Download or read book An Economic Analysis of the Predator Problem in the Range sheep Industry in Utah written by David Murray Curle and published by . This book was released on 1970 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: The economic effects, to the Utah range-sheep operation and to the economy of the state of Utah, of predation upon sheep were studied by use of a personal interview survey. This survey sampled 20 percent of the range-sheep operations in Utah. The sheep and lamb death loss from predation was found to be 61.0 sheep and lambs per 1,000 head of ewes in fiscal 1969. The survey also showed that 71.36 percent of the losses were lambs and 28.64 percent were ewes. The total economic loss to Utah sheep ranchers was calculated to be 1,062,502 dollars as a result of predation, in fiscal year 1969. Using the Type II multiplier of 4.330 for the livestock industry, published by the University of Utah, the total economic loss, resulting from predation upon sheep and lambs, to all sectors of the economy of the state of Utah, was determined as 3,901,854 dollars The bounty system was found to be the least costly method of controlling predators, followed by private control methods. The Utah District, Division of Wildlife Services, had the highest control cost per predator, and this increased drastically when a change of name and changes in personnel and policies were instituted for this federal predator control agency.
Download or read book An Economic Analysis of Predation Control and Predatory Sheep Losses in Southwestern Utah written by R. Garth Taylor and published by . This book was released on 1977 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: To provide accurate data concerning sheep losses resulting from predation, a verification study of sheep predation was initiated in March 1972 in the Cedar City area of Utah. In cooperation with the Cedar City Wool Growers Association and Southern Utah State College Experimental Farm, ten sheep ranches were chosen as sample operations, forming the data base for the initial phase of the study (1972-1974). Cooperating ranchers were asked to promptly report all sheep carcasses or injured sheep, so that an examination could immediately be made to ascertain the cause of death or injury. Daily horseback searches were also conducted on the spring and summer ranges. Every located sheep carcass was examined to determine cause of death. If a predator was responsible, the kill was photographed and location, date, species of predator and age class of carcass was recorded. Coyotes were the principal predator inflicting 89 to 100 percent of the kills. Lambs were the principal age class of predator kills. The number of sheep carcasses found and verified as predator kills and natural losses was substantially less than the total number lost. Therefore, a proportion was used to estimate the total predation rate. The average predation rate was 5.9 percent expressed as a percent of lamb crop. In the final year of the study (1975) three herds were chosen and research efforts were intensified and the validity of the statistical inference was confirmed. An estimated total predation loss of 3028 lambs was incurred by herds 1-10 in 1972 to 1974. In 1975, 158 lambs were destroyed by predators in herds 1, 3 and 5. These losses were valued at $89,347. Assuming the sample predation rate is representative of predation losses throughout Utah, the state-wide lamb loss to predators was calculated to be 127,521 lambs, representing a direct income loss to the Utah sheep industry of $3,622,061. The indirect or multiplier losses represented an additional $10,072,911 loss to the state economy. Two models were developed. The first, a cost model, illustrated the nature of the costs of coyote predation, their effects upon the rancher and several approaches to profit maximization with and without coyote predation. The second model approached predation economics from a biological standpoint to identify research needs for future inquiries into predation economics. The relationships between coyote population dynamics, coyote control and predatory sheep losses were discussed, leading to the formulation of an economic production function model. The model provides a conceptual framework to determine the effectiveness and optimum rate of predator control efforts.
Download or read book Problems of Predator Control written by United States. Congress. Senate. Committee on Interior and Insular Affairs. Subcommittee on Public Lands and published by . This book was released on 1973 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Factors in the Decline of the Western Sheep Industry written by and published by . This book was released on 1977 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessment of Sheep Losses to Coyotes written by John Warner Davenport and published by . This book was released on 1973 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Predation on Domestic Sheep on Summer Range Lands in Southwestern Utah written by Brian Carl Palmer and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Much of the decline of the U.S. sheep industry has been attributed to losses caused by predators. Most predatory losses are inflicted on lambs rather than ewes. Losses have historically ranged from 4-8% of lamb crops, inflicting significant financial loss on ranchers. However, most research providing data on sheep predation is over 20 years old. Changes in the sheep industry as well as predation rates may make previous loss rates inapplicable to current conditions. Coyotes (Canis latrans) are the primary predator of concern when it comes to sheep losses, but increasingly, cougars (Felis concolor) and black bears (Ursus americanus) are reported to be responsible for an increased proportion of lamb losses. I replicated a sheep depredation study conducted during the early 1970s in southwestern Utah and compared the results of the two studies to reassess losses and the predator species responsible for those losses. Total lamb losses to all causes in my study were comparable to losses reported in the 1970s as well as categories of verified and estimated predator losses. There was a significant variation in lamb losses between the 2 years of my study due to an increase in predator kills on sheep. Cougar and bear depredations occurred at significantly higher rates during my study than during the 1970s but did not produce an additive effect to overall predator losses. Most lambs killed by predators were located on or near pasture bed grounds as reported by other studies, but a large number were found>500 m from bed grounds. Rough terrain and scavenging by California condors (Gymnogyps californianus) made location of missing sheep difficult. The ability of cougars and bears to remove sheep carcasses from kill sites made the finding of sheep carcasses more difficult and caused an underreporting of sheep killed by these predators. I found that the loss of sheep to predation continues to be a problem for the sheep industry and its magnitude was unchanged from historic predation levels.
Download or read book Proceedings of a Symposium on the Native Cats of North America Their Status and Management written by Samuel E. Jorgensen and published by . This book was released on 1973 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Economic Study of Range Sheep Production on the Red Desert and Adjoining Areas written by Alonzo Frederick Vass and published by . This book was released on 1927 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sheep and Lamb Losses to Predators and Other Causes in the Western United States written by and published by . This book was released on 1977 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Predator Control Hearings Before the Subcommittee on the Environment 93 1 on S 819 S 887 March 27 29 and May 10 1973 written by United States. Congress. Senate. Committee on Commerce and published by . This book was released on 1973 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Economic Study of Predation in the Idaho Range Sheep Industry 1972 73 written by John O. Early and published by . This book was released on 1974 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Predator Control written by United States. Congress. Senate. Committee on Commerce. Subcommittee on the Environment and published by . This book was released on 1973 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Economic Study of Sheep Production in Southwestern Utah written by Dee Albert Broadbent and published by . This book was released on 1946 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Economic Analysis of Farm Flock Sheep Production in Utah written by Ken Beck and published by . This book was released on 1981 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Economic Study of Predation in the Idaho Range Sheep Industry 1970 71 Production Cycle written by John Oak Early and published by . This book was released on 1974 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Predator Control and the Sheep Industry written by Frederic H. Wagner and published by . This book was released on 1988 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the 1975 Predator Symposium written by Robert L. Phillips and published by . This book was released on 1977 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt:
