Effect of cassava in poultry feed on immunological system of broiler | เธเธฅเธเธญเธเธเธฒเธฃเนเธเนเธกเธฑเธเธชเธณเธเธฐเธซเธฅเธฑเธเนเธเธชเธนเธเธฃเธญเธฒเธซเธฒเธฃเธเนเธญเธฃเธฐเธเธเธ เธนเธกเธดเธเธธเนเธกเธเธฑเธเนเธเนเธเนเธเธฃเธฐเธเธ
2007
Sarassanan Sawangkham(Kasetsart University. Kamphaeng Saen Campus, Nakhon Pathom (Thailand). Faculty of Agriculture. Department of Animal Science) | Uthai Kanto(Kasetsart University. Kamphaeng Saen Campus, Nakhon Pathom (Thailand). Faculty of Agriculture. Department of Animal Science) | Chanin Tirawattanawanich(Kasetsart University. Bangkhen Campus, Bangkok (Thailand). Faculty of Veterinary Medicine. Department of Physiology.) | Sukanya Juttupornpong(Kasetsart University. Kamphaengsaen, Nakhon Pathom (Thailand). Suwanvajokkasikit Animal Research and Development Institute. Animal Nutrition Research and Development Center)
Effect of cassava as basal feed ingredient on immunological system of broiler was studied. A total of 480 day-old chicks were divided into 4 groups (12 replications with 10 broiler chicks in each) and were randomly assigned into 4 dietary treatment combinations composed of source of energy feed ingredients, corn or cassava and feed form, mashed or pellets by utilizing 2*2 factorial in randomized complete block experimental design. Results of the study have shown that chickens on cassava diet have significantly (P LT 0.05) higher number of macrophages for phagocytosis activity of both opsonized and unopsonized SRBC than those on corn diet. Animals on pelleted diet have significantly higher (P LT 0.05) number of macrophages for unopsonized SRBC than those on mashed diet. Broliers on cassava diet have significantly higher (P LT 0.05) proliferation of T-lymphocyte on day 3 and 7 after the antigen injection than those on corn diet. Chickens on pelleted diet have siginificantly higher (p LT 0.05) proliferation of T-lymphocyte than those on masheddiet. The effect of either source of energy feed ingradients or feed form on blood antibody level of the animals at every experiment period were found non-significantly. This study had shown that cassava can stimulate non specific immunity and cellular immunity. Latobacillus spp. naturally in cassava may be responsible for the increases of proliferation of T-lymphocyte and phagocytosis activity of macrophage.
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