Now showing items 1-8 of 8
Sorption of estrogen to three agricultural soils from Virginia, USA
(American Society of Agricultural and Biological Engineers, 2008)
Land-applied manures and grazing livestock are sources of estrogens to the environment. Natural steroid estrogens such as 17 beta-estradiol (E2) in low concentrations (ng L(-1)) can adversely affect the reproductive health ...
Dietary phosphorus effects on characteristics of mechanically separated dairy manure
(American Society of Agricultural and Biological Engineers, 2005)
One approach to reduce nutrient losses from livestock farms is to apply biological waste treatment systems such as biological nitrogen (N) removal or enhanced biological phosphorus (P) removal (EBPR) to reduce the nutrient ...
The effects of dietary protein content and manure handling technique on ammonia emissions during short-term storage of dairy cow manure
(American Society of Agricultural and Biological Engineers, 2011)
An improved understanding of the potential for dietary protein manipulation to reduce ammonia emissions from dairy farms during various stages of manure handling is needed for both modeling and policy-making efforts. The ...
Excretion of antibiotic resistance genes by dairy calves fed milk replacers with varying doses of antibiotics
(Frontiers Research Foundation, 2012-01-01)