Survival analysis of piglet pre-weaning mortality

被引：7
|
作者：
Cecchinato, A. [1 ]
Maretto, F. [1 ]
Zanetti, E. [1 ]
Carnier, P. [1 ]
机构：
[1] Univ Padua, Dipartimento Sci Anim, I-35020 Legnaro, PD, Italy
来源：
ITALIAN JOURNAL OF ANIMAL SCIENCE | 2007年 / 6卷
关键词：
piglet; pre-weaning mortality; survival analysis;
D O I：
10.4081/ijas.2007.1s.67
中图分类号：
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号：
0905 ;
摘要：
Survival analysis methodology was applied in order to analyse sources of variation of preweaning survival time and to estimate variance components using data from a crossbred piglets population. A frailty sire model was used with the litter effect treated as an additional random source of variation. All the variables considered had a significant effect on survivability: sex, cross-fostering, parity of the nurse-sow and litter size. The variance estimates of sire and litter were closed to 0.08 and 2 respectively and the heritability of pre-weaning survival was 0.03.
引用
收藏
页码：67 / 69
页数：3
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