EXST7015 Daily Design 3 Carefully read the description of the experiment below. Be prepared to answer the questions that follow the design description as a class quiz. An experiment was conducted to examine the effect of supplementing different green feeds (water spinach, sweet potato leaves and duckweed) to broken rice based diets on performance of various factors in 204 hens during a 17 week experiment. The experiment was carried out in the experimental farm of Cantho University from October 2003 to February 2004. The experimental animals were female Luong Phuong chickens at 4 weeks of age. The experiment consisted of 4 diets with 3 replicate pens for each diet with 17 chickens per pen. The diets were (1) Control diet: Mixed diet without any green feed, (2) DW: Mixed diet + duckweed ( ad libitum ), (3) WS: Mixed diet + Water spinach ( ad libitum ) and (4) SP: Mixed diet + Sweet potato vines ( ad libitum ). A number of variables were measured on the
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