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An analysis of the dual purpose cattle (B. taurus x B. indicus) lactation curve

Published online by Cambridge University Press:  20 November 2017

H. Magaña-Sevilla  and
CA Sandoval-Castro
H. Magaña-Sevilla
Affiliation:
Fac. Vet. Med. & Anim. Sci. – Univ. of Yucatan, México. Apdo. 4-116 Itzimna, Mérida, Yucatán, 97100, México
CA Sandoval-Castro
Affiliation:
Fac. Vet. Med. & Anim. Sci. – Univ. of Yucatan, México. Apdo. 4-116 Itzimna, Mérida, Yucatán, 97100, México
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Extract

The shape of the lactation curve (description of milk production through lactation) which is relevant in order to predict past, current and future lactations. Curves type I show fast increment during early lactation, followed by a slow decline. However, continuous decreasing curves, named type II (Landete-Castillejos and Gallego, 2000) are frequent in tropical diary cattle, maybe due to low nutritional status (Contreras and Rincon, 1979). Curves type II could not be accurately described by Wood (1967) model. In addition, Wood’s model do not describe the inner processes in the udder. Recently, Pollot (2000) presented a mechanistic model, with 3 components and an inherent biological meaning on its parameters. The objective of the present work was to compare the ability of Wood (1967) and Pollot (2000) models to describe dual purpose cattle lactation curves and provide a first description and analysis of the B. taurus x B. indicus typical lactation curve using Pollot’s (2000) model.

Type
Poster Presentations
Information
Proceedings of the British Society of Animal Science , Volume 2002 , 2002 , pp. 191
Copyright
Copyright © The British Society of Animal Science 2002

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References

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