Page 5 of articles about gestation

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.

The current study demonstrated that the farrowing system design can influence sow behaviour, with pens allowing for more interactions between sows and their piglets.

A minimum dietary intake of both α-linolenic and linoleic acid is required for the modern lactating sow to achieve a maximum reproductive outcome.

This work establishes fundamental time points in placenta development corresponding to fetal growth and microfold formation that may influence fetal growth and impact fetal survival.

Colostrum production and immunoglobulin concentrations to conjugated linoleic acid during late gestation.

This study showed the potential to select on longer interval from last insemination to culling in days and thereby select against sows to be culled within the reproduction, locomotion, accident, general disorder and peri-partum cull class and to be culled at the end of a parity.

Heat stress during the first half of gestation altered metabolic and body composition parameters during future development and in biological responses to a subsequent heat stress challenge.

Sow dietary supplementation with aniseed extract during late gestation and lactation improves milk yield and litter performance.

In conclusion, premature births increase the number of intra-partum deaths and result in lower birthweights, the presence of apnoea, and severe metabolic alterations in piglets.

Diet deprivation and subsequent over-allowance during gestation does not impair postnatal piglet growth.

In conclusion, a greater PRL/P4 ratio 24 h prepartum, characterized by lower P4 concentrations and a trend for greater PRL concentrations peripartum, led to increased colostrum yield in primiparous sows.

Our results suggest that at least at the chosen stocking densities, parity and space allocation have minimal effect on a number of commonly-used welfare measures.

The use of different dietary energy levels during gilt rearing affects the level of body reserves but not productive and reproductive performance.

Magnesium supplementation can increase reproductive performance in adult sows.