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A New Species Of Cerapus Say, 1817 (Crustacea: Amphipoda) From The Northern Gulf Of Mexico, With Notes On Its Ecology, James Darwin Thomas, Richard W. Heard

Marine & Environmental Sciences Faculty Articles

During research in coastal marshes of the Mississippi Delta region in 1975, a large, undescribed amphipod belonging to the genus Cerapus was discovered in tidal channels. This new species, C. benthophilus, is characterized by its large size and 7-12 segmented antennal flagella. Habitat preference is muddy silt bottoms upon which it constructs conspicuous mats or "tufts" of interwoven tubes in shallow coastal bays and marshes from Louisiana to the panhandle areas of northern Florida.

Managing Water-Repellent Soils, D A. Mcghie

Journal of the Department of Agriculture, Western Australia, Series 4

A study of water-repellent soils has led to some management recommendations.

A New Tissue Test For Accurate Diagnosis Of Copper Deficiency In Cereals, J W. Gartrell, A. D. Robson, J. F. Loneragan

Journal of the Department of Agriculture, Western Australia, Series 4

Copper deficiency in ceereals can now be accurately diagnosed using tissue analysis.

The Place For Annual Brome Grass, G W. Anderson

Journal of the Department of Agriculture, Western Australia, Series 4

Grasses in the anual pastures of southern Australia are particularly important early in the growing season.

The main grass sown, has been annual rygrass, but concerns are emerging with 'annual ryegrass toxicity' and and 'in crop' competition.

This work looks at the role of annual brome grass in pastures.

South Dakota Farm And Home Research, South Dakota State University

South Dakota Farm and Home Research: 1949 -1998

Director’s Comments [p] 2
Hessian Flies [p] 3
Farm Consumers [p] 6
Muskies [p] 11
Pine Needle Abortion [p] 14
A New Cottage Cheese [p] 16
Sunflowers [p] 19
Lambing on Schedule [p] 22

Diet Of The Periwinkle Littorina Irrorata In A Louisiana Salt Marsh, Steve K. Alexander

Gulf and Caribbean Research

The diet of the periwinkle Littorina irrorata was examined. The food substrate utilized most frequently in the field was dead Spartina alterniflora. The primary component of the stomach and feces was vascular plant particles. Plant particles, even though a major portion of the diet, were egested unaltered in feces. Other food substrates contributed significantly to the diet. Marsh sediment was utilized by 37% of all snails observed to be feeding, while 4% grazed on live S. alterniflora. Algal mats, present on several occasions during the study, were utilized extensively. Comparison of microbial components in dead S. alterniflora and …

G79-432 Creep Feeding Lambs, Ted Doane

University of Nebraska-Lincoln Extension: Historical Materials

This NebGuide discusses creep feeding for lambs, making supplemental feed available only to nursing lambs.

Creep feeding is a management practice of making supplemental feed available only to nursing lambs. Creep feeding is desirable because: (1) lambs gain as much as a third to half a pound per day more when their milk diet is supplemented with grain, (2) the lambs are ready for market 1 to 2 months earlier, thus earlier marketing is adapted to a higher market for spring lambs, and (3) the lambs are not allowed to go to spring pasture, thus permitting more ewes on the …

G79-481 Setting A Realistic Corn Yield Goal (Revised January 2004), Achim Dobermann, Charles A. Shapiro

University of Nebraska-Lincoln Extension: Historical Materials

Corn growers need to set a realistic corn yield goal in order to make sound decisions on corn hybrid, seeding rate, fertilizer application, and irrigation need. The goal should be the most profitable yield that can be expected for the particular set of soil, climate, and management practices. Yield goals should gradually increase over time, but cannot exceed the theoretical yield potential. This NebGuide discusses how to set a realistic corn yield goal by acknowledging climatic yield limitations of corn in Nebraska and the yield history in a field.

G79-477 Beef Herd Management Calendar, Paul Q. Guyer

University of Nebraska-Lincoln Extension: Historical Materials

This publication contains a brief outline of management practices to be followed at various stages of the cow's reproductive cycle or at various times of the year.

Good management is the key to a successful beef production program. A high capital requirement and a relatively low return emphasize the need for effective management to maximize the profit potential of beef cows.

1979 Phosphorus And Sulphur Interactions On Pastures. Sulphur Nutrition Of Pastures, J. S. Yeates, M. F. Clarke

Experimental Summaries - Plant Research

Contents: Phosphorus and sulphur interactions on pastures. Sulphur nutrition of pastures. (i) Phosphorus x sulphur x times of application on pastures 1979: 79AL2, 79BY1, 79KE3, 79KE4.

(ii) Sulphur status/soil tests on pastures: 79AL18, 79AL22, 79AL25, 79AL41, .79BY2, 79BY3, 79BY4, 79HA1, 79HA2, 79HA3, 79KE7, 79M020.

(iii) Time of application of sulphur to pastures: 79BU1,79KE6.

(iv) Phosphorus, sulphur and potassium fertilisers on pastures on deep leaching sands: 79AL1, 79KE2, 79MA2, 79MA6.

(v) Phosphorus x sulphur interaction trials 1978; 1979 treatments: 78A7, 78BA8, 73B4, 78BU3, 78C4, 78MA2, 78M08, 78N04.

Wheat Potential Yield Trials - 79ka17 D. Hall, Beaufort River - 79wh32 Wongan Hills Research Station, R N. Weir, D Tennant, A. G. P. Brown, M. W. Perry

Experimental Summaries - Plant Research

COMMENTS 1. No insect problems experienced and broadleaf weeds effectively controlled by spraying. Septoria· leaf spot incidence insufficient to affect yields. 2. Little effect of time of planting on either total dry matter or grain yield. Crop received about 70% of the average May-October rainfall with a very dry September-October. Perhaps the distribution of rainfall allowed a similar pattern of water use, and total water use by each planting time. 3. There is probably a significant effect of Nitrogen regime on grain yield. Osmocote (N3) consistently yielded more than either single (N1) or repeated (N2) dressings of Agran 34:0. The …

Lupinosis : A Disease Still With Us, Jeremy G. Allen, P. Mcr. Wood, K. P. Crocker, J. Hamblin

Journal of the Department of Agriculture, Western Australia, Series 4

Current research on lupinosis continues to reveal what a complex problem it is, but the improved understanding should help to reduce losses.

Avondale Research Station : Representing 150 Years Of Western Australian Farming, D A C Johnson

Journal of the Department of Agriculture, Western Australia, Series 4

Avondale Research Station is open to the public as a 1979 Anniversary Year contribution by the Department of Agriculture in cooperation with the Primary Industries Committee of W.A.Y. 1979

Symptoms And Treatment Of Copper Deficiency Of Wheat, J W. Gartrell, R. F. Brennan, A. D. Robson

Journal of the Department of Agriculture, Western Australia, Series 4

Copper deficiency in wheat is still common but may not be easily noticed.

Testing Bulls For Breeding Soundness, R L. Peet

Journal of the Department of Agriculture, Western Australia, Series 4

New tests are available to ensure that bulls are fertile.

Trace Element Nutrition., J W. Gartrell, R F. Brennan

Experimental Summaries - Plant Research

Long term copper trial ( 28years ), 66N14.

Conclusions

Value Of High Fiber Diets For Grand Swine, D. S. Pollmann, D. M. Danielson, E. R. Peo, Jr.

Department of Animal Science: Faculty Publications

An experiment was conducted to determine the effect of roughages on the utilization of dietary nitrogen, energy and fiber by gravid swine. Water consumption, backfat depletion, pregnancy weight gain, and reproductive performance were used as response criteria.

Effect Of Graded Levels Of Bambermycins On Turkey Growth Performance, R.J. Grant, P.E. Waibel, T.W. Sullivan, C.L. Quarles

Department of Animal Science: Faculty Publications

Three experiments were conducted in Minnesota, Nebraska, and Colorado to determine the effect on turkey performance of feeding graded levels of bambermycins (Flavomycin ®1) from one day of age to market weight. The body weight and feed efficiency values are averages for 22-week-old males and 18-week-old females. Bambermycins produced significant (P<.001; P<.05) improvements in body weight or feed efficiency in all three experiments. Composite average body weights at 0, 1.1, 2.2, and 4.4 mg bambermycins/kg diet were 10.40, 10.54, 10.59, and 10.64 kg, respectively. Overall, average feed efficiencies from bambermycins at 0, 1.1, 2.2, and 4.4 mg/kg of diet were 2.76, 2.73, 2.72, and 2.71, respectively.

Growth Rate Of Thoroughbreds: Effect Of Age Of Dam, Year And Month Of Birth, And Sex Of Foal, R. L. Hintz, H. F. Hintz, L. Dale Van Vleck

Department of Animal Science: Faculty Publications

Weight, height, and cannon bone measurements were obtained on 1,992 Thoroughbred foals. Colts were heavier than fillies at birth and the differences increased with age. Dams under 7 years of age and older than 11 years had foals of lighter weight at birth than mares 7 to 11 years of age and the differences persisted at 510 days of age. Foals born in April, May, or June were heavier than foals born in January, February, or March. Year of birth also influenced body weight. The trends for height at withers and cannon circumference were similar to those of body weight.

An Ultrastructural Study Of Fresh And Ensiled Alfalfa Using The Light And Transmission Electron Microscope, Janet Louise Lazo-Davis

Electronic Theses and Dissertations

Late bud alfalfa was sampled prior to cutting and after 17 and 51 days of ensiling. Leaf and stem tissue were separated and immediately placed in 2.5% glutaraldehyde followed by 1% osmium textroxide for fixation. Following acetone dehydration, samples were embedded in Spurr plastic for examination under the light (LM) and transmission electron (TEM) microscopes. Light microscopy was used to differentiate cell types and tissues, e.g. epidermis, chlorenchyma, phloem, xylem, and pith. Iodine staining (LM) showed starch localization in chlorenchyma cells. Transmission electron microscopy analysis showed starch localized in chloroplasts of chlorenchyma. Leaf cells averaged nine chloroplasts per cell section …

Feeding And Housing Of Dairy Calves, Lester Vance Schaffer

Electronic Theses and Dissertations

In an 18 mo study antibiotic containing mastitic milk was collected from infected cows and fermented naturally for a minimum of 7 days at ambient temperature. Fermentation of antibiotic containing mastitic milk increased titratable acidity from 0.209% to 0.650% and decreased pH from 7.02 to 5.48. Fermentation decreased crude protein from 3.7% to 3.5% and increased NPN (% TN) from 6.0% to 8.4%. Penicillin was detected at a concentration of 1.2 IU/ml in the first milk after treatment and 0.01 IU/ml when fermented. Species of pathogenic organisms isolated from fresh and fermented milk were Staphylococcus epidermidis, Escherichia coli, Streptococcus dysgalactiae, …

The Effects Of Varying Dietary Protein, Calcium And Phosphorus In Starter Diets For Early Weaned Pigs, Wayne Eldon Schiefelbein

Electronic Theses and Dissertations

Genetic selection by swine producers the past 10 to 15 years has resulted in faster growing, heavier muscled pig. In addition, confinement rearing has placed an increased emphasis upon skeletal development and bone formation. Recent research conducted at Ohio State University indicated that growing swine responded to increasing dietary protein levels if both calcium and phosphorus are also correspondingly increased but maintained at approximately a 1.3:1 ratio. This and other research has led some investigators to believe that the National Research Council's requirements for protein, calcium and phosphorus may not be adequate to support maximum growth and development. Much attention …

The Distribution Of Cadmium, Chromium And Lead In Crabs, Clams And Oysters From Calcasieu Estuary, Louisiana, Fritz Jaenike

Masters Theses

In November 1978, specimens of oysters (Crassostrea virginica), clams (Rangia cuneata), crabs (Callinectes sapidus) and water and sediment samples were collected from Calcasieu Estuary, Louisiana. The concentrations of cadmium, chromium and lead were determined in the samples with an inductively coupled argon plasma direct reading emission spectrophotometer. Crab claw muscle, gill and carapace tissues were analyzed separately. Oysters and clams were separated into shell and whole soft tissue samples which were analyzed separately. The concentration order of the metals in crab carapace and in oyster shells was similar to that of the sediments, (Pb …

The Effect Of Sodium Hexametaphosphate On Cottage Cheese Yields, Stephen T. Dybing

Electronic Theses and Dissertations

A major concern in the cottage cheese industry is the inefficient use of the available milk proteins. Currently, the methods of cottage cheese manufacture convert an average of only 74.9% of the milk proteins into cottage cheese, while the remainder are removed in the by-product whey (43, 56). As protein is the main determinant of both the yield and nutritional value of cottage cheese, if 25% of the available protein is lost to the whey, then potential cottage cheese yield and nutrition have been lost as well. The proteins lost in the whey are mainly -lactalbumin and β-lactoglobulin, which remain …

Hei-Gro Intravaginal Devices And Synovex-H Implants For Feedlot Heifers, James P. Goodman

Electronic Theses and Dissertations

Heifers gain at a slower rate, generally require more feed per unit gain and sell at a lower market price than steers. Due to the fact that heifer carcasses are commonly fatter and contain more waste trim than steers, the value of a heifer carcass is routinely less than that of a steer carcass of comparable yield and quality grade. In the past, the ways in which the livestock operator could increase his profit from feeding heifers were limited. Differential cost of feeder heifers versus steers and feed cost were the major criteria involved in his decision of whether or …

Response Of Lactating Dairy Cows To Small And Large Amounts Of Dried Whey In The Concentrate Mixture, Eugene Walter Skyberg

Electronic Theses and Dissertations

Short-term (6 to 13 wk) experiments indicated that adding small amounts of dried whey to the concentrate mix fed to lactating dairy cows increase d milk fat percentage, but decreased milk production. In order to determine if the increased fat percentage was a positive response to dried whey in the ration, or an artifact of drying off the cows early, 5% dried whey product (DWP) was included in the concentrate mix fed to 10 Holstein cows. All cows started on the experiment in their 4th wk postpartum and continued for the duration of their lactation. The DWP replaced a portion …

Lake Itasca State Park Myxomycetes: An Annotated Checklist, M. E. Palm, E. L. Stewart, E. F. Haskins

Journal of the Minnesota Academy of Science

A lack of published information regarding Minnesota Myxomycetes prompted attempts to document species from Lake Itasca State Park in Clearwater county, in the northwest part of the state. Seventy-five species are herein recorded from 341 collections made during the years 1959, 1971,and 1975-78.

A Filamentous Bacterium On The Brine Shrimp And Its Control, Mobashir A. Solangi, Robin M. Overstreet, Ann L. Gannam

Gulf and Caribbean Research

A strain of a colorless, filamentous bacterium (tentatively identified as Leucothrix mucor) heavily infests the brine shrimp, Artemia salina. Its ultrastructure, unlike that of some other strains, does not reveal a distinct middle layer between its outer cell wall layer and cytoplasmic membrane, irregular blebs extending from the cell layers, or an external sheath. An entire infestation, represented as a mat of the bacterium with associated debris and microorganisms, sloughs from the shrimp when exposed to a variety of treatments. Primarily because most effective treatments are toxic to the shrimp, 100 ppm terramycin provides the treatment of choice.

The Relationship Of Sexual Dimorphism And Differential Predation To Sex Ratio In Leptochelia Dubia (Crustacea: Tanaidacea), Joseph Anthony Mendoza

University of the Pacific Theses and Dissertations

Leptochelia dubia is a dioecious tube-building tanais, which broods its young and exhibits marked sexual dimorphism. The species is widely distributed in the Pacific, Atlantic, Mediterranean and Indian Oceans, but to date there are no published accounts of its ecology. L. dubia is one of the most abundant of the small Crustacea in Tomales Bay, where it may attain densities of 30,000/m² in soft bottom communities.

Control Of Partitioning And Export Of Carbon In Leaves Of Higher-Plants, Donald R. Geiger

Biology Faculty Publications

Within source leaves, partition of assimilated carbon and export are regulated to both leaf and plant ontogeny and to environmental conditions. System goals, adaptive responses, control mechanisms, and information flow are developed from the viewpoint that a well-adapted plant is an integrated system. Regulation of partitioning and export involves both feedforward control and feedback homeostasis. Export is controlled by regulation of metabolism which supplies assimilated material to be translocated, by control of efflux into the free space of material destined for export, and by regulation of phloem loading. Control of export by the latter two processes depends on responsive metabolic …