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Table 4 Results from an investigation into sources of inaccurate data entered into a nutritional modelling software package at a nutritional assessment on an Irish dairy farm

From: An investigation into reduced milk production following dietary alteration on an Irish dairy farm

Area Investigated Result Change in energy requirements supplied compared to original model Change in protein requirements supplied compared to original model
Data entry into computer model No inaccuracy identified 0 0
Estimated average milk yield of early lactation cows Average peak yield of 35 L compared to previous estimate of 32 L -6.4% -7.1%
Maize Silage Quality Low quality of laboratory analysis results compared to estimated results (Table 2) -8.0% -4.0%
On farm production of TMR1 No difference between on farm TMR and original computer model identified 0 0
On farm production of in-parlour blended concentrate ration Difference between ration included in original model and ration fed on farm (Table 4) -2.0% -9.9%
In-parlour feeder calibration No inaccuracy identified 0 0
Settling of in-parlour blended concentrate feeds Settling of feedstuffs identified Variable Variable
Potential Cumulative Effect All above -16.4% -21.0%
  1. 1Total Mixed Ration