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AbstractFull Text

In this study, we analyzed genetic parameter for foot and claw diseases/disorders from 29 377 lactations of 11 776 Holstein cows recorded on 7 farms in the Czech Republic from 2000 to 2016. Three groups of foot and claw diseases/disorders were defined: skin diseases (SD), including digital and...

Author(s)
Zavadilová, L.; Brzáková, M.; Kasná, E.; Stípková, M.
Publisher
International Committee for Animal Recording (ICAR), Rome, Italy
Citation
ICAR Technical Series, 2018, No.23, pp 263-267
AbstractFull Text

The objective of this work was to identify which variables are related to the carcass yield, using path analysis., 120 nelore steers were put in a feedlot system until reaching the average weight of 570 kg. At the end of the feeding test the animals were weighed and there were obtained the...

Author(s)
Nieto, L. M.; Torres Junior, R. A. A.; Silva, L. O. C.; Nobre, P. R. C.; Pereira, N. R.
Publisher
International Committee for Animal Recording (ICAR), Rome, Italy
Citation
ICAR Technical Series, 2018, No.23, pp 251-253
AbstractFull Text

Reticulo-rumen sensor data were used for estrus prediction in Gir heifers. Temperature-sensing reticular boluses were orally administered to 60 heifers, and the ruminal temperature (RRT) and animal activity were recorded every 10 minutes. The cows were synchronized using a hormonal protocol....

Author(s)
Vicentini, R. R.; Oliveira, A. P.; Veroneze, R.; Montanholi, Y. R.; Lima, M. L. P.; Ujita, A.; Alves, S. F.; Lima, A. C. N. de; El-Faro, L.
Publisher
International Committee for Animal Recording (ICAR), Rome, Italy
Citation
ICAR Technical Series, 2018, No.23, pp 245-249
AbstractFull Text

On-line somatic cell count (SCC) analysers automatically test for SCC during milking for individual cows, providing farmers with more measurements than conventional herd testing. The purpose of this study was to determine whether more frequent milk sampling increases detection of elevated SCC due...

Author(s)
Zhang, I. L.; Williamson, J. H.; Lacy-Hulbert, S. J.
Publisher
International Committee for Animal Recording (ICAR), Rome, Italy
Citation
ICAR Technical Series, 2018, No.23, pp 235-244
AbstractFull Text

Recent research showed the usefulness of using estimated breeding values (EBV) for mid-infrared (MIR) based biomarkers in genetic improvement. A novel class of biomarkers was defined based on modelling responses of milk composition (e.g., mid-infrared (MIR) based) to stress expressed on continuous...

Author(s)
Mineur, A.; Mota, R. R.; Gengler, N.; Vanderick, S.; Hammami, H.
Publisher
International Committee for Animal Recording (ICAR), Rome, Italy
Citation
ICAR Technical Series, 2018, No.23, pp 229-234
AbstractFull Text

Recent research showed the usefulness of using estimated breeding values (EBV) for mid-infrared (MIR) based biomarkers in genetic improvement. Similarly, research has also shown that genetic variation is contained in the absorbance traits along the MIR band of wavelengths. Targeted extraction of...

Author(s)
Gengler, N.; Mineur, A.; Vanderick, S.; Hammami, H.
Publisher
International Committee for Animal Recording (ICAR), Rome, Italy
Citation
ICAR Technical Series, 2018, No.23, pp 221-227
AbstractFull Text

Metabolic diseases in early lactation have significant negative effects on dairy cow health and welfare, and farm profitability. The most commonly described metabolic diseases are ketosis, hypocalcaemia, and hypomagnesaemia. Subclinical metabolic diseases, which are not associated with obvious...

Author(s)
Luke, T. D. W.; Rochfort, S.; Wales, W. J.; Pryce, J. E.
Publisher
International Committee for Animal Recording (ICAR), Rome, Italy
Citation
ICAR Technical Series, 2018, No.23, pp 209-216
AbstractFull Text

The objective of this study was to evaluate the ability of mid-infrared predictions of blood BHB concentration to serve as a tool for large-scale phenotyping and management tool in New Zealand dairy farms. The data were on 553 cows (Holsteins and Holstein x Jersey crossbreds), from 2 farms located...

Author(s)
Bonfatti, V.; Turner, S. A.; Kuhn-Sherlock, B.; Phyn, C. V. C.; Pryce, J. E.
Publisher
International Committee for Animal Recording (ICAR), Rome, Italy
Citation
ICAR Technical Series, 2018, No.23, pp 203-207
AbstractFull Text

The objective of this study was to explore how mid-infrared spectroscopy (MIR)-derived energy predictions are associated with various fertility parameters and assess their use as early warning indicators of potential fertility issues. MIR-derived energy trait predictions for energy balance and...

Author(s)
Smith, S.; Coffey, M.; Wall, E.
Publisher
International Committee for Animal Recording (ICAR), Rome, Italy
Citation
ICAR Technical Series, 2018, No.23, pp 197-201
AbstractFull Text

Breed composition of the US dairy population has changed over the last two decades. The changes occurred for various reasons including: Shifting demand for milk products. Increased interest in different traits. Promotion of breeds with little previous presence in the US. Desire to capitalize on...

Author(s)
Norman, H. D.; Megonigal, J. M.; Wiggans, G. R.; Dürr, J.
Publisher
International Committee for Animal Recording (ICAR), Rome, Italy
Citation
ICAR Technical Series, 2018, No.23, pp 191-195

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