Please use this identifier to cite or link to this item: http://krishikosh.egranth.ac.in/handle/1/5810145356
Authors: K. PREETHA
Advisor: G. GIRISH VARMA
Title: DIETARY SUPPLEMENTATION OF SPIRULINA PLATENSIS ON GROWTH AND IMMUNE RESPONSE OF BROILER CHICKEN
Publisher: COLLEGE OF VETERINARY AND ANIMAL SCIENCES-MANNUTHY,THRISSUR
Language: en
Type: Thesis
Pages: 79
Agrotags: null
Keywords: DIETARY SUPPLEMENTATION OF SPIRULINA PLATENSIS ON GROWTH AND IMMUNE RESPONSE OF BROILER CHICKEN
Abstract: The present experiment was aimed at investigating growth promoting and immunomodulating effects of Spirulina platensis in broiler chicken. Thirty two numbers of day-old broiler (Vencob strain) chicks were procured and reared in battery cages under standard management conditions up to sixth week of age. The birds were randomly divided into four groups, viz. GI, GII, GUI and GIV, having eight birds in each group. Birds in groups GI (control) were fed with standard broiler starter ration (from first to fourth week) and standard finisher ration (from fifth to sixth week). The experimental groups GII, GUI and GIV were fed with standard rations supplemented with Spirulina platensis at the rate of 0.50 per cent, 1.50 per cent and 3.00 per cent, respectively. Both control and experimental rations were made isocaloric and isonitrogenous. Birds were provided with ad libitum feed and clean drinking water throughout the experiment. Bodyweight of individual birds were recorded on day one, eight, 15, 22, 29, 36 and 43. Blood was collected at fourth, fifth and sixth week of age and whole blood/plasma was used for further estimations. Estimation of total erythrocyte count (TEC), blood haemoglobin concentration (Hb), volume of packed red cells (VPRC), total leukocyte count (TEC), differential leukocyte count (DEC), and blood glucose was made using whole blood samples. Blood plasma was utilised for estimation of concentrations of total protein, albumin, globulin, total lipid, total cholesterol, triglyceride, HDL cholesterol, LDL cholesterol, and VLDL cholesterol. Erythrocytic indices (MCV, MCH and MCHC), heterophil: lymphocyte (H:L) ratio and albumin; globulin (A:G) ratio were calculated from the respective values. The data was analysed by Split plot analysis (Split on time) as suggested by Rangaswamy (1995). Bodyweight of Spirulina-fed birds (GII, GUI and GIV) were significantly (P<0.01) higher than that of control group throughout the experiment in an age and dose dependent way. Significant (P<0.01) age and dose dependent increase in TEC, Hb, VPRC, MCH and MCHC and decrease in MCV values were observed in Spirulina-fed groups, suggesting strong erythropoietic effect of Spirulina. Significant (P<0.01) age and dose dependent increase in total leukocyte and lymphocyte counts and decrease in heterophil, eosinophil, and monocyte counts were noticed in Spirulina-fed groups. Total leukocyte count was higher in Spirulina-fed birds, but without increase in heterophil count, ruling out the possibility of inflammatory responses. Additionally, reduced stress and more vigilant humoral immunity could be the implication. Also, Spirulina induced significantly (P< 0.01) more plasma albumin and plasma globulin, and thus, total plasma protein output in the recipients. Since the albumin: globulin (A:G) ratio did not change significantly, both these classes of proteins were equally promoted. This would mean a general boost up in plasma protein output by the liver as well as more immunoglobulin production by the lymphocytes. Increased number of lymphocytes in Spirulina-fed birds could be attributed to the higher plane of globulins in this experiment. Plasma lipid profile showed age and dose dependent lowering of total lipid, cholesterol, triglyceride, LDL and VLDL cholesterol in Spirulina-fed groups compared to control group, indicating that Spirulina would reduce lipid level, especially the 'undesirable' fractions, signifying the hypolipidaemic / lipolytic activity of the alga. The significant (P<0.01) hypoglycaemic effect of Spirulina supplementation in the present study may indicate an anti-diabetic effect, which may indicate, in turn, propensity to have more lean meat than fatty meat in the subjects. The growth-promoting and erythropoietic effects of Spirulina platensis in broiler chicken may indicate its effectiveness as a nutritional supplement, while the hypolipidaemic and hypoglycaemic effects may imply better consumer safety and desirability to the broiler meat, which intum, can potentially fetch premium price to the produce in the market.
Subject: Veterinary Physiology
Theme: DIETARY SUPPLEMENTATION OF SPIRULINA PLATENSIS ON GROWTH AND IMMUNE RESPONSE OF BROILER CHICKEN
Research Problem: DIETARY SUPPLEMENTATION OF SPIRULINA PLATENSIS ON GROWTH AND IMMUNE RESPONSE OF BROILER CHICKEN
These Type: M.V.Sc.
Issue Date: 2008
Appears in Collections:Thesis

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