The effect of parity order and lactation weight loss on subsequent reproductive performance of sows

被引:7
作者
Mellagi, A. P. G. [1 ]
Panzardi, A. [1 ]
Bierhals, T. [1 ]
Gheller, N. B. [1 ]
Bernardi, M. L. [2 ]
Wentz, I. [1 ]
Bortolozzo, F. P. [1 ]
机构
[1] Univ Fed Rio Grande do Sul, Fac Vet, Porto Alegre, RS, Brazil
[2] Univ Fed Rio Grande do Sul, Fac Agron, Porto Alegre, RS, Brazil
关键词
sow; parity; catabolism; lactation; reproductive performance; PRIMIPAROUS SOWS; FOLLICULAR DEVELOPMENT; OOCYTE MATURATION; COMMERCIAL FARMS; METABOLIC STATE; FEED-INTAKE; RESTRICTION; ENDOCRINE; FERTILITY; NUTRITION;
D O I
10.1590/S0102-09352013000300030
中图分类号
S85 [动物医学(兽医学)];
学科分类号
0906 ;
摘要
The effect of parity (PO) and weight loss during lactation on the subsequent reproductive performance of 666 sows was investigated. Sows were allocated into three PO classes (PO1, PO2 and PO3-5) and into two classes of weight loss percentage (<= 1% and >1%) during lactation. Farrowing rate, weaning to estrus interval (WEI) and total born at next farrow were evaluated. There was an interaction effect between PO and weight loss on the farrowing rate (P<0.05). PO1 and PO2 females had more chance (P<0.05) of failure to farrow when weight loss was higher than 1%. However, the higher weight loss was not a risk factor to low farrowing rate in PO3-5 females (P>0.05). There was no interaction between PO and weight loss (P>0.05) on WEI and subsequent total born. PO1 females showed longer WEI and lower litter size on subsequent farrowing compared to PO2 and PO3-5 females. Weight loss did not affect WEI (P>0.05), but it decreased subsequent litter size (P<0.05). High weight loss during lactation results an increase in reproductive failures in young females and decreases subsequent litter size in all parity orders.
引用
收藏
页码:819 / 825
页数:7
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