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A Review Of The Ammonia Issue And Pork Production, Janeth Colina, Austin Lewis, Phillip S. Miller
A Review Of The Ammonia Issue And Pork Production, Janeth Colina, Austin Lewis, Phillip S. Miller
Nebraska Swine Reports
During the last few decades, an increasing interest in, and respect for, the environment has arisen. This has consequences for livestock production. Air can become polluted by noxious odors from animal husbandry. A particular example is odor emission from pig buildings, because in several parts of the world pig production has become highly specialized, industrialized and concentrated geographically. Air quality in pig facilities, as it influences the well-being of animals and workers, has become a major concern for pork producers. Odors emanating from pig slurry are an increasing source of environmental pollution as well as a nuisance to the human …
The Use Of Plasma Urea As An Indicator Of Protein Status In Growing-Finishing Pigs, Robert Fischer, Phillip S. Miller, Austin J. Lewis
The Use Of Plasma Urea As An Indicator Of Protein Status In Growing-Finishing Pigs, Robert Fischer, Phillip S. Miller, Austin J. Lewis
Nebraska Swine Reports
An experiment is being conducted on commercial swine operations to determine if plasma urea concentration can be used as an indicator of protein status in growing-finishing pigs. Swine producers in Eastern Nebraska are being selected to participate in this on-farm study. The experiment includes the completion of a 30-question survey and an on-farm visit for the collection of blood and feed samples. The survey includes questions about genetics, nutrition, housing and health. Preliminary results suggest that crude protein is overfed in most finishing diets. Gilts consistently have lower plasma urea concentrations than barrows when gilts and barrows are fed the …
The Investigation Of Betaine As A Growth Promotor And/Or Carcass Modifier And The Efficacy Of Betaine To Replace Methionine In Finishing Diets, Steven J. Kitt, Phillip S. Miller, Austin J. Lewis, Robert Fischer
The Investigation Of Betaine As A Growth Promotor And/Or Carcass Modifier And The Efficacy Of Betaine To Replace Methionine In Finishing Diets, Steven J. Kitt, Phillip S. Miller, Austin J. Lewis, Robert Fischer
Nebraska Swine Reports
Dietary betaine’s effect on growth performance and carcass composition of finishing barrows was investigated. Two experiments were conducted to assess whether betaine improves growth and/or carcass characteristics. In the first experiment, barrows were fed either a control diet or a diet supplemented with betaine and were either crowded or not crowded. Shoulder weight was increased in pigs fed betaine. Generally, betaine had no effect on growth performance and carcass characteristics. The second experiment attempted to assess whether betaine can replace methionine in finishing diets. Betaine tended to be associated with increased fat-free lean gain. This experiment failed to show that …
District Court Rules In Progress Pig Case, J. David Aiken
District Court Rules In Progress Pig Case, J. David Aiken
Nebraska Swine Reports
Article 8 §12 of the Nebraska Constitution (popularly referred to as Initiative 300) establishes several requirements for corporations to legally qualify as family farm or ranch corporations in Nebraska. Under one requirement, a majority of the family farm or ranch corporation’s shareholders must be family members, “at least one of whom is a person residing on or actively engaged in the day to day labor and management of the farm or ranch.” On Sept. 16, 1998, Otoe County District Court Judge Ronald Reagan ruled in Hall v. Progress Pig that where no family member resides on the farm or ranch, …
2000 Nebraska Swine Report
Nebraska Swine Reports
Articles:
Pubertal Response in Gilts to Type and Frequency of Boar Exposure and as Influenced by Genetic Line and Age at Initiation of Boar Contact
Candidate Reproductive Genes Do Not Explain Responses in Lines Selected for Ovulation Rate and Litter Size
The Effect of Oxytocin at the Time of Insemination on Reproductive Performance — A Review
Extruded-Expelled Soybean Meal for Pigs
The Effects of Dietary Feather Meal Concentration and Space Allocation on Performance and Carcass Characteristics of Barrows
A Review of the Ammonia Issue and Pork Production
Nitrogen Balance and Growth Trials With Pigs Fed Low-Crude Protein, Amino Acid-Supplemented Diets …
Nitrogen Balance And Growth Trials With Pigs Fed Low-Crude Protein, Amino Acid-Supplemented Diets, Jose Figueroa, Austin Lewis, Phillip S. Miller
Nitrogen Balance And Growth Trials With Pigs Fed Low-Crude Protein, Amino Acid-Supplemented Diets, Jose Figueroa, Austin Lewis, Phillip S. Miller
Nebraska Swine Reports
To find out why low-crude protein, amino acid-supplemented diets often reduce growing pig performance, we conducted two experiments. In the first experiment, a nitrogen balance trial, three standard corn-soybean meal diets and three corresponding low-crude protein, amino acid-supplemented diets were used. The diets were: 14% CP and 10% CP + AA, 16% CP and 12% CP + AA, and 18% CP and 14% CP + AA, fed to 12 (90 lb) gilts in three periods of 7 d each. The amino acids lysine, tryptophan, threonine and methionine were added to low-crude protein diets to reach the same total amount as …
The Effects Of Compensatory Growth And Form Of Amino Acid Supply On Plasma Urea Concentration, Organ Weights And Carcass Characteristics In Gilts, Robert Fischer, Phillip S. Miller, Austin Lewis
The Effects Of Compensatory Growth And Form Of Amino Acid Supply On Plasma Urea Concentration, Organ Weights And Carcass Characteristics In Gilts, Robert Fischer, Phillip S. Miller, Austin Lewis
Nebraska Swine Reports
An experiment was conducted to examine the effects of compensatory growth and amino acid supply on plasma urea concentration, organ weights and carcass characteristics. Gilts were fed either a corn-soybean meal diet or a corn-soybean meal diet supplemented with crystalline lysine. Pigs were randomly allotted to either a 21-day ad libitum eating period or a 42-day restricted-realimentated feeding period. The restricted-realimentated feeding period consisted of a 21-day restriction period and a 21-day ad libitum eating period (realimentation). During the restriction period, pigs were fed to maintain body weight. During week one of the ad libitum period, gilts in the restricted-realimentated …
The Effect Of Oxytocin At The Time Of Insemination On Reproductive Performance — A Review, Donald G. Levis
The Effect Of Oxytocin At The Time Of Insemination On Reproductive Performance — A Review, Donald G. Levis
Nebraska Swine Reports
Oxytocin is released from the brain of the sow at the time of mating in response to stimulation by the boar. It is assumed that it enhances sperm transport to the oviduct. Several investigators have studied whether injecting oxytocin into semen before artificial insemination improves farrowing rate and litter size. The conclusions from review of these studies are: 1) Adding 4 to 5 IU’s of oxytocin to a dose of semen improves farrowing rate and litter size; 2) Use of oxytocin-treated semen is more effective in multiparous sows than gilts; 3) During the summer months, oxytocin-treated semen significantly increased farrowing …
Acylation Stimulating Protein: A Potential Regulator Of Fat Synthesis, Jess L. Miner, Carin Ramsel, Sheila Jacobi
Acylation Stimulating Protein: A Potential Regulator Of Fat Synthesis, Jess L. Miner, Carin Ramsel, Sheila Jacobi
Nebraska Swine Reports
The long term goal of this project is to understand the molecular mechanisms controlling fat synthesis. These experiments indicate that acylation stimulating protein (ASP) can stimulate the incorporation of fatty acids into lipid in cultured adipose tissue. This finding justifies a future effort to determine if manipulation of ASP can modify fat deposition.
Extruded-Expelled Soybean Meal For Pigs, Duane Reese, Larry L. Bitney
Extruded-Expelled Soybean Meal For Pigs, Duane Reese, Larry L. Bitney
Nebraska Swine Reports
A review of the value of extruded-expelled soybean meal (ESBM) for pigs was conducted. Results from two studies where the growth performance of weanling pig was evaluated suggested that the feeding value of ESBM relative to solvent-extracted soybean meal (SSBM) is not consistent. The economic value of ESBM relative to SSBM was estimated from pig performance data and the metabolizable energy content of corn, ESBM, and SSBM. When ESBM is used to replace 44% CP SSBM in growing-finishing pig diets, it is worth 0 to $36.29 per ton more than 44% CP SSBM, assuming 44% CP SSBM and corn cost …
The Effects Of Dietary Feather Meal Concentration And Space Allocation On Performance And Carcass Characteristics Of Barrows, Kuo-Wei Ssu, Mike Brumm, Phillip S. Miller, Robert L. Fischer
The Effects Of Dietary Feather Meal Concentration And Space Allocation On Performance And Carcass Characteristics Of Barrows, Kuo-Wei Ssu, Mike Brumm, Phillip S. Miller, Robert L. Fischer
Nebraska Swine Reports
An experiment was conducted to determine the effect of dietary feather meal (FM, 0 and 20% ) and space allocation (8.3 [UC] and 6.2 [C] ft2/ pig) on growth and carcass characteristics of barrows. Control barrows (0% FM and UC) had 10% higher ADFI than gilts (0 % FM and UC), but only 2.6% greater ADG. Crowded barrows fed 20% FM diet from 165 lb to slaughter had decreased ADG and ADFI compared to control barrows. Crowded barrows fed a diet with no FM had a 4.9% reduction in ADFI compared to control barrows, and crowded barrows fed …
Candidate Reproductive Genes Do Not Explain Responses In Lines Selected For Ovulation Rate And Litter Size, Regina Linville, Daniel Pomp, Rodger K. Johnson
Candidate Reproductive Genes Do Not Explain Responses In Lines Selected For Ovulation Rate And Litter Size, Regina Linville, Daniel Pomp, Rodger K. Johnson
Nebraska Swine Reports
Molecular technologies have developed rapidly and provide methods to select directly for genes controlling economic traits. The swine genetic linkage map is the most highly developed of all livestock species. Positions on the chromosomes of several genes are known. Some of these genes have been shown to have direct effects on economic traits. Selection lines that differ from the control line by as much as 50% in ovulation rate and litter size exist at Nebraska. This experiment evaluated whether six specific genes that produce important proteins in reproductive processes explained responses in ovulation rate and litter size in two of …
Nebraska Competitive Livestock Marketing Act, J. David Aiken
Nebraska Competitive Livestock Marketing Act, J. David Aiken
Nebraska Swine Reports
LB835, the Nebraska Competitive Livestock Marketing Act, was adopted in 1999. The act regulates marketing and livestock ownership for packers slaughtering 150,000 or more animal units per year (150,000 steers, 350,000 calves up to 450 pounds, or 750,000 hogs). The act regulates packer livestock ownership, hog and cattle purchases and contracts, and livestock price reporting. The restrictions differ between hog and cattle purchases, but the price-reporting requirements are the same in both cases. Price-reporting requirements go into effect Feb. 15, 2000. There is some disagreement regarding when other provisions of the act take effect. LB835 took effect May 27, 1999. …
Effect Of Wean-To-Finish Management On Pig Performance, Mike Brumm, Angela K. Baysinger, Robert W. Wills, Edgar T. Clemens, Robert C. Thaler
Effect Of Wean-To-Finish Management On Pig Performance, Mike Brumm, Angela K. Baysinger, Robert W. Wills, Edgar T. Clemens, Robert C. Thaler
Nebraska Swine Reports
An experiment consisting of three trials was conducted to determine the effect of wean-to-finish management systems on pig performance. Treatments consisted of: 1) wean-to-finish single stock (WF) at 7.5 ft2/pig from weaning (17 day mean age) to slaughter in a fully slatted finishing facility; 2) double stock (DS) at 3.75 ft2/pig for eight weeks following weaning and then split into two pens at 7.5 ft2/pig each; and 3) nursery (NF) at 3.75 ft2/ pig for eight weeks in a conventional nursery followed by movement to the finisher and stocked at 7.5 ft …
Explanation Of Statistics Used In This Report
Explanation Of Statistics Used In This Report
Nebraska Swine Reports
Pigs treated alike vary in performance, due to their different genetic makeup and to environmental effects we cannot completely control. When a group of pigs is randomly allotted to treatments it is nearly impossible to get an “equal” group of pigs on each treatment. The natural variability among pigs and the number of pigs per treatment determine the expected variation among treatment groups due to random sampling.
Duration Of Prrs Virus Infections And Proportion Of Persistently Infected Pigs, R. W. Wills, Alan R. Doster, J. Galeota, J.-H. Sur, Fernando A. Osorio
Duration Of Prrs Virus Infections And Proportion Of Persistently Infected Pigs, R. W. Wills, Alan R. Doster, J. Galeota, J.-H. Sur, Fernando A. Osorio
Nebraska Swine Reports
The objective of this study was to more fully characterize persistent PRRSV infections in swine. Twenty-eight 35-day-old segregated-early-weaned pigs were inoculated intranasally with PRRSV. Serum and tonsil biopsy samples were collected on days 0, 7, 14, 28, and then about monthly thereafter until day 251 post inoculation (PI). Virus was isolated from serum and tonsil biopsy samples through days 28 and 56 PI, respectively. Viral RNA was detected in serum and tonsil biopsy samples by RT-PCR through day 251 PI, although no positive serum samples were detected on days 84-196 PI. Greater proportions of day 28 and 56 PI serum …
Pubertal Response In Gilts To Type And Frequency Of Boar Exposure And As Influenced By Genetic Line And Age At Initiation Of Boar Contact, Dwane R. Zimmerman, Thomas Mcgargill, Dan Cheleen
Pubertal Response In Gilts To Type And Frequency Of Boar Exposure And As Influenced By Genetic Line And Age At Initiation Of Boar Contact, Dwane R. Zimmerman, Thomas Mcgargill, Dan Cheleen
Nebraska Swine Reports
The effectiveness of twice daily (2x) vs once daily (1x) boar exposure (BE) and the possible interaction of frequency of BE with type of BE (physical, PBE vs fence-line, FBE) was evaluated in two genetic lines of the Gene Pool population (AP, selected for early age at puberty and RLS, composite of genetic lines selected for ovulation rate or litter size) differing in average pubertal age and in RLS gilts at two different ages (130 and 154 d). Gilts from the RLS line (n=128) were allotted randomly, within litter, to once or twice daily BE, PBE or FBE and to …