Effects of physical forms of starter and milk allowance on growth performance, ruminal fermentation, and blood metabolites of Holstein dairy calves.

Journal of Dairy Science
A JafariM H Ghaffari

Abstract

A 2 × 2 factorial study was conducted to evaluate the effects of milk allowance and physical forms of starter on growth performance, ruminal fermentation, and blood metabolites of Holstein dairy calves. A total of 48 calves [40.4 ± 1.55 kg of body weight (BW), n = 12 per treatment: 6 males and 6 females] were randomly assigned to 1 of the 4 treatments: (1) calves fed low milk allowance and finely ground (FG) starter feed [low-FG; 1.47 ± 2.12-mm geometric mean particle size (GMLP)], (2) calves fed low milk allowance and textured (TS) starter feed [low-TS, includes steam-flaked grains (corn and barley) with a pelleted supplement, GMLP 4.15 ± 1.77 mm], (3) calves fed high milk allowance and FG starter feed (high-FG); and (4) calves fed high milk allowance and TS starter feed (high-TS). The starter diets were blended with 7% of chopped alfalfa hay as a proportion of diet dry matter (DM). No milk refusal was observed in any treatments, and calves on both treatments were weaned from milk by wk 8 of the study using a gradual weaning procedure. We observed no interaction between milk allowance and physical forms of starter on feed intake, average daily gain, feed efficiency, BW, and structural growth. Calves fed high milk allowance had...Continue Reading

References

Nov 1, 1992·Journal of Dairy Science·E J DePeters, J D Ferguson
Dec 19, 2002·Journal of Dairy Science·J Jasper, D M Weary
Jan 24, 2009·Journal of Dairy Science·H G BatemanR L Schlotterbeck
Feb 23, 2011·Journal of Dairy Science·M A KhanM A G von Keyserlingk
May 25, 2011·Journal of Dairy Science·F X Suarez-MenaR L Schlotterbeck
Jan 28, 2012·Journal of Dairy Science·F SoberonM E Van Amburgh
Nov 21, 2016·Journal of Dairy Science·K RosenbergerD M Weary
Sep 7, 2017·Animal : an International Journal of Animal Bioscience·A ZeidAli-NejadM H Ghaffari

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