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


     

Journal of Dairy Science Vol. 64 No. 1 140-145
© 1981 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 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 Google Scholar
Google Scholar
Right arrow Articles by Keys, J. E.
Right arrow Articles by Smith, L. W.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Keys, J. E.
Right arrow Articles by Smith, L. W.

Effect of Poultry Excreta and Ground Ear Corn on Growth, Intake, and Digestion of Corn Stover Silage Diets by Yearling Dairy Heifers1

J. E. Keys2 and L. W. Smith3

US Department of Agriculture, Science and Education Administration, Agricultural Research, Beltsville, MD 20705

ABSTRACT

Four complete diets, 1) 67.5% corn stover: 20.2% ground ear corn: 12.3% fresh poultry excreta (dry matter), 2) 52.7% corn stover:38% ear corn:9.3% poultry excreta, 3) 90% whole corn plant: 10% poultry excreta, and 4) 95.2% whole corn plant:4.8% soybean meal, were stored for 45 days above ground in sealed .02-cm plastic bag silos 2.4 m wide x 16.8 m long. Resulting silages were fed to meet National Research Council recommendations of dry matter intake for .70-kg average daily gain to four groups of seven yearling Holstein heifers for 180 days. Heifers were housed in an open free-stall shed and fed individually via electronic feedgates. Four additional heifers were fed the same diets simultaneously in a 4 x 4 Latin square digestion trial. Dry matter intakes and average daily gains by the growth trial heifers fed diets in order were 6.3, .40; 5.8, .51; 7.3, .45; and 7.4, .56 kg. Dry matter, energy, and crude protein digestibilities for diets in order were 60.4, 61.5, and 45.7; 65.7, 66.3, and 50.8; 68.8, 68.0, and 53.9; and 66.7, 69.2, and 53.7%. While intakes of corn stover diets were lower than whole corn plant diets, average daily gains and digestibility were not different.

FOOTNOTES

1 This research was part of regional research project NC-119, Improving Large Dairy Herd Management Practices.

2 Milk Secretion and Mastitis Laboratory, Animal Science Institute.

3 Ruminant Nutrition Laboratory, Animal Science Institute.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1981 by the American Dairy Science Association ®.