land will be required to produce the feed-
stuffs needed for the meat that is consumed,
and the greater nitrogen retention in the
animal for lean tissue growth will result in
less nitrogen excreted as waste and less total
volume of waste. Phenethanolamine reparti-
tioning agents that are demonstrated to be
safe and efficacious will provide the meat
industry with a powerful tool to aid in
the production of health-conscious meat
products.Acknowledgements
The authors express their appreciation to
Drs Charles K. Smith II, Bruce Martin, D.
Jay Jones, Emerson Potter, Thomas Jeffers,
Aubrey Schroeder, Marlene Cohen, Gail
Williams and Ron Schoner for their review
of this manuscript, and to Ms Marcia
Draper for assistance with manuscript
preparations.Phenethanolamine Repartitioning Agents 87Segment of
meat industryLivestock
producersMeat
packersMeat
processorsConsumersEnvironmentBenefit of phenethanolamine
repartitioning agentImproved efficiency of lean
meat production
Fewer days to market weight
Less feed requiredIncreased dressing percentage
Leaner, more valuable carcassesLess waste fat trim
Carcasses more suitable for low-fat
processed products
(reduced seam fat)Leaner products
Products with reduced cholesterol
Reduced cost of meat productsImproved stewardship of farmland resources
Decreased nitrogen excretion
Decreased phosphorus excretion
Decreased total wasteFig. 4.9.Potential impact of phenethanolamine repartitioning agents on various segments of the meat
industry. (Adapted from Anderson et al., 1991.)04 Farm Animal Metabolism 04 20/4/00 12:02 pm Page 87