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Multiple Country Approach to Improve the Test-Day Prediction of Dairy Cows’ Dry Matter Intake
- Source :
- Animals, Volume 11, Issue 5, Animals : an Open Access Journal from MDPI, Tedde, A, Grelet, C, Ho, P N, Pryce, J E, Hailemariam, D, Wang, Z, Plastow, G, Gengler, N, Froidmont, E, Dehareng, F, Bertozzi, C, Crowe, M A, Soyeurt, H & GplusE Consortium 2021, ' Multiple country approach to improve the test-day prediction of dairy cows’ dry matter intake ', Animals, vol. 11, no. 5, 1316 . https://doi.org/10.3390/ani11051316, Animals, Vol 11, Iss 1316, p 1316 (2021)
- Publication Year :
- 2021
- Publisher :
- Multidisciplinary Digital Publishing Institute, 2021.
-
Abstract
- Simple Summary Dry matter intake, related to the number of nutrients available to an animal to meet its production and health needs, is crucial for the economic, environmental, and welfare management of dairy herds. Because the equipment required to weigh the ingested food at an individual level is not broadly available, we propose some new ways to approach the actual dry matter consumed by a dairy cow for a given day. To do so, we used regression models using parity (number of lactations), week of lactation, milk yield, milk mid-infrared spectrum, and prediction of bodyweight, fat, protein, lactose, and fatty acids content in milk. We chose these elements to predict individual dry matter intake because they are either easily accessible or routinely provided by regional dairy organizations (often called “dairy herd improvement” associations). We succeeded in producing a model whose dry matter intake predictions were moderately related to the actual values. Abstract We predicted dry matter intake of dairy cows using parity, week of lactation, milk yield, milk mid-infrared (MIR) spectrum, and MIR-based predictions of bodyweight, fat, protein, lactose, and fatty acids content in milk. The dataset comprised 10,711 samples of 534 dairy cows with a geographical diversity (Australia, Canada, Denmark, and Ireland). We set up partial least square (PLS) regressions with different constructs and a one-hidden-layer artificial neural network (ANN) using the highest contribution variables. In the ANN, we replaced the spectra with their projections to the 25 first PLS factors explaining 99% of the spectral variability to reduce the model complexity. Cow-independent 10 × 10-fold cross-validation (CV) achieved the best performance with root mean square errors (RMSECV) of 3.27 ± 0.08 kg for the PLS regression and 3.25 ± 0.13 kg for ANN. Although the available data were significantly different, we also performed a country-independent validation (CIV) to measure the models’ performance fairly. We found RMSECIV varying from 3.73 to 6.03 kg for PLS and 3.69 to 5.08 kg for ANN. Ultimately, based on the country-independent validation, we discussed the developed models’ performance with those achieved by the National Research Council’s equation.
- Subjects :
- Veterinary medicine
Feed conversion ratio
Article
03 medical and health sciences
chemistry.chemical_compound
Animal science
Milk yield
Lactation
SF600-1100
feed efficiency
medicine
Dry matter
dairy cows
Lactose
030304 developmental biology
Mathematics
Uncategorized
dimensionality reduction
dry matter intake
0303 health sciences
General Veterinary
0402 animal and dairy science
Geographical diversity
04 agricultural and veterinary sciences
040201 dairy & animal science
Regression
medicine.anatomical_structure
machine learning
QL1-991
chemistry
Test day
mid infrared spectra
partial least square
feed intake
Animal Science and Zoology
Zoology
artificial neural network
Subjects
Details
- Language :
- English
- ISSN :
- 20762615
- Database :
- OpenAIRE
- Journal :
- Animals
- Accession number :
- edsair.doi.dedup.....678487b08e824cf6ce087e35edb157f4
- Full Text :
- https://doi.org/10.3390/ani11051316