Minecraft wiki entry for Animal_farming, associated text: 1 Basic farming
1.1 Cow crusher
1.2 Breeding tips
2 Automated animal farming
2.1 Simple and Easy Cooked Meat Farm
2.1.1 Function
2.1.2 Construction
2.1.3 Preparation
2.1.4 Usage
2.2 Fully Automatic Chicken Cooker
2.3 Poor Man's Beef Farm
2.4 Steakatron 2000
2.4.1 Construction
2.4.2 Preparation
2.4.3 Usage
2.5 Cruddly's Porkatron 3000
2.5.1 Construction
2.5.2 Preparation
2.5.3 Usage
2.5.4 Modification Notes
2.6 Falling Auto-spawn trap
3 Semi-automated farming
3.1 Sheep farm