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


     

Journal of Dairy Science Vol. 56 No. 10 1276-1282
© 1973 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 Google Scholar
Google Scholar
Right arrow Articles by Bouchard, R.
Right arrow Articles by Conrad, H. R.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Bouchard, R.
Right arrow Articles by Conrad, H. R.

Sulfur Requirement of Lactating Dairy Cows. I. Sulfur Balance and Dietary Supplementation1

R. Bouchard2 and H. R. Conrad

Department of Dairy Science, Ohio Agricultural Research and Development Center, Wooster 44691

ABSTRACT

Two experiments measured the effects of sulfur supplementation of rations for lactating cows. In Experiment 1, a basal diet (Ration 1) containing .104: sulfur was a semipurified concentrate mix and corn silage fed in a 1:l ratio on a dry basis. Sodium sulfate was added to the basal diet to produce rations containing .15% (Ration 2) and .18% sulfur (Ration 3). The sulfur content of the basal ration was also increased to .1% by supplementation with methionine hydroxy analog (Ration 4) Sulfur supplementation of the basal diet increased dry matter intake and dry matter digestibility. Methionine hyhoxy analog fed at 43 g/day decreased dry matter intake to the intake of the sulfur deficient diet without affecting daily milk production. Both sodium sulfate and methionine hydroxy analog improved the sulfur balance of lactating cows with supplements .15 and .18% sulfur in the complete diet.

In Experiment 2, a basal diet containing .06% sulfur was supplemented with either sodim sulfate or a mixture of potassium and magnesium sulfate sulfur to .18 and .24% in the compIete diet. The low-sulfur diet decreased dry matter intake, dry matter digestibility, and milk production and caused the sulfur balance to be negative. Regression analysis showed that dietary .12% sulfur would approximate sulfur balance and .18% sulfur would allow for a mean positive balance of 4 g of sulfur daily in cows producing between 8 and 37 kg milk.

FOOTNOTES

1 Approved as Journal Article no. 74-72, Ohio Agricultural Research and Development Center, Wooster 44691.

2 Present address: Station De Recherches, Lennoxville, Quebec, Canada.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1973 by the American Dairy Science Association ®.