Title Page
Contents
Abstract 7
Chapter 1. Introduction 9
Chapter 2. Materials and methods 11
2.1. Animal care 11
2.2. Experiment. 1. Nutrient digestibility and hindgut disappearance 11
2.2.1. Animals, diets, and experimental design 11
2.2.2. Feeding and sample collection 12
2.2.3. Chemical analyses 12
2.2.4. Calculations 13
2.2.5. Statistical analyses 14
2.3. Experiment. 2. Growth performance 14
2.3.1. Animals, diets, and experimental design 14
2.3.2. Feeding and measurements 15
2.3.3. Statistical analyses 15
Chapter 3. Results 17
3.1. Experiment. 1. Nutrient digestibility and hindgut disappearance 17
3.2. Experiment. 2. Growth performance 17
Chapter 4. Discussion 18
Chapter 5. Conclusion 24
References 34
Appendix 41
Abstract (in Korean) 43
Table 1. Ingredient and nutrient composition of experimental diets, as-fed basis 25
Table 2. Analyzed nutrient composition of experimental diets 27
Table 3. Dose-dependent effects of supplemental phytase on apparent ileal (AID), total tract digestibility (ATTD), and apparent hindgut disappearance (AHD) of nutrients and standardized ileal (SID), total tract digestibility (STTD), and standardized hindgut disappearance... 29
Table 4. Dose-dependent effects of supplemental phytase on apparent ileal digestibility of amino acids of growing pigs (Experiment. 1) 31
Table 5. Dose-dependent effects of supplemental phytase on growth performance of growing pigs (Experiment. 2) 33