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20043
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Subject: Poultry Science × End date: 2004 × Type: Thesis ×
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    ThesisItemOpen Access
    Effect of dietary supplementation of herbal liver stimulant on the performance of commercial broilers
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2004-06) Bisht, Kavita; Singh, S.K.
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    ThesisItemOpen Access
    Effect of Thermal Humidity Index (THI) on growth performances and immunocompetence in turkey and guinea fowl
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2004-07) Elizabeth Yhome, K.; Atheya, U.K.
    Turkey and Guinea fowl, apart from being an important germplasm resume for America and African country respectively, is being looked as a potential protein for developing and under developing countries and India is having a great scope in this context. In the present study experiments were undertaken with five groups each of Turkeys and Guinea fowl comprising of 5 and 20 birds respectively were taken to assess the effect of hot-humid and hot-dry seasons on their growth rate, fertility, hatchability, mortality, haematological parameter, immunity and endocrine function. Temperature and relative humidity of the environment outside and inside the bird houses were recorded separately in both seasons and THI was calculated. Environmental THI during hot dry ranged between 60-79 and during hot humid ranged between 74-84 and THI inside the bird‘s houses ranged between 59-93. There was no significant effect on growth rate when THI was in the range of 61-71, the Turkey and Guinea fowl were quite comfortable, but when THI went above 83, it show signs of stress and bird‘s begin to pant out. Fertility and hatchability show significant (P<0.05) variation probably due to seasonal breeding pattern, age of bird, photoperiod etc. There were slight changes in haematological parameters in both seasons; changes observed may be due to age, sex and nutritional status. Antibody titre was significantly higher (P<0.05) in both Turkey and Guinea fowl except during May and June. Triiodothyronine (T3) and Thyroxine (T4) estimation were performed in hot-dry season in Turkey and Guinea fowl and no significant differences was observed except that morning T3 and T4 were significantly higher then afternoon T3 and T4. From the above study as conclusion it can be inferred that rearing Turkey and Guinea fowl would be economical at farmers level, but more, studies need to be conducted during the hot humid season especially May – June and various measures of amelioration of heat stress need to be practiced during the hotter climates of Tarai and Tarai like regions.
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    ThesisItemOpen Access
    Prophylaxis against salmonellosis through Salmonella toxoid vaccine and competitive exclusion
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2004-08) Gammi, Taking; Ashok Kumar
    The present investigation was conducted to evaluate the immunoprophylaxis efficacy of Salmonella toxoid vaccine by the various routes of administration- subcutaneously and orally to individual chick and orally through drinking water to chicks ageing 21 days by dividing into four groups. The blood sera were assessed upto 90th DPV by ELISA test, also challenge test were conducted by dividing the four groups into eight subgroups and challenged with S. Weltevreden and S.Gallinarum @ 4 x 109 c.f.u. The clinical symptoms with mortality pattern were studied upto 30th DPC and the liver, caeca and spleen samples were collected from the birds died of challenge infection and the sacrificed survivor for bacteriological examination. The maximum humoral antibody titres were obtained from the subcutaneously vaccinated birds and the 90-100% protection were afforded by the vaccine. The mortality pattern of vaccinated and control birds were also studied and compared. The passive transfer of maternal antibodies were assessed by detecting the saline extraction of antibodies in the egg yolk which obtained a high antibody titres. Also protective efficacy of maternal antibodies were evaluated by the challenge test which obtained a 90-100% protection. The cross-protection against E.coli was evaluated by challenging the four groups of birds by the commonly occurring E.coli serovars 0-78 @ 4 x 109 c.f.u intraperitoneally on 21st DPC, which obtained a 83.33% protection. The protective efficacy of one year old vaccine were evaluated by ELISA test, AGPT and challenge test. The equal antibody titres of freshly prepared vaccine were obtained from the sera collected on 21st DPV and precipitation line was obtained in between the serum of vaccinated birds and antigen, also 90-100% protection were afforded by the vaccine. The prophylaxis against salmonellosis by the competitive exclusion (probiotic) was studied and obtained a improvement of growth rate, gained in body weight by the probiotic feed chicks of day old upto a Av. Wt. gain of 5gm/chick. Also, gave cross-immunity and powerful degree of competitive exclusion between two or more serovar were obtained.