Limits...
Monitoring cow comfort and rumen health indices in a cubicle-housed herd with an automatic milking system: a repeated measures approach.

Vanhoudt A, van Winden S, Fishwick JC, Bell NJ - Ir Vet J (2015)

Bottom Line: The objective of this study was to quantify the variation of indices of cow comfort and rumen health in a herd with an automatic milking system for which husbandry was relatively constant, in order to propose an alternative approach to optimising the use of these indices when continuous monitoring is not available.The point of lowest variation in the indices was determined as that with the lowest coefficient of variation.This suggests these measures should be repeated on several consecutive days, according to population size and wanted margin of error, to be representative and useful.

View Article: PubMed Central - PubMed

Affiliation: Department of Farm Animal Health, Utrecht University, Veterinary Faculty, Yalelaan 7, 3584CL Utrecht, The Netherlands ; The Royal Veterinary College, Department of Production and Population Health, Hawkshead Lane, Hatfield, Hertfordshire AL9 7TA UK.

ABSTRACT

Background: Cow rumination and lying behaviour are potentially useful and interrelated indicators of cow health and welfare but there is conflicting evidence about how reliable these measures are. The objective of this study was to quantify the variation of indices of cow comfort and rumen health in a herd with an automatic milking system for which husbandry was relatively constant, in order to propose an alternative approach to optimising the use of these indices when continuous monitoring is not available. During a period of 28 days, standing index, cud chewing index and rumination index were observed.

Results: The daily mean standing index ranged between 9.0 and 18.0 per cent, cud chewing index between 43.5 and 74.0 per cent, and rumination index between 49.0 and 81.0 per cent. The point of lowest variation in the indices was determined as that with the lowest coefficient of variation. The coefficient of variation was lowest for data collected between 240 and 270 minutes after refreshing of the bedding material on the cubicles for both the standing index and rumination index, and for data collected between 120 and 150 minutes after refreshing of the bedding material on the cubicles for the cud chewing index.

Conclusions: In spite of relative constant husbandry practices in a herd with an automatic milking system, the variation in the standing index, cud chewing index and rumination index was still considerable. This suggests these measures should be repeated on several consecutive days, according to population size and wanted margin of error, to be representative and useful.

No MeSH data available.


Related in: MedlinePlus

Mean rumination index (RI %) ± SE on each day of the study
© Copyright Policy - open-access
Related In: Results  -  Collection

License 1 - License 2
getmorefigures.php?uid=PMC4465732&req=5

Fig3: Mean rumination index (RI %) ± SE on each day of the study

Mentions: Each index was calculated for a total of 112 hourly observations, with a median of five (IQR two) observations per day. The mean SI for the observations on each day, hereafter named ‘daily’, ranged between 9.0 and 18.0 per cent, daily mean CudCI between 43.5 and 74.0 per cent, and daily mean RI between 49.0 and 81.0 per cent. The difference between the mean CudCI and RI for each day was 8.1 per cent ± 0.4 (mean ± se). The within and between day variation during the observed timeframe of the SI, CudCI and RI is shown in Figs. 1, 2 and 3 respectively. For each time-slot following the refreshing of the bedding material on the cubicles, the mean, sd and CV for the SI, CudCI and RI was calculated (Table 1). The CV was lowest for data collected between 240 and 270 minutes after refreshing of the bedding material on the cubicles for both the SI (CV = 23.7) and RI (CV = 7.7) and for data collected between 120 and 150 minutes after refreshing of the bedding material on the cubicles for the CudCI (CV = 10.5).Fig. 1


Monitoring cow comfort and rumen health indices in a cubicle-housed herd with an automatic milking system: a repeated measures approach.

Vanhoudt A, van Winden S, Fishwick JC, Bell NJ - Ir Vet J (2015)

Mean rumination index (RI %) ± SE on each day of the study
© Copyright Policy - open-access
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC4465732&req=5

Fig3: Mean rumination index (RI %) ± SE on each day of the study
Mentions: Each index was calculated for a total of 112 hourly observations, with a median of five (IQR two) observations per day. The mean SI for the observations on each day, hereafter named ‘daily’, ranged between 9.0 and 18.0 per cent, daily mean CudCI between 43.5 and 74.0 per cent, and daily mean RI between 49.0 and 81.0 per cent. The difference between the mean CudCI and RI for each day was 8.1 per cent ± 0.4 (mean ± se). The within and between day variation during the observed timeframe of the SI, CudCI and RI is shown in Figs. 1, 2 and 3 respectively. For each time-slot following the refreshing of the bedding material on the cubicles, the mean, sd and CV for the SI, CudCI and RI was calculated (Table 1). The CV was lowest for data collected between 240 and 270 minutes after refreshing of the bedding material on the cubicles for both the SI (CV = 23.7) and RI (CV = 7.7) and for data collected between 120 and 150 minutes after refreshing of the bedding material on the cubicles for the CudCI (CV = 10.5).Fig. 1

Bottom Line: The objective of this study was to quantify the variation of indices of cow comfort and rumen health in a herd with an automatic milking system for which husbandry was relatively constant, in order to propose an alternative approach to optimising the use of these indices when continuous monitoring is not available.The point of lowest variation in the indices was determined as that with the lowest coefficient of variation.This suggests these measures should be repeated on several consecutive days, according to population size and wanted margin of error, to be representative and useful.

View Article: PubMed Central - PubMed

Affiliation: Department of Farm Animal Health, Utrecht University, Veterinary Faculty, Yalelaan 7, 3584CL Utrecht, The Netherlands ; The Royal Veterinary College, Department of Production and Population Health, Hawkshead Lane, Hatfield, Hertfordshire AL9 7TA UK.

ABSTRACT

Background: Cow rumination and lying behaviour are potentially useful and interrelated indicators of cow health and welfare but there is conflicting evidence about how reliable these measures are. The objective of this study was to quantify the variation of indices of cow comfort and rumen health in a herd with an automatic milking system for which husbandry was relatively constant, in order to propose an alternative approach to optimising the use of these indices when continuous monitoring is not available. During a period of 28 days, standing index, cud chewing index and rumination index were observed.

Results: The daily mean standing index ranged between 9.0 and 18.0 per cent, cud chewing index between 43.5 and 74.0 per cent, and rumination index between 49.0 and 81.0 per cent. The point of lowest variation in the indices was determined as that with the lowest coefficient of variation. The coefficient of variation was lowest for data collected between 240 and 270 minutes after refreshing of the bedding material on the cubicles for both the standing index and rumination index, and for data collected between 120 and 150 minutes after refreshing of the bedding material on the cubicles for the cud chewing index.

Conclusions: In spite of relative constant husbandry practices in a herd with an automatic milking system, the variation in the standing index, cud chewing index and rumination index was still considerable. This suggests these measures should be repeated on several consecutive days, according to population size and wanted margin of error, to be representative and useful.

No MeSH data available.


Related in: MedlinePlus