Animal genetic resources for food and agriculture crop and livestock species in the early neolithic time period changed our human evolution and lifestyles. This ability to control food production led to major demographic, technological, political and military changes. Consecutively, thousands of years of natural and human selection, genetic drift, inbreeding, and crossbreeding have contributed to the diversification of animal genetic resources and increased the variety of environments and production systems that livestock keeping takes place. Relatively few species have been domesticated; out of the world's 148 non-carnivorous species weighing more than 45 kg, only 15 have been successfully domesticated. The proportion of domesticated birds used for food
Ileo-anal pouch and discomforts as their body compensates for the loss of such an important organ. Many patients experience the inability to sleep through the night, a drastically changed diet, severe and frequent gas pain, nutrient deficiencies, and the inability to digest certain foods. In some cases where the pouch was formed to manage colitis, inflammation can return to the pouch in a similar way to the original inflammation in the colon. This is known as pouchitis. The surgical procedure for forming an ileo-anal pouch (jpouch) was pioneered by Sir Alan Parks at St. Mark's Hospital in London in the mid to