Table 6.
Serovar | No. of Salmonella from environment
|
% Salmonella by sample1 | % Salmonella by farm2 | |
---|---|---|---|---|
Pen floor3 | Nipple4 | |||
IP5 (n = 25) | 25 | — | 41 (25/61) | 83 (5/6) |
Cerro | 23 | — | 38 (23/61) | 66 (4/6) |
Liverpool | 2 | — | 3 (2/61) | 16 (1/6) |
GP6 (n = 19) | 15 | 4 | 31 (19/61) | 33 (2/6) |
Cerro | 7 | 4 | 18 (11/61) | 33 (2/6) |
Newport | 8 | 0 | 13 (8/61) | 16 (1/6) |
Percent of environmental samples culture positive for Salmonella.
Percent of farms with at least one environmental sample culture positive for the specified Salmonella serovar.
Salmonella isolates cultured from environmental samples of calf housing pen floors. A maximum of 1 isolate was cultured per sample.
Salmonella isolates cultured from environmental samples of nipples used for ad libitum feeding of GP calves.
IP = calves housed in individual pens without direct contact with neighboring calves and fed milk or milk replacer 2 to 3 times a day.
GP = calves housed in group pens with 3 to 25 calves being fed free-choice acidified milk.