Nutritional Effects on Swine Nutrient Excretion and Air Quality
نویسنده
چکیده
Animal production involves the feeding and care of animals to obtain usable end products, such as meat or milk. Since the efficiency with which animals use nutrients is less than 100%, a portion of the nutrients supplied to the animal is excreted as feces. The end/byproducts of metabolism are excreted in urine. Traditionally, these excreta were used as fertilizers for crops and thus were an integral part of the nutrient cycle.
منابع مشابه
COS Jan/03 layout
deal effectively with the increased density of the pork industry in some areas and the increased public concerns regarding nutrient excretion and odour emissions. Successful management of nitrogen and phosphorus is key for sustainable pork production to address these public concerns. For example, nitrogen excretion in the form of ammonia is a concern because of its impact on the work environmen...
متن کاملThe potential ability of swine nutrition to influence environmental factors positively.
Environmental issues are a growing concern within agriculture. Several of them can be categorized under the following headings: manure storage and handling, air quality, manure nutrient concentrations, and amounts of soil nutrients. Recently introduced, EcoCare feed (Land O'Lakes Purina Feed LLC, Shoreview, MN) is a dedicated and affordable feeding program addressing manure management, ammonia ...
متن کاملA dynamic growth model for prediction of nutrient partitioning and manure production in growing-finishing pigs: Model development and evaluation.
Nutrient loading and air emissions from swine operations raise environmental concerns. The objective of the study was to describe and evaluate a mathematical model (Davis Swine Model) of nutrient partitioning and predict manure excretion and composition on a daily basis. State variables of the model were AA, fatty acids, and a central pool of metabolites that supplied substrate for lipid synthe...
متن کاملEffects of Feeding on Air Quality Measures
Livestock production causes unavoidable losses to the environment, and the concerns related to aerial emissions from livestock production is ever increasing. Losses to the atmosphere occur during respiration and from fresh and stored feces and urine. These losses may be an environmental burden as contributors to global climate change (CO2, CH4), regional particulate or acid deposition concerns ...
متن کاملNutritional and Feeding Strategies to Minimize Nutrient Losses in Livestock Manure
The livestock industry has undergone substantial changes in the past few decades. The poultry, swine, and dairy industries in particular have become increasingly concentrated. This has resulted in fewer, but larger, livestock operations throughout the country. As a result, there has been a growing concern about odor emissions from livestock operations and potential decreased water quality cause...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2010