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 Jesse, G. W. Search for Related Content PubMed Articles by Jesse, G. W.

Withdrawal of Protein Supplement during a Portion of the Finishing Phase of Swine¹

University of Missouri^,3, Columbia 65211

Abstract

Withdrawal of all of the protein supplement during a 9 kg increment of the finishing phase was studied during four trials with 321 crossbred barrows and gilts. Six dietary regimens that differed in level of crude protein during the weight period from 82 to 91 kg, 91 to 100 kg and 100 to 109 kg were compared. Average daily gain (ADG), feed efficiency and feed cost of gain for the entire growing-finishing period were similar for all six dietary regimens. However, as expected, performance during the early withdrawal period (82 to 91 kg) favored the control pigs significantly. Withdrawal of protein supplement had little effect on carcass traits. The results of this study indicate that all of the protein supplement can be removed from a corn-based finishing diet for a 9 kg increment without affecting performance substantially, if removal is after the pig reaches 91 kg. Although removal of the protein supplement during the 82 to 91 kg weight period caused the largest decrease in ADG, accumulative performance for the entire growing-finishing period did not differ as to the period of protein supplement withdrawal. However, removal of the protein supplement during the last 9 kg of gain would seem to be the most feasible from the standpoint of the producer.

¹ Contribution from the Missouri Agr. Exp. Sta. Journal Series No. 8933. Approved by the Director.

² The author wishes to thank Mr. Lyndle Vanskike for daily husbandry at the swine farm and Dr. Mark R. Ellersieck for his assistance with the statistical analysis.

³ Dept. of Anim. Sci.