文章基本信息

标题：MANURE VALUE AND LIVEWEIGHT SWINE DECISIONS
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作者：Roka, Fritz M. ; Hoag, Dana L.
期刊名称：Journal of Food Distribution Research
印刷版ISSN：0047-245X
出版年度：1996
页码：193-202
出版社：Food Distribution Research Society
摘要：Produced as a joint product, economic theory suggests that manure value could influence livestock management decisions such as herd size and optimal market weights. This study examines the concept of manure and its connection with optimal replacement age or market weight. A model of a swine finishing operation representative of North Carolina conditions is developed. Over the range of conditions considered, manure value is negative and does not affect market weights. The marginal per head change in manure value is small relative to the marginal per head change in net returns from pork production. Further, economies of scale with respect to irrigation cause manure value to increase with herd size.
关键词：Manure value;Market weight;Response surface;Swine