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Full-Text Articles in Animal Sciences
Effect Of Dietary Crude Protein Versus Crystalline Amino Acids On Growth Performance, Serum Insulin-Like Growth Factor-I Concentration, And Igf-I Mrna Expression In Growing-Finishing Gilts, Robert Fischer, Ruth Diedrichsen, Debra Clompton, Andrea Cupp, Phillip S. Miller
Effect Of Dietary Crude Protein Versus Crystalline Amino Acids On Growth Performance, Serum Insulin-Like Growth Factor-I Concentration, And Igf-I Mrna Expression In Growing-Finishing Gilts, Robert Fischer, Ruth Diedrichsen, Debra Clompton, Andrea Cupp, Phillip S. Miller
Nebraska Swine Reports
Fifty-six crossbred gilts with an initial body weight of 73 lb were used in a 26-day growth study. The pigs were randomly allocated to one of seven dietary treatments and individually penned (8 replicates/treatment). The dietary treatments consisted of four standard corn-soybean meal diets, which were formulated by changing the corn and soybean meal (10, 14, 18, and 22% CP) ratio and three low-protein, amino acid-supplemented diets formulated to contain similar lysine, methionine, tryptophan, and threonine concentrations as the corn-soybean meal diets (10% CP + AA,14% CP + AA, and 18% CP + AA). Pig and feeder weights were recorded …
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.
Impact Of Repeated Out-Of-Feed Events And Fineness Of Grind On Grow-Finish Performance, Mike Brumm, Sheryl Colgan
Impact Of Repeated Out-Of-Feed Events And Fineness Of Grind On Grow-Finish Performance, Mike Brumm, Sheryl Colgan
Nebraska Swine Reports
Out-of-feed events are a growing problem in nursery and grow-finish facilities due to issues associated with feed delivery to bulk bins and bridging of feed in bulk bins. Reports of bridging are increasing as producers continue to reduce the fineness of grind for complete diets in order to improve feed conversion. A study was conducted to examine the effect of repeated out-of-feed events and diet particle size on barrow performance in a wean-to-finish facility beginning six weeks after weaning. Corn-soybean meal based diets were either coarse (1,266 microns) or medium ground (1,019 microns) for the duration of the experiment. Within …
Regulation Of Pituitary Gene Expression In Lines Of Swine With Different Ovulation Rates, Benjamin Bass, Rebecca Cederberg, Ginger Mills, Brett R. White
Regulation Of Pituitary Gene Expression In Lines Of Swine With Different Ovulation Rates, Benjamin Bass, Rebecca Cederberg, Ginger Mills, Brett R. White
Nebraska Swine Reports
Litter size plays a major role in the economics of pork production. Even modest increases in average litter size can have considerable effects on overall profitability. Two major components of litter size – ovulation rate and embryonic survival – have been used in a selection index project ongoing for several generations at the University of Nebraska–Lincoln (UNL). Additionally, the Chinese Meishan breed is one of the most prolific breeds, producing four to five more pigs per litter than white crossbred females. We investigated the role of the gonadotropin-releasing hormone (GnRH) receptor and gonadotropin subunit genes in determination of ovulation rate …
2006 Nebraska Swine Report, Duane Reese
2006 Nebraska Swine Report, Duane Reese
Nebraska Swine Reports
Table of Contents
Production Management
• Impact of Repeated Out-of-Feed Events and Fineness of Grind on Grow-Finish Performance
• The Case Against Evening-Up Litters Until Weaning
• Patterns of Drinking Water Use in Pork Production Facilities
Business Management
• Producers' Management
Odor Issues
• Odor Footprint Tool Progress: Regional Output Resources
Reproduction
• Freezing Swine Embryos: Do Success Rates Differ Between Breeds?
• Regulation of Pituitary Gene Expression in Lines of Swine with Different Ovulation Rates
Nutrition
• Effect of Diet and Sire Line on Crow-Finish Performance
• Effects of Feeding Increased Levels of Vitamin B12 to Weaning Pigs
• …
Effects Of Feeding Increased Levels Of Vitamin B12 To Weanling Pigs, Laura Albrecht, Robert Fischer, Phillip S. Miller
Effects Of Feeding Increased Levels Of Vitamin B12 To Weanling Pigs, Laura Albrecht, Robert Fischer, Phillip S. Miller
Nebraska Swine Reports
Increasing concentrations of vitamin B12 were fed to 144 weanling pigs (weaned 13-14 days) in two, five-week trials. Pigs were fed one of six diets: NC, negative control, basal diet without supplemented vitamin B12; or the basal diet with the inclusion of 100% (1X, 7.94 μg/lb), 200% (2X, 15.87 μg/lb), 400% (4X, 31.75 μg/lb), 800% (8X, 63.49 μg/lb), or 1,600% (16X, 126.98 μg/lb) of NRC requirements for the 11- to 22-lb pig. Each trial was divided into two phases: phase 1, day 0 - day 14 and phase 2, day 14 - day 35. Throughout phase 1, …
Patterns Of Drinking Water Use In Pork Production Facilities, Mike Brumm
Patterns Of Drinking Water Use In Pork Production Facilities, Mike Brumm
Nebraska Swine Reports
The amount of drinking water needed daily by the pig depends on numerous influences, including temperature, diet, stage of production and health. Within a 24-hour period under thermal-neutral conditions, grow-finish and gestating swine demonstrate a peak in water usage in late afternoon while lactating females consume water more consistently throughout the day. In times of heat stress, grow-finish pigs alter their water usage pattern with a peak between 8 to 9 a.m. and second peak around 5 to 8 p.m. Daily drinking water needs for pigs range from less than 0.5 gal/pig/day for newly weaned pigs to greater than 1.5 …
Producers’ Decisions, Allen Prosch
Producers’ Decisions, Allen Prosch
Nebraska Swine Reports
The business decisions pork producers make are extremely important. Decisions increase in importance at the same time they become harder to make. In business management studies, time has been devoted to learn how such decisions can be made. Less study has been expended on how producers currently make decisions. In the United States, family producers have traditionally made decisions with information they could gather independently. The ability to create decision making information is difficult. Producers need to remember the key success item — that of effective management led by sound decisions. The process of decision making involves skills and abilities …
Effect Of Low-Protein Non-Amino Acid Supplemented Diet And Ractopamine (Paylean®) On Growth Performance And Serum Urea Concentration Of Late-Finishing Pigs, Roman Moreno, Robert Fischer, Phillip S. Miller
Effect Of Low-Protein Non-Amino Acid Supplemented Diet And Ractopamine (Paylean®) On Growth Performance And Serum Urea Concentration Of Late-Finishing Pigs, Roman Moreno, Robert Fischer, Phillip S. Miller
Nebraska Swine Reports
When feeding excessive amounts of protein, the nitrogen eliminated by the pigs in swine facilities has an important impact in the environment. Therefore, it is important to define nutritional strategies that promote a more efficient use of protein. This study was conducted to evaluate the effect of a low-protein non-amino acid supplemented diet and ractopamine (Paylean®) on performance of late-finishing pigs. Thirty-six finishing barrows and gilts with an initial body weight of 153.4 lb were used in a 42- day experiment. Pigs were penned individually and had ad libitum access to feed and water. The pigs were randomly allotted to …
Effects Of Nutrition During Gilt Development On Lifetime Productivity Of Sows Of Two Prolific Maternal Lines: Growth And Puberty Characteristics Of Rep 1 Gilts, Beth Maricle, Matthew Anderson, Jeffrey Perkins, Donald Mcclure, Laura Albrecht, Jose-Roman Moreno-Salgado, Phillip S. Miller, Rodger K. Johnson
Effects Of Nutrition During Gilt Development On Lifetime Productivity Of Sows Of Two Prolific Maternal Lines: Growth And Puberty Characteristics Of Rep 1 Gilts, Beth Maricle, Matthew Anderson, Jeffrey Perkins, Donald Mcclure, Laura Albrecht, Jose-Roman Moreno-Salgado, Phillip S. Miller, Rodger K. Johnson
Nebraska Swine Reports
This report is an annual update of an ongoing experiment initiated in 2005 to investigate effects of energy restriction during gilt development on reproduction through four parities. Gilts of two genetic lines expected to differ in rate of growth are used and are developed with either ad libitum access to feed or are restricted in energy to 75% of ad libitum amounts from approximately 120 days of age to breeding. Semen of the same sires, an industry maternal line, was used to produce gilts of both lines, but their dams were from two uniquely different populations. Dams of one line …
Genes Expressed In Response To Prrsv, Derek Petry, Rodger K. Johnson, Joan Lunney
Genes Expressed In Response To Prrsv, Derek Petry, Rodger K. Johnson, Joan Lunney
Nebraska Swine Reports
Gene maps of livestock are rapidly being developed and have led to an explosion of knowledge in recent years about genes affecting economic traits. One potential application of this information that would have major economic value is in selection of livestock for resistance to disease. Even though much has been learned about Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) since it was first identified, PRRSV continues to cause significant economic losses in many herds. Traditional approaches to manage PRRSV can be effective, but may be costly and have not always resulted in permanent control. This is a disease for which …
The Case Against Evening-Up Litters Until Weaning, Duane Reese, Barbara Straw
The Case Against Evening-Up Litters Until Weaning, Duane Reese, Barbara Straw
Nebraska Swine Reports
A literature review on the effect of fostering or moving individual piglets from one litter to another after they are 24 to 48 hours of age was conducted. Late fostering disrupts nursing, increases fighting, and impairs the growth rate of adopted piglets and their littermates. Pig body weight at weaning was reduced 13 to 24% in extensively fostered litters vs. those where no piglets were fostered after 48 hours of age. No evidence was found that late fostering improves preweaning survival. For the greater good of all piglets, producers are encouraged to resist the urge to even-up litters or foster …
Odor Footprint Tool Progress: Regional Output Resources, Richard R. Stowell, Dennis D. Schulte, Richard K. Koelsch, Christopher G. Henry
Odor Footprint Tool Progress: Regional Output Resources, Richard R. Stowell, Dennis D. Schulte, Richard K. Koelsch, Christopher G. Henry
Nebraska Swine Reports
This article highlights practical applications for resources being developed using the Odor Footprint Tool and the effects of differing regional weather patterns on needed setbacks by describing resources created for the regions surrounding Norfolk and Lincoln, Neb. The Odor Footprint Tool is being developed to help people assess the odor impact of new and expanded animal production facilities on the surrounding areas and use science- based information to establish minimum setback distances. Progress continues to be made toward development of a system that can be used in the field to develop site-specific odor footprints. As an intermediate step in this …
Freezing Swine Embryos: Do Success Rates Differ Between Breeds?, Marcelo Montagner, Paulo B. D. Gonçalves, Ginger Mills, Ronald K. Christenson, Brett R. White
Freezing Swine Embryos: Do Success Rates Differ Between Breeds?, Marcelo Montagner, Paulo B. D. Gonçalves, Ginger Mills, Ronald K. Christenson, Brett R. White
Nebraska Swine Reports
Successful freezing, or cryopreservation, of embryos could greatly impact the pork industry, serving as a tool for conservation of valuable germplasm and enhancing biosecurity for transfer of genetic material. Pig embryos are very sensitive to cooling and few reports have shown successful developmental rates following freezing. The objectives of this study were to determine the efficiency of freezing pig embryos using a microdroplet vitrification method and to investigate in vitro development of embryos from Chinese Meishan and occidental white crossbred females following cryopreservation at different stages of embryonic development. Preliminary studies using the microdroplet vitrification method for cryopreservation and embryo …
Effect Of Diet And Sire Line On Grow-Finish Performance, Mike Brumm, Larry Himmelberg, Tom Rathje, John Sonderman
Effect Of Diet And Sire Line On Grow-Finish Performance, Mike Brumm, Larry Himmelberg, Tom Rathje, John Sonderman
Nebraska Swine Reports
Two experiments were conducted to determine the influence of sire line and dietary energy levels on grow-finish pig performance. In each experiment, dietary treatments were corn-soybean meal based diets with no added fat and corn-soybean meal based diets with fat added and soybean meal adjusted to maintain a similar lysine: calorie ratio. Fat additions to the added fat diets ranged from 3.75% for the 40 to 70 pound body weight period to 1.5% for pigs over 220 pounds body weight. Within each of five phases during the growing-finishing period, feed budgets were used to maintain a similar total caloric intake …