Download or read book Grazing System Effects on Cattle Diet Composition in the Nebraska Sandhills written by Paul Reinhold Schroeder and published by . This book was released on 2007 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Stocking Rate on Forage Nutrient Composition of Nebraska Sandhills Upland Range when Grazed in Early Summer and the Effects of Grazing on Nebraska Sandhills Meadow Forage Nutrient Composition written by Jared Vern Judy and published by . This book was released on 2014 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of this research were to 1) evaluate the effects of stocking rate on forage nutrient quality 2) quantify the relative proportions of current vs. previous year growth being consumed in early summer upland range pastures and 3) determine how grazing effects forage nutrient quality in subirrigated meadows in the Nebraska Sandhills. Experiment 1 was a two year study conducted on the experimental upland range paddocks at Gudmundsen Sandhills Laboratory. Twelve 2-hectare paddocks were assigned one of three treatments stocked at 0 (control), 0.57 (light), and 0.85 (heavy) AUM/ha. Ten 0.25 m2 quadrats were clipped per paddock during the study. Diet quality was determined using esophageally fistulated cows. Experiment 2 was conducted at a commercial ranch near Lakeside, NE. Esophageally fistulated cows sampled pastures either grazed or non-grazed throughout the grazing season starting on June 14 and ending late August in a two year study. Samples were analyzed for IVOMD, CP and NDF content. Stocked upland range paddock diet samples had decreased CP, IVOMD, and greater NDF content compared with control paddocks for diet samples. Diet samples were lower in quality compared with current year growth but greater in quality compared with previous year growth indicating cattle consumed previous year growth as part of the diet. Forage accumulation increased linearly in control paddocks but did not change in stocked paddocks. Grazed samples had lower CP content than non-grazed pastures early in the grazing season and unaffected later in the season. Neutral detergent fiber was greater in grazed compared with non-grazed pastures early in the grazing season. Diet IVOMD was most affected by grazing as season progressed. These studies indicate grazing and stocking rate effect diet quality in subirrigated meadows and upland range. Producers need to rotate cattle frequently in early summer to ensure high quality intake..
Download or read book Effect of Grazing System on Livestock Performance Botanical Composition and Standing Crop in the Nebraska Sandhills written by Mitchell B. Stephenson and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cattle Diet Selection During the Growing Season on Upland Sandhills Rangelands written by Alejandro Orozco-Lopez and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Nebraska Sandhills is diverse and complex ecosystem comprised of different topographic positions (i.e. slopes and interdunes) that influence grazing distribution, plant species composition, and cattle diet selection. The first objective of this study was to evaluate how grazing intensity influences species composition on slopes and interdunes on native rangeland within the Hillside pasture (160 ha) at the UNL Gudmundsen Sandhill's Laboratory. The second objective of this study was to evaluate forage quality of individual species from three plant functional groups (i.e. warm-season grasses, coolseason grasses, and forbs/shrubs) on native rangeland within the pasture. Forage quality samples were taken from 4 warm-season grasses, 5 cool-season grasses, 1 forb, and 2 shrubs. Samples were collected every 7-15 days from mid-May to early August in 2020 and 2021. The third objective of the study was to evaluate diet composition of cattle grazing (n = 40) within the pasture during the growing season using fecal DNA barcoding (fDNA). Fecal samples were collected from 7-8 cows every 10-20 days from early June to late-July in 2020 and 2021. Frequency of occurrence of western ragweed (Ambrosia psilostachya DC.) was 28 percentage points greater (P =0.03) and Kentucky bluegrass (Poa pratense L.) trended to be greater (P =0.07) on high grazing intensity interdunes than low intensity grazing interdunes. When averaged across the growing season, CP of forbs/shrubs was 3.3 and 2.9 percentage points greater than cool- and warm-season grasses (P 0.05). However, there were no differences (P 0.1) in CP between warmand cool-season grasses or functional group x collection date interactions. Diet selection as determined by fDNA indicated that cattle obtained most of their dietary protein from cool-season grasses (43.6% ± 1.5) and forbs (29.1% ± 1.5), while shrubs (13.0% ± 1.5) and warm-season grasses (3.5% ± 1.5) contributed significantly less (P
Download or read book Grazing Method Effects on Forage Production Utilization and Animal Performance on Nebraska Sandhills Meadow written by Miles D. Redden and published by . This book was released on 2014 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mob grazing using ultrahigh stocking densities is promoted as a tool to increase the health and productivity of grasslands by increasing nutrient cycling and soil organic matter. Mob grazing can be defined as a strategy in which area available to grazing animals is restricted to achieve stocking densities of 200,000 kg/ha or greater. Objectives were to determine herbage production, utilization, and cattle weight gains among ultrahigh stocking density grazing and more conventional grazing methods on a Sandhills subirrigated meadow. Treatments included two replications of each of the following: four-pasture rotational grazing with two occupations per pasture in an 80-day grazing season (4-PR-2), four-pasture rotational grazing with one occupation per pasture in a 60-day grazing season (4-PR-1), and a mob grazing system with one occupation per pasture in a 60-day grazing season (MOB). In each of the four years (2010 -- 2013), yearling beef cattle grazed the 4-PR-2 from mid-May through early August and the 4-PR-1 and MOB treatments from early June through early August. Stocking rates were equal among treatments within years but varied among years dependent on forage production. Stock densities were 225,000 kg/ha, 7000 kg/ha, and 5000 kg/ha for the MOB, 4-PR-1, and 4-PR-2 respectively. Herbage mass in grazing exclosures was used to estimate aboveground production in 2012 and 2013. Trampling and harvest efficiency were estimated every other week in the MOB and each time cattle changed pastures in the 4-PR-1 and 4-PR-2 during 2010, 2011, and 2013. Aboveground production did not differ among treatments. Average daily gains of MOB were low (0.2 kg/head/day) compared to 4-PR-2 gains (0.8 kg/head/day). Low gains on the MOB pastures likely were related to high levels of trampling and poor forage quality late in the grazing season.
Download or read book Masters Theses in the Pure and Applied Sciences written by W. H. Shafer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 311 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and dis seminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the ac tivity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volume were handled by an international publishing. house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 25 (thesis year 1980) a total of 10,308 theses titles from 27 Canadian and 214 United States universities. We are sure that this broader base for theses titles reported will greatly enhance the value of this important annual reference work. While Volume 25 reports theses submitted in 1980, on occasion, certain universities do report theses submitted in previous years but not reported at the time.
Download or read book Grazing Management written by John F. Vallentine and published by Elsevier. This book was released on 2000-10-25 with total page 673 pages. Available in PDF, EPUB and Kindle. Book excerpt: Grazing animals need to be managed in order to accommodate desired results in terms of animal, plant, land and economic responses. Grazing Management, Second Edition integrates principles and management techniques that apply to all grazing lands and to all grazing animals. This comprehensive volume provides authoritative review on a wide range of relevant topics: animal nutrition and nutritional balance when fed on different sorts of grazing lands; seasonal variation and limits placed on ecosystems by grazing; the effects of grazing on grazing lands; the various sorts of grazing behaviors; selecting plants and managing grazing lands, as well as many other important topics bearing upon the methods, practises and procedures for properly managing grazing lands and animals. - Animal nutrition and nutritional balance when fed on different sorts of grazing lands - Seasonal variation and limits placed on ecosystems by grazing - The effects of grazing on grazing lands - The various sorts of grazing behaviours - Selecting plants and managing grazing lands
Download or read book Rangeland Ecology Management written by and published by . This book was released on 2005 with total page 738 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Diet Composition of Sandhills Winter Range and Compensatory Growth of Yearling Steers During Summer Grazing written by Dale Downs and published by . This book was released on 1997 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Grazing Method Effects on Forage Production Utilization Animal Performance and Animal Activity on Nebraska Sandhills Meadow written by Torie Lindsey and published by . This book was released on 2016 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study was conducted on a subirrigated meadow in the Nebraska Sandhills to determine differences in aboveground plant production, utilization, trampling, harvest efficiency, ground cover, plant functional group composition and animal performance among four grazing treatments. Grazing treatments included ultrahigh stocking density, four-pasture rotation with one occupation (4-PR-1), and four-pasture rotation with two occupations (4-PR-2). Pastures were grazed from May to August in 2014 and 2015 at equal stocking rates within years but varied among years. Stocking densities were 225,000 kg ha-1 for ultrahigh stocking density, 7,000 kg ha-1 for 4-PR-1, and 5,000 kg ha-1 for 4-PR-2. Aboveground plant production did not differ among treatments. Litter mass was 2 to 4 times greater in control treatments but there were no differences among grazed treatments. Standing dead biomass did not differ among treatments. Utilization was greater in ultrahigh stocking density treatments than 4-PR-1, likely due to trampling amounts, which were greatest in ultrahigh stocking density. Remaining herbage was lowest in ultrahigh stocking density treatments. Cool-season grass composition was greatest in the 4-PR-1 treatment and lowest in the control treatment. Warm-season grass composition was greatest in 2015 for grazed treatments and in 2014 for the control treatment. Sedges and rushes did not differ among grazed treatments. Percentage forbs did not differ among treatments and peaked in 2014. There were no treatment effects on ground cover; including litter, bare ground and plant base hits. In 2014, steer daily gains among all treatments were not different. In 2015, steer average daily gains in the 4-PR-2 were greater than ultrahigh stocking density and 4-PR-1 daily gain.
Download or read book Ecology and Conservation of Great Plains Vertebrates written by Fritz L. Knopf and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: The frontier images of America embrace endless horizons, majestic herds of native ungulates, and romanticized life-styles of nomadie peoples. The images were mere reflections of vertebrates living in harmony in an ecosystem driven by the unpre dictable local and regional effects of drought, frre, and grazing. Those effects, often referred to as ecological "disturbanees," are rather the driving forces on which species depended to create the spatial and temporal heterogeneity that favored ecological prerequisites for survival. Alandscape viewed by European descendants as monotony interrupted only by extremes in weather and commonly referred to as the "Great American Desert," this country was to be rushed through and cursed, a barrier that hindered access to the deep soils of the Oregon country, the rich minerals of California and Colorado, and the religious freedom sought in Utah. Those who stayed (for lack of resources or stamina) spent a century trying to moderate the ecological dynamics of Great Plains prairies by suppressing fires, planting trees and exotic grasses, poisoning rodents, diverting waters, and homogenizing the dynamies of grazing with endless fences-all creating bound an otherwise boundless vista. aries in Historically, travelers and settlers referred to the area of tallgrasses along the western edge of the deciduous forest and extending midway across Kansas as the "True Prairie. " The grasses thlnned and became shorter to the west, an area known then as the Great Plains.
Download or read book Range and Animal Sciences and Resources Management Volume II written by Victor R. Squires and published by EOLSS Publications. This book was released on 2010-07-07 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Range and Animal Sciences and Resources Management is a component of Encyclopedia of Food and Agricultural Sciences, Engineering and Technology Resources in the global Encyclopedia of Life Support Systems (EOLSS), which is an integrated compendium of twenty one Encyclopedias. Rangelands comprise over forty percent of the earth's land surface and, as one of the most prevalent land systems on the planet, rangelands are critical habitats for myriad plant and animal species and form many of the world's major watersheds Rangelands are categorized in two distinct ways: (a) as a type of land or (b) a type of (land) use. This theme with contributions from distinguished experts in the field discusses about Range and Animal Sciences and Resources Management in several related topics. These two volumes are aimed at the following five major target audiences: University and College students Educators, Professional practitioners, Research personnel and Policy analysts, managers, and decision makers and NGOs.
Download or read book The Relations of Vegetative Composition and Cattle Grazing on Nebraska Range Land written by Thomas Elton Brinegar and published by . This book was released on 1942 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Grazing Strategy Effects on Utilization Animal Performance Aboveground Production Species Composition and Soil Properties on Nebraska Sandhills Meadow written by Aaron Shropshire and published by . This book was released on 2018 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultrahigh stocking density (a.k.a., mob grazing) is proposed as a management tool that results in greater harvest efficiency, animal performance, aboveground plant production, species richness, and soil carbon content. The study objective was to determine grazing treatment, haying, or non-defoliated control effects on forage utilization, aboveground production, animal performance, and soil properties. In 2010, 25 ha of Sandhills meadow were divided into 2 replications of 3 grazing, a hay, and control treatment. Grazing treatments were a 120-pasture rotation with one grazing cycle (mob), a 4-pasture rotation with one cycle (4PR1), and a 4-pasture rotation with two cycles (4PR2) at stocking densities of 225,000, 7,000, and 5,000 kg ha-1, respectively. Pastures were stocked by yearling steers (365 kg) at 7.4 AUM ha-1 from May to August in 2010 to 2017. Hay was harvested annually in July. Control plots were not defoliated. In grazed treatments, aboveground biomass was clipped at ground level to estimate utilization after grazing periods (24 hours, 10 and 15 days,). Aboveground biomass was clipped at ground level annually within experimental units in mid-August. Species composition was determined annually in June. Soil cores were taken in 2010 and 2018 at 0-10 cm and 10-20 cm depths. Utilization in grazed treatments differed by treatment. Mob utilization and trampled vegetation was highest followed by 4PR1 and 4PR2. Harvest efficiency did not differ by treatment. Residual standing live herbage had a treatment by year interaction where mob was usually lowest and 4PR2 was usually highest. Aboveground production did not differ among grazing and hay treatments but was greater for grazed treatments than control. Animal performance differed by treatment and year with steers gaining more in 4PR2 than the other treatments. Cool-season grasses decreased in control but increased in grazed treatments. Warm-season grasses decreased in control and were unchanged in grazed treatments. Prairie cordgrass and white clover were affected by treatment. Soil carbon, nitrogen, and bulk density did not differ among treatments. We concluded that management strategy was a driver of utilization, animal performance, and species composition. After 8 years, mob grazing was not a driver of aboveground production or soil property changes.
Download or read book Environmental Impacts of Pasture based Farming written by Richard W. McDowell and published by CABI. This book was released on 2008 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focusing on the different types of grassland farming and their impact on the environment, Environmental Impacts of Pasture-based Farming takes a broad and interdisciplinary view of the subject. The text is organized into two sections, the first addressing issues facing environmental quality, namely soil, water and air quality and socioeconomic impacts. The second section offers commentary on how the different pastoral sectors influence environmental issues. With highly tuned farm productive systems comes the risk of environmental impacts, and the purpose of this text is to highlight the areas with which these risks are associated and how best to mitigate them. While drawing attention to potential problems, chapter authors always remain conscious of the socio-economic needs of land users and the increasing world population and keep in mind that intense mitigation may be too restrictive on the farming system. This book takes an unbiased approach to improving management of grazed land and incorporates research from environmental science, agriculture, soil science and ecology.
Download or read book Environmental Effects of Conservation Practices on Grazing Lands written by and published by . This book was released on 2006 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agrindex written by and published by . This book was released on 1995 with total page 1052 pages. Available in PDF, EPUB and Kindle. Book excerpt:
