With increasing disparity between broiler breeder target weights and broiler growth potential, maintenance energy requirements have become a larger proportion of total broiler breeder energy intake. Because energy is partitioned to growth and egg production at a lower priority than maintenance, accurate prediction of maintenance energy requirements is important for practical broiler breeder fee...

Three experiments were conducted to evaluate levels and sources of dietary energy for growing-finishing pigs during cool and warm seasons. The specific objective was to determine the effect of lower energy diets containing more fiber during cooler temperatures. In Exp. 1, lower energy diets supported daily gains equal to those of pigs fed higher energy diets during low temperature trials, but g...

The GANE (glutamate amplifies noradrenergic effects) model proposed by Mather et al. attempts to explain how norepinephrine enhances processing in highly activated brain regions. Careful perusal of the sparse data available from recording studies in animals reveals that noradrenergic neurons are excited mainly by any change in the environment - a salient, novel, or unexpected sensory stimulus o...

BACKGROUND Tobacco settlement funds were used to establish the Healthy Maine Partnerships (HMPs) to reduce tobacco use, increase physical activity, and improve nutrition through local policy and environmental change. CONTEXT The HMP model is a progressive approach to public health. It provides for coordinated efforts between state and local partners for health promotion and disease prevention...

During the last few decades, the prevalence of allergic disease has increased dramatically. The development of allergic diseases has been attributed to complex interactions between environmental factors and genetic factors. Of the many possible environmental factors, most research has focused on the most commonly encountered environmental factors, such as air pollution and environmental microbi...

changes in the masthead of the journal, reflecting a renewed commitment to publishing the best research and news in the environmental health sciences. In the 4 months since I assumed the role of editor-inchief for EHP, I have added 21 new associate editors and 26 new Editorial Review Board members. Associate editors are responsible for managing the peer review of papers and making a recommendat...

Earth is teeming with taxonomically, phylogenetically, and metabolically highly diverse microorganisms ; organisms that are crucial for sustaining life on our planet in that they carry out processes of great biogeochemical significance. The processes and mechanisms underlying their diversity and distribution are, thus, of great interest, yet—despite their importance—only poorly understood. Micr...

Introduction Conclusions References

Article history: Holocene environmental ch Received 1 September 2005