Abstract #139

# 139
Management of nonambulatory dairy cows on US dairy operations.
Ashley E. Adams*1,2, Jason E. Lombard2, Ivette N. Roman-Muniz1, Charles P. Fossler2, Christine A. Kopral2, 1Colorado State University, Fort Collins, CO, 2USDA:APHIS:VS:Center for Epidemiology and Animal Health, Fort Collins, CO.

The objective of this study was to describe practices used on US dairy operations for the management and care of nonambulatory dairy cattle. This study was conducted as part of the National Animal Health Monitoring System’s Dairy 2014 study, which included dairy operations in 17 states. Information on the management of nonambulatory dairy cows was collected on 1,261 dairy operations via in-person interviews. For the purpose of this study, nonambulatory cows were defined as those unable to stand at any time during a period of at least 24 h. The majority of operations (76.5%) had at least one nonambulatory cow in 2013, with an average of 2.6% of US dairy cows becoming nonambulatory during the year. Less than a quarter of all operations (22.6%) had written guidelines for handling nonambulatory cattle: 57.1% of large dairies (≥500 cows) had written guidelines, compared with just 24.1% of medium dairies (100–499 cows), and 15.5% of small dairies (30–99 cows). After becoming nonambulatory, cows were offered water within 1 h on 62.6% of operations, within 4 h on 83.0%, and within 12 h on 92.6% of operations; 2.6% of operations did not offer nonambulatory cows water. Food was offered to nonambulatory cows within 1 h on 60.6% of operations, within 4 h on 81.3%, and within 12 h on 91.6% of operations; 3.4% of operations did not offer food to nonambulatory cows. Cows were offered shelter within 1 h after becoming nonambulatory on 65.5% of operations, within 4 h on 80.1%, and within 12 h on 84.9% of operations; 9.1% of operations did not offer shelter to nonambulatory cows. Of nonambulatory cows, 30.0% recovered, 49.7% were euthanized, and 17.7% died. Of those that were euthanized, 59.1% were euthanized within 2 d of being recognized as nonambulatory. With 17.7% of nonambulatory cattle dying, and 41.9% being nonambulatory for 2 d or more before being euthanized, an opportunity exists for dairy producers to improve in this area. Implementing written guidelines, including the identification of cows that qualify for humane euthanasia, may help ensure the welfare of nonambulatory dairy cattle.

Key Words: dairy cattle, nonambulatory, management practices