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Use of a model to analyse the effects of continuous grazing managements on seasonal patterns of grass production
Author(s) -
JOHNSON I. R.,
PARSONS A. J.
Publication year - 1985
Publication title -
grass and forage science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.716
H-Index - 56
eISSN - 1365-2494
pISSN - 0142-5242
DOI - 10.1111/j.1365-2494.1985.tb01776.x
Subject(s) - grazing , stocking , animal production , stocking rate , seasonality , agronomy , environmental science , production (economics) , index (typography) , zoology , biology , ecology , macroeconomics , world wide web , computer science , economics
The effects of management on the seasonal patterns of production of grass swards under continuous grazing are examined using a previously described mathematical model. For continuous set‐stocking it is observed that, if the leaf area index of the sward at turn‐out is too low, there may be a sustained reduction in animal intake throughout the season. Under continuous variable stocking, where the sward is maintained at a constant leaf area index, animal intake is observed to follow broadly a pattern determined by the environmental conditions. It is concluded that grass production, in terms of both gross tissue production and animal intake, is not independent of management. Furthermore, no evidence is found to suggest that the seasonal patterns of production undercutting and grazing are the same.