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RESEARCHERS SHOW BENEFITS OF ZINC SUPPLEMENTATION IN BROILERS
Source: U.S. Poultry & Egg Association news release

USPOULTRY and the USPOULTRY Foundation announce the completion of a funded research project at North Carolina State University, Raleigh, N.C., that showed benefits of zinc supplementation in broilers. The project is part of the Association's comprehensive research program encompassing all phases of poultry and egg production and processing.

A brief summary of the completed project is shown below. A complete report, along with information on other Association research, may be obtained by going to USPOULTRY's website, www.uspoultry.org.

The project summary is as follows:
PROJECT #F040: LIVE PERFORMANCE, CARCASS YIELD AND BREAST MEAT DISCOLORATION OF BROILER CHICKENS FED DIETS SUPPLEMENTED WITH DIFFERENT LEVELS OF ZINC, COPPER AND IRON
(Dr. Douglas Smith, Dr. John Brake, Rasha Qudsieh, North Carolina State University, Raleigh, N.C.)

Supplementation of zinc (ZN) and copper (CU) in broiler diets is a common practice. It has been postulated that this supplementation may be involved in the occasional red discoloration of fully cooked poultry products.

Researchers at North Carolina State University, led by Dr. Doug Smith, recently studied the effects of ZN and CU supplementation on the live performance, carcass yield and breast meat color of broilers. They found that neither ZN nor CU supplementation were associated with discoloration of the meat, however redness of the bone marrow was associated with ZN supplementation.

In male broilers body weight gain, feed conversion and breast fillet weights were all enhanced by ZN supplementation. Similar effects were not seen in female broilers. This research indicates that supplementation of 120 mg/kg ZN has important potential benefits for broiler production.

For a detailed summary, visit: http://www.uspoultry.org/research/resproj/PROJ_F040.html.


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