猪一般恢复力性状遗传参数估计

doi:10.11843/j.issn.0366-6964.2025.11.006

Abstract

Abstract:

The objective of this study was to estimate and compare genetic parameters of different general resilience traits using longitudinal daily feed intake data of Large White and Landrace pigs. Growth and feed intake records data from 1 692 Large white and Landrace finishing pigs were collected via automatic feeders, and used to analyze average daily gain (ADG), average daily feed intake (ADFI), average daily feeding duration (ADFD), average daily visit times (ADVT) and 8 general resilience traits were analyzed. Daily variability in feed intake (Var_FI), daily variability in feeding duration (Var_FD), daily variability in visit times (Var_VT), the log-transformed variance of deviation for the daily feed intake (LnVar_FI), the log-transformed variance of deviation for the daily feeding duration (LnVar_FD), the log-transformed variance of deviation for the daily visit times (LnVar_VT), off-feed days for corresponding feed intake (OFF_FI), and off-feed days for corresponding feeding duration (OFF_FD) were calculated as general resilience traits. The heritability and genetic correlation of the above traits were calculated using the single and multiple traits models, respectively. The results showed that the heritability of ADG, ADFI, ADFD and ADVT were 0.25, 0.49, 0.53 and 0.43, respectively. The heritability of general resilience traits Var_FI, Var_FD, Var_VT, LnVar_FI, LnVar_FD, LnVar_VT, OFF_FI and OFF_FD were 0.33, 0.26, 0.38, 0.39, 0.29, 0.37, 0.14, and 0.16, respectively. The genetic correlation was positive and high between ADG and ADFI with value of 0.83. The genetic correlation between ADG and general resilience traits ranged from -0.85 to 0.83. Specifically, there was a high positive correlation (r=0.83) between both Var_FI and ADG and between LnVar_FI and ADG, while a high negative correlation (r=-0.85) was observed between OFF_FD and ADG. There was a high negative correlation both between LnVar_FD and ADVT, and between LnVar_VT and ADG, with values of -0.89 and -0.76, respectively. In conclusion, we calculated and compared the genetic parameters of different general resilience traits, and found that the heritability of these general resilience indicators was low to moderate. Among them, LnVar_FI and Var_FI exhibited high heritability and high genetic correlations with production traits, and can be considered as evaluation indicators of general resilience traits in pigs for individual selection. The results of this study provide important theoretical basis for the breeding of general disease resistance or resilience-related traits in pigs.

Key words: pig, general resilience, longitudinal daily feed intake data, heritability, genetic correlation

CLC Number:

S828.2

ZHANG Dingxin, LENG Bingwen, LUO Wengyun, WANG Zhiyuan, ZHANG Qin, JIANG Li. Estimation of Genetic Parameters for General Resilience Traits in Pigs[J]. Acta Veterinaria et Zootechnica Sinica, 2025, 56(11): 5402-5413.

Figures/Tables 8

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References 35

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序号Number	变量Variable	阈值Threshold
1	每次访问采食量(FIV)	FIV < 0 g or FIV>1 400 g
2	每次访问采食时间(FDV)	FDV < 0 s or FDV>1 800 s
3	每次访问进料速率(FRV)	FRV≤2 g·min^-1 or FRV≥120 g·min^-1

性状 Trait	个体数 N	最小值 Min	平均值 Mean	最大值 Max	标准差 SD	平均变异系数/% CV
ADG/g	1 692	400.00	885.30	1 220.90	108.29	12.23
ADFI/g	1 692	1 179.00	2 564.00	6 599.00	805.48	31.41
ADFD/s	1 692	1 804.00	3 822.00	9 538.00	1 213.85	31.76
ADVT/n	1 692	3.73	8.95	26.98	3.25	36.30
VAR_FI/g	1 692	214.20	612.30	1 418.30	275.14	44.93
VAR_FD/s	1 692	346.49	871.40	5 658.60	563.14	64.62
VAR_VT/n	1 692	0.96	2.30	6.93	1.02	44.39
LnVar_FI	1 692	10.73	12.39	14.51	0.65	5.21
LnVar_FD	1 692	9.42	13.00	18.94	0.73	5.62
LnVar_VT	1 692	-2.73	1.50	3.87	0.64	42.69
OFF_FI/d	1 692	0	4.53	7	0.93	20.55
OFF_FD/d	1 692	0	4.54	7	0.95	20.95

性状 Trait	遗传力 Heritability	遗传相关 Genetic correlation
性状 Trait	遗传力 Heritability	ADG	ADFI	ADFD	ADVT	LnVar_FI	LnVar_FD	LnVar_VT	Var_FI	Var_FD	Var_VT	OFF_FI	OFF_FD
ADG	0.25 (0.04)	1
ADFI	0.49 (0.08)	0.83 (0.08)	1
ADFD	0.53 (0.09)	0.47 (0.20)	0.50 (0.18)	1
ADVT	0.43 (0.06)	-0.45 (0.17)	-0.17 (0.22)	-0.24 (0.33)	1
LnVar_FI	0.39 (0.06)	0.83 (0.01)	0.86 (0.06)	0.20 (0.22)	-0.48 (0.17)	1
LnVar_FD	0.29 (0.08)	0.07 (0.21)	-0.14 (0.23)	0.25 (0.31)	-0.89 (0.23)	0.10 (0.20)	1
LnVar_VT	0.37 (0.04)	-0.76 (0.25)	-0.55 (0.34)	-0.51 (0.50)	0.90 (0.11)	-0.71 (0.31)	-0.68 (0.42)	1
Var_FI	0.33 (0.06)	0.83 (0.12)	0.96 (0.05)	0.41 (0.23)	-0.37 (0.20)	0.95 (0.04)	0.04 (0.23)	-0.67 (0.33)	1
Var_FD	0.26 (0.07)	0.35 (0.24)	0.31 (0.25)	0.78 (0.24)	-0.70 (0.34)	0.31 (0.23)	0.74 (0.20)	-0.76 (0.50)	0.39 (0.24)	1
Var_VT	0.38 (0.03)	-0.69 (0.23)	-0.52 (0.30)	-0.26 (0.42)	0.90 (0.08)	-0.80 (0.25)	-0.65 (0.35)	0.94 (0.09)	-0.70 (0.31)	-0.64 (0.49)	1
OFF_FI	0.14 (0.06)	-0.63 (0.20)	-0.56 (0.25)	-0.65 (0.37)	-0.19 (0.28)	-0.23 (0.25)	0.40 (0.31)	0.18 (0.37)	-0.36 (0.25)	-0.15 (0.40)	-0.02 (0.35)	1
OFF_FD	0.16 (0.06)	-0.85 (0.19)	-0.88 (0.28)	-0.67 (0.38)	0.04 (0.27)	-0.64 (0.29)	0.25 (0.31)	0.47 (0.32)	-0.76 (0.28)	-0.32 (0.41)	0.34 (0.32)	0.87 (0.18)	1

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Estimation of Genetic Parameters for General Resilience Traits in Pigs

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