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| Byrne, P.F.. |
| This article demonstrates a method to determine the optimal culling, policy for a sheep breeding flock. A model of the flock is constructed and profitability calculated for different age distributions of ewes. The method is illustrated with data obtained from an actual farm by a farm management consultant. |
| Tipo: Journal Article |
Palavras-chave: Livestock Production/Industries. |
| Ano: 1967 |
URL: http://purl.umn.edu/22751 |
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| Dent, J. Barry; Byrne, P.F.. |
| The development of Monte Carlo programming as a farm planning method is reviewed. The possibility of applying this method and linear programming to investment planning is discussed in relation to two main types of problem. It is concluded that Monte Carlo programming is well suited to planning problems involving investment in fixed equipment and machinery partly because of the need for integer solutions and partly because of the largely exclusive nature of the investment opportunities. Neither of these points can be directed towards the investment problem in land improvement. Present Monte Carlo methods tend to be cumbersome for this type of problem though slightly adapted algorithms may prove to be of considerable value. |
| Tipo: Journal Article |
Palavras-chave: Farm Management. |
| Ano: 1969 |
URL: http://purl.umn.edu/9228 |
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| Byrne, P.F.; Healy, A.T.A.. |
| Multi-stage linear programming is used to develop sheep replacement policies in a number of different situations. Policies are developed for eight and sixteen year periods assuming, firstly a constant feed supply, and secondly, an increasing feed supply over the period. The results show the optimal flock composition together with the sheep sale activities for each year of the plan. The marginal value products indicate which constraints are the most important and whether any should be relaxed in order to make the model more realistic. It is concluded that it is not necessary to use a very long planning period in order to determine the activities for the early years. The results from the shorter planning period appear to be consistent with long-term goals. |
| Tipo: Journal Article |
Palavras-chave: Livestock Production/Industries. |
| Ano: 1969 |
URL: http://purl.umn.edu/23003 |
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