| A model for an economically optimal replacement of a breeder flock. | |
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MedLine Citation:
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PMID: 23155040 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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A deterministic model is developed to support the tactical and operational replacement decisions at broiler breeder farms. The marginal net revenue approach is applied to determine the optimal replacement age of a flock. The objective function of the model maximizes the annual gross margin over the flock's production cycle. To calculate the gross margin, future egg production, fertility, or hatchability of the eggs, revenues and variable costs of a flock were estimated. For tactical decisions, the optimal laying length is the age at which the average gross margin of an average flock is maximal. For operational decisions, a flock should be replaced when the marginal gross margin of a replaceable flock is less than the average gross margin of an average flock. To demonstrate the model, a broiler breeder flock from a Dutch breeder farm was used. A sensitivity analysis showed that the optimal replacement decision, for both tactical and operational management, is sensitive to the decrease in the weekly egg production after the peak and the prices of feed and hatching eggs. The effect of the decrease in weekly fertility after the peak on the replacement decision is related to the payment system for hatching eggs. |
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Authors:
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Hurria Yassin; Annet G J Velthuis; Gerard W J Giesen; Alfons G J M Oude Lansink |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Poultry science Volume: 91 ISSN: 0032-5791 ISO Abbreviation: Poult. Sci. Publication Date: 2012 Dec |
Date Detail:
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Created Date: 2012-11-16 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0401150 Medline TA: Poult Sci Country: United States |
Other Details:
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Languages: eng Pagination: 3271-9 Citation Subset: IM |
Affiliation:
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Business Economics Group, Wageningen University, Hollandseweg 1, 6706 KN Wageningen, the Netherlands. |
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Descriptor/Qualifier:
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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