Body Condition Score Data of Holstein Dairy Cattle: Reproducibility and Trend across Measurements
- DOI
- 10.2991/absr.k.220309.014How to use a DOI?
- Keywords
- Dairy cows; Classifiers; Consistency; BBPTUHPT Baturraden
- Abstract
Body condition score (BCS) data is generally scored by more than rater and the data is recorded several times after calving. The objective of the study was to quantify the reproducibility measurements among raters and its trend across time of measurements. The body condition score data of Holstein Cows were extracted from the database provided by the Indonesia National Breeding Centre for Dairy and Forage. The BCS data were recorded on January-December 2015 and January-April 2016, which was 4,709 data altogether rated by 4 raters. An R package of psych was used for analyzing the raters reproducibility in which intra-class correlation coefficient (ICC) of type 3 (a model with average fixed raters) was used. The statistical analysis was performed with R program. The mean BCS of rater 1, 2, 3 and 4 were 3.12, 3.08, 3.13 and 3.12, respectively being the average BCS across raters of 3.11. The minimum and maximum of BCS were 2.5 and 4.0, respectively. As much as 14.36 % of cows were categorized to be below standard BCS. The BCS trend across months when the cows were recorded shows a slight declining pattern, however the determination coefficients of the linear regression model were very low (0.02). The intraclass correlation among raters were 0.62-0.64 and 0.87-0.88 when BCS means was included in the computation. The determination coefficient of regression lines of mean BCS on each rater were 0.62-0.80. The study concludes that the reproducibility measurements among BCS data rated by the available raters were moderate to high. The reliability of BCS data among raters could be increased for example by providing intensive training to the raters. The BCS trend over month of measurements was relatively stable. The contribution of each rater to the mean of BCS across raters variation was not equal.
- Copyright
- © 2022 The Authors. Published by Atlantis Press International B.V.
- Open Access
- This is an open access article under the CC BY-NC license.
Cite this article
TY - CONF AU - Agus Susanto AU - Datta Dewi Purwantini AU - Setya Agus Santosa AU - Dewi Puspita Candrasari PY - 2022 DA - 2022/03/29 TI - Body Condition Score Data of Holstein Dairy Cattle: Reproducibility and Trend across Measurements BT - Proceedings of the International Conference on Improving Tropical Animal Production for Food Security (ITAPS 2021) PB - Atlantis Press SP - 69 EP - 72 SN - 2468-5747 UR - https://doi.org/10.2991/absr.k.220309.014 DO - 10.2991/absr.k.220309.014 ID - Susanto2022 ER -