Evaluation of an application for dynamic feeding of dairy cows

G. André; E.J.B. Bleumer; G. van Duinkerken

Evaluation of an application for dynamic feeding of dairy cows

In: Precision livestock farming '09

Authors:

G. André

G. André Wageningen University and Research Centre, Animal Sciences Group, Business unit Animal Production, P.O. Box 65, 8200 AB Lelystad, the Netherlands; geert.andre@wur.nl

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E.J.B. Bleumer

E.J.B. Bleumer Wageningen University and Research Centre, Animal Sciences Group, Business unit Animal Production, P.O. Box 65, 8200 AB Lelystad, the Netherlands; geert.andre@wur.nl

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G. van Duinkerken

G. van Duinkerken Wageningen University and Research Centre, Animal Sciences Group, Business unit Animal Production, P.O. Box 65, 8200 AB Lelystad, the Netherlands; geert.andre@wur.nl

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Type:: Chapter

Pages:: 25–32

DOI:: https://doi.org/10.3920/9789086866632_004

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Dynamic feeding is an innovative application for concentrate feeding of dairy cows. Daily individual settings are derived from the actual individual milk yield response to concentrate intake. This response is estimated using an adaptive dynamic linear model. Optimal daily individual settings for concentrate supply are directed to achieve the maximum gross margin milk returns minus concentrate costs. This response curve plays a key role in the application. The response curve is derived from a mechanistic model for milk production and can also be established empirically from daily milk yield development during early lactation when concentrate supply increase is linear. A test application for dynamic feeding ran for several months in 2008 and results from 145 cows at one farm on 17 December 2008 have been used to demonstrate the variation in individual response. The gross margin, milk returns minus concentrate costs, varied from 2.52 to 26.32 €/day. The estimated response parameters provide insight in variation between individuals concerning the effects of concentrate and base ration intake on daily milk yield. Economical and nutritional aspects can be evaluated for each individual. Individual dynamic feeding towards an economic optimum indicates that excessive changes in individual bodyweight can be prevented.

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Precision livestock farming '09

E-Book ISBN:: 9789086866632

Publisher:: Wageningen Academic

Print Publication Date:: 30 Oct 2009

Subjects
- Life Sciences
  - General
  - Animal & Veterinary

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Evaluation of an application for dynamic feeding of dairy cows

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Precision livestock farming '09

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