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South Dakota State University

Meat Science

Dry matter digestibility

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Evaluation Of An Acid Hydrolyzed Wood By-Product As An Energy And Protein Source In Rumiant Diets, Rh. Pritchard, A. N' Daiye Jan 1986

Evaluation Of An Acid Hydrolyzed Wood By-Product As An Energy And Protein Source In Rumiant Diets, Rh. Pritchard, A. N' Daiye

South Dakota Beef Report, 1986

An acid hydrolyzed wood pulp (AHWP) product that had been buffered with NH4OH was evaluated as a potential feedstuff for ruminant diets. The finely ground low dry matter (33%) material was evaluated for acceptability, digestibility and protein feeding value. In vitro fermentation indicated that fermentable dry matter was extremely low, 35.1%. Diets were not readily consumed by cattle if they contained > 60% AHWP. In vivo dry matter digestibility (DMD) coefficients where AHWP replaced corn as 0, 15, 30 or 45% of the diet were 76.5, 69.3, 65.6 and 78.5%, respectively. A similar response was noted ...


Development Of An In Vivo Model To Determine The Biological Value Of Microbial Protein, T. Fritz, R.H. Pritchard Jan 1986

Development Of An In Vivo Model To Determine The Biological Value Of Microbial Protein, T. Fritz, R.H. Pritchard

South Dakota Beef Report, 1986

A semi-purified diet (SPD) was fed to 12 wether lambs and one fistulated wether and evaluated for acceptability and ability to support growth. Ruminal pH and NH3 were monitored throughout the diet adaptation period. Treatments included three levels of dry matter intake; low intake (LI) 750 g-hd-l. d-l, medium intake (MI) 1125 g-hd-l..d-l and high intake (HI) 1500 g-hd-l.d-l. Digestibility of dry matter (DM, 70.6%), acid detergent fiber (ADF, 62.8%), nitrogen (N, 72.8%) and percentage digestible nitrogen retained (33.2%) were not different across intake levels. Indigestible ADF of the semi-purified diet appears to be ...