Electric arc device for heating gases Patent

Electric arc device for minimizing electrode ablation and heating gases to supersonic or hypersonic wind tunnel temperature

Pulse-width modulation multiplier Patent

Pulse duration modulation multiplier syste

The fourier series of gegenbauer's function

Theoretical analysis of Fourier series of Gegenbauer function - methods for integration of Gegenbauer function and Fourier coefficient

What Are the Costs for Poultry Research?

A previous report (Carlson and Mountney, 1976) summarized the scientist year (SY) and publication costs for poultry in fiscal year 1974. A similar study has now been conducted with reports available for 1975. Data were compiled from the USDA\u27s Inventory of Agricultural Research, Vol. I and II, for 1975 and research reports enumerated from the USDA Current Research Information System\u27s (CRIS) progress reports (Form 421) for 1975. Expenditures for State Agricultural Experiment Stations (SAES) only were tabulated

Nutrition of Growing Pullets

Probably less is known about the nutrient requirements of growing pullets than of any other stage in the life of the chicken. Until recently, she has just been fed what we thought were her needs and she generally did quite well on quite a wide variety of regimes. This report covers a summary of the little we know

Research Projects for Next Years

The research projects underway at the Poultry Research Unit are scheduled for several year\u27s duration. Therefore, studies in the areas covered by this report for the most part will be continued. Some areas will be phased out, others will receive new emphasis and new projects will be started

Feeding Systems for Layers

Numerous reports show there are many feeding systems for layers that the poultryman will find satisfactory. The important factor for good results is proper management of the feeding system. Essentially the most common feeding systems recommended and in use today are ( 1) all-mash, ( 2) 18-20 percent protein mash with limited or free-choice grain, and (3) 25-27 percent protein concentrate with free-choice grain. Some poultrymen have reported successful use of a 32 percent protein concentrate fed free-choice with grains. The laying hen has a remarkable ability to balance her own ration, but it has generally been felt that more concentrate is consumed than necessary •when a 32 percent protein concentrate is used. Before poultrymen started to use high energy feeds, all-mash rations were considered somewhat low in energy for maximum egg production-particularly during the winter. High energy all-mash diets should supply the extra energy needed for maintenance under cold weather conditions and therefore support production equal to that of the other systems. Many field reports indicate that some all-mash diets today are giving better results than the various mash and grain feeding systems. Here are some of the reasons poultrymen have again become interested in all-mash diets. 1) Bulk handling of feed has greater application where all-mash diets are used. Bulk handling of feed, in itself, appeals to many because of price discounts and the economy of handling costs. 2) All-mash feeds are more adaptable for use in mechanical feeders and cage-feeding operations. 3) Use of fats and oils in feeds to increase energy content finds greater application in all-mash feeds. The data in this circular were obtained from three experiments with heavy-type hens in which three feeding systems were compared. Also data obtained from use of a 20 percent protein mash and free-choice grain feeding system with various groups of layers are presented

Some Effects Of Different Levels Of Distillers Dried Grain With Solubles And Oats On Fatty Liver Hemorrhagic Syndrome

The recent view regarding the etiology of Fatty Liver Hemorrhagic Syndrome (FLHS) is that it is supposed to be nutritional in origin. Previous research at Georgia had shown that a fermentation by-product added to a layer diet helped to reduce the incidence of FLHS. At this station, oats have been shown to contain some protective factor against FLHS

Effect of Distillers\u27 Grains And Oats On Fatty Liver Hemorrhagic Syndrome

Fatty liver hemorrhagic syndrome (FLHS) can be a major cause for economic loss due to excessive mortality. Egg production may or may not be affected by this disease. The etiology of this disease is still uncertain, although several nutritional factors are supposed to be associated with it. Several nutritional factors and different feed ingredients have been tried in experiments at this research center with various results (A.S. Series 75-28, 76-1, 77-27, 78-5 and 79-24)

Some Effects Of Lactobacillus Cultures On Egg Production

Previous studies at this station on the addition of probiotics to turkey and broiler feeds have shown some favorable results; but, for the most part, there has been no response as has been the case for laying hens (see A.S. Series 76-10, 77-20 and 78-7). Probiotics usually contain, among other things, Lactobacillus types of cultures and are defined as being products which favor the establishment of life