Page 16 of articles about sow in Abstracts

The use of ingredients with high DF content in sow diets may reduce the physical activity of the sow.

The aim of this study was to evaluate the influence of sow body reserves at weaning and body reserve losses during the first lactation on the second litter size (SLS). A number of 1222 females which reached the second parity without failures such as return to estrus after insemination, abortion or failure to farrow, were analyzed. Measurements of body weight (BW), backfat thickness (BT) and body condition score (BCS) were taken within 24 h after farrowing and on the weaning day.

In this study, we established whether controlling backfat thickness at breeding over a long time period can result in optimized reproductive performance in sows.

The effects of an extended photoperiod around parturition and throughout lactation on performances of primiparous sows and their piglets were studied.

Sow and litter performance may be improved by dietary yeast cell supplementation.

It was concluded that natural infection of PEDV in the pregnant gilts and sows caused a reduction of subsequent reproductive performance.

The study evaluated the influence of growth rate (GR) and backfat thickness (BF), at first mating of gilts, on the reproductive performance until the first farrowing and on the variation in birth weight of piglets.

Early embryo development requires a dynamic and active uterine environment tailored to the requirements of each embryonic stage. The development of asynchrony between the embryo and uterine environment during embryo transfer has been directly linked with both embryonic loss and abnormal development. Hyaluronic Acid (HA), has been implicated as an important factor in porcine embryo development in vitro, but little data exists on the concentrations of this glycoaminoglycan in the porcine female reproductive tract and its potential application in embryo transfer procedures.

Objectives: To determine estrus and ovulation responses of gilts and sows to different doses of equine chorionic gonadotrophin (eCG), with different intervals between eCG and luteinizing hormone (pLH) injections.

Formulating a sow diet based on percent lysine is only effective when total feed intake is known.

Current NRC (1998) recommendations for amino acids (AA) do not account for different requirements in early vs late gestation due to changes in metabolism; recovery of body tissue from previous lactation, and fetal, gut and mammary growth in late gestation. These increases in gut and mammary tissue and gut mucin suggest that there is a higher requirement for threonine (THR) in late gestation.

Dietary L-Arginine supplementation may negatively affect gilt reproductive performance.

We assessed how piglets play, fighting and biting behaviour before and after weaning were affected by the housing system and weaning age as well as how the three behaviours are related to each other and piglet post-weaning weight gain.

Liquid feeding during lactation may increase feed intake without affecting piglet performance

The present study was conducted to evaluate non-return rate (NR), farrowing rate (FR), and number of total pigs born/litter (TB) of weaned sows after intra-uterine insemination (IUI) using low numbers of frozen–thawed (FT) spermatozoa.

Post-weaning treatment with Altrenogest of first litter sows influenced follicle size and shortened the follicular phase, but did not affect ovulation rate or early embryonic development.