Nutrient efficiencies are generally greater for animals fed diets with marginal deficiencies. In a preliminary study, however, Ca efficiency was lower in pigs fed diets with a marginal Ca deficiency (J Bone Miner Re 20:S193). ...

It is widely accepted that black-footed ferrets (Mustela nigripes) are an obligate dietary specialist of prairie dogs (Cynomys spp.). Indeed, the extirpation of ferrets from the wild was attributed to the decline of prairie ...

Most in vitro embryo production (IVP) systems use some form of bovine sera in media. The most commonly used sera in maturation of bovine oocytes is fetal calf serum. A potential problem arising from this practice is ...

Reduced respiratory neural activity in ventilated rats elicits rebound increases in phrenic discharge upon neural activity restoration, a plasticity called inactivity-induced phrenic motor facilitation (iPMF). We hypothesized ...

Nutritionally and economically-important heat-labile proteins, including enzymes, hormones, and antibodies (Ab), lose a substantial amount of activity following industrial processing. Protection of these heat-sensitive ...