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The use of linear programming to investigate the impact of replacement rate and age at first calving on gross margin of Taiwanese dairy farms

Published online by Cambridge University Press:  23 November 2017

P. Chang ,
P. Rowlinson  and
P. Cain
P. Chang*
Affiliation:
School of Agriculture, Food and Rural Development, The University of Newcastle upon Tyne, Newcastle upon Tyne, NE17RU, U.K.
P. Rowlinson
Affiliation:
School of Agriculture, Food and Rural Development, The University of Newcastle upon Tyne, Newcastle upon Tyne, NE17RU, U.K.
P. Cain
Affiliation:
School of Agriculture, Food and Rural Development, The University of Newcastle upon Tyne, Newcastle upon Tyne, NE17RU, U.K.
*
E-mail: [email protected]
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Extract

Reproductive performance has a large influence on production and profitability. In Taiwan, survey data shows an average number of lactations of 2.87 with 67% being culled before their third lactation and a first calving age (CA) of 30 months (Chang, 1988). In order to indicate the impact of reproductive performance and calving pattern on revenue, linear programming (LP) is applied to model the effect of both replacement rate (RR) and CA.

Type
Poster Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2005 , 2005 , pp. 117
Copyright
Copyright © The British Society of Animal Science 2005

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References

Chang, C. L., 1988. The removal reasons and herd life of cows of Taiwan Holstein dairy herds. J. Taiwan Livestock Res. 21(1): 11.Google Scholar
Council of Agriculture, Executive Yuan. 2003. Agricultural Statistics Yearbook. Statistics Office, COA, Executive Yuan, Taipei, Taiwan.Google Scholar