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 Makdani, D. D. Articles by Michel, R. L. Search for Related Content PubMed Articles by Makdani, D. D. Articles by Michel, R. L.

Nutritional Value of 1,2-Dichloroethane Extracted Fish Protein Cencentrate for Young Calves Fed Milk Replacer Diets

Departments of Dairy Science and of Pathology, Michigan State University, East Lansing 48823

ABSTRACT

Reasons for poor growth of calves fed milk replacers containing l,2-dichloroethane-extracted fish protein concentrate (DCE-PPC) were investigated in three trials of 58 Holstein calves which were fed experimental replacers as the only diet for 8 weeks starting at 3 to 7 days of age.

In all comparisons, DCE-FPC was inferior to dried skimmilk as the only protein source in replacers, but DCE-FPC was superior to isopropanol-extracted FPC. Methionine addition to a replacer containing DCE-FPC did not increase calf growth. Known contaminants of DCEFPC (DCE and ehlorocholine chloride) were added to dried skimmilk rations at levels comparable to their presence in DCE-FPC with no marked effect on calf performance. Further extraction of DCE-FPC with ethanol slightly increased gains whereas water washing resulted in poorer growth (P < 0.05). Calves on PPC rations exhibited microcytic, normochronic anemia which was associated with a poorer quality protein in FPC than in dried skimmilk. Anemia was also shown on a dried skimmilk ration low in protein. Muscle cell degeneration appeared in calves fed DCE-FPC diets which was similar to that in vitamin E deficient animals.

¹ Present address: College of Agriculture, Navsari, India.