Making Grasslands Sustainable in Mongolia: Adapting to Climate and Environmental Change
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Hay for Horses: Alfalfa Or Grass?
HAY FOR HORSES: ALFALFA OR GRASS? Anne Rodiek1 ABSTRACT Alfalfa hay is an excellent source of energy, protein, calcium and some other nutrients for horses. Its concentrations of protein and calcium meet the nutrient needs of horses in high levels of production, such as growth and lactation, but exceed the nutrient requirements of horses in other life stages. Controversy exists over the best use of alfalfa in horse rations. Grass hays are also popular for horses because of their lower energy, protein and calcium concentrations. Grass hay meets more closely the nutrient requirements of the largest percentage of horses, the idle horse. Tradition plays a large role in the selection of feeds for horses. Hay producers can help educate horse people about what hays are most beneficial to horses in different life stages. Key Words: alfalfa hay, grass hay, horses, nutrient requirements INTRODUCTION Alfalfa hay has been both heralded and maligned as a feed for horses. Tradition holds that timothy hay and oats are the best feeds for horses, and that alfalfa and corn spell disaster. Alfalfa hay may not be the best feed for all horses in all situations, but it contains nutrients needed for many classes of horses. Grass hay falls short of meeting the nutrient requirements of high production life stages, but is an excellent filler for horses that require bulk in the diet. An understanding of the nutrient requirements of horses compared to the nutrient content of alfalfa hay or grass hay will help nutritionists, hay producers, and horse owners make informed decisions about what type of hay to feed to horses. -
Pricing Forage in the Field
Pricing Forage in Ag Decision Maker the Field File A1-65 uestions often arise about how to arrive Example 2 at a fair price for standing crops such Qas corn silage, oats, hay, and cornstalks. Silage moisture level 70% Although there are no widely quoted market Silage dry matter level 100% - 70% = 30% prices for these crops, they can be valued Silage value at 65% $28.35 per ton according to their relative feed value and $28.35 x (30 / 35) = compared to other crops that have a known Silage value at 70% market price, such as corn grain or hay. $24.30 per ton Corn Silage The quantity of silage harvested can be estimated Corn silage can be quickly valued according to the by: price of corn grain. Taking into account the value 1. weighing several loads and counting the total of the grain, the extra fertilizer cost incurred and number of loads, the harvesting costs saved, a ton of corn silage in 2. calculating the storage capacity of the silo in the field is usually worth 8-10 times as much as a which it is stored (see AgDM Information File bushel of corn, depending on the potential grain and Decision Tool C6-82, Estimated Storage yield. Silage from a field that would yield above Capacity for Grains, Forages, and Liquids, 200 bushels per acre can be valued at 10 times the www.extension.iastate.edu/agdm/wholefarm/ corn price. But if the potential yield is less than pdf/c6-82.pdf), or 100 bushels per acre, the silage should be valued 3. -
Making Grass Silage
Making Grass Silage Dr. Dan Undersander University of Wisconsin Fermentation analysis profile Legume Grass Corn Silage Silage Silage Moisture: 65%+ <65% 60-65% pH 4.0-4.3 4.3-4.7 3.8-4.2 Lactic Acid 6.0-8.0 6.0-10.0 5.0-10.0 Acetic Acid 1.0-3.0 1.0-3.0 1.0-3.0 Ethanol (% of DM) <1.0 <1.0 <3.0 Ammonia-N (% of CP) <15.0 <12.0 <8.0 Lactic: Acetic ratio 2+ 2+ 3+ Lactic (% of total acids) 60+ 60+ 70+ Dan Undersander-Agronomy © 2013 High quality grass silage results from: 1. Harvesting high quality forage 2. Inoculation 3. Proper packing 4. Covering Dan Undersander-Agronomy © 2013 Making Good Grass Silage Want 10–15% WSC (sugars) in the dry matter Young, leafy grass that has been well fertilized, grass/clover mixtures and autumn cuts tend to have low sugar levels Buffering capacity is directly related to how much sugar it takes to lower silage pH. Grass typically has a low buffering capacity and an adequate supply of sugars High rates of N increase buffering capacity. Dan Undersander-Agronomy © 2013 Grass Dry Matter Digestibility 80 70 60 Indigestible DM 50 40 Recommended harvest 30 Digestible DM 20 10 0 leaf stage boot stage heading full flower Dan Undersander-Agronomy © 2013 Dan Undersander-Agronomy © 2013 Cool Season Grasses Head only on first Cutting 2nd and later cuttings Harvest 1st cutting at boot stage are primarily leaves Boot stage Heading Dan Undersander-Agronomy © 2013 Mowing, Conditioning Mowing height - 3.5 to 4 inches Promotes rapid grass regrowth Reduces dirt contamination Condition with flail conditioner Make wide -
Using Shapley Additive Explanations to Interpret Extreme Gradient Boosting Predictions of Grassland Degradation in Xilingol, China
Geosci. Model Dev., 14, 1493–1510, 2021 https://doi.org/10.5194/gmd-14-1493-2021 © Author(s) 2021. This work is distributed under the Creative Commons Attribution 4.0 License. Using Shapley additive explanations to interpret extreme gradient boosting predictions of grassland degradation in Xilingol, China Batunacun1,2, Ralf Wieland2, Tobia Lakes1,3, and Claas Nendel2,3 1Department of Geography, Humboldt-Universität zu Berlin, Unter den Linden 6, 10099 Berlin, Germany 2Leibniz Centre for Agricultural Landscape Research (ZALF), Eberswalder Straße 84, 15374 Müncheberg, Germany 3Integrative Research Institute on Transformations of Human-Environment Systems, Humboldt-Universität zu Berlin, Friedrichstraße 191, 10099 Berlin, Germany Correspondence: Batunacun ([email protected]) Received: 25 February 2020 – Discussion started: 9 June 2020 Revised: 27 October 2020 – Accepted: 10 November 2020 – Published: 16 March 2021 Abstract. Machine learning (ML) and data-driven ap- Land-use change includes various land-use processes, such proaches are increasingly used in many research areas. Ex- as urbanisation, land degradation, water body shrinkage, and treme gradient boosting (XGBoost) is a tree boosting method surface mining, and has significant effects on ecosystem ser- that has evolved into a state-of-the-art approach for many vices and functions (Sohl and Benjamin, 2012). Grassland is ML challenges. However, it has rarely been used in sim- the major land-use type on the Mongolian Plateau; its degra- ulations of land use change so far. Xilingol, a typical re- dation was first witnessed in the 1960s. About 15 % of the gion for research on serious grassland degradation and its total grassland area was characterised as being degraded in drivers, was selected as a case study to test whether XG- the 1970s, which rose to 50 % in the mid-1980s (Kwon et Boost can provide alternative insights that conventional land- al., 2016). -
Agr79: Producing Corn for Silage
AGR-79 Producing Corn for Silage Chad D. Lee, James H. Herbek, Garry Lacefi eld, and Ray Smith, Department of Plant and Soil Sciences orn for silage has been a valuable source of feed for cattle. lage is often in the 113 to 120 days maturity range in Kentucky. CHigh-quality corn silage is obtained with a combination Depending on acreage and harvesting requirements, selecting of good crop management practices, good silage management hybrids across this range in maturity can help with harvest sched- practices, and optimum weather conditions. This publication will ules. Not only does selecting a range in maturity help spread out focus on the management practices of growing corn for silage. harvesting, but it can help spread out the workload for postemer- gence weed control and the risks associated with pollination. Crop Management Practices The growth and maturity of a corn hybrid are closely Hybrid Selection related to daily and sea- Selecting hybrids is an important decision in silage produc- sonal temperature levels. A tion. Capitalizing on high-yielding hybrids will allow you to more accurate scheme for raise more silage per acre. labeling corn hybrid matu- Each year, hybrids for grain are evaluated at seven locations rity is the growing degree across the state in the University of Kentucky Hybrid Corn Perfor- day (GDD) method. The mance Test. The hybrid performance test provides an annual report GGD method predicts corn and ranks yields from each location, averaged over all locations maturities based on mean and averaged across one, two, and three years. Land grant universi- daily temperatures during the ties in neighboring states conduct similar tests. -
From Harvest to Feed: Understanding Silage Management Contents
From Harvest to Feed: Understanding Silage Management Contents Introduction .................................................................. 1 Advantages of silage .................................................... 1 Disadvantages of silage ................................................ 1 Silage Fermentation .................................................... 2 Phases of normal fermentation ................................... 2 Undesirable fermentation ............................................ 4 Harvest Guidelines to Maximize Forage Quality and Minimize Losses ....................... 6 Pre-harvest preparations .............................................. 6 Moisture content and maturity ................................... 6 Chop length and particle size .................................... 10 Oxygen exclusion ........................................................ 11 Management practices specific to silo type ............. 12 Harvest concerns specific to crop type..................... 15 Harvest concerns related to weather ........................ 15 Silage Additives ......................................................... 19 Fermentation stimulants ............................................ 19 Fermentation inhibitors .............................................. 22 Nutrient additives ....................................................... 22 Recommendations for additive use .......................... 23 Conclusions .................................................................. 25 Feeding Management .............................................. -
What About Hay?
Small Ruminant Series What About Hay? by Dr. Rick Machen Associate Professor & Extension Livestock Specialist Texas Agric ultural Exte nsio n Service, Uvalde Rumina nts ( goats, cattle, sheep, deer, ante lope, elk, bison, etc.) are, by desi gn, grazi ng animals. Their rumen, the largest gastrointestinal compartment, is an environment wherein bacteria anaerobically ferment (digest) forages. This unique digestive process converts solar energy captured by plants into higher quality, more nutrient dense foods like milk and meat. Compared to harvest by a grazing animal, hay production is an expensive process, involving fossi l fuel, mac hinery and man- hours. Haying als o involves si gnificant s oil nutri ent relocation when compared to grazing. Protein ( nitrogen) and minerals harveste d and hauled off the soil of a hay meadow or field must be replaced if optimal hay production is to be maintained. Grazing, on the other hand, is part of a natural cycle. A portion of the nitrogen and minerals from the consumed forage is returned to the soil with urine and feces. So, whether it s feeding beef cows on the open range or goats in a small paddock, hay is not a supplement - it is a substitute. A s ubstitute for the s tanding forage or browse that makes up the diet of a ruminant animal in their natural habitat. As shown in the Table 1, the typical diet of a foraging goat ranges from !S to ½ browse and ½ to !S grass, depending upon season and availability of the respective forages. Goats are opportunistic grazers and will select a diversity of plants to result in the highest attai nable diet quality. -
What Hay Is Right for Your Livestock
What Hay Is Right For Your Livestock Tom Gallagher Capital Area Agriculture Horticulture Program Livestock Specialist What Have We Learned So Far? • Renovate fields • Establish new stands • Maintain existing stands Harvesting • Haying equipment needed • Dry hay making large round & square bales • Making balage Storage • Round bales wrapped or stacked dry • Round bales wrapped or ensiled balage • Square bales in a barn • Knowing what you have Determining Forage Quality • Forage testing • Reading forage test results • Feed value terms Forage Quality • Determines feeding value and price • Determines Dry matter Intake (DMI) • Determines what livestock you will feed it to and when • Determines who you will sell it to or who will buy it Feeding Hay To Livestock • Horses • Cattle • Goats • Sheep • Alpacas Factors To Consider When Choosing A Hay To Feed • Clean hay • Nutrient value • Type of animal being fed • Maturity Clean Hay Free Of Mold And Dust Causes of Moldy or Dusty Hay • Rained on after it was cut • Baled too green (over 15% moisture) • Baled to dry • Improper storage • Weeds • Feeding on the ground • Floods How To Determine If Hay Is Moldy Or Dusty • See the mold on the outside of the bale • Smell the mold • See the mold or dust when feeding • The bale feels wet or hot • Heavy bales Nutrient Value Of Hay Legumes- – High in protein 15-20% – High in energy (ton) 48-55% – High in calcium 0.9-1.5% Grasses- – Protein 7-11% – Energy 42-50% – Calcium .3-.5% Why the wide ranges legume to legume or grass to grass. Matching Hay Type To The Horse Not all horses have the same nutrient needs • High nutrient requirements – Growing horses – Lactating mares – Working draft breeds – Racing horses Early-maturity alfalfa, alfalfa grass or grass hay are more palatable and higher in nutrients. -
The Case of Overstocking in Northeastern Uganda
Valuing Tropical Grasslands: The Case of Overstocking in Northeastern Uganda Table of Contents 1. Introduction 2.General Characteristics Of The Study Area 3. Literature Review 4. Conceptual framework 5.Methodology and Analysis 6.Findings 7. Conclusions and Policy Implications References VALUING TROPICAL GRASSLANDS: THE CASE OF OVERSTOCKING IN NORTHEASTERN UGANDA Abstract: One of the major concerns of the world community today is the loss of large areas of tropical grasslands and forests. Although there are various causes of grassland degradation, an important cause seems to be an under-valuation of grasslands by markets and governments. This under-valuation could be because many products from these grasslands (such as animal products) are consumed indirectly, or many of the products are traded in informal markets for which there is very little data. The other important reason is that some of the services provided by tropical grasslands such as animal grazing lands, hunting areas, bio-diversity protection, recreation and to some extent watershed protection, are not traded in markets; hence, their economic values are often ignored. Even in cases where the environmental values are recognized, they may not be measured or used to promote efficient resource management. This study seeks to examine some of the causes of grassland degradation and to explore grassland valuation issues in the context of Northeastern Uganda (Karamoja). Household production and consumption model based on Gronau's model of 1977 has been used. The contingent valuation method has also been used in the analysis to establish the welfare loss to the households due to overstocking. The findings revealed that there is serious environmental degradation in Northeastern Uganda mainly due to overstocking and overgrazing. -
New Twists to Butyric Acid in Haylages and Prevention
NEW TWISTS TO BUTYRIC ACID IN HAYLAGES AND PREVENTION Preventing clostridial growth and the production of deleterious fermentation byproducts such as butyric acid, iso-butyric acid, amines, ammonia etc. is critical to insure high quality haylage crops. Until only recently it seemed that we knew how to prevent the prevention of butyric acid production in haylages. The first key to preventing clostridial fementation and or the production of butyric acid and amines was proper dry matter. Wilting small grain silages and haylages to moisture levels of 65% or less, i.e minimum dry matter of 35% or greater supposedly assured clostridial fermentations would be prevented and hence so would butyric acid and other undesirable by-products. Preventing contamination of haylage crops with excessive soil (and manure) has also been considered critical to preventing clostridia. “Ash” poses several challenges. First it is a source of undesirable micro-organisms. Second, the ash itself is a buffer, requiring more acid produced in order to reach the same terminal pH. Other key practices to preventing clostridia and butyric acid production would include filling and packing haylage crops as fast as possible to prevent prolonged plant respiration from depleting the necesaary sugars to fuel an adquate fermentation. Even when producers use best management practices, there is a preponderance of research documenting the benefit of using both bacterial inoculants and or combinations of bacteria and enzymes to help improve the fermentation of haylages and lessen the risk of clostridial fermentation. Recently however we see more and more instances of low to moderate levels of butyric acid and other evidence of clostridial fermentations even in relatively dry haylages (over 35% dry matter) that are low in ash (10-12%) that were harvested correctly, packed well and sealed well and even inoculated. -
Drivers, Process, and Consequences of Native Grassland Degradation: Insights from a Literature Review and a Survey in Río De La Plata Grasslands
agronomy Review Drivers, Process, and Consequences of Native Grassland Degradation: Insights from a Literature Review and a Survey in Río de la Plata Grasslands Guadalupe Tiscornia 1,* , Martín Jaurena 2 and Walter Baethgen 3 1 Agro-Climate and Information System Unit (GRAS), National Institute of Agricultural Research (INIA Uruguay), Ruta 48 KM.10, Canelones 90200, Uruguay 2 Pastures and Forages National Research Program, National Institute of Agricultural Research (INIA Uruguay), Ruta 5 KM.386, Tacuarembó 45000, Uruguay; [email protected] 3 International Research Institute for Climate and Society (IRI), Columbia University, 61 Route 9W, Palisades, NY 10964, USA; [email protected] * Correspondence: [email protected]; Tel.: +598-2367-7641 Received: 23 March 2019; Accepted: 5 May 2019; Published: 10 May 2019 Abstract: Natural grasslands are being progressively degraded around the world due to human-induced action (e.g., overgrazing), but there is neither a widely accepted conceptual framework to approach degradation studies nor a clear definition of what “grassland degradation” is. Most of the drivers, processes, and consequences related to grassland degradation are widespread and are usually separately quoted in the literature. In this paper, we propose a comprehensive framework with different conceptual categories, for monitoring grassland degradation, and a new definition based on current ones. We provide a conceptual update of grassland degradation based on a literature review and an expert survey, focused on the Río de la Plata grasslands (RPG). We identified “drivers” as external forces or changes that cause degradation; “processes” as measurable changes in grasslands conditions that can be evaluated using indicators; and “consequences” as the impacts or results of the process of grassland degradation. -
Climate Change Effects on Temperate Grassland and Its Implication for Forage Production: a Case Study from Northern Germany
agriculture Article Climate Change Effects on Temperate Grassland and Its Implication for Forage Production: A Case Study from Northern Germany Iraj Emadodin 1,*, Daniel Ernesto Flores Corral 2, Thorsten Reinsch 1 , Christof Kluß 1 and Friedhelm Taube 1,3 1 Group Grass and Forage Science/Organic Agriculture, Institute for Crop Science and Plant Breeding, Christian-Albrechts-University, 24118 Kiel, Germany; [email protected] (T.R.); [email protected] (C.K.); [email protected] (F.T.) 2 Global Center on Adaptation, 9747 AG Groningen, The Netherlands; fl[email protected] 3 Grass Based Dairy Systems, Animal Production Systems Group, Wageningen University (WUR), 6708 PB Wageningen, The Netherlands * Correspondence: [email protected] Abstract: The effects of climate change on agricultural ecosystems are increasing, and droughts affect many regions. Drought has substantial ecological, social, and economic consequences for the sustainability of agricultural land. Many regions of the northern hemisphere have not experienced a high frequency of meteorological droughts in the past. For understanding the implications of climate change on grassland, analysis of the long-term climate data provides key information relevant for improved grassland management strategies. Using weather data and grassland production data from a long-term permanent grassland site, our aims were (i) to detect the most important drought periods that affected the region and (ii) to assess whether climate changes and variability significantly affected Citation: Emadodin, I.; Corral, forage production in the last decade. For this purpose, long-term daily weather data (1961–2019) and D.E.F.; Reinsch, T.; Kluß, C.; Taube, F.