Open Access. Powered by Scholars. Published by Universities.®
- Discipline
- Keyword
-
- Distillers’ grains (3)
- Beef (2)
- Beef cattle (2)
- Gluten feed (2)
- Tenderness (2)
-
- Turkey (2)
- Aging (1)
- Alternative curing (1)
- Antioxidant (1)
- Beef cow (1)
- Beef cow/calf (1)
- Beef heifer (1)
- Byproducts (1)
- Cattle (1)
- Color (1)
- Conception (1)
- Confinement (1)
- Corn (1)
- Corn residue (1)
- Dam parity (1)
- Diet (1)
- Digestibility (1)
- Feed efficiency (1)
- Feed intake (1)
- Fiber (1)
- Finishing cattle (1)
- Flavor (1)
- Forages (1)
- Gastrointestinal microbiota (1)
- Gonads (1)
Articles 1 - 15 of 15
Full-Text Articles in Other Animal Sciences
Production And Economic Efficiencies Of Intensified Cow–Calf Production Management Systems, Jason M. Warner
Production And Economic Efficiencies Of Intensified Cow–Calf Production Management Systems, Jason M. Warner
Department of Animal Science: Dissertations, Theses, and Student Research
The objective of four experiments conducted was to evaluate production and economic efficiencies of intensified cow-calf production management systems. The first experiment tested the effect of calf age at weaning on cow and calf performance and feed utilization at 2 locations. Body weight change from early to conventional weaning time was greater for early-weaned cows. Cow BCS and conception rates were not impacted by weaning. Calf BW at conventional weaning time was greater for conventionally-weaned calves than early-weaned calves at ARDC, but greater for early-weaned than conventionally-weaned calves at PHREC. Calf ADG per unit of total feed energy intake was …
Effect Of A Trace Mineral Injection On Beef Cattle Performance, Carmen J. Brasche
Effect Of A Trace Mineral Injection On Beef Cattle Performance, Carmen J. Brasche
Department of Animal Science: Dissertations, Theses, and Student Research
Adequate trace mineral status is important in beef cow/calf and replacement heifer systems because trace minerals play vital roles in reproduction, immunity and growth. Many experiments have investigated the use of a trace mineral injection containing Cu, Mn, Se and Zn (TMI) on growth and immunity of beef cattle. However, very few have investigated TMI use on reproductive performance. Therefore, five experiments, a two year cow/calf experiment, and four replacement heifer experiments were designed to investigate the use of a TMI on reproductive performance of cows and heifers, calf growth and trace mineral status of cows, heifers, and calves. The …
Effects Of Conventional And Alternative Curing Methods On Processed Turkey Quality Traits, Amy Lynn Redfield
Effects Of Conventional And Alternative Curing Methods On Processed Turkey Quality Traits, Amy Lynn Redfield
Department of Animal Science: Dissertations, Theses, and Student Research
This study compared physicochemical and sensory qualities of deli-style turkey breast produced pre-converted celery juice powder (CP; for alternative curing) or sodium nitrite (SN; for conventional curing). Formulas were designed to include 0, 50, 100, 150, and 200 ppm ingoing sodium nitrite or the equivalent from CP or SN, and 3 replicates of products were manufactured. Turkey and curing brines were tumbled, stuffed, and cooked to an internal temperature of 73.9oC. Products were stabilized and sliced into 12 mm slices (physicochemical trait analysis) and 2 mm slices (sensory trait analysis). Physicochemical traits measured only on d 0 were …
Nutrient, Tenderness, And Strip Loin Differences Of Beef From Cattle Due To Mutation Of The Myostatin Gene, Michelle Elaine Semler
Nutrient, Tenderness, And Strip Loin Differences Of Beef From Cattle Due To Mutation Of The Myostatin Gene, Michelle Elaine Semler
Department of Animal Science: Dissertations, Theses, and Student Research
The objectives of this study was to determine tenderness, nutrient, and musculature differences of loins from cattle with variation of myostatin gene. Steers (n = 21, 22, and 16) and heifers (n = 19, 20, and 20) were genotyped as homozygous (MM; active myostatin gene), heterozygous (Mm; partially recessive myostatin) or homozygous (mm; recessive inactive myostatin), respectively. At 3 d post mortem Longissimus dorsi (LD) and Semitendinosus (ST) were collected. Loins were cut into 2.5 cm thick steaks evaluated for: total number steaks, total number vein steaks, total number non-vein steaks, and individual steak weight. Nutrient analysis steaks were cut …
Production Management Factors Affecting Inherent Beef Flavor: The Role Of Post-Weaning Forage, Energy Supplementation, Finishing Diets, And Aging Periods, Kimberly A. Varnold
Production Management Factors Affecting Inherent Beef Flavor: The Role Of Post-Weaning Forage, Energy Supplementation, Finishing Diets, And Aging Periods, Kimberly A. Varnold
Department of Animal Science: Dissertations, Theses, and Student Research
Projects were conducted to determine effects of diet and aging periods on inherent beef flavor characteristics by relating biochemical constituents of meat, consumer acceptability, and lexicon flavor notes of two different muscles. Prediction equations were also created. Warm-season grasses caused increased concentrations of moisture, heme iron, and zinc in L. dorsi steaks. Aging 28 d instead of 7 d caused increased pH, carbohydrate, and heme and non-heme iron concentrations in B. femoris steaks. Warm-season grasses caused decreased concentrations in a majority of fatty acids, specifically when supplementation was not provided. Few differences were observed with cool-season grasses. Provision of wet …
The Effect Of Dam Parity On Progeny Growth Performance, Passive Immunity, And Gastrointestinal Microbiota, Erin E. Hinkle
The Effect Of Dam Parity On Progeny Growth Performance, Passive Immunity, And Gastrointestinal Microbiota, Erin E. Hinkle
Department of Animal Science: Dissertations, Theses, and Student Research
Previous research has shown that parity (P) 4 progeny have greater weaning weights and decreased microbial diversity compared to P1 progeny. Three experiments were conducted to evaluate litter performance, passive immunity, and fecal microbiota among P1 and P3 dams and their progeny. In experiment 1, 56 P1 and 49 P3 dams and their progeny’s litter and growth performance, immunoglobulin (IgG and IgA) concentrations, and gut microbiota were evaluated. In experiment 2, 48 pigs per P were selected to determine growth performance, immunoglobulin (IgG and IgA) concentrations, and gut microbiota. In experiment 3, 8 dams per P were selected. At birth, …
Hepatic Mitochondrial Efficiency In Lines Of Mice Differing In Feed Intake, Thomas Murphy
Hepatic Mitochondrial Efficiency In Lines Of Mice Differing In Feed Intake, Thomas Murphy
Department of Animal Science: Dissertations, Theses, and Student Research
Selection was practiced for high (MH) and low (ML) heat loss using direct calorimetry to create lines of mice differing in feed intake per unit BW (FI/BW). Selection occurred for both criteria in each of 3 replications (R); an unselected control (MC) was also maintained in each replicate. A total of 25 generations of selection was practiced; the 9 lines are presently maintained without selection. As a percentage of MC, mice of MH and ML lines differed in heat loss and FI/BW by 56 and 34%, respectively, when selection ceased. The 218 male mice measured in the present study came …
Mechanism And Control Of Beef Toughening During Retail Display In High Oxygen Modified Atmosphere Packages, Lasika S. Senaratne
Mechanism And Control Of Beef Toughening During Retail Display In High Oxygen Modified Atmosphere Packages, Lasika S. Senaratne
Department of Animal Science: Dissertations, Theses, and Student Research
This research was conducted to elucidate the mechanism and factors (diet, aging time, antioxidant level, and retail display time) affecting beef toughening in retail display under high oxygen atmosphere packages (HiOx-MAP; 80% O2 and 20% CO2). In the first study, effects of HiOx-MAP on color and lipid stability of beef m. longissimus lumborum steaks from yearlings fed corn or 30% wet distillers grains plus soluble (WDGS) diets supplemented with (150 mg/kg) or without (0 mg/kg) AGRADO-PLUS (AG) antioxidants were studied. Steak color-shelf life was extended (P < 0.0001) by HiOx-MAP compared to oxygen permeable film packages (PVC-OW). Steaks from corn+AG-supplemented cattle had (P ≤ 0.05) less discoloration and lower lipid oxidation levels …
Utilization Of Corn Residue, Winter Range, Or Dry Lot In Beef Heifer Development Systems, Stetson P. Weber
Utilization Of Corn Residue, Winter Range, Or Dry Lot In Beef Heifer Development Systems, Stetson P. Weber
Department of Animal Science: Dissertations, Theses, and Student Research
Post-weaning heifer development systems that maximize reproductive efficiency and reduce input costs associated with feed is beneficial for cow/calf producers. Two research experiments were conducted to evaluate the effect of post-weaning development systems in beef heifers. In Exp. 1 heifers were developed on corn residue (CR), or dry lot (DL). Heifers developed in DL had increased BW after winter treatment until breeding. Both heifer groups were similar in percent of heifers cycling, AI conception, AI pregnancy, and final pregnancy diagnosis. A subset of AI pregnant heifers were blocked by weight and stratified by winter development system and individually fed using …
Animal Performance And Diet Quality While Grazing Corn Residue, Jennifer A. Gigax
Animal Performance And Diet Quality While Grazing Corn Residue, Jennifer A. Gigax
Department of Animal Science: Dissertations, Theses, and Student Research
Grazing cattle on corn residue as a winter feed source has become an integral part of many Nebraska producers’ management plans. Utilizing corn residues extends the grazing season and is often more economical than grazing winter range or dry lot situations. Corn residue is high in OM and NDF, moderate in digestibility, and low in CP. Cattle grazing corn residues may need to be supplemented with a protein source to meet requirements. The development and application of DNA technology to create new corn hybrids has improved yields with fewer inputs, leading to a continued low cost food supply for consumers. …
Ethanol Byproduct Feeds: Determining Accurate Fiber Content, Nutrient Composition And Variability, Storing With Low-Quality Forages, And Fiber Utilization In Finishing Diets, Crystal D. Buckner
Ethanol Byproduct Feeds: Determining Accurate Fiber Content, Nutrient Composition And Variability, Storing With Low-Quality Forages, And Fiber Utilization In Finishing Diets, Crystal D. Buckner
Department of Animal Science: Dissertations, Theses, and Student Research
The growing ethanol industry has produced vast quantities of distillers grains plus solubles (DGS) in the wet (WDGS) and dry forms and Sweet Bran wet corn gluten feed (SB). Previous research has demonstrated that these byproduct feeds result in improved feeding values compared to grass in growing diets and corn in finishing diets, with positive economic returns. Four experiments were conducted to evaluate dry matter determination methods and variability of nutrient composition for WDGS, determining the accurate method for measuring NDF in corn and DGS, compare feeding WDGS mixed with straw as either fresh or ensiled, and evaluate fiber digestibility …
Distillers' Grains With Solubles For Feedlot Cattle: Finishing Performance, Lipid Metabolism, And Ethanol Greenhouse Gas Balance, Virgil R. Bremer
Distillers' Grains With Solubles For Feedlot Cattle: Finishing Performance, Lipid Metabolism, And Ethanol Greenhouse Gas Balance, Virgil R. Bremer
Department of Animal Science: Dissertations, Theses, and Student Research
Previous University of Nebraska feedlot research trials have characterized the feed value of wet distillers grains plus solubles (WDGS). These trials were summarized with meta-analysis methodology and indicated the feed value of WDGS interacts with corn processing type, cattle age (calf-fed or yearling), and inclusion level. Two steer finishing studies and a metabolism study were conducted to understand the impact of different lipid sources in WDGS on WDGS feed value. A biphasic lipid extraction procedure was developed to analyze feed samples from these trials that was more effective than Goldfisch ether extraction at lipid analysis of byproduct feds. These trials …
Alteration Of Vascular Endothelial Growth Factor A (Vegfa) Isoform Expression Results In Abnormal Gonadal Function, Ningxia Lu
Department of Animal Science: Dissertations, Theses, and Student Research
In the female, vascular endothelial growth factor A (VEGFA) isoforms regulate follicle development and affect the initial primordial follicle pool. In male rodent testes, they are involved in the development of vasculature and seminiferous cords. The objective of the current study was to evaluate effects of Sertoli and Granulosa cellspecific production of VEGFA isoforms on vascular development and gonadal morphogenesis. We used a DMRT1-cre crossed to a floxed VEGFA mouse to determine potential phenotypes in male Sertoli-cell (VEGFA-DSertG) and female Granulosa-cell (VEGFA-DGranG) specific knockouts. In females, we found smaller ovarian weight, fewer corpus luteums (CLs) with some abnormal CL morphology, …
Interaction Between Roughages And Corn Milling Byproducts In Finishing Cattle Diets, Joshua R. Benton
Interaction Between Roughages And Corn Milling Byproducts In Finishing Cattle Diets, Joshua R. Benton
Department of Animal Science: Dissertations, Theses, and Student Research
During ethanol production, starch is the primary nutrient fermented and the remaining byproducts are excellent sources of fiber and protein. In addition, inclusion of byproducts in finishing diets may reduce the incidence of acidosis. As a result, roughage level and quality could potentially be reduced in finishing diets containing byproducts. Three experiments were conducted to examine the effects of roughage and wet corn gluten feed (WCGF) in finishing cattle diets containing corn distillers grains plus solubles. Cattle fed finishing diets containing wet distillers grains plus solubles (WDGS) with no roughage had decreased DMI and ADG compared to cattle fed roughage. …
The Effect Of Natural Antimicrobial Ingredients On The Quality Of Roast Beef And Oven Roasted Turkey, Ace F. Vandewalle
The Effect Of Natural Antimicrobial Ingredients On The Quality Of Roast Beef And Oven Roasted Turkey, Ace F. Vandewalle
Department of Animal Science: Dissertations, Theses, and Student Research
This research evaluates the use of a buffered vinegar and lemon juice concentrate (LV) solution on the quality of restructured beef and turkey rolls. Two studies were conducted to evaluate processing and ingredient concentration. Beef and turkey rolls were formulated with minimal ingredients. 1.5% sea salt, 0.5% turbinado sugar, with LV or no LV. Study one evaluated length of mixing time (2.5, 5, 10, 15, 20 minutes) on quality and sensory attributes with 2.5% LV or 0% LV (C). Study two was divided into four treatments, 0% (C), 1.5%, 2.5%, and 3.5% LV, used to evaluate the effects of three …