigned. Samples of residue were collected in October and March (before and …
Late Gestation Supplementation Of Beef Cows Differing In Body Condition Score: Effects On Cow And Calf Performance, D. W. Bohnert, L. A. Stalker, R. R. Mills, A. Nyman, S. J. Falck, R. F. Cooke
Late Gestation Supplementation Of Beef Cows Differing In Body Condition Score: Effects On Cow And Calf Performance, D. W. Bohnert, L. A. Stalker, R. R. Mills, A. Nyman, S. J. Falck, R. F. Cooke
West Central Research and Extension Center, North Platte
A 2-yr study utilizing 120 mature, crossbred (Angus × Herford) cows/year, evaluated the influence of cow BCS and dried distillers grains with solubles (DDGS) supplementation during late gestation on cow performance and productivity of subsequent offspring. Treatments were arranged as a 2 × 2 factorial in a randomized complete block design with 2 BCS and with or without DDGS supplementation. Cows were nutritionally managed to enter the last trimester of gestation with a BCS of approximately 4 (LBCS) or 6 (HBCS) and were thereafter managed in a single herd (initial BCS were 4.4 and 5.7 for LBCS and HBCS treatments, …
Opportunities And Challenges From The Use Of Genomic Selection For Beef Cattle Breeding In Latin America, Hugo H. Montaldo, Eduardo Casas, José Bento Sterman Ferraz, Vicente E. Vega-Murillo, Sergio Iván Román-Ponce
Opportunities And Challenges From The Use Of Genomic Selection For Beef Cattle Breeding In Latin America, Hugo H. Montaldo, Eduardo Casas, José Bento Sterman Ferraz, Vicente E. Vega-Murillo, Sergio Iván Román-Ponce
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
In 2009, Latin American countries had approximately 401 million cattle (29% of the world’s total cattle population) and produced 8.2 million tonnes of beef, equivalent to 29% of the world’s total production (FAO, 2011). Beef in Latin American countries is produced under widely differing climates (ranging from tropical to temperate), resources available (vegetation, food), types of markets, and genetic backgrounds of the animals. The main production systems are classified as beef and dual-purpose cattle. The genetic backgrounds of animals vary from purebred European (Bos taurus taurus) or Zebu (Bos taurus indicus) to crossbreeds (Figures 1 and …
Evaluation Of Beef Cattle Operations Utilizing Different Seasons Of Calving, Weaning Strategies, Postweaning Management, And Retained Ownership, R. E. Kruse, M. W. Tess, E. E. Grings, R. E. Short, R. K. Heitschmidt, W. A. Phillips, H. S. Mayeux
Evaluation Of Beef Cattle Operations Utilizing Different Seasons Of Calving, Weaning Strategies, Postweaning Management, And Retained Ownership, R. E. Kruse, M. W. Tess, E. E. Grings, R. E. Short, R. K. Heitschmidt, W. A. Phillips, H. S. Mayeux
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
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 (LS). Each season had 2 weaning times: 190 (LW190, ES190) or 240 (LW240, ES240) d for LW and ES, and 140 (LS140) or 190 (LS190) d for LS. Backgrounding options included shipping steers to Oklahoma (OK1), or backgrounding in Montana to a constant age (MT2) or weight (MT3). Steers from OK1 and MT2 were finished in Oklahoma in confinement or via …
Post-Weaning Performance Of Steers From Varying Calving And Weaning Strategies In Montana, E. E. Grings, W. A. Phillips, R. E. Short, H. Mayeux, R. K. Heitschmidt
Post-Weaning Performance Of Steers From Varying Calving And Weaning Strategies In Montana, E. E. Grings, W. A. Phillips, R. E. Short, H. Mayeux, R. K. Heitschmidt
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
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 240 d of age, and steers born in late spring were weaned at 140 or 190 d of age after grazing with their dams on native range. Steers were pen-fed a growing diet until approximately 375 kg BW. They were then moved to an individual feeding facility and fed a higher-energy diet. Steers were allotted to harvest dates …
Levels And Changes Of Soil Phosphorus In Subtropical Beef Cattle Pastures, Gilbert C. Sigua, Mary J. Williams, Samuel W. Coleman
Levels And Changes Of Soil Phosphorus In Subtropical Beef Cattle Pastures, Gilbert C. Sigua, Mary J. Williams, Samuel W. Coleman
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
Long-term pasture management is believed to change soil chemical properties, but little is known about whether pasture management, such as fertilizer application, grazing, or haying can initiate such change in sandy and well-drained subtropical beef pastures. The objective of this study was to investigate the long term effect of pasture management (grazing+haying, GZ+HY) on soil phosphorus (P) dynamics (levels and changes) in subtropical beef cattle pastures with bahiagrass (BG, Paspalum notatum) and rhizoma peanut (RP, Arachis glabrata) with (WP) or without (WNP) P fertilization in Brooksville, FL from 1988 to 2000. Soil P dynamics in Subtropical Agricultural Research …