Life Sciences Commons^™

Lu Horticulture Notes October 2018, Touria Eaton

LU Horticulture Notes

LU Horticulture Notes October 2018 issue provides updates on the horticulture program, information on the USDA Sustainable Agriculture grant, a LU Horticulture Program effort to train inmates at Southeast Correctional Center in Charleston, Missouri, and agritourism in the bootheel region of Missouri.

LU Horticulture Notes is published by Cooperative Extension and Research Program and edited by Dr. Touria Eaton, assistant professor of horticulture.

Lu Horticulture Notes September 2018, Touria Eaton

LU Horticulture Notes

LU Horticulture Notes September 2018 issue covers efforts towards compliance with the FDA Food Safety Modernization Act, its exemptions, a discussion of the science behind root systems, Facebook marketing tips for small farmers, and pests to monitor. It also provides a profile on a Flint, Michigan woman's experience starting a sustainable homestead from scratch on 40 acres in Ripley county, Missouri.

LU Horticulture Notes is published by Cooperative Extension and Research Program and edited by Dr. Touria Eaton, assistant professor of horticulture.

Lu Horticulture Notes August 2018, Touria Eaton

LU Horticulture Notes

LU Horticulture Notes August 2018 issue covers student experience at LU Carver Farm Field Day, the nutritional benefits of turnips, how to protect pollinators during pesticide application, information on the On-Farm Readiness Review, and one woman's experiences growing vegetable crops in Missouri's Bootheel region.

LU Horticulture Notes is published by Cooperative Extension and Research Program and edited by Dr. Touria Eaton, assistant professor of horticulture.

Lu Horticulture Notes July 2018, Touria Eaton

LU Horticulture Notes

LU Horticulture Notes July 2018 issue provides updates on the LU Student Farming Enterprise, tips on planting and harvesting, what pests to monitor, an overview of the 2011 Federal Food Safety and Modernization Act, and more.

LU Horticulture Notes is published by Cooperative Extension and Research Program and edited by Dr. Touria Eaton, assistant professor of horticulture.

The Fate Of Methylcyclohexane Methanol In Soil And Effect On Enzyme Activity, William Doggett, Frieda Eivazi

Research Posters

Methylcyclohexane methanol (MCHM) is the chemical that leaked into the Elk River, in Charlestown, West Virginia on the 9th of January, 2014, causing state of emergency called for use of drinking water contaminated with the chemical. Methylcyclohexane methanol is an organic compound classified as a saturated higher alicyclic primary alcohol. It is commonly used in air fresheners and as frothing agent for coal processing and cleaning. The full toxicity of this chemical to humans was unknown at the time of spill and there is still lack of information on exact toxic effects of the crude MCHM. In a recent study …

Effect Of Silver Nanoparticles On Select Soil Enzyme Activities Involved In Nutrient Cycling, William Doggett, Frieda Eivazi, Zahra Afrasiabi, L. Jose

Research Posters

Soils are being continuously exposed to large amounts of engineered nanoparticles (ENPs), especially silver nanoparticles (AgNPs). These materials can interact with microbial enzyme activity, stability and/or specificity affecting their role in nutrient cycling. Specific enzyme activity measurements have potential to serve as bioindicator in identifying major changes in the soil environment. Present study investigated the effect of AgNPs on soil enzymes known to play a critical role in mineralization of C, N, P and S in the soil. Soil samples were collected from surface layer (0-10 cm) of a Wrengart silt loam series. The study used two sizes (10 and …

Optimal Feeding Time And Duration Of Hybrid Crappie Kept Indoors, Wiles N. Brandon, Gregory A. Dudenhoeffer, Thomas R. Omara-Alwala

Cooperative Extension Research Publications

Crappie (Pomoxis spp.) is a popular sport fish with food fish potential. Feeding behavioral patterns should be considered prior to nutrtitional studies. The objective of this study was to determine the best feeding time and duration for hybrid crappie raised in indoor recirculating aquaculture systems. Three feeding treatments with three replciates consisted of two 12 hour feeding periods initiated at 0800 (12h-amLD) and 1700 (12h-pmLD) and a 24 feeding period started at 0800 (24h-amLD). Treatments in experimental tanks were arranged in a random block design and stocked with 14 hybrid fingerlings fed for 12 weeks. Fingerling fish were spwaned in …

The Size Relationship Of 12 Days Post-Exodus Larvae With 56 Day Post-Exodus Fingerlings Regarding Growth And Survival In Bluegill (Lempomis Macrochirus), J.L. Schulte, James E. Wetzel

Cooperative Extension Research Publications

Low survival and quality of early life-stage bluegill is an obstacle to viable production where size may influence weaning efficiency. Herein, we investigate through two trials the effects of fry size 12-d post-exodus on total length, weight, production and survival through 56-d post-exodus. Full sibling broods (trial 1=10, trial 2=6) were reared with feedings of brine shrimp Artemia sp. nauplii (BS) through 12-d post-exodus (PE). Broods of trial 1 were visual sorted 12 d PE into small and large size groups. Fry (n = 25) from each size group were sampled for measured total length (TL) and weight. Starting 14 …

Biweekly Growth Characteristics Of Juvenile Bluegill Fed Different Protein Diets, Wiles N. Brandon, Gregory A. Dudenhoeffer, Yongfang Zhang, Thomas R. Omara-Alwala

Cooperative Extension Research Publications

This study evaluated growth rates of juvenile bluegill (Lepomis macrochius) fed different protein levels, raised indoors. Six experimental diets containing protein levels of 32, 35, 38, 41, 44, and 47% with 346 kcal/g energy were fed to four replicates of 12 fish with initial mean weight of 24.9±0.51g. Fish were fed by hand to satiation three times daily for 16 weeks. Percent weight gain, for fish fed 32, 35, 38, 41, 44, and 47% protein diets were 180.5±43.8, 203.6±32.33, 256.4±19.4, 235.8±20.63, 249.1±19.59, and 275.2±47.3, and specific growth rates 0.91±0.15, 0.98±0.10, 1.13±0.05, 1.08±0.05, 1.11±0.05, and 1.17±0.11, respectively for the study. Biweekly …

The Effects Of Dietary Protein-To-Energy Ratio On Juvenile Bluegill (Lepomis Macrochirus) Growth With Observations Of Sexual Dimorphism, K. Vandeloecht, Gregory A. Dudenhoeffer, Yongfang Zhang, T.R. Omara-Alwala

Cooperative Extension Research Publications

Bluegill is a promising aquaculture species in the Midwest. males are typically larger than females. However, there is little or no information on nutritional differences between sexes and protein-to-energy ratio. The objective of this study was to characterize the protein-to-energy ratio in juvenile bluegill with observations on gender differences. Bluegill (20-30g) were fed diets consisting of 35% protein with 14, 16, and 18% lipids and 38% protein with 12, 14, and 16% lipids. Four replicates of 12 fish each were fed the diets for 16 weeks. Terminal mean body weights, lengths, liver wights, visceral weights, hepatic somatics indices (HSI), and …

The Distribution Of Α-Amylase Activity Along The Digestive Tract Of Juvenile Bluegill (Lepomis Macrochirus) And Its Comparison With Selected Fish Species, Namrata Giri, Yongfang Zhang, Gregory A. Dudenhoeffer, Thomas R. Omara-Alwala

Cooperative Extension Research Publications

Carbohydrates are the least expensive form of dietary energy for animals. Although fish don't have specific requirements for dietary carbohydrates, they must be provided with the appropriate levels of carbohydrates in their diets. Moderate levels of carbohydrate could support fishs' better growth performance and may decrease the use of the more expensive protein and lipids in the diet. Different fish have different ability to utilize digestible carbohydrates, which may relate to the relative amount of amylase activity present in the digestive system of the various species. α-amylase is a key enzyme for carbohydrate digestion. Bluegill, an important forage and recreational …

Amino Acid Profiles In The Tissues Of Juvenile Bluegill (Lepomis Macrochirus) From The Wild And Commercially-Fed Fish, Yongfang Zhang, Gregory A. Dudenhoeffer, Namrata Giri, James E. Wetzel

Cooperative Extension Research Publications

Amino acid profiles of fish tissues and fish eggs have been extensively investigated in some fish species. Amino acid profiles are helpful in quantifying the indispensable amino acid requirements for these fish. Bluegill is a major forage fish for the largemouth bass (Micropterus samoides) and an important recreational fish throughout the US. The demand for bleugill as a food fish has increased recently. However, the information on the amino acid profiles of its eggs and tissues is lacking. The objectve of this study was to determine the amino acid profiles of the muscles and whole body of the 1-2 g …

Effects Of Soybean Meal Substitution For Fish Meal In Diets Of Juvenile Bluegill (Lepomis Macrochrius), K. Stuckenschneider, A. Allen, A. Weckenborg, Gregory A. Dudenhoeffer

Cooperative Extension Research Publications

Bluegill has potential for production as a food fish. Feed is 40-60% of total production costs. Few studies have been conducted on bluegill replacing fish meal with soybean meal, which is a less expensive plant protein source. The objective of this experiment was to determine the effect of 25, 50, 75% soybean meal substitution of fish meal protein in juvenile bluegill diets. Treatments consisted of a 38% crude protein control diet, and diets with 25, 50, and 75% of fish meal replaced with soybean meal (SB Sub). All diets were insonitrogenous and isocaloric. A completely randomized block design was used …

The Effect Of Dietary Protein Level On The Growth Performance And Digestive Protease Activity In Juvenile Bluegill (Lepomis Macrochrius), Yongfang Zhang, Gregory A. Dudenhoeffer, Thomas R. Omara-Alawla

Cooperative Extension Research Publications

A 16-week feeding experiment was conducting in an indoor recirculating aquaculture system (RAS) to determine the effects of dietary protein level on the growth and digestive protease activity in juvenile bluegills. Six isocaloric experimental diets were forumalted with 32%, 35%, 38%, 41%, 44%, and 47% levels of protein. Menhdaen fish meal was use as the sole protein source. Juvenile bluegills of 24.91 ± 0.50 g initial weight were distributed into 24 151 L tanks with 12 fish each. Each diet had four replications. Fish were fed to satiation three times a day by hand. At the termination, there no mortalities …

Effects Of Chemical Preservatives On Weights And Lengths Of Bluegill Larvae, Scott M. Welch, Gregory A. Dudenhoeffer, Thomas R. Omara-Alawla

Cooperative Extension Research Publications

Measuring the lenghts and weights of live fish larvae can be tedious and time-consuming. This constraint could be alleviated by preserving the fish larvae in appropriate chemicals for later measurements. There is little or no information on the effects of preservatives on Bluegill larvae. The objective of this study was to determine the effects of five different common preservatives on Bluegill larvae. Individual weights and lengths of fish were measured and then the larvae were preserved for 7 or 26 days. Preservatives were 5% formalin, 10% formalin, 30% ethanol at -19 *C, 70% ethanol, and 90% ethanol. Preliminary average weights …

Lincoln University Cooperative Extension And Research Annual Report 2014, Lincoln University Cooperative Extension And Research

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