Specific crosses resulting in 305 litters sired by Duroc, Spot or Hampshire boars out of Landrace, Duroc-Landrace or YorkshireLandrace sows were evaluated for preweaning and postweaning performance. Duroc-sired litters were heavier (P<.05) at 21 days postfarrowing than Spotor Hampshiresired litters. Hampshire-sired litters were heavier (P<.05) at birth than Spot-s i red litters. Litters from cr...

The effects of altering litter size during the 5 days before weaning on interval to estrus of sows and postweaning performance of pigs were examined. Litters averaged 8.3 +/- .7 pigs from parturition until 5 days before weaning. Litters were then adjusted so that sows (five per group) nursed small- (three pigs), average- (eight pigs) or large-sized (13 to 14 pigs) litters during the last 5 days...

An experiment was conducted to examine the effect of the nursery feeding program on subsequent growth performance, carcass quality, meat quality, and physical and chemical body composition of growing-finishing pigs. Four dietary treatments were used in a 2 × 2 factorial arrangement of treatments based on diet complexity (Complex vs. Simple) and in-feed antibiotics (2,730 [+AB] vs. 0 [-AB] mg of...

Abstract. Given a doubling measure μ on R, it is a classical result of harmonic analysis that Calderón-Zygmund operators which are bounded in L(μ) are also of weak type (1, 1). Recently it has been shown that the same result holds if one substitutes the doubling condition on μ by a mild growth condition on μ. In this paper another proof of this result is given. The proof is very close in spirit...

A change in subtask order in the psychological refractory period (PRP) paradigm increases the effect of stimulus onset asynchrony (SOA) on the second response. We used a paradigm with cued, randomly determined subtask order to test the hypothesis that this SOA by order switch overadditivity reflects order control, via "copying" stimulus order. In Experiments 1a and 1b, overadditivity was eviden...

postfarrowing. The following sow performance criteria will be collected: litter size (total and live), number and weight of pigs at weaning, and return to estrus (relative to weaning date). Pigs will be weaned at 17 to 21 days post weaning. Daily heat checking will be initiated three days postweaning until expression of estrus. Sows will be bred at the first or second estrus postweaning. Sows t...

Gravitational forces, including hypergravity or microgravity, induce plasticity of vestibular-related functions. These functions are not easily reversed if exposure to the gravitational forces occurs during vestibular development. In the present study, we hypothesized that vestibular-related stress responses might be suppressed in rats exposed to hypergravity during the vestibular development p...

Seventy-four piglets were used to investigate the effects of dietary glutamine (Gln) and glutamate (Glu) on the mucosal structure and active absorption of small intestinal, DNA and RNA concentrations of skeletal muscle tissue in piglets during d 28 to 42 of age. Postweaning piglets were fed for 14 d cornand soybean meal-based diets supplemented with 0.0 or 1.0% L-Gln or L-Glu. On d 7 and 14 pos...

Inbred C57BL/6J mice displayed large individual variations in weight gain when fed a high-fat diet (HFD). The objective of this study was to examine whether this predominantly nongenetic variability could be predicted by relevant baseline features and to explore whether variations in these significant features were influenced during pregnancy and/or lactation. Fat mass (FM), fat-free mass (FFM)...

Escherichia coli F18 bacteria producing enterotoxins and/or shigatoxin (ETEC/STEC) are main pathogens that cause oedema disease and postweaning diarrhoea in piglets, and alpha-1-fucosyltransferase (FUT1) gene has been identified as a candidate gene for controlling the expression of ETEC F18 receptor. The genetic variations at nucleotide position 307 in open reading frame of FUT1 gene in one wil...