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Introduction of phytol
1£®Physical-chemical property ofphytol
2£®Effects of phytol on mice
3£®Effects of phytol on finishing pigs
4£®Effects of phytol and its metabolites

Chapter 1 General introduction
1£®1 General background
1£®2 Photosynthetic pigments and phytol in herbages
1£®3 Decomposition pathways of chlorophyll
1£®4 Functional compounds in ruminant products
1£®5 Objectives

Chapter 2 Changes of photosynthetic pigments and phytol inherbages
2£®1 Changes of photosynthetic pigments and phytol content at different fertilization levels in fresh herbage and hay
2£®2 Changes in carotenoid£¬ chlorophyll and phytol contents in Italian ryegrass during ensiling
2£®3 Effects of nitrogen fertilization and harvesting stage on photosynthetic pigments and phytol contents of Italian ryegrass silage
2£®4 Effects of lactic acid bacteria addition on photosynthetic pigments of ensiled Italian ryegrass grown under different nitrogen fertilization levels
2£®5 Changes of chlorophyll and phytol contents in different harvesting height King grass before and after ensiling

Chapter 3 Phytanic aicd production in the rumen
3£®1 Effects of fertilization levels and harvesting stages of fresh herbages on ruminal phytanic acid production in vitro
3£®2 Effects of fertilization levels and harvesting stages of Italianryegrass silages on ruminal phytanic acid production in vitro

Chapter 4 Effect of forages sources on phytanic acid content in milk of dairy cows
4£®1 Introduction
4£®2 Materials and methods
4£®3 Results
4£®4 Discussion

Chapter 5 General discussion
5£®1 Factors for the changes of photosynthetic pigments andphytol in herbages
5£®2 Factors for the changes of phytanic acid in the rumen
5£®3 Factors on the changes of phytanic acid content in milk
5£®4 Conclusion
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Chapter 6 General summary

References
Abbreviations