Control of Ascites Syndrome By Feed Restriction Techniques

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Abstract
Feed restriction has been suggested as a means of reducing the incidence of ascites syndrome (AS) in broilers. A series of experiments investigated the use of several restriction techniques to reduce ascites while minimizing weight depression. In a preliminary experiment, feed was provided either ad libitum (i.e., full-fed), eight hours per day, or at a level 10% below that of full-fed controls. In both restriction programs, incidence of ascites syndrome was reduced significantly, but body weight gains were reduced severely. In three additional experiments, skip-a-day feeding programs implemented at various times during the starter period were compared. In two studies conducted at 1940 meters (6363 ft) above sea level, skip-a-day programs from 7–13 or 15–21 days of age significantly reduced the incidence of ascites syndrome without severe reduction in body weight gain or feed conversion. In another study at 2500 meters (8200 ft), a more severe restriction was necessary to reduce the incidence of ascites syndrome. It was concluded that skip-a-day feed restriction programs during the starting period can effectively reduce the incidence of ascites syndrome without severely compromising body weight gain or feed conversion.

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