Feeding two different levels in sows during late gestation: effects on reproductive performance and piglet birth weight
Dietary levels of 1.8 and 2.2 kg/d in late gestation do not differ on reproductive and piglet performance.
Page 3 of articles about gestation
An update on sow amino acid research
Sow nutrition research has historically been only about 2% of the swine scientific literature, but new commercial facilities are changing this.
Factors of importance when selecting sows as embryo donors
The improvement in porcine embryo preservation and non-surgical embryo transfer (ET) procedures achieved in recent years represents essential progress for the practical use of ET in the pig industry.
The behaviour and welfare of sows and piglets in farrowing crates or lactation pens
Three experiments were conducted to investigate the implications of replacing farrowing crates with an alternative housing system from 3 days postpartum until weaning.
Reproductive performance following non-surgical deep uterine porcine embryo transfer
The aim of this study was to evaluate the effects of the weaned recipients' parity on fertility and prolificacy following NsDU-ET.
Energy and lysine requirements of sows during transition and lactation
The SID Lys:ME ratio during lactation depends on a milk yield and the body weight of the sow.
Frequency and time of gestation feeding and their subsequent effects on farrowing performance
Effect of feeding time and frequency during gestation does not affect farrowing performance.
Different feeding levels during wean-to-estrus and first week of gestation of sows
High feeding level during the wean-to-oestrus may increase farrowing rate but also may increase stillborn rate and reduce piglet birth weight.
Outcomes of gestation length in relation to farrowing performance
Premature births increase the number of intra-partum deaths and result in lower birthweights, the presence of apnoea, and severe metabolic alterations in piglets.
How efficient are the current hyper-prolific lactating sows? (1/2)
The study described here was designed to determine if the body tissue mobilization during lactation imposed by feed restriction could affect litter size and sow performance in the subsequent lactation.
Factors for improving reproductive performance of sows and herd productivity in commercial breeding herds
We review critical factors associated with reproductive performance of female breeding pigs, their lifetime performance and herd productivity in commercial herds. The factors include both sow-level and herd-level factors.
Comparing gestating sows housing between electronic sow feeding system and a conventional stall
Although the better sow and litter performance for group housed sows with electronic feeding system some improvements are still required in terms of body scratch and locomotion disorders.
Feeding level during gestation affects farrowing and litter performance
Increasing feeding level during gestation may improve piglet body weight at birth but have a negative impact on feed intake and backfat loss during lactation.
Palygorskite dietary supplementation effects on back fat mobilization, leptin levels and oxidative stress in sows
The use of palygorskite in sow diets reduces oxidative stress in gestating sows.
Clinical case: Increase of returns in summer and low annual prolificacy
The farm reports a problem of low prolificacy (mean annual live births of 11.91) and low fertility in summer, with a marked increase in acyclic returns.
Relationships between ovulation rate and embryonic and placental characteristics in multiparous sows at 35 days of pregnancy
A high avulation rate results in an moderate increase in the number of vital embryos at day 35 of pregnancy, but compromises development in the surviving embryonic/placental units, suggesting that the future growth and survival of the embryos might be further compromised.