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Strategies to reduce environmental pollution from animal manure: Nutritional management option - Review

Authors
Paik, IK
Issue Date
Jun-1999
Publisher
ASIAN-AUSTRALASIAN ASSOC ANIMAL PRODUCTION SOCIETIES
Keywords
pig manure; poultry manure; reduction of P excretion; reduction of N excretion; phytase; carbohydrase; chelated mineral
Citation
ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES, v.12, no.4, pp 657 - 666
Pages
10
Journal Title
ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES
Volume
12
Number
4
Start Page
657
End Page
666
URI
https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/47443
DOI
10.5713/ajas.1999.657
ISSN
1011-2367
1976-5517
Abstract
The first option in manure management is developing an environmentally sound nutritional management. This includes proper feeding programs and feeds which will result in less excreted nutrients that need to be managed. Critical components that should be controlled are N, P and minerals that are used at supranutritional levels. Amino acid supplementation and protein restriction reduce N excretion in the monogastric animals. Supplementation with enzymes, such as carbohydrases, phytase and proteases, can be used to reduce excretion of nutrients and feces by improving digestibility of specific nutrients. Growth promoting agents, such as antibiotics, beta-agonists and somatotropin, increase the ability of animals to utilize nutrients, especially dietary protein, which results in reduced excretion of N. Some microminerals, such as Cu and Zn. are supplemented at supranutritional level. Metal-amino acid chelates, metal-proteinates and metal-polysaccharide complexes can be used at a much lower level than inorganic forms of metals without compromising performance of animals. Deodorases can be used to avoid air pollution from animal manure. Nutritional management increases costs to implement. It is necessary to assess the economics in order to find an acceptable compromise between the increased costs and the benefits to the environment and production as well.
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