title: Effect of Sea Tangle (Laminaria japonica) and Charcoal Supplementation as Alternatives to Antibiotics on Growth Performance and Meat Quality of Ducks.
abstract: A total of 150 growing ducks were assigned to five dietary treatments to study the effect of sea tangle and charcoal (STC) supplementation on growth performance and meat characteristics in a completely randomized design. There were six replicates and five ducklings in each replication. The five dietary treatments were control, antibiotic, and 0.1%, 0.5%, and 1% STC supplemented diets. No significant differences were found on ADG, ADFI, and gain:feed among treatments in different weeks. The overall (0 to 3 weeks) ADFI decreased in antibiotic treatment (p<0.05) whereas the gain:feed increased significantly upon 1.0% STC supplementation compared to control (p<0.05). No significant variation was found in meat chemical composition except crude fat content which was high in 1.0% STC dietary group (p<0.05). Meat cholesterol was reduced in 0.1% STC group (p<0.05) compared to other dose levels while serum cholesterol was unaffected. High density lipoprotein (HDL) content was high in 1.0% STC (p<0.05) and low density lipoprotein (LDL) was low in 0.1% and 1.0% STC dietary groups (p = 0.06). No significant effect was found on the thiobarbituric acid reactive substances (TBARS) of fresh meat, whereas the TBARS value of meat preserved for 1 week was reduced significantly in STC dietary groups (p<0.05). The 0.1% STC dietary group showed an increased myristic acid (p = 0.07) content whereas, the content of eicosapentaenoic (EPA) and docosahexaenoic (DHA) acids increased in STC supplementation than antibiotic group (p<0.05). An increased concentration of omega-3 fatty acids and a reduced ratio of n-6/n-3 PUFA ratio was found upon 1.0% STC supplementation compared to antibiotic dietary group (p<0.05). Therefore, 1.0% STC dietary supplementation can be used as alternatives to antibiotics in duck production.
authors: Department of Animal Science and Technology, Sunchon National University, Jeonnam 540-742, Korea.
authors: M M
authors: MM
authors: Islam
authors: Department of Animal Science and Technology, Sunchon National University, Jeonnam 540-742, Korea.
authors: S T
authors: ST
authors: Ahmed
authors: Department of Animal Science and Technology, Sunchon National University, Jeonnam 540-742, Korea.
authors: Y J
authors: YJ
authors: Kim
authors: Department of Animal Science and Technology, Sunchon National University, Jeonnam 540-742, Korea.
authors: H S
authors: HS
authors: Mun
authors: Department of Animal Science and Technology, Sunchon National University, Jeonnam 540-742, Korea.
authors: Y J
authors: YJ
authors: Kim
authors: Department of Animal Science and Technology, Sunchon National University, Jeonnam 540-742, Korea.
authors: C J
authors: CJ
authors: Yang
keywords: Charcoal; Duck; Fatty Acid Profile; Growth Performance; Meat Composition; Sea Tangle