Table 15.

Categorical fecal results and morbidity and mortality factors for preweaned dairy calves (n = 2,545) on 104 US operations from March 2014 to September 2015

Variable	Level	Operations1		Heifer calves
		Number	Percent	Number	Percent
Fecal testing	Positive for Cryptosporidium	98	94.2	1,000	43.0
	Negative for Cryptosporidium	6	5.8	1,323	57.0
	Positive for Giardia	103	99.0	707	30.4
	Negative for Giardia	1	1.0	1,615	69.5
	Positive for Cryptosporidium and Giardia	88	84.6	308	13.3
	Negative for Cryptosporidium and Giardia	0	0.0	923	39.7
	Not tested	0		222
Morbidity and treatment	Digestive signs	78	78.0	483	21.4
	Respiratory signs	63	63.0	287	12.7
	Any illness	88	88.0	859	38.1
	No illness	12	12.0	1,398	61.9
	Not reported	4		288
	Received treatment	83	79.8	826	32.5
Mortality	Digestive signs	27	26.0	41	1.6
	Respiratory signs	18	17.3	18	0.7
	Other	13	12.5	26	1.0
	Unknown	58	55.8	32	1.3
	Not reported	7	6.7	11
	Any cause of death	37	35.6	128	5.0

¹Operation percentages were calculated by dividing the variable level by the total number of operations reported for each variable. Operations may have had calves in more than one variable level; therefore, the sum of a variable might not always equal 100%.