Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 21 of 21
Full-Text Articles in Animal Sciences
Phytase Sources In Pelleted Diets, Mike Brumm
Phytase Sources In Pelleted Diets, Mike Brumm
Nebraska Swine Reports
An experiment was conducted to determine whether there were differences in performance between two commercial sources of phytase when added to corn and soybean meal-based diets prior to pelleting. Pelleted diets investigated for growing-finishing barrows of high-lean-gain-potential included: 1) University of Nebraska recommended formulations; 2) diets formulated to contain 0.1% less available phosphorus than recommended; 3) diets formulated with 500 FYT/kg added phytase from Ronozyme-P®; 4) diets formulated with 750 FYT/kg added phytase from Ronozyme-P®; 5) diets formulated with 500 FTU/kg added phytase from Natuphos®; and 6) diets formulated with 750 FTU/kg added phytase from Natuphos®. Temperature of the pellets …
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 effect 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.
Effects Of Glutamine On Growth Performance And Small Intestine Villus Height In Weanling Pigs, Steven J. Kitt, Phillip S. Miller, Austin Lewis, Robert L. Fischer
Effects Of Glutamine On Growth Performance And Small Intestine Villus Height In Weanling Pigs, Steven J. Kitt, Phillip S. Miller, Austin Lewis, Robert L. Fischer
Nebraska Swine Reports
The pig’s small intestinal structure and function is altered during the days that follow weaning. As a consequence, the digestive and absorptive capacity of weanling pigs may decrease during this period, and this may be partially responsible for the post-weaning growth lag. Additionally, health benefits may be associated with an improved small intestinal structure and function during the early post-weaning period. This experiment was conducted to evaluate the effects of crystalline glutamine and (or) diet complexity on small intestine villus height and growth performance of 18-day-old pigs. During the 21-day trial, no differences in villus height were observed between pigs …
Reproductive Responses In The Ne Index Line, Rodger K. Johnson, D. B. Petry
Reproductive Responses In The Ne Index Line, Rodger K. Johnson, D. B. Petry
Nebraska Swine Reports
The NE Index Line (Line I) has been selected since 1981 only for litter size and as a pure-line has 3.5 to 4 more pigs per litter than its randomly selected control (Line C). Line I has been released to the industry where it is being used in crossbreeding applications, but whether the response realized in the pure-line is expressed in crossbreeding applications is not known. The objective of this experiment was to estimate responses in reproduction in Line I in pure-line sows, in pure-line sows mated to produce F1 litters and in F1 sows mated to produce …
2002 Nebraska Swine Report, Duane Reese
2002 Nebraska Swine Report, Duane Reese
Nebraska Swine Reports
Nutrition
Comparison of Swine Performance When Fed Diets Containing Roundup Ready® Corn, Parental Line Corn, or Two Commercial Corns
Niacin and Vitamin B12 Requirements of Weanling Pigs
Phytase Sources in Pelleted Diets
Managing Swine Dietary Phosphorus to Meet Manure Management Goals
Update on the Economics of Feeding Ractopamine (PayleanTM) to Finishing Pigs
Defining the Optimal Feed Budget System for Terminal-Crossed, Growing-Finishing Barrows
Effects of Glutamine on Growth Performance and Small Intestine Villus Height in Weanling Pigs
Influence of Linoleic Acid Isomers on Body Fat
Dietary Amino Acid Utilization for Body Protein Deposition-Current and Future Research
Genetics
Reproductive Responses in the …
Competition — It’S Not Just “Cost” Of Production, Allen Prosch
Competition — It’S Not Just “Cost” Of Production, Allen Prosch
Nebraska Swine Reports
Pork producers are faced with numerous competitive challenges. Having a higher cost of production than other pork producers has always been a reason to exit the pork industry. Even when their cost of production is competitive, producers still choose to exit the industry. Hog prices, corn prices and the hog/corn ratio from 1970 to 2000 were examined in relation to the change in the number of pork producers in Nebraska to identify the degree of influence that each had on producer’s decisions to enter or exit pork production. The annual average price of market hogs per cwt and the price …
Niacin And Vitamin B12 Requirements Of Weanling Pigs, Sara S. Blodgett, Phillip S. Miller, Austin Lewis, Robert Fischer
Niacin And Vitamin B12 Requirements Of Weanling Pigs, Sara S. Blodgett, Phillip S. Miller, Austin Lewis, Robert Fischer
Nebraska Swine Reports
An experiment was conducted to assess the responsiveness of weanling pigs to increased dietary concentrations of niacin and vitamin B12. The purpose of the experiment was to determine if the niacin and vitamin B12 requirements of nursery pigs are greater than the NRC (1998) recommendations for 11 to 22 lb pigs. Pigs (initial weight 9.4 lb) were fed one of four diets for a total of 35 days: 1) Negative control, common nursery diet with no added niacin or vitamin B12; 2) Niacin, common nursery diet with 22.7 µg/lb added niacin; 3) B12, …
Managing Swine Dietary Phosphorus To Meet Manure Management Goals, Mike Brumm, Charles A. Shapiro, William L. Kranz
Managing Swine Dietary Phosphorus To Meet Manure Management Goals, Mike Brumm, Charles A. Shapiro, William L. Kranz
Nebraska Swine Reports
A demonstration was carried out for 15 months at a 1,200-head growing- finishing facility in Holt County, Neb. The purpose was to document the impact of diet formulation on phosphorus excretion and the associated land area needed to utilize the phosphorus in the accumulated manure. The demonstration facility had four 300-head rooms. Prior to the demonstration, pigs in all rooms were fed diets formulated to contain 0.55-0.57% total phosphorus for all phases of growth. For the demonstration, two rooms were fed diets formulated to the University of Nebraska recommended levels for available phosphorus. The other two rooms were fed diets …
Dietary Amino Acid Utilization For Body Protein Deposition — Current And Future Research, Janeth J. Colina, Austin Lewis, Phillip S. Miller
Dietary Amino Acid Utilization For Body Protein Deposition — Current And Future Research, Janeth J. Colina, Austin Lewis, Phillip S. Miller
Nebraska Swine Reports
In modern pork production it is important to maximize the animal’s potential for daily lean gain by increasing the body protein deposition with as little wastage of the ingested amino acids as possible. Therefore, it is important to maximize the efficiency with which dietary amino acids are used for protein deposition or lean gain. This efficiency is measured by using nitrogen balance studies or comparative slaughter procedures. Supplementing swine diets with crystalline amino acids and replacing part of the dietary protein can reduce diet cost and will also reduce the amount of nitrogen excreted in manure. However, it has been …
Sorting And Mixing Effects In A Wean-To-Finish Facility, Mike Brumm
Sorting And Mixing Effects In A Wean-To-Finish Facility, Mike Brumm
Nebraska Swine Reports
An experiment was conducted to evaluate whether removing and mixing lightweight pigs in a wean-to-finish facility resulted in improved pig performance to slaughter compared to never removing pigs from a pen from weaning to slaughter. Two populations of pigs were compared. The removed and mixed population consisted of pens comprised of 1) 20 pigs per pen with the five lightest pigs removed three weeks after weaning and 2) 15 pigs per pen with the pen comprised of the five lightest pigs from three of the 20 pig pens. The unsorted population consisted of 15 pigs per pen from weaning to …
Influence Of Linoleic Acid Isomers On Body Fat, Kim Hargrave, Kristin Nollette, Merlyn K. Nielsen, Jess L. Miner
Influence Of Linoleic Acid Isomers On Body Fat, Kim Hargrave, Kristin Nollette, Merlyn K. Nielsen, Jess L. Miner
Nebraska Swine Reports
In two studies, mice were fed diets containing either individual conjugated linoleic acid (CLA) isomers or a mixture of isomers in the presence or absence of dietary essential fatty acids. Mice fed the C18:2 Δ10,12 CLA isomer lost as much body fat as mice fed a mixture of isomers. This effect was not observed when the mice were fed the C18:2 Δ9,11 isomer or when feed intake was restricted. The loss of body fat was much greater in mice consuming an essential fatty acid deficient diet versus a control diet. This supports our hypothesis that for CLA to deplete body …
Comparison Of Swine Performance When Fed Diets Containing Roundup Ready® Corn, Parental Line Corn, Or Two Commercial Corns, Robert L. Fischer, Austin Lewis, Phillip S. Miller
Comparison Of Swine Performance When Fed Diets Containing Roundup Ready® Corn, Parental Line Corn, Or Two Commercial Corns, Robert L. Fischer, Austin Lewis, Phillip S. Miller
Nebraska Swine Reports
This experiment was conducted to evaluate growth performance and carcass quality measurements in growing-finishing pigs fed diets containing either Roundup Ready® corn expressing the CP4 EPSPS protein, the parental control corn, or two commercial sources of nongenetically modified corn. The experiment used 72 barrows and 72 gilts with an initial body weight of 50 lb. The pigs were allotted to a randomized complete block design with a 2 x 4 factorial arrangement of treatments (two sexes x four corn hybrids). The experiment continued until the average body weight was 255 lb, at which time all pigs were slaughtered. Realtime ultrasound …
Factors Affecting Bacon Color And Composition, J. E. Mann, Roger W. Mandigo, Dennis E. Burson, R. Garza
Factors Affecting Bacon Color And Composition, J. E. Mann, Roger W. Mandigo, Dennis E. Burson, R. Garza
Nebraska Swine Reports
The objective of this study was to determine the effects of genetic line, diet, sex, slaughter weight and location within the slab on the proximate composition and color of bacon lean and fat. Bacon slabs manufactured from bellies of 756 barrows and gilts of six different genetic lines equally distributed among four feeding regimes, with differing lysine levels, and three weight groups and processed into sliced retail bacon (nine slices/inch) were used. Sliced bacon slabs were divided into five equally sized sections and two bacon slices were taken from the anterior end of each for machine vision and proximate analyses. …
Effectiveness Of Pork Quality Assurance Training For Youth, Rosemarie Nold
Effectiveness Of Pork Quality Assurance Training For Youth, Rosemarie Nold
Nebraska Swine Reports
Over 3,500 youth in Nebraska were trained and certified in Pork Quality Assurance (PQA) in 1999. Quality assurance training had an impact on the youths’ opinions about quality assurance and consumers and on the youths’ knowledge of quality assurance practices. Emphasis on character development and decision-making skills translated into positive responses about the responsibilities of a livestock producer to animals and consumers. While most youth understood at least some of their responsibilities prior to completing the training, the quality assurance training served to reinforce the understanding of those youth and also to help all youth recognize the breadth of the …
Economic Analysis Of The Selection Response In The Ne Index Line, D. B. Petry, B. P. Mcallister, Rodger K. Johnson
Economic Analysis Of The Selection Response In The Ne Index Line, D. B. Petry, B. P. Mcallister, Rodger K. Johnson
Nebraska Swine Reports
The objective was to estimate economic effects of 19 generations of selection for increased litter size in the NE Index line. Using realized biological data, 1,250-sow enterprises based on Index line and Control line females were simulated. Each system was closed to introduction of females and included pureline females mated to produce replacement pureline and F1 gilts, and F1 females mated to terminal cross boars to produce market progeny. Costs of production and income statements were produced using the reproductive, growth and carcass data from the NE Index (I) and Control (C) lines reported in the two preceding …
Applicability Of High-Rise™ Hog Housing For Finishing Operations, Richard R. Stowell
Applicability Of High-Rise™ Hog Housing For Finishing Operations, Richard R. Stowell
Nebraska Swine Reports
The design of High-Rise™ swine facilities allows the generation of a solid, manure-laden material from hogs raised in confinement housing with slatted floors. The volume of manure that must be handled annually can be reduced through continuous moisture loss that takes place within the system’s drying bed and recycling of bed material. Recycling typically involves mixing material twice a year — at the end of finishing periods. Moisture contents of twice-recycled manure-laden bed material ranged between 55-65% with continuous aeration for three years of production. This moisture range makes the material acceptable directly as feedstock for composting. Ammonia emissions should …
Defining The Optimal Feed Budget System For Terminal-Crossed, Growing-Finishing Barrows, Robert Fischer, Phillip S. Miller, Austin Lewis, Darren J. Critser
Defining The Optimal Feed Budget System For Terminal-Crossed, Growing-Finishing Barrows, Robert Fischer, Phillip S. Miller, Austin Lewis, Darren J. Critser
Nebraska Swine Reports
This experiment was conducted to evaluate growth performance and carcass quality measurements in growing-finishing barrows assigned to different feed budget systems. Forty-eight barrows with an initial body weight of 47.3 lb were randomly allotted to one of three different feed budget systems. The experiment was continued until the average body weight was 270 lb, at which time all pigs were slaughtered. Growth performance and real-time ultrasound measurements were taken biweekly, except for the final period, which was 24 days. Carcass tenth-rib backfat and longissimus muscle area measurements were made 24 hours postmortem. Overall, average daily feed intake (ADFI) was affected …
Economic Analyses Of Feeding 18 G Per Ton Paylean® To Crosses Of The Ne Index Line, Rodger K. Johnson, Phillip S. Miller, D. B. Petry, R. F. Fischer
Economic Analyses Of Feeding 18 G Per Ton Paylean® To Crosses Of The Ne Index Line, Rodger K. Johnson, Phillip S. Miller, D. B. Petry, R. F. Fischer
Nebraska Swine Reports
Economic returns per pig for F1 and terminal cross barrows and gilts of the NE Index line when fed a diet with or without PAYLEAN® at 18 g per ton for 28 d before slaughter were compared. Although not significant, terminal cross pigs with 25% Line I genes were more profitable than F1 pigs with 50% Line I genes and gilts were more profitable than barrows. Several scenarios were modeled to evaluate the economic returns from feeding PAYLEAN®. Increased profits were similar across lines and sexes but varied depending on whether intransit death losses were considered treatment effects. …
Paylean® Improves Growth And Carcass Merit Of Pigs With 25% And 50% Nebraska Index Line Genes, Rodger K. Johnson, D. Petry, Phillip S. Miller, R. Fisher
Paylean® Improves Growth And Carcass Merit Of Pigs With 25% And 50% Nebraska Index Line Genes, Rodger K. Johnson, D. Petry, Phillip S. Miller, R. Fisher
Nebraska Swine Reports
The Nebraska Index Line excels in reproduction and is being used in industry breeding programs. However, because it has been selected only for litter size since 1981, growth and carcass merit of pure-line pigs are below industry standards. The objectives of this experiment were 1) to compare growth and carcass traits of Index cross pigs with either 50% or 25% Line I genes in a crossbreeding system typical of how the line is used in the industry and 2) to determine the effects of feeding 18 g PAYLEAN® per ton during the last 28 days of the feeding period on …
Growth And Carcass Responses In The Ne Index Line Estimated In Pure-Line And Crossbred Litters, D. B. Petry, J. W. Holl, Rodger K. Johnson
Growth And Carcass Responses In The Ne Index Line Estimated In Pure-Line And Crossbred Litters, D. B. Petry, J. W. Holl, Rodger K. Johnson
Nebraska Swine Reports
The objective was to estimate responses in growth and carcass traits in the NE Index line (I) that was selected 19 generations for increased litter size. Responses in pure-line, F1 and 3-way cross litters were compared. In Exp 1, 694 gilts that were retained for breeding, including 448 I and control (C) and 246 F1 I and C by Danbred™ Landrace (L), were evaluated. Direct genetic effects of I and C did not differ for backfat or days to 230 lb; however, I had 0.24 in2 smaller longissimus muscle area (LMA) than C (P < 0.05). F1 gilts had …
Update On The Economics Of Feeding Ractopamine (Paylean™) To Finishing Pigs, Duane Reese, Larry L. Bitney
Update On The Economics Of Feeding Ractopamine (Paylean™) To Finishing Pigs, Duane Reese, Larry L. Bitney
Nebraska Swine Reports
Ractopamine is a feed additive that improves feed efficiency, daily gain, and carcass merit in finishing pigs. An economic feasibility analysis on the feeding of 4.5 and 9.0 g/ton ractopamine to finishing pigs fed a 1% lysine, corn-soybean meal diet for an average of 29 days before slaughter was conducted. The analysis was performed in two stages: 1) an economic benefit for ractopamine was calculated from revenues due to improved feed efficiency, daily gain and carcass yield (dressing percent), and 2) the amount of a carcass lean premium needed per pig to recover the added cost of feeding ractopamine was …