Here you will find more about bio-dynamics - I buy chicken, lamb and beef which arte all BD in a farm in East Sussex. Kids love going there too.... Their pigs are organic "only".
Here is a bit from that website:
How is biodynamic different from organic?
Every biodynamic farm aims to become self-sufficient in compost, manures and animal feeds.
All external inputs are kept to a minimum.
Compost is treated with special herb-based preparations.
Crop quality is improved using natural manure and quartz based preparations.
Ecological diversity is a goal of landscape management.
An astronomical calendar is used to determine auspicious, planting, cultivating and harvesting times.
Is biodynamic food better for you?
Food produced from healthy soil and contented animals will make for healthy people.
Research shows that biodynamic produce:
keeps fresh for longer
flavour is better
dry matter content is higher
nitrate content is lower
has greater vitality
There is also considerable anecdotal evidence to show that eating biodynamic food increases vitality, reduces allergic reactions and brings about an all round health improvement.
How much research been done?
A large amount of research has been undertaken over the last eighty years including: Long term comparisons between biodynamic, organic and conventional farming systems, the efficacy of the biodynamic preparations, research into food quality and much more.