HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by McCullough, M. E. Search for Related Content PubMed Articles by McCullough, M. E.

Use of Digestible Dry Matter by Dairy Cows Group-Fed Silage¹

Georgia Experiment Station, Experiment

ABSTRACT

Our current feeding standards for dairy cows were gained from research done near the turn of the century with stall-fed cows, under feeding conditions quite different from those practiced by our present dairyman. This is particularly true for dairymen in the southeastern United States, where cows are group-fed hay and silage, with only limited attention being given to the special needs of individual cows. Few efforts have been made in recent years to recalculate feeding standards and these have led to controversy.

Reid (5) presented data indicating that the TDN requirement for producing a pound of 4% FCM increases at higher levels of milk production, but Huffman (3) was unable to find this decrease in efficiency up to 20,000 lb of milk per cow per year. Wallace (6) reported that the TDN requirement for maintenance of 1,000 lb body weight was 12.9 under free grazing conditions in New Zealand, but Corbett (2) was unable to find a similar increase during strip-grazing compared with indoor feeding.

¹ Georgia Experiment Station, Journal Series 425.