Estimation of the lactation curve of Chios ewes using a non-linear model

Ch. Ligda; G. Gabrielidis; Th. Papadopoulos; A. Georgoudis

Estimation of the lactation curve of Chios ewes using a non-linear model

In: Milking and milk production of dairy sheep and goats

Authors:

Ch. Ligda

Ch. Ligda Aristotle University of Thessaloniki, Faculty of Agriculture, Dept. of Animal Production, 54 006 Thessaloniki, Greece

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G. Gabrielidis

G. Gabrielidis N.AG.RE.F., Agricultural Research Station of Chalkidiki, 63 200 N. Moudania, Greece

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Th. Papadopoulos

Th. Papadopoulos N.AG.RE.F., Agricultural Research Station of Chalkidiki, 63 200 N. Moudania, Greece

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A. Georgoudis

A. Georgoudis Aristotle University of Thessaloniki, Faculty of Agriculture, Dept. of Animal Production, 54 006 Thessaloniki, Greece

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Type:: Chapter

Pages:: 447–449

DOI:: https://doi.org/10.1163/9789004683877_095

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Summary

Data from 7,329 lactation records of 1,033 Chios ewes from the Agricultural Research Station of Chalkidiki were fitted in a non-linear model, the parameters of which were estimated using an iterative procedure of non-linear regression. The estimated parameters were: a=657.81±17.77, b=1.04±0.015 and c=0.093±0.087. In addition, an analysis of variance showed that lactation number, litter size and season of lambing had a significant influence on the shape of the lactation curve. Lactation curves were plotted for each group and the total milk yield in any stage of the lactation period was calculated.

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Milking and milk production of dairy sheep and goats

E-Book ISBN:: 9789004683877

Publisher:: Wageningen Academic

Print Publication Date:: 01 Jan 1999

Subjects
- Life Sciences
  - General
  - Animal & Veterinary

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Estimation of the lactation curve of Chios ewes using a non-linear model

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Milking and milk production of dairy sheep and goats

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