Using automated feeders to wean calves fed large amounts of milk according to their ability to eat solid feed

Journal of Dairy Science
Anne Marie de Passillé, Jeffrey Rushen

Abstract

Dairy calves weaned off milk at an early age show signs of hunger and can lose weight. We examined whether using automated feeders to wean calves according to individual voluntary solid feed intake reduced the effects of weaning. Female Holstein calves were housed in groups of 5 to 9. All calves were fed 12 L/d milk and ad libitum grain starter and hay from automated feeders immediately after grouping, and were allocated to 3 weaning strategies: (1) early-weaned (EW; n=14): weaning began on d 40, and milk allowance gradually decreased until weaning was complete on d 48; (2) late-weaned (LW; n=14): weaning began on d 80 and was completed on d 89; (3) weaned by starter intake (WSI; n=28): weaning began when calves consumed 200g/d of starter and was completed when the calves consumed 1,400g/d. Each day, the automated feeders recorded quantities of milk, starter, and hay eaten by all calves, as well as the frequency of visits to the milk feeder; we used unrewarded visit frequency as a sign of hunger. Body weights (BW) were recorded weekly. We estimated daily digestible energy (DE) intake for each calf based on the milk, hay, and starter consumed. Average daily gains (ADG) were expressed as percent of BW. For calves in WSI, weaning ...Continue Reading

References

Nov 15, 1997·Journal of Dairy Science·L KungR M Morris
Nov 15, 1997·Journal of Dairy Science·R H GreenwoodE C Titgemeyer
Jan 24, 2009·Journal of Dairy Science·B A RothE Hillmann
May 19, 2009·Journal of Dairy Science·T F BorderasJ Rushen
Jan 12, 2010·Journal of Dairy Science·B C SweeneyA M de Passillé
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Feb 23, 2011·Journal of Dairy Science·M A KhanM A G von Keyserlingk
Jan 28, 2012·Journal of Dairy Science·F SoberonM E Van Amburgh

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Citations

Aug 16, 2018·Animal : an International Journal of Animal Bioscience·H W NeaveM A G von Keyserlingk
Feb 7, 2020·Animal : an International Journal of Animal Bioscience·H M HammonC Koch
Nov 21, 2016·Journal of Dairy Science·K RosenbergerD M Weary
May 8, 2018·Journal of Dairy Science·Heather W NeaveMarina A G von Keyserlingk
Jun 3, 2017·Journal of Dairy Science·Catalina Medrano-GalarzaDerek B Haley
Feb 23, 2019·Animal : an International Journal of Animal Bioscience·A C WelborenJ Martín-Tereso
Aug 28, 2021·Animals : an Open Access Journal From MDPI·Laura WhalinMarina A G von Keyserlingk

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