Underfeeding or overfeeding CP to dairy cows can have detrimental effects on milk production, efficiency of nutrient utilization, reproduction, the environment, and the overall profitability of the dairy operation. Therefore, the amount and source of CP to feed must be determined if we are to optimize productivity, maximize nutrient utilization, avoid polluting the environment, and increase pro...

Both data whlch we present for Tomales Bay (California, USA) and general geochemical reasoning provide evidence to suggest that nearshore marine env~ronments tend to be net heterotrophic by a small margin, and that these systems oxidize on the order of 1 % of their primary production by denitrification. The rate of denitrification can be interpreted to be a simple stoichiometric function of the...

Improved domestic animal productivity is necessary in order to provide for an increasing world population over the next two to three decades and such improvement would be aided by an increase in the efficiency of nutrient utilization. This can be achieved by conventional genetic selection protocols but progress by this approach is slow. A more rapid but as yet largely unproven technique is the ...

Food UTILIZATION Utilization is commonly understood as the way the body makes the most of various nutrients in the food. Sufficient energy and nutrient intake by individuals is the result of good care and feeding practices, food preparation, diversity of the diet and intra-household distribution of food. Combined with good biological utilization of food consumed, this determines the nutritional...

Traditionally, the management of manure nutrients has focused primarily on the production, collection, storage, and field application of manure. By contrast, a total systems approach expands this focus to include concerns about human and animal health, odor and fly control, nutrient import and handling, ration balancing and feeding management to optimize dietary nutrient utilization, management...

Grafting is a centuries-old technique used in plants to obtain economic benefits. Grafting increases nutrient uptake and utilization efficiency in a number of plant species, including fruits, vegetables, and ornamentals. Selected rootstocks of the same species or close relatives are utilized in grafting. Rootstocks absorb more water and ions than self-rooted plants and transport these water and...