Korean Journal of Veterinary Research (대한수의학회지)
- Volume 38 Issue 1
- /
- Pages.71-76
- /
- 1998
- /
- 2466-1384(pISSN)
- /
- 2466-1392(eISSN)
A study on efficacy of chitosan on bovine mastitis
젖소 유방염에 대한 키토산의 효능에 관한 연구
-
Moon, Jin-san
(National Veterinary Research Institute, RDA)
;
- Joo, Yi-seok (National Veterinary Research Institute, RDA) ;
-
Ku, Bok-gyeong
(National Veterinary Research Institute, RDA)
;
- Kim, Jong-yeom (National Veterinary Research Institute, RDA) ;
- Kim, Duck-won (Samyang Pharma-Chemical Co., LTD.) ;
-
Park, Yong-ho
(Seoul National University)
;
- Hahn, Tae-wook (University of Georgia)
-
문진산
(수의과학연구소)
;
- 주이석 (수의과학연구소) ;
-
구복경
(수의과학연구소)
;
- 김종염 (수의과학연구소) ;
- 김덕원 (삼양약화학) ;
-
박용호
(서울대학교 수의과대학)
;
- 한태욱 (미국 조지아대학교)
- Received : 1997.10.10
- Published : 1998.03.25
Abstract
The effects of chitosan on mastitis in lactating holstein cows were evaluated. Fifty six cows with intramammary infection(IMI) from nine farms were selected and the cows were fed with diets which contained 15~20g chitosan per day for 5~7 days. The milk samples were obtained from cows at 7 days and 14 days after administration to determine effect of the curing of mastitis and the reduction of somatic cell counts(SCC). The average value of SCC levels in quarter milk from the cows administrated with chitosan significantly decreased up to 31.8% and 47.7% at 7 and 14 days, respectively(P<0.05). The cure rates of chitosan for Stapylococcus aureus, coagulase-negative Staphylococci, Streptococci spp, other gram positive bacteria and coliforms were 30.4, 42.8, 33.3, 66.6 and 54.5 % respectively. Twenty three out of 64 cases were cured by feeding with chitosan. The results showed that administration of chitosan could reduce SCC in milk and improve cure rates of bovine mastitis caused by microorganisms. The further studies will be pursued to study on the mechanism of chitosan in the immune responses of cows with mastitis.