• Korean Journal of Poultry Science
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• v.33 no.3
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• pp.203-209
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• 2006

This study were conducted to evaluate effects of drinking concentrated liquid chitosan on performance of broiler. A total of 240 broiler chicks at 7 days of age were fed the commercial diet and water until 47 days of age, drinking water divided into three treatments, 0 ppm (control), 200 ppm (200) and 400 ppm (400) of concentrated liquid chitosan. The body weight gain and feed conversion ratio were not different by drinking concentrated liquid chitosan until 28 days of age, but body weight gain and feed conversion ratio were improve by drinking concentrated liquid chitosan over 28 days of age. Both body weight gain and feed conversion ratio were tend to improve and significantly improved (p<0.05) in 200 and 400 than control at 29 to 35 days of age, respectively. While body weight gain was tended to improve and significantly improved (p<0.05) in 400 and 200 than control at 36 to 47 days of age, respectively. There was a decrease in the microflora population of E coli. in the cecum contents and feaces of broilers by drinking concentrated liquid chitosan. This effect is higher in 400 than 200. The digestibility of dry matter and crude fat of feed were tend to increased in broiler by drinking concentrated liquid chitosan. Digestibility of crude protein of feed of broiler in 200 and 400 was significantly improved (p<0.05) as compared with those in control. These results indicated that when broiler chicks drinking concentrated liquid chitosan of 400 ppm, the improvement of the body weight gain, feed conversion ratio and feed nutrients digestibility, decreasing of microflora population of both E coli. and Salmonella in the cecum contents and feaces.

• Food Science and Industry
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• v.53 no.1
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• pp.33-42
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• 2020

In accordance with the recent trend of environmentally friendly agricultural policy, product registration of agricultural chitosan among the organic materials has been displayed in various forms such as soil improving agent, crop growth, and pest control. Chitin production industry is expected to bring competitiveness by producing low-quality and low-cost chitin for agriculture, rather than high-quality and high-cost for food, medical products. Since there are various soil microorganisms that can decompose chitin and chitosan in farm soil where crops are produced, it can be applied usefully to agricultural sites suitably for crop growth and pest control using chitin and chitosan as substrates. The purpose of this study is to compare and analyze the registration status of organic materials companies using chitin and chitosan raw materials in the organic materials information system of the NAQS, and to provide an opportunity to further expand the agricultural use of domestic chitin and chitosan.