erysipelas: An infectious disease mainly affecting pigs and also turkeys. In pigs, the symptoms are reddish inflammations on the skin and a high fever. It may cause infertility or abortion and manifests itself in three forms: acute, sub-acute, and chronic. Also called Diamonds disease. Managing erysipelas is crucial for farmers to ensure the health and productivity of their livestock.
exceed: To be more than expected, needed, or allowed. The concentration of radioactive material in the waste exceeded the government limits. It is dangerous to exceed the stated application rate; do not apply more than the recommended amount. Understanding limits helps farmers comply with regulations and ensure safe practices.
excretion rate: The rate at which a substance such as nitrogen is excreted by an animal. Understanding excretion rates helps farmers manage livestock nutrition and waste.
extraction rate: The percentage of flour produced as a result of milling grain. Understanding extraction rates helps farmers optimize processing and improve product quality.
etiolation: The process by which a green plant grown in insufficient light becomes yellow and grows long shoots. Understanding etiolation helps farmers manage plant health and optimize growth conditions.
ecologically sustainable development: Development which limits the size of the human population and the use of resources, so as to protect the existing natural resources for future generations. This principle helps farmers plan for long-term sustainability and resource conservation.
estimated breeding value: The value of an animal, calculated using an estimate of how many offspring it will have and what they will be worth. Abbr EBV. Knowing EBV helps farmers select and breed livestock for desirable traits, improving herd quality and productivity.
ectoparasite disease: A disease caused by lice and other insects, usually characterized by intense irritation. Farmers need to manage ectoparasite diseases to ensure the health and welfare of their livestock.
emission standard: The amount of an effluent or pollutant that can legally be released into the environment, e.g., the amount of sewage which can be discharged into a river or the sea, or the amount of carbon monoxide that can legally be released into the atmosphere by petrol and diesel engines. Complying with emission standards helps farmers reduce pollution and avoid legal penalties.
encephalopathy: BSE. Managing encephalopathy is crucial for farmers to prevent the spread of diseases and maintain animal health.