Genetic evaluation of mastitis liability and recovery through longitudinal analysis of transition probabilities

Table 3 Average correlations between estimated breeding values in the HD and DH direction

Daughters/sire		60		150
Mastitis frequency (cases/lactation)		0.28 Scenario 1	0.95 Scenario 2	0.28 Scenario 1	0.95 Scenario 2
r_G = 0	B(τ) = 10 × L(τ)	0.048 (0.027)	0.060 (0.025)	0.020 (0.018)	0.003 (0.019)
	B(τ) = 15 × L(τ)	0.074 (0.010)	0.172 (0.025)	0.066 (0.017)	0.134 (0.016)
r_G = 0.2	B(τ) = 10 × L(τ)	0.125 (0.092)	0.115 (0.005)	0.056 (0.021)	0.134 (0.032)
	B(τ) = 15 × L(τ)	0.113 (0.026)	0.167 (0.024)	0.114 (0.019)	0.270 (0.031)
r_G = -0.2	B(τ) = 10 × L(τ)	-0.005 (0.008)	-0.003 (0.026)	-0.074 (0.030)	-0.068 (0.042)
	B(τ) = 15 × L(τ)	0.046 (0.004)	0.079 (0.016)	-0.037 (0.022)	0.041 (0.047)

Correlations (in bold) between estimated breeding values in the healthy to diseased direction and the diseased to healthy direction for different combinations of genetic correlation (r_G), daughters per sire, mastitis frequency, and boundary level (B(τ)). Reported values in the table are the mean and standard errors (within parentheses) based on five replicates

ISSN: 1297-9686