JDS
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Journal of Dairy Science Vol. 79 No. 7 1255-1260
© 1996 by American Dairy Science Association ®
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Niezen, J. H.
Right arrow Articles by Burton, J. H.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Niezen, J. H.
Right arrow Articles by Burton, J. H.

Effect of Plane of Nutrition Before and After 200 Kilograms of Body Weight on Mammary Development of Prepubertal Holstein Heifers

J. H. Niezen 1, D. G. Grieve 1, B. W. Mcbride 1, and J. H. Burton 1

1 University of Guelph, Guelph, ON, Canada N1G 2W1

Twenty Holstein heifer calves at 138 d of age and 118 kg of BW were assigned randomly to one of four treatments in a factorial design. Heifers were fed for low (0.7 kg/d) or high (>1.0 kg/d) gain during two periods. Period 1 was from start to 200 kg of BW, and period 2 was from 200 kg of BW to slaughter, which occurred in the middle of the luteal phase following the third estrus.

Calves on the high plane of nutrition during period 2 were heavier at the end of trial and gained more BW between puberty and the end of trial. Those calves also had heavier mammary glands, which had more fat and dry fat-free tissue.

Heifers that had been raised on the low plane of nutrition throughout the trial had greater concentrations of DNA and RNA but did not have greater protein in the dry fat-free tissue. Low plane of nutrition during either period increased DNA and RNA concentration in the dry fat-free tissue. Total mass of DNA and RNA did not differ among treatments. Protein mass was increased by the high plane of nutrition during period 2.

This study indicated that dietary manipulation affects mammary dry fat-free tissue, protein, and adipose mass in the period up to and including puberty.

Key Words: plane of nutrition • nutrition • prepubertal development • mammary development

Submitted on May 25, 1995
Accepted on February 20, 1996




This article has been cited by other articles:


Home page
 J DAIRY SCIHome page
M. J. Meyer, A. V. Capuco, D. A. Ross, L. M. Lintault, and M. E. Van Amburgh
Developmental and nutritional regulation of the prepubertal heifer mammary gland: I. Parenchyma and fat pad mass and composition.
J Dairy Sci, November 1, 2006; 89(11): 4289 - 4297.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
K. A. Macdonald, J. W. Penno, A. M. Bryant, and J. R. Roche
Effect of Feeding Level Pre- and Post-Puberty and Body Weight at First Calving on Growth, Milk Production, and Fertility in Grazing Dairy Cows
J Dairy Sci, September 1, 2005; 88(9): 3363 - 3375.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1996 by the American Dairy Science Association ®.