A comparison of a novel time-based summary measure of dairy cow health against cumulative disease frequency

Table 5 A comparison of disease cumulative frequency measures

DISEASE (Dairy 1)	Standalone dz. events	Morbidity-based cumulative frequency^a	Removal-inclusive dz. events	Removal-inclusive cumulative frequency ^a
Calving trauma	0	0%	18	1%
Diarrhea	67	3%	72	3%
Ketosis	128	5%	130	5%
Lame (hoof only)	614	25%	638	26%
LDA	100	4%	114	5%
Mastitis	1160	47%	1219	50%
Metritis	483	20%	485	20%
Milk Fever	50	2%	52	2%
Musculoskeletal injury (leg, hip, back)	0	0%	24	1%
Pneumonia	166	7%	184	7%
Retained Placenta	194	8%	195	8%
DISEASE (Dairy 2)	Standalone dz. events	Morbidity-based cumulative frequency ^b	Removal-inclusive dz. events	Removal-inclusive cumulative frequency ^b
Calving trauma	0	0%	17	1%
Diarrhea	136	5%	137	5%
Ketosis	107	4%	107	4%
Lame (hoof only)	1210	48%	1216	48%
LDA	66	3%	68	3%
Mastitis	783	31%	801	32%
Metritis	338	13%	339	13%
Milk Fever	22	1%	22	1%
Musculoskeletal injury (leg, hip, back)	0	0%	23	1%
Pneumonia	125	5%	131	5%
Retained Placenta	215	8%	217	9%
DISEASE (Dairy 3)	Standalone dz. events	Morbidity-based cumulative frequency ^c	Removal-inclusive dz. events	Removal-inclusive cumulative frequency ^c
Calving trauma	0	0%	9	0%
Diarrhea	45	2%	47	2%
Ketosis	7	0%	9	0%
Lame (hoof only)	1178	53%	1205	54%
LDA	94	4%	95	4%
Mastitis	1025	46%	1047	47%
Metritis	421	19%	423	19%
Milk Fever	40	2%	41	2%
Musculoskeletal injury (leg, hip, back)	0	0%	77	3%
Pneumonia	63	3%	76	3%
Retained Placenta	239	11%	239	11%

^aCumulative frequency based on the number of standalone or removal-inclusive (biological culling and death) disease events divided by 2459 enrollments
^bCumulative frequency based on the number of standalone or removal-inclusive (biological culling and death) disease events divided by 2533 enrollments
^cCumulative frequency based on the number of standalone or removal-inclusive (biological culling and death) disease events divided by 2241 enrollments.

ISSN: 2046-0481