Effects of Feeding Prepubertal Heifers a High-Energy Diet for Three, Six, or Twelve Weeks on Mammary Growth and Composition

From: Journal of Dairy Science | Date: May 1, 2008| Author: Akers, R M; Chapin, L T; Daniels, K M; Liesman, J S; Nielsen, M S Weber; VandeHaar, M J; Rincker, L E Davis | Copyright information

ABSTRACT

The experimental objective was to determine the effects of feeding prepubertal dairy heifers a high-energy diet for 3,6, or 12 wk on mammary growth and composition. Holstein heifers (age = 11 wk; body weight = 107 ± 1 kg) were assigned to 1 of 4 treatments (n = 16/ treatment). The treatment period lasted 12 wk and treatments were H0 (low-energy diet fed for 12 wk, with no weeks on the high-energy diet); H3 (low-energy diet fed for 9 wk, followed by the high-energy diet for 3 ...

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