Table 5.

Effect of type of cow-calf contact on natural autoantibodies (N-IgA, N-IgG, and N-IgM titers) titers, and metabolite and hormone concentrations measured in the blood of calves at two different ages.

Variable	No contact				Partial contact				Full contact				F-value a	P-value a
	Day 14		Day 49		Day 14		Day 49		Day 14		Day 49
	Mean	SE	Mean	SE	Mean	SE	Mean	SE	Mean	SE	Mean	SE
N-IgG, titer	8.23	0.49	6.90	0.28	7.97	0.22	6.77	0.28	8.23	0.36	6.28	0.30	0.76	0.48
N-IgA, titer	1.51	0.31	2.29	0.60	1.53	0.21	2.05	0.36	2.07	0.38	2.02	0.22	1.83	0.17
N-IgM, titer	2.53	0.38	2.88	0.45	2.92	0.30	3.91	0.47	2.66	0.34	4.31	0.27	2.76	0.10
Cholesterol, mmol/L	1.70	0.22	2.65	0.20	1.75	0.15	2.89	0.18	1.54	0.19	2.77	0.14	0.06	0.94
Cortisol, ng/mL	1.58	0.21	2.39	0.41	2.64	0.36	1.28	0.27	3.32	0.51	3.28	0.56	4.27	0.06
Insulin, μU/mL	23.20	10.09	22.81	9.29	28.56	4.61	24.06	6.25	19.77	3.48	30.63	5.91	0.71	0.53

Ig (G, A, M): Immunoglobulin.

^aF-value and P-value for treatment effect.