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 Mahan, D. C. Articles by Jensen, A. H. Search for Related Content PubMed Articles by Mahan, D. C. Articles by Jensen, A. H.

Effect of Protein Levels and Opaque-2 Corn on Sow and Litter Performance during the First and Second Lactation Periods¹

University of Illinois, Urbana 61801

Abstract

Swine diets have changed greatly during the past two decades largely due to the advent of purified and semi-purified vitamin sources. Becker, Jensen and Harmon (1966), for example, established a swine feeding program which was based on various combinations of corn and soybean meal fortified with vitamins and minerals for all phases of the growing, finishing and reproductive stages.

Relatively little data have been published on the protein and amino acid needs of the lactating sow. Work, Henke and Harris (1942) showed that litters from lactating sows fed a 10% protein diet (corn, middlings, oats, soybean meal, fish meal and leucaena glauca) gained less to 8 weeks than those from sows fed a 14% protein diet with the same feeds. Only recently, however, has there been research on the lactation phase when the corn-soybean meal combination was fed. Rippel et al. (1965) reported increased litter gains at 14 days postpartum when a 16% protein corn-soybean meal diet was compared with a 5% protein corn-soybean meal-starch diet.

¹ The authors wish to express their appreciation to Mr. J. C. Pennell and C. H. Anders for their assistance in this work.

² Present address: Department of Animal Science, Ohio State University, Columbus.