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- Comparison of Alternative Winter Farrowing Techniques on Four Niman Ranch Cooperating Farms in Southern Minnesota (pdf), Iowa State University, January 2006 - Research was conducted during two winters, 2002 and 2003, at four farms that sell to Niman Ranch Pork Company.
- Cost of Pork Production with Nonsubtherapeutic Use of Antibiotics (pdf), Iowa State University, January 2003 - This report says production costs increase when pigs are not given subtherapeutic antibiotics. The study was conducted using an outdoor production system.
- An Economic Analysis of Pork Production in Hoop and Confinement Facilities: A Summer Comparison (pdf), Iowa State University - This research study compared the profit potential between two types of pork grow-finish production facilities, hoop and total confinement, during summer months in Iowa.
- An Economic Analysis of Pork Production in Hoop and Confinement Facilities: A Winter Comparison (pdf), Iowa State University - This research study compared the profit potential between two types of pork grow-finish production facilities, hoop and total confinement, during winter months in Iowa.
- An Economic Analysis of Swine Rearing Systems for North Dakota, Dickinson Research Extension Center, North Dakota State University - In this 2001 study, growth performance and carcass characteristics for growing-finishing pigs were researched using three types of facilities: outdoor pens, hoop buildings and conventional confinement facilities.
- Economics of Breeding, Gestating and Farrowing Hogs in “Natural Pork” Production: Financial Comparison (pdf), Iowa State University, January 2006 - This report provides a budget estimate for producing weaner pigs in a natural, Niman Ranch style operation.
- Economics of Finishing Pigs in Hoop Structures and Confinement: a Summer Group (pdf), Iowa State University - This research report was part of an ongoing study looking at the profitability and risk for hoop and confinement production facilities for finishing pigs during summer months.
- Economics of Finishing Pigs in Hoop Structures and Confinement: a Winter Group (pdf), Iowa State University - This research report was part of an ongoing study looking at the profitability and risk for hoop and confinement production facilities for finishing pigs during winter months.
- Effect of Housing System and Physical Environment on Post-Weaning Pig Performance (pdf), Iowa State University - This research study was conducted to document the physical environment and growth performance of nursery pigs in hoop structures compared with pigs reared in confinement nurseries.
- The Effect of Space Allocation in Hoop Structures on Swine Performance and Pork Quality (pdf), Iowa State University, January 2006 - This study found a stocking density ranging from 7.5 sq. ft./pig to 12.0 sq. ft./pig does not influence swine growth performance or pork quality.
- Evaluating Growth, Loin Muscle Area, and Backfat Accretion During Summer and Winter for Finishing Pigs in Bedded Hoop and Confinement Buildings (pdf), Iowa State University, January 2006 - This study evaluated differences in accretion rates for bodyweight, backfat and loin muscle area that occurred during the finishing period.
- Oat Based Diets for Market Pigs in Deep-bedded Hoop Barns (pdf), Iowa State University, January 2003 - The objective of this study was to determine the effect of oats in diets on the performance of finishing pigs in deep-bedded hoop barns.
- Okara: A Possible High Protein Feedstuff for Organic Pig Diets, Iowa State University, 2004 - Okara, a byproduct of ground soybeans used for the production of soy milk and tofu, was tested as a potential organic protein source.
- Performance of Barrows and Gilts in Hoop Structures and Confinement During Winter and Summer (pdf), Iowa State University - The objectives of this research study were to document the performance of barrows and gilts fed in hoops during the summer and winter, and to evaluate barrow and gilt performance in hoops compared with barrows and gilts in a confinement housing system.
- Performance of Pigs in a Swedish Bedded Group Lactation and Nursery System (pdf), Iowa State University - This research study demonstrated the use and pig performance using a Swedish deep-bedded group housing system for pregnant, farrowing and nursing sows and their litters.
- Sow and Litter Performance for Two Genotypes in Crated and Group Gestation Systems (pdf), Iowa State University - This research study compared the sow and litter performance for two sow genotypes housed in crated and group-housed gestation systems for two parities.
- Three-Year Summary of Performance of Finishing Pigs in Hoop Structures and Confinement During Winter and Summer (pdf), Iowa State University - The objectives of this research study were to document the performance of finishing pigs in hoops during the summer and winter, and to evaluate pig performance in hoops compared with pigs in a confinement housing system.
- Triticale Fed to Finishing Pigs in Hoop Barns (pdf), Iowa State University, 2007 - This study evaluated the feed efficiency of 40 percent and 80 percent triticale diets.
- Two-Year Summary of the Performance of Finishing Pigs and Hoop Structures and Confinement During Winter and Summer (pdf), Iowa State University - The objectives of this research study were to document the performance of finishing pigs in hoops during the summer and winter, and to evaluate pig performance in hoops compared with pigs in a confinement housing system.
- Alternative Winter Farrowing Demonstration Project: A Progress Report, Iowa State University, 2004 - Alternative farrowing systems for use during cold weather were tested.
- The Economics of Finishing Hogs in Hoop Structures and Confinement: Financial Comparison, Iowa State University, 2004 - This research document evaluates financial measurements for hogs fed during the winter and hogs fed during the summer using hoop and total confinement systems.
- Economics of Finishing Hogs in Hoop Structures and Confinement: Seasonal and Annual Comparison (pdf), Iowa State University, January 2003 - This project compares hoop facilities to confinement facilities and evaluates alternative management practices used in hoop production on groups of hogs finished from June 1998 to February 2001.
- Economics of Finishing Pigs in Hoop Structures and Confinement: A Summer Group under Different Space Restrictions (pdf), Iowa State University, January 2003 - This study compared grow-finish pigs in hoop and total confinement production facilities.
- Effects of Finishing Pigs in Hoop Structures on Swine Performance, Pork Composition and Pork Quality (pdf), Iowa State University, January 2006 - This study found the finishing environment did not affect pork quality.
- E-HUT Farrowing Plans - Northeast Iowa farmer Tom Frantzen, a member of Practical Farmers of Iowa, uses traditional farrowing practices. This site shows his design of a wooden farrowing hut.
- Fecal Fiber Content of Finishing Pigs in Hoop Structures and Confinement (pdf), Iowa State University - The objective of this research study was to determine whether the pigs housed in hoop structures consume the cornstalks that are used for bedding.
- Hogs Your Way. Choosing a Hog Production System in the Upper Midwest, University of Minnesota - This link provides information on Swedish deep-straw, hoop, pasture and confinement production systems.
- Hoop Structures, Iowa State University - This site provides information on pig performance, economics, manure management and animal environment related to the use of hoop structures.
- Iowa Hoop Structures Used for Swine: A Survey (pdf), Iowa State University - The objective of this research study was to determine an estimate of the number of hoops used for swine production in Iowa and how many producers have swine hoops.
- Internal Parasites of Pigs Housed in a Hoop Structure and Confinement (pdf), Iowa State University - The objective of this research study was to determine the infestation levels of large roundworms in pigs in confinement and hoop structures.
- On-farm Examples of Alternative Winter Farrowing Systems, Iowa State University, 2004 - Three systems are reviewed as alternatives for farrowing pigs in the winter for the natural pork market.
- Outdoor Pig Production: An Approach that Works (pdf), Iowa State University - This study outlines the management strategies, economics and pros and cons to outdoor pig production.
- Sow and Litter Performance for Individual Crate and Group Hoop Barn Gestation Housing Systems: A Progress Report (pdf), Iowa State University, 2003 - This is part of a continuing study comparing the use of individual gestation crates to group pens in deep-bedded hoop buildings. The reproductive performance of 433 litters born between March 2001 through September 2002 were analyzed.
- Sow and Litter Performance for Individual Crate and Group Hoop Barn Gestation Housing Systems: A Progress Report II (pdf), Iowa State University, 2004 - This study evaluated the effects of swine gestation housing on sow and litter performance. Two systems were evaluated, one using individual gestation crates in a confinement building and one using a group of pens in deep-bedded hoop structures.
- Sow and Litter Performance for Individual Crate and Group Hoop Barn Gestation Housing Systems: Project Summary (pdf), Iowa State University, 2007 - This 2.5-year study evaluated the effects of gestation housing on sow and litter performance. Two systems were evaluated, one using individual gestation crates in a confinement building and one using a group of pens in deep-bedded hoop structures.
Links checked April 2008.
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