The genetics of resilience and its relationships with egg production traits and antibody traits in chickens

Berghof, Tom V. L.; Bedere, Nicolas; Peeters, Katrijn; Poppe, Marieke; Visscher, Jeroen; Mulder, Han A.

doi:10.1186/s12711-024-00888-5

Genetics Selection Evolution

Table 1 Descriptive statistics^a for each trait

From: The genetics of resilience and its relationships with egg production traits and antibody traits in chickens

Trait		Period (weeks of age)	Interval	White	Brown
Average batch production	ln(variance)	25 to 83	1 week	− 0.81 (0.94) 31,925	− 0.33 (1.09) 1462
			2 weeks	0.06 (1.01) 31,812	0.66 (1.23) 31,381
			3 weeks	0.50 (1.07) 31,707	1.21 (1.30) 31,279
		83 to end	1 week	− 0.33 (1.10) 29,979	− 0.26 (1.26) 26,760
			2 weeks	0.47 (1.22) 29,660	0.65 (1.39) 19,317
			3 weeks	0.85 (1.35) 25,196	1.42 (1.36) 2934
	Skewness	25 to 83	1 week	− 1.50 (1.04) 31,919	− 1.19 (1.15) 31,502
			2 weeks	− 0.97 (1.02) 31,867	− 0.79 (1.11) 31,415
			3 weeks	− 0.66 (0.91) 31,751	− 0.55 (1.02) 31,304
		83 to end	1 week	− 0.63 (0.71) 29,952	− 0.32 (0.69) 26,747
			2 weeks	− 0.29 (0.56) 29,662	− 0.16 (0.51) 19,317
			3 weeks	− 0.14 (0.46) 25,240	− 0.09 (0.46) 2951
	Autocorrelation	25 to 83	1 week	0.21 (0.24) 31,994	0.36 (0.29) 31,524
			2 weeks	0.14 (0.29) 31,877	0.36 (0.29) 31,414
			3 weeks	0.11 (0.30) 31,761	0.33 (0.30) 31,304
		83 to end	1 week	0.12 (0.31) 29,992	0.13 (0.35) 26,760
			2 weeks	0.01 (0.32) 29,662	− 0.01 (0.34) 19,317
			3 weeks	− 0.09 (0.31) 25,240	− 0.01 (0.32) 2951
Individual production	ln(variance)	25 to 83	1 week	− 0.61 (1.09) 31,816	− 0.63 (1.12) 31,381
	ln(variance)	83 to end	1 week	− 0.36 (1.06) 29,693	− 0.26 (1.33) 26,478
	Skewness	25 to 83	1 week	− 2.59 (1.12) 31,782	− 2.01 (1.19) 31,264
	Skewness	83 to end	1 week	− 0.84 (0.76) 29,711	− 0.46 (0.70) 26,594
	Autocorrelation	25 to 83	1 week	0.23 (0.21) 31,839	0.22 (0.28) 31,457
	Autocorrelation	83 to end	1 week	0.07 (0.29) 29,723	0.10 (0.34) 26,641
Egg production (number)		Full		486.0 (84.7) 32,056	427.4 (95.9) 31,603
		Early		29.2 (8.7) 32,056	37.4 (7.9) 31,603
		25 to 83		369.3 (57.1) 32,056	345.8 (73.0) 31,603
		83 to end		92.5 (31.7) 30,339	51.3 (26.0) 27,159
Natural antibodies (titers)	IgM	Once between 15 and 22		7.10 (1.43) 4856^b	6.74 (1.20) 2789^c
Natural antibodies (titers)	IgG	Once between 15 and 22		6.16 (1.57) 4852^d	6.02 (1.29) 2789^c

^aAverage, standard deviation (in parentheses), and number of observations used (in italics) for each trait: resilience indicators based on average batch production, resilience indicators based on expected individual production, egg production for each life period, and keyhole limpet hemocyanin (KLH)-binding natural antibody for White and Brown
^bConsisting of 3100 females and 1756 males
^cConsisting of 2509 females and 280 males
^dConsisting of 3096 females and 1756 males

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ISSN: 1297-9686

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