Aldehyde-Treated Fish and Soybean Meals as Dietary Supplements for Growing Lambs

Nimrick, K.; Peter, A. P.; Hatfield, E. E.

doi:10.2527/jas1972.343488x

Cited by 6 publications

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Modifying soybean meal protein to reduce rumen microbial destruction and increase urea utilization in cattle diets

Thomas

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Signature was redacted for privacy. Signature was redacted for privacy. Signature was redacted for privacy. ii TABLE OF CONTENTS Page INTRODUCTION 1 LITERATURE REVIEW 4 Destruction and Synthesis of Alpha Amino Nitrogen During Rumen Fermentation 4 Protection of Dietary Proteins Against Rumen Fermentation Beneficial or Deleterious Effects of Modifying Proteins Consideration of the Nutritional Status of the Total Biological System EXPERIMENTAL PROCEDURE Laboratory Studies Selection of soybean meal Treating of soybean meal with modifying agents 41 Fozmaldehyde treatment of soybean meal Heat treatment of soybean meal 42 Wood molasses treatment of soybean meal In vitro rumen fermentation technique for testing protein modification 43 Rat growth and nitrogen balance trials for nutritional evaluation of treated soybean meal 45 Formaldehyde-treated soybean meal rat trial Heat-treated soybean meal rat trial Cattle growth studies Formaldehyde-treated soybean meal Formaldehyde-, heat-, and wood molassestreated soybean meal trial iii Page Statistical Procedures RESULTS AND DISCUSSION Laboratory Results Selection of soybean meal Soluble protein and vitro rumen fermenta tion techniques for testing protein modification In vitro rumen fermentation results Water-soluble protein determinations Rat growth and nitrogen balance trials for nutritional evaluation of treated soybean meal Formaldehyde-treated soybean meal rat trial Heat-treated soybean meal rat trial Cattle Growth Studies Formaldehyde-treated soybean meal trial Formaldehyde-, heat-, and wood molassestreated soybean meal cattle trial

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Modifying soybean meal protein to reduce rumen microbial destruction and increase urea utilization in cattle diets

Thomas

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Rumen Bypass and Protection of Proteins and Amino Acids

Chalupa¹

1975

Journal of Dairy Science

262

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Potent rumen microbial proteases and deaminases rapidly degrade protein and amino acids which are soluble in the rumen liquid phase. Because protein sources vary in their solubility, the degree of degradation in the rumen is variable. Methods of decreasing protein and amino acid degradation in the rumen include heat treatment, chemical treatment, encapsulation, use of amino acid analogs, selective manipulation of balances of rumen metabolic pathways, and esophageal groove closure. It is important that procedures do not interfere with ruminal metabolism or post-ruminal digestion. Bypassing the rumen changes sites in the digestive tract of nutrient digestion and absorption and provides a mechanism for supplementing outflow of nutrients from the rumen. A feasible approach to production of animal protein from ruminants would be utilization of nonprotein nitrogen for rumen protein production, maximization of rumen bypass of dietary protein, and supplementation with rumen nondegradable amino acids.

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Comparative Value of Soybean, Rapeseed, and Formaldehyde-Treated Rapeseed Meals in Urea-Containing Calf Rations

Sharma¹,

Ingalls²

1973

Can. J. Anim. Sci.

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Aldehyde-Treated Fish and Soybean Meals as Dietary Supplements for Growing Lambs

Cited by 6 publications

References 0 publications

Modifying soybean meal protein to reduce rumen microbial destruction and increase urea utilization in cattle diets

Modifying soybean meal protein to reduce rumen microbial destruction and increase urea utilization in cattle diets

Rumen Bypass and Protection of Proteins and Amino Acids

Comparative Value of Soybean, Rapeseed, and Formaldehyde-Treated Rapeseed Meals in Urea-Containing Calf Rations

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