http://www.dec.ny.gov/animals/7197.htmlWhy did DEC place restrictions on deer feeding?
The rule was issued in response to the threat of Chronic Wasting Disease (CWD) being introduced into New York. The nature of CWD requires prompt and extraordinary actions to address the threat posed by this disease. The purpose of this rule is to prevent the introduction of this disease into New York, to restrict those activities that may increase the risk of the development or spread of CWD in New York and to protect the health of wild white-tailed deer (Odocoileus virginianus) in New York.
Feeding deer artificially concentrates them in one location for extended periods of time. CWD is most likely transmitted from deer to deer by direct contact between animals, or indirectly through contact with waste food, urine, and feces that build up at feeding sites, although the exact transmittal mechanism is currently unknown. Although CWD has not been found in New York, this measure is a precaution to help prevent the spread of CWD if it already exists in the state, or if it is introduced later. The incubation period for CWD can be three years or longer, and an outbreak among white-tailed deer at feeding sites could spread the disease before clinically-ill individuals are observed. This would greatly hamper efforts to control the disease. Other diseases, such as Bovine Tuberculosis, can also be spread quickly at feeding sites, where animals are in close contact with each other and with waste products every day.
Another risk associated with deer feeding is the possibility that the infectious agent of CWD could be present in commercial feeds. Some commercial livestock feed may be produced using rendered animal parts, which could contain the infectious agent. If the agent is present in these foods it could infect any deer that eats the food. Federal regulations in effect since 1997 require feeds containing mammalian protein to be labeled to prohibit them from being fed to any ruminants, including deer and elk. The DEC regulation mirrors this restriction to call attention to the special risk associated with misuse of feeds not intended for ruminants.