Feed delivery method affects the learning of feeding and competitive behavior in dairy heifers

Journal of Dairy Science
A M GreterT J DeVries

Abstract

The objective of this study was to determine how different feeding methods may affect the learning of feeding, sorting, and competitive behavior of growing dairy heifers. We hypothesized that heifers previously fed a total mixed ration (TMR) would distribute their feeding time more evenly throughout the day, sort the new ration less, compete less for feed, maintain a more solid fecal consistency, and continue to grow rapidly compared with heifers previously fed a top-dressed ration (TDR). Thirty-two Holstein heifers (237.2+/-21.9 d of age) were divided into 8 groups of 4 and exposed to 1 of 2 treatments for 13 wk: 1) TMR or 2) TDR, with each containing 65% grass/alfalfa haylage and 35% textured concentrate on a dry matter (DM) basis. Following this feeding period, all heifers were switched to an unfamiliar TMR containing 56.1% grass/alfalfa haylage, 21.0% corn silage, 21.0% high-moisture corn, and 1.9% mineral supplement (DM basis) for 7 wk. Group DM intakes were recorded daily throughout the experiment. Feeding behavior, recorded using time-lapse video, and sorting behavior were measured for 7 d during wk 1, 4, and 7 after the dietary change. Feeding competition was measured on d 2, 4, and 6 of each recording week. Sorting act...Continue Reading

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Jul 22, 2009·Journal of Dairy Science·T J DeVries, M A G von Keyserlingk
Mar 27, 2010·Journal of Dairy Science·A M GreterT J Devries

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Citations

Sep 17, 2013·Journal of Dairy Science·E K Miller-CushonT J DeVries
May 21, 2013·Journal of Dairy Science·E K Miller-CushonT J Devries
Mar 27, 2010·Journal of Dairy Science·A M GreterT J Devries
Dec 25, 2010·Journal of Dairy Science·E K Miller-Cushon, T J DeVries

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