INSTITUTE OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION ___________________________________________________________________________ EFFECTS OF ANDROGRAPHIS PANICULATA (BURM. F.) NEES ON PERFORMANCE, MORTALITY AND COCCIDIOSIS IN BROILER CHICKENS Doctoral Dissertation Submitted for the degree of Doctor of Agricultural Sciences of the Faculty of Agricultural Sciences by Naiyana Tipakorn born in Nonthaburi (Thailand) ___________________________________________________________________________ GEORG-AUGUST-UNIVERSITY, GÖTTINGEN, GERMANY MAY 2002 D 7 Referee: Prof. Dr. Udo ter Meulen Co-referee : Prof. Dr. H. Böhnel Date of examinations: 16th May 2002 ACKNOWLEDGEMENTS I would like to express my most profound thanks to my advisors, Prof. Dr. Udo ter Meulen and Prof. Dr. H. Böhnel for their advice and encouraging guidance throughout the study period at Göttingen University, Germany. Grateful thanks are also extended to Prof. Dr. G. Hörstgen-Schwark for her suggestion and also to Assis. Prof. Wandee Tartrakoon, Department of Animal Science, Chiang Mai University. Sincere thanks go to Dr. Vet. Sci. Pornchai Chamnarnpood, Director of Diagnosis and Research Centre, Department of Livestock Development in Phitsanulok Province and also to Dr. Vet. Sci. Chunpen Chamnarnpood and her veterinarians staff in this office for their help and suggestions. Deep appreciation is also expressed to Mrs. G. ter Meulen for her constructive comments and suggestions. I would also like to express my sincere and heartfelt gratitude to Dr. Yenchit Techadamrongsin and Mrs. Thidaratana Boonrod, Medicinal Plant Research Institute, Department of Medical Sciences, Ministry of Public Health for their help and suggestions in analysis on chemical characteristics and conducting the thin layer chromatography (TLC). I also thank all staff members at the Faculty of Animal Science in Phichit College of Agriculture and Technology for their aid and comments during the research period in Thailand. My colleagues at the Institute of Animal Physiology and Nutrition, Göttingen University supported me in various ways. Sincere thanks in particular to Nurhayati, Idat Galih Permana and Klaus Grow. Finally, I wish to give special recognition to my husband, Pirotj Tipakorn, my son Karn and my daughter Sudjaporn and to my parents, for their patience and understanding during this task. LIST OF CONTENTS Page LIST OF CONTENTS i LIST OF TABLES vi LIST OF FIGURES viii LIST OF ABBREVIATIONS ix 1. INTRODUCTION 1 2. LITERATURE REVIEW 4 2.1. Botanical characteristics of Andrographis paniculata (AP) plant 4 2.2. Chemical composition of AP 6 2.3. Production of AP leaves 9 2.3.1. Cultivation 9 2.3.2. Harvesting 10 2.3.3. Post-harvest handling method 10 2.3.4. Packaging and storage 10 2.3.5. Yield of Andrographis paniculata 12 2.4. The use of AP as a traditional medicinal plant 12 2.5. Physiological and pharmacological properties of AP leaves 14 2.5.1. Effect of AP leaves on inflammation and fever 14 2.5.2. Effect of AP leaves on the common cold 16 2.5.3. Effect of AP leaves on diarrhea and intestinal tract 17 2.5.4. Effect of AP leaves on respiratory system 18 2.5.5. Effect of AP leaves on cardiovascular system 19 2.5.6. Effect of AP leaves on nervous system 20 2.5.7. Effect of AP leaves on liver and gall bladder protection 20 2.5.8. Effect of AP leaves on other diseases 22 2.6. Possible negative side effects of AP leaves 22 2.7. Main poultry diseases of economic importance in Thailand 24 2.7.1. Coccidiosis 25 2.7.2. Salmonellosis 29 2.7.3. Colibacillosis 31 2.7.4. Fowl cholera 33 2.8. Use of antibiotics in animal production 35 2.8.1. Use of tetracycline in animal production 35 2.8.2. Antibiotic residues in animal meat 36 2.8.3. Problems of antibiotic resistant microorganisms in animal production 37 3. EXPERIMENT 1: PHYTOCHEMICAL ANALYSIS AND QUALITATIVE DETERMINATION OF CHEMICAL COMPOUNDS OF ANDROGRAPHIS PANICULATA LEAVES 38 3.1. Objective 38 3.2. Materials and methods 38 3.2.1. Preliminary test 38 3.2.2. Confirmatory test 39 3.2.3. Determination of chemical contents 40 3.3. Results 43 3.3.1. Results of colour test 43 3.3.2. Results of confirmatory test 43 3.3.3. Results of chemical content of AP 43 3.4. Discussion 44 3.5. Conclusions 46 4. EXPERIMENT 2: ANTIBACTERIAL ACTIVITY OF ANDROGRAPHIS PANICULATA LEAF EXTRACTS 47 4.1. Objective 47 4.2. Materials and methods for experiment 2.1. 47 4.2.1. Preparation of AP leaves powder 47 4.2.2. Extraction of AP by maceration method 47 4.2.3. Preparation of disk papers with AP extract 48 4.2.4. Preparation of bacteria 48 4.2.5. Preparation of disk diffusion test with AP extract 48 4.3. Materials and methods for experiment 2.2. 49 4.4. Results 49 4.5. Discussion 51 4.6. Conclusions 53 5. EXPERIMENT 3: EFFECT OF ANDROGRAPHIS PANICULATA ON COCCIDIOSIS, BROILER PERFORMANCE AND MORTALITY 54 5.1. Objectives 54 5.2. Materials and methods 54 5.2.1. Animals and housing 54 5.2.2. Design of experiment 54 5.2.3. Feed and feeding procedure 55 5.2.4. Measurements 57 5.2.4.1. Average daily gain (ADG) 57 5.2.4.2. Feed conversion ratio (FCR) 57 5.2.4.3. Mortality rate 57 5.2.4.4. Blood clinical chemistry values 58 5.2.4.5. Lesion scoring in intestinal tract and carcass evaluation 59 5.3. Data analysis 59 5.4. Results 59 5.4.1. Average daily gain 60 5.4.2. Feed conversion ratio 61 5.4.3. Mortality rate 62 5.4.4. The lesion scoring 63 5.4.5. Blood clinical chemistry values 64 5.4.6. Carcass characteristics 65 5.5. Discussion 65 5.6. Conclusions 67 6. EXPERIMENT 4: EFFECT OF ANDROGRAPHIS PANICULATA ON BROILER PERFORMANCE AND MORTALITY COMPARED WITH CHLORTETRACYCLINE 68 6.1. Objectives 68 6.2. Materials and methods 68 6.2.1. Animals and housing 68 6.2.2. Design of experiment 68 6.2.3. Feed and feeding procedure 69 6.2.4. Measurements 69 6.2.4.1. Average daily gain (ADG) 69 6.2.4.2. Feed conversion ratio (FCR) 70 6.2.4.3. Mortality rate 70 6.2.4.4. Blood clinical chemistry values 70 6.2.4.5. Microbiological findings in inner organs and carcass evaluation 70 6.3. Data analysis 71 6.4. Results 71 6.4.1. Average daily gain 71 6.4.2. Feed conversion ratio 72 6.4.3. Mortality rate 73 6.4.4. Blood clinical chemistry values 73 6.4.5. Carcass characteristics 74 6.4.6. Microbiological findings in inner organs 75 6.5. Discussion 77 6.6. Conclusions 78 7. GENERAL DISCUSSION AND RECOMMENDATIONS FOR FUTURE WORK 79 7.1. General discussion 79 7.2. Recommendations for future work 81 8. CONCLUSIONS 83 9. SUMMARY 84 10. REFERENCES 87 11. APPENDIX 99 LIST OF TABLES Page Table 2.1. Medicinal plants of the family ACANTHACEAE that have been collected in Parkchong Research Station Garden in Thailand and their traditional use 5 Table 2.2. Percent total diterpene lactones in AP after harvesting at different growth periods 10 Table 2.3. Percent total diterpene lactones in the aerial part of AP after different periods of storage 11 Table 2.4. Promoted and general used coccidiostats in Thailand 29 Table 3.1. Thin layer chromatography of AP 44 Table 3.2. Quality of AP leaves sample compared with standard quality requirements of Thai Herbal Medicine (THM) 45 Table 4.1. Susceptibility results of agar diffusion test with different AP extracts in more concentrations for different diarrhea bacteria 50 Table 4.2. Susceptibility results of agar diffusion test with different AP extracts for different diarrhea bacteria 51 Table 5.1. Feed composition of broiler feed in the experiment 56 Table 5.2. Feed ingredients in diet of starter phase (0-3 weeks), finisher phase (4-6 weeks) in dry matter basis 56 Table 5.3. Average daily gain (ADG) of broilers fed diets with varying levels of Andrographis paniculata leaf meal supplement after infection with coccidiosis 61 Table 5.4. Feed conversion ratio (FCR) of broilers fed diets with varying levels of Andrographis paniculata leaf meal supplement after infection with coccidiosis 62 Table 5.5. The mortality rates of broilers fed diets with varying levels of Andrographis paniculata leaf meal supplement after infection with coccidiosis 62 Table 5.6. The lesion scoring on intestines of broilers fed diets with varying levels of Andrographis paniculata leaf meal supplement after infection with coccidiosis 63 Table 5.7. Results of blood clinical chemistry analyses of broilers fed diets with varying levels of Andrographis paniculata leaf meal supplement after infection with coccidiosis 64 Table 5.8. Carcass characteristics of broilers fed diets with varying levels of Andrographis paniculata leaf meal supplement after infection with coccidiosis 65 Table 6.1. Average daily gain (ADG) of broilers fed diets with varying levels of Andrographis paniculata leaf meal or chlortetracycline additive 71 Table 6.2. Feed conversion ratio (FCR) of broilers fed diets with varying levels of Andrographis paniculata leaf meal or chlortetracycline additive 72 Table 6.3. Mortality rates of broilers fed diets with varying levels of Andrographis paniculata leaf meal or chlortetracycline additive 73 Table 6.4. Effect of AP or chlortetracycline on blood clinical chemistry values of glucose, total protein, albumin and globulin levels in serum 74 Table 6.5. Carcass characteristics of broilers fed diets with varying levels of Andrographis paniculata leaf meal or chlortetracycline additive 75 Table 6.6. Microbiological findings in inner organs of broilers fed diets with varying levels of Andrographis paniculata leaf meal or chlortetracycline additive 76
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