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% |