Physical Sciences and Mathematics Commons^™

Is Grassfed Meat And Dairy Better For Human And Environmental Health?, Frederick D. Provenza, Scott L. Kronberg, Pablo Gregorini

Wildland Resources Faculty Publications

The health of livestock, humans, and environments is tied to plant diversity—and associated phytochemical richness—across landscapes. Health is enhanced when livestock forage on phytochemically rich landscapes, is reduced when livestock forage on simple mixture or monoculture pastures or consume high-grain rations in feedlots, and is greatly reduced for people who eat highly processed diets. Circumstantial evidence supports the hypothesis that phytochemical richness of herbivore diets enhances biochemical richness of meat and dairy, which is linked with human and environmental health. Among many roles they play in health, phytochemicals in herbivore diets protect meat and dairy from protein oxidation and lipid …

Chemical Repellents For Reducing Crop Damage By Blackbirds, Michael L. Avery, John L. Cummings

USDA Wildlife Services: Staff Publications

Chemical repellants are intended to prevent birds from feeding on a particular food (the crop) at a given location. To be considered effective, a chemical repellent must produce 1 of 2 responses (1) depredating birds remain but feed on an alternative non-crop food item or (2) depredating birds leavc and go elsewhere to feed. The search for a safe, cost-effective chemical repellent has spanned decades. During the 1950s, 196Os, and 199Os, repellent screening programs, using captive red-winged blackbirds (Aaelaius Dboeniceus), brown-headed cowbirds (Molorhrus ater), and European starlings (Sturnus vulgaris), identified numerous potentially useful compounds. …

Dust Elimination From Outdoor Feedlots For Sheep, D J. Carter

Journal of the Department of Agriculture, Western Australia, Series 4

The humble woodchip, widwly used as a soil mulch in Western Australian gardens, is set tto take a new role as a dust inhibito in assembly yards used to hold live sheep for export.

Research by the Department of Agriculture's Soil Conservation Service Branch has shown that, of the materials tested, woodchips were the most effective in preventing dust being generated. Wind speeds had to approach a "near gale" before dust developedfrom the protected soil.

The use of woodchips, therefore, provides a practical alternative to stabalising the soil and preventing an environmental problem associated with one of the State's valuable …

Effect Of Feedlots On Water Quality, Ronald D. Cheetham, Alan J. Holmes, David Borresen

Journal of the Minnesota Academy of Science

The effect of feedlot runoff on water quality was examined. Samples were collected from river feedlots and offshore from lake feedlots and compared with samples from appropriate control sites. Bacterial contamination, as measured by the total coliform test over two successive summers, exhibited significant variation between feedlot and control sites. Coliform levels at lake sites adjacent to feedlots were double the levels at control sites; while in river systems average coliform levels downstream from feedlots were approximately 17 times the upstream controls.

Nutrient And Energy Composition Of Beef Cattle Feedlot Waste Fractions, C. B. Gilbertson, J. A. Nienaber, J. R. Ellis, T. M. Mccalla, T. J. Klopfenstein, S. D. Farlin

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

This bulletin describes nutrient and energy composition of beef cattle waste fractions as a function of the ration roughage level and type of feedlot. Results can be used to plan engineering system approaches and research to develop handling and processing equipment necessary for recovery of the most valuable portion of waste.

Lot Feeding Of Beef Cattle. 3. Facilities Required For A Feed Lot, W J O Wilkie

Journal of the Department of Agriculture, Western Australia, Series 4

MANY THINGS must be considered in planning a feed lot.

The site must be well chosen, fencing, gates and yards must be adequate for the cattle carried and feeding and watering facilities should be of a high standard.

Other things to consider are the provision of shelter and shade for the cattle and buildings for feed storage and other purposes.