Persent Ase Bobot Saluran Pencernaan dan Organ Dalam Itik Lokal (Anas Platyrhyncos) Jantan yang Diberi Berbagai Taraf Kayambang (Salvinia Molesta) dalam Ransumnya
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This experiment was conducted to determine the effect of kayambang (Salvinia molesta) in the ration on percentage of weight and length of male local ducks digestive tract and intemaln organ. Sixty mal local ducks from 120 ducks (eight weeks old) were observed in this experiment. The ducks has been reared for four weeks. The diet consisted of five different levels of Salvinia molesta (0; 10; 20; 30 and 40%) and formulated isocalorie (2900 kkal metabolizable energy/kg) and isonitrogenous (16.1% crude protein). A complete randomized design was used in this experiment. The ducks were assigned to 20 battery cages in-group of six. The samples were observed of three birds per treatment-replicate. The parameters had measured were live weight of gizzard. liver and pancreas. The date were analyzed by General Unear Model of SAS softwere. When significant effects were found. comparison among multiple means were made by Duncan's multiple range test. The result showed that Salvinia molesta decreased (P<O,Ol) live weight, but increased (P<0.01) percentage of weight and length of esophagus-crop and caeca; percentage of weight of gizzard and pancreas; percentage of length of proventriculus, duodenum, jejunum, ileum, and total intestine. Salvinia molesta in the diet also have significantly increased (P<O.OS) the percentage of weight of duodenum and length of colon. Percentage of weight of carcass, proventriculus, liver, jejunum, ileum, total intestine and colon were not affected by Salvinia molesta. The experiment conclude that the ducks (4-8 weeks of old) could tolerate diet containing until 40% Salvinia molesta. . Key words: digestive tract, local duct, diet.