Pelleted diets for lactating sows

Ringworm in lactating sows

A 100-sow farrow-to-feeder farm with an outdoor gestation lot had a 4-year history of ring-like skin lesions in lactating sows. On average, 90% of sows in each 5-week batch developed lesions within a week of entering the farrowing house. Lesions beginning as 2to 3-cm circles of dark, crusty skin coalesced into larger areas on the back, sides, and ventral abdomen. No etiologic agent was identifi...

Use of crude glycerol, a biodiesel coproduct, in diets for lactating sows.

An experiment was conducted to evaluate the effect of dietary crude glycerol in lactating sow diets on sow and litter performance under heat stress conditions. Mixed parity (range = 0 to 13) sows (n = 345; 253 +/- 24 kg of BW) were assigned randomly within gestation housing location and parity to 1 of 4 dietary treatments. Treatments consisted of a corn-soybean-based control diet (CON) and 3, 6...

Evaluation of high nutrient diets on litter performance of heat-stressed lactating sows

OBJECTIVE The present study investigated the litter performance of multiparous sows fed 3% and 6% densified diets at farrowing to weaning during summer with mean maximum room temperature of 30.5°C. METHODS A total of 60 crossbred multiparous sows were allotted to one of three treatments based on body weight according to a completely randomized design. Three different nutrient levels based on ...

Effect of Heat Stress on Lactating Sows

[Concentration of nitrosodimethylamine in commercial pelleted experimental animal diets].

To know the conditions of contamination by the chemicals in the experimental animal diets, the contents of nitrosodimethylamine (NDMA) were analyzed in the diets for mice and rats. The raw materials of the diets were also analyzed. In addition, NDMA levels were determined in the diets which were stored long or heated in the autoclaves. The averages of NDMA in these diets were less than 10 ppb. ...