Life Sciences Commons^™

A New Roe Knife, Jim Zaborski

Reports

No abstract provided.

Sexual Dimorphism, Resource Partitioning And Intraspecific Aggression In Caprella Californica Stimpson, Ian D. Campbell

University of the Pacific Theses and Dissertations

The Caprellidae are a specialized suborder of Amphipoda, which are highly modified for a semisessile life. Caprellids exhibit direct development and brood their young. The suborder is exclusively marine and commonly found on filamentous algae, sea grasses and fouling communities. Most published works on caprellids have been primarily concern~d with systematics (Caine, 1974; Dougherty, 1943; Laubitz, 1970, 1972; McCain, 1968, 1975), although a few recent studies have dealt with ecology and ethology (Bynum, 1978; Caine, 1977; Keith, 1969, 1971; Lewbel, 1978; Saunders, 1966).

This study examines·spatial and temporal variations in distribution, abundance and population structure as well as describing intraspecific …

Estuarine Response To Nutrient Enrichment, A Counterpart Of Eutrophication : A Bibliography, K. L. Webb, D. M. Hayward, J. M. Baker, B. Murray

Reports

This work is a result of our efforts to compile the literature related to the results of nutrient enrichment of estuaries. It consists of two related publications, a bibliography and an annotated bibliography; both works are accompanied by an index which applies to either bibliography. An attempt has been made to include a few key papers related to various processes, eg nutrient uptake by phytoplankton, which influence or participate in the response process.

The Regulation Of Body Fluids In The Estuarine Annelid Nereis Succinea, James Alan Dykens

Dissertations, Theses, and Masters Projects

No abstract provided.

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 …

Effects Of Rumensin Or Lasalocid On Rumen Fermentation In Vitro, E. Bartley, E. Herod, R. Bechtle, D. Sapienza, B. Brent

Kansas Agricultural Experiment Station Research Reports

A series of artificial-rumen studies tested effects of Rumensin and lasalocid on rumen fermentation. At concentrations of 22, 44, and 66 ppm both depressed microbial protein synthesis. Both severely inhibited protein synthesis at 176 ppm. Both increased propionic acid and decreased acetic acid concentrations. However, only Rumensin increased lactic acid. Both inhibited total gas production and decreased the percentage of methane. We concluded that lasalocid and Rumensin have similar effects on rumen fermentation.

Using Wheat Straw In Beef Cow Rations, B. Peverley, L. Corah, M. Mckee, Ronald V. Pope

Kansas Agricultural Experiment Station Research Reports

We conducted two trials to study using wheat straw in rations of either lactating or gestating beef cows maintained in dry lot. In trial 1, cow weight changes the last 60 days of lactation were: alfalfa hay, +26.88 lbs; two-thirds alfalfa hay-one third chopped wheat straw, +27.94 lbs; one-third alfalfa hay and two thirds chopped wheat straw, -26.84 pounds. Gains by the cows' calves; 146, 143, and 144 pounds, respectively did not differ statistically. Cows receiving one-third alfalfa hay and two-thirds chopped wheat straw lost condition as measured by weight/height ratios, while those on the other two treatments gained condition. …

Effects Of Steam Pelleting And Extruding Sorghum Grain-Soybean Meal Diets On Phosphorus Availability For Swine (1979), M Trotter, G Allee

Kansas Agricultural Experiment Station Research Reports

Two feeding trials and three phosphorus balance studies were conducted to compare the effect of steam pelleting, extruding, and grinding on phosphorus availability. The results indicate that steam pelleting or extruding has little, if any, effect on the availability of phosphorus for finishing swine (100 to 220 lbs.).; Swine Day, Manhattan, KS, November 8, 1979

Evaluation Of Hover Types With And Without Supplemental Heat For Finishing Pig Performance (1979), G L. Allee, David A. Nichols, Robert H. Hines

Kansas Agricultural Experiment Station Research Reports

One hundred sixty Yorkshire barrows and gilts were used to evaluate supplemental heat and various types of hovers for finishing pigs during December, 1978, and January, 1979. Hovers constructed of plywood, straw, and plywood covered with foil were placed over pens with and without catalytic heaters to determine the effect of each on performance. Hovers modified the pig's environment by an average of 80 straw hover, 90 foil covered plywood, and 30 plywood hover. Average daily gain and feed required per pound of gain were similar for all treatments. Pigs fed in pens with catalytic heaters gained slightly faster and …

Allyl Trenbolone To Control Estrus In Gilts-Conception Rate And Litter Size After Treatment (1979), Duane L. Davis, J M. Robl, Jim L. Nelssen

Kansas Agricultural Experiment Station Research Reports

Control of estrus in gilts is theoretically possible by feeding a progestogen for 18 consecutive days. During the feeding period the progestogen suppresses estrus in all gilts and when withdrawn from the feed, all animals are expected to come in heat 4 to 7 days later. To be useful, the synchronizing agent must meet two criteria: (1) it must effectively control the time of estrus, and (2) it must not adversely affect fertility. We conducted this trial to evaluate a progestogen, allyl trenbolone, with respect to these criteria. Allyl trenbolone is not presently available to swine producers.; Swine Day, Manhattan, …

Protein Adjustments During Temperature Stress, D.R. Ames

Kansas Agricultural Experiment Station Research Reports

Adjusting feedlot rations to match the thermal environment can reduce costs of gains. Adjusting protein content of rations does not change average daily gain but it improves protein efficiency.

The Effects Of A Kinesthetic Training Program On The Acquisition Of Industrial Skills Among University Students, John V. Mockler

Dissertations and Theses @ UNI

Training workers for specific jobs is receiving much attention in industry. The demand for skilled workers is increasing constantly and as this happens newer and more efficient methods of training are sought In the psychomotor/sensory area. skills that appear to offer a wide amount of transferability are those dealing with fine sensitivity, manual dexterity, and coordination. Even though these skills lend themselves well to training, this area is somewhat deficient in current educational and training programs (Sjogren, 1977, p.23). Presently, on-the-job training is widely used for training workers in the actual tasks they will perform during their job.

The process …

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

New Dung Beetles At Work In Western Australia, T J. Ridsdill-Smith

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

Two kinds od dung beetles are active in the agricultural areas of Western australia. In one group are the native beetles which are mainly active in winter, and in the other group are beetles introduced from overseas. The introduced beetles are mainly active in summer and have already produced some spectacular results

Perennial Pasture Measures Up, D A. Nicholas

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

In a trial at Manjimup, a pasture based on the perennial grass, Currie cocksfoot, gave substantially more production than a comparable annual pasture.

Breeding A Barley Resistant To Leaf Disease, T N. Khan, P. A. Portmann

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

In the last few years the Department of Agriculture has begun a programme to produce brley varieties resistant to the leaf diseases, scald and net blotch. These diseases cause substantial losses that may not be apparent to an individual farmer.

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.

Learning To Live With Spotted Alfalfa Aphid, M Grimm

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

The spotted alfalfa aphid which can devastate lucerne crops and perhaps also medic pastures, has been established in Western Australia since early 1978. However several methods of control are being developed, which could allow continued production of lucerne.

Diagnosing Pregnancy In Sheep : The 'Scanopreg', R H. Wroth, M. J. Mccallum

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

The "Scanopreg", an ultrasonic machine for diagnosing pregnancy in sheep, is effective as early as eight to nine weeks of pregnancy, and could therefore be a useful management tool.

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.

Ryegrass Toxicity Organism Found On Other Grasses, D L. Chatel, J. L. Wise, A. G. Marfleet

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

Yellow slime disease caused by Corynebacterium sp. has recently been found in three grass species.

The diseased grasses were found in the field growing with each other and with affected toxic annual ryegrass.

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.

Cereal, Pasture Legume And Water Supply Prospects At Forrestania : Results Of Experimental Work East Of Hyden, Western Australia, T E. Mcdowell, M G. Mason, J W. Gartrell, William J. Toms, I A F Laing

Technical Bulletins

The agricultural potential of the Forrestania area appears at least equal to that of much of the settled eastern wheatbelt. The scrubplain soils of the Forrestania area have an average yield potential of at least 1 000 kg/ha wheat and carrying capacity of 1.8 to 3.7 sheep per hectare on improved pastures. The use of clover ley rotations would maintain these levels of potential yield. Partial crop failures caused by adverse seasonal conditions could be expected 10 years in every 100.

Effect Of High-Moisture Grain On Availability Of Phosphorus For Swine (1979), M Trotter, G Allee

Kansas Agricultural Experiment Station Research Reports

A feeding trial and two phosphorus balance studies were conducted to compare the availabilities of phosphorus from high-moisture sorghum grain treated with propionic acid (1.2% acid, 23% moisture), grain stored in an oxygen limiting structure (27% moisture), and field-dried sorghum grain (13% moisture). Bone and phosphorus retention data indicated that the phosphorus in high-moisture sorghum grain is more available than phosphorus in field-dried sorghum grain.; Swine Day, Manhattan, KS, November 8, 1979

Rumen Bacterial Endotoxins And Their Possible Role In The Sudden-Death Syndrome, Tiruvoor G. Nagaraja, E. Bartley, L. Fina, H. Anthony, H. Leipold

Kansas Agricultural Experiment Station Research Reports

We have found that rumen bacteria contain endotoxins that are released into rumen fluid. Also rumen fluid from grain-fed cattle contains considerably more free endotoxin than rumen fluid from hay-fed cattle. Injecting cattle with rumen bacterial endotoxins may be involved with such diseases associated with high-grain feeding as the sudden death syndrome.

Pelvic Area, Calving Ease And Rebreeding In First Calf Heifers, R.R. Schalles, A.T. Fleck, L.R. Corah, G. Kiracofe

Kansas Agricultural Experiment Station Research Reports

Pelvic area had little influence on the number or severity of calving problems after size and condition of two-year-old first-calf heifers, sex and weight of their calf, and genetic background of the heifer and her calf were accounted for. Little difference in rebreeding was attributed to calving difficulty, although heifers that had Caesarean deliveries rebred about two weeks later than those giving natural birth.

Effects Of Ralgro And Des Implants During The Suckling Period On Later Reproductive Performance Of Beef Heifers, L.R. Sprott, L.R. Corah, G.H. Kiracofe, M. Mckee, F.L. Schwartz

Kansas Agricultural Experiment Station Research Reports

Heifers were given either one or two Ralgro implants or one DES implants during the suckling period with no obvious effect on later reproductive performance when the heifers were bred as yearlings. However, conception rates in control heifers were low in two trials, so more studies are needed for conclusive results.

Milo Stover, Forage Sorghum, Prairie Hay, Soybean Meal And Urea Compared For Growing Heifers, K. Bolsen, J. Oltjen, H. Ilg

Kansas Agricultural Experiment Station Research Reports

Milo stover silage, prairie hay or forage sorghum silage was fed in rations containing 10, 12 or 14% protein from soybean meal (SBM) or 12% protein from urea; 100 heifers were fed in the 78-day growing trial (November 11, 1977 to February 2, 1978). Heifers fed forage sorghum silage, prairie hay or forage sorghum silage + prairie hay had similar rate and efficiency of gains; those fed milo stover silage made slowest and least efficient gains. Rations containing prairie hay were consumed in the greatest amounts. Feeding rations with 12 or 14% protein from SBM gave better performance than rations …

Predicting Feedlot Performance Using Mathematical Models, P. George, B.E. Brent

Kansas Agricultural Experiment Station Research Reports

Tables based on mathematical models illustrate how feed intake, rate of gain, and feed efficiency change during the feeding period and in response to different wing-chill temperatures. The tables wert used to calculate costs or gain.

Processing Retail Beef Cuts From Boxed Beef, M.O. Leafgreen, J.H. Mccoy

Kansas Agricultural Experiment Station Research Reports

This analysis measured efficiencies of a centralized retail meat fabrication facility receiving all beef as boxed or as carcasses. Moving vacuum-packaged, boxed-beef subprimals through a central meat processing facility was more efficient than a corresponding operation with beef carcasses. Boxed beef saved approximately 6.0 cents per pound on wholesale cuts.