ANALYZING THE EFFECT OF CHANGING FEED-BEEF PRICE RELATIONSHIPS ON BEEF PRODUCTION MANAGEMENT STRATEGIES IN HAWAII: A DYNAMIC PROGRAMMING APPROACH

A dynamic programming approach was used to evaluate the effect of changing the feed input to product price relationship on the beef production management decision process. The dynamic programming model consists of nine submodels describing and analyzing the time-dependent beef production management decision process. The model incorporates biological functions and economic principles. Results clearly showed the importance of the feed-beef price relationships in management decision making. Optimal beef production management strategies were generally consistent with beef production management practices followed in Hawaii under those feed-beef price relationships.Livestock Production/Industries,

Grazing System Identification

Grazing system terminology is a problem in the range management field. The proposed dichotomous key standardizes terminology and facilitates communication.This material was digitized as part of a cooperative project between the Society for Range Management and the University of Arizona Libraries.The Journal of Range Management archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact [email protected] for further information.Migrated from OJS platform August 202

ANALYZING THE EFFECT OF CHANGING FEED-BEEF PRICE RELATIONSHIPS ON BEEF PRODUCTION MANAGEMENT STRATEGIES IN HAWAII: A DYNAMIC PROGRAMMING APPROACH

A dynamic programming approach was used to evaluate the effect of changing the feed input to product price relationship on the beef production management decision process. The dynamic programming model consists of nine submodels describing and analyzing the time-dependent beef production management decision process. The model incorporates biological functions and economic principles. Results clearly showed the importance of the feed-beef price relationships in management decision making. Optimal beef production management strategies were generally consistent with beef production management practices followed in Hawaii under those feed-beef price relationships

Massive hydraulic fracturing well, Federal No. 498-4-1, Rio Blanco County, Colorado. Final report

This project is an MHF of a previously untreated Mesaverde interval in a well in northwest Colorado. The rocks involved may have been deposited during a marine invasion of long-continued, swamp environments. If so, they would have possessed superior primary reservoir properties. The logging program, identical to those used in the nearby Rio Blanco Nuclear and MHF Project wells, supplied contradictory information. The frac could furnish better understanding of the log suite, better parameters for pre-frac judgments of productive potential and further proof of the commercial capabilities of the formation. The frac job was performed as designed. A total of 775,000 lbs of sand in a total of 276,000 gallons of gelled water (YF4PSD) were injected. The injection pressures ranged from 2,000 to 1,300 psig at rates from 37 to 10 BPM. During the post-frac clean up, 30% of the frac fluid flowed back in 36 hours. Following eight days of swabbing and a total fluid recovery of 46%, the well began continuous flow, which within an additional three days brought total fluid recovery to 70%. Then gas flow increased from gas-cut water to 800 MSCF/D and declined to about 200 MSCF/D within 22 days. After over four months of production and cumulative frac fluid recovery of 82%, the gas rate appears to stabilize at around 130 MSCF/D with about 7 BF/D which contain over 50% oil. The post-frac to pre-frac production ratio is 2:1. It is concluded that revision of interpretive methods and/or logging programs is required if consistency in selecting zones most productive of gas and most receptive to stimulation is to be achieved. Injecting large volumes into short vertical intervals appears presently economically unattractive in this area. Properly designed moderate volume multiple fracs may achieve commercial deliverability

Herbage Response to Grazing Systems and Stocking Intensities

A review of pertinent literature shows that grazing systems and grazing intensities both influence herbage production on Western ranges. Mean annual herbage production increased by 13% when grazing systems were implemented at a moderate stocking intensity. Increases were larger (35% and 27%) when continuous livestock use was reduced from heavy to moderate, and moderate to light, respectively. This suggests that adjustments in livestock numbers have a greater effect on herbage production than do grazing systems.This material was digitized as part of a cooperative project between the Society for Range Management and the University of Arizona Libraries.The Journal of Range Management archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact [email protected] for further information.Migrated from OJS platform August 202

Comparison of Herbage Production on Moderately Grazed and Ungrazed Western Ranges

The hypothesis that there is no difference in the total amount of herbage produced on moderately grazed and ungrazed Western ranges was proposed and rejected. It was rejected because published literature shows that annual herbage production averaged 68 +/- 46% higher when plots were protected from a moderate level of livestock grazing. Likewise, herbage production of individual plants averaged 59 +/- 50% higher when they were protected, rather than clipped at a moderate level of use.This material was digitized as part of a cooperative project between the Society for Range Management and the University of Arizona Libraries.The Journal of Range Management archives are made available by the Society for Range Management and the University of Arizona Libraries. Contact [email protected] for further information.Migrated from OJS platform August 202