ผลของไคโตแซนและเลวามิโซลต่อการเจริญเติบโตและภูมิคุ้มกันของปลานิล (Oreochromis niloticus) ที่เลี้ยงในกระชังบ่อดิน

Main Article Content

นพดล ศุกระกาญจน์
กฤษณะ เรืองคล้าย
พันธสิทธิ์ โชคสวัสดิกร

Abstract

Abstract


This experiment aimed to study the effects of dietary supplementation of chitosan and levamisole on the growth performance, non-specific immune responses and disease resistance of Nile tilapia in earthen-pond cage culture. Fish were divided into 4 groups before being fed for 12 weeks with unsupplemented commercial diet as the control, 1% of chitosan, 250 mg/kg feed of levamisole and 1 % chitosan plus 250 mg/kg feed of levamisole. Results showed dietary supplementation of chitosan and levamisole enhanced the growth with better feed conversion ratio of all treated fish significantly. Lysozyme and complement activity were significantly enhanced in fish fed with 1 % of chitosan, 250 mg/kg levamisole and 1% chitosan plus 250 mg/kg diet, in correlation with higher survival rate of experimental fish challenged with Streptococcus agalactiae, compared to the control. These results suggest that administration of 1 % chitosan or 250 mg/kg feed of levamisole in the diet can enhance growth performance and improve resistance of Nile tilapia to Streptococcus agalactiae


Keywords: chitosan; levamisole; growth performance; immune response; Nile tilapia

Article Details

Section
Biological Sciences
Author Biographies

นพดล ศุกระกาญจน์

สาขาวิชาวิทยาศาสตร์ชีวภาพและสิ่งแวดล้อม คณะวิทยาศาสตร์ มหาวิทยาลัยทักษิณ วิทยาเขตพัทลุง ตำบลบ้านพร้าว อำเภอป่าพะยอม จังหวัดพัทลุง 93210

กฤษณะ เรืองคล้าย

สาขาวิชาวิทยาศาสตร์ชีวภาพและสิ่งแวดล้อม คณะวิทยาศาสตร์ มหาวิทยาลัยทักษิณ วิทยาเขตพัทลุง ตำบลบ้านพร้าว อำเภอป่าพะยอม จังหวัดพัทลุง 93210

พันธสิทธิ์ โชคสวัสดิกร

สาขาวิชาวิทยาศาสตร์ชีวภาพและสิ่งแวดล้อม คณะวิทยาศาสตร์ มหาวิทยาลัยทักษิณ วิทยาเขตพัทลุง ตำบลบ้านพร้าว อำเภอป่าพะยอม จังหวัดพัทลุง 93210

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