Agricultural Alternatives: Feeding Beef CattleThe United States is the leading beef producer in the world. Almost 26.9 billion pounds of beef were produced in the United States in 2000 and per capita consumption totaled 78 pounds. The cattle cycle currently is in a declining phase, and several more years are expected of smaller calf crops, a slight decline in cattle feeding, small decline in slaughter rates, and stable consumption rates. Profitability in the cattle business usually increases as production declines.
Copyright © 2001
Code Number: UA298
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Air and water quality issues will influence how rations are formulated for protein.Nitrogen is as important as phosphorus in environmental regulations, and maybe even more so, because water and air quality issues are strongly influenced by this element. Odor problems are moving to the forefront of public concerns.
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PDF - http://dairyalliance.psu.edu/pdf/Nitrogenhoardsarticle.pdf
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Carbon, Methane Emissions and the Dairy CowMethane is a naturally occurring greenhouse gas produced by cattle and other animals. This publication defines dairy contributions to methane emissions and explores options for reducing methane production by dairy cattle.
Copyright © 2008
Code Number: DAS 2008-127
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PDF - http://das.psu.edu/pdf/carbonanddairy.pdf
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Contracting Certified Manure HaulersContract manure hauling offers several opportunities to producers.
Copyright © 2002
Code Number: DAS 02-46
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PDF - http://dairyalliance.psu.edu/pdf/manurehauling1.pdf
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Evaluation of Phosphorus Management Approaches for Pennsylvania
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How phosphorus in lactating cow rations affects the phosphorus in manure and soilsWhat can be done to limit manure phosphorus application to cropland? The fundamental way is to reduce the P applied in manure. This can be achieved by reducing the amount of manure applied and/or by reducing the P concentration in the manure.
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PDF - http://dairyalliance.psu.edu/pdf/phos-article2.pdf
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Interpretation of Milk Urea Nitrogen ValuesExplanation of normal values for milk urea nitrogen (MUN), guidelines for evaluating herd-level MUN results, and discussion of strategies to investigate causes of high and low MUN tests.
Copyright © 2008
Code Number: DAS 08-134
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PDF - http://das.psu.edu/pdf/interpretmunvalues08134.pdf
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Introduction to the pros and cons of compostingIf manure management is a specific problem for a dairy operation, composting can create a product that is lower in moisture and biological activity than fresh manure.
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PDF - http://dairyalliance.psu.edu/pdf/compost-article7.pdf
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Is phosphorus still a concern for reproductive performance?An increasing amount of evidence suggests that supplementation of phosphorus does not make a difference in reproductive performance of modern dairy cows fed moderate to high quality diets.
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PDF - http://dairyalliancebackup.das.psu.edu/pdf/phos-repro-article3.pdf
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Manure Sampling Instructions for Pennsylvania Feed Management PlannersThis document contains contact information for labs certified in manure analysis, description of several sampling methods, and recommendations for the number of samples needed when creating a representative sample from a group of animals. Publication targets feed management planners working to meet NRCS requirements.
Copyright © 2008
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PDF - http://das.psu.edu/pdf/manure-sampling-instructions.pdf
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Dairy and Animal Science Web Site at das.psu.edu