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2002

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Articles 391 - 420 of 671

Full-Text Articles in Animal Sciences

Effects Of Rumensin Level During An Acidosis Challenge, Trey Patterson, Todd Milton, Galen E. Erickson, Terry J. Klopfenstein, M. Blackford, Cal Parrott Jan 2002

Effects Of Rumensin Level During An Acidosis Challenge, Trey Patterson, Todd Milton, Galen E. Erickson, Terry J. Klopfenstein, M. Blackford, Cal Parrott

Nebraska Beef Cattle Reports

Eighteen ruminally cannulated steers were used to determine effects of Rumensin level on incidence and severity of acidosis when an acidosis challenge was imposed. Steers received a high-concentrate finishing diet containing either 0, 30, or 45 grams/ton Rumensin. An acidosis challenge was created by feeding only 50% of diet intake one day followed by 175% of intake the next day, four hours post normal feeding time. Feeding Rumensin decreased feed intake during the prechallenge, challenge and acidosis recovery phase. Compared to 30 grams/ ton, feed intake was decreased by increasing Rumensin to 45 grams/ton during the five days following the …

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Supplementing Yearling Summer Grazing Cattle With Fat And Protein And Subsequent Feedlot Performance, Ivan G. Rush Jan 2002

Supplementing Yearling Summer Grazing Cattle With Fat And Protein And Subsequent Feedlot Performance, Ivan G. Rush

Nebraska Beef Cattle Reports

Yearling steers supplemented with protein (40% - 29% NPN - 19% from biuret) while grazing primarily crested wheat grass in the summer gained at a faster rate than control steers which were only provided a commercial salt/ mineral mix. A lower level of protein (20% - 6.7% NPN)/fat (15% -20%) combination supplement also increased gain over controls, but the supplement response was less than the higher protein supplement. Gain responses were greater during the latter part of the grazing season when forage quality was poorest. Supplementation intake varied but tended to be greater during the latter part of the grazing …

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Forage Quality And Animal Performance Of Steers Grazing Smooth Bromegrass/Legume Pastures, Mark Ullerich, Terry J. Klopfenstein, Bruce Anderson, Michael Trammell Jan 2002

Forage Quality And Animal Performance Of Steers Grazing Smooth Bromegrass/Legume Pastures, Mark Ullerich, Terry J. Klopfenstein, Bruce Anderson, Michael Trammell

Nebraska Beef Cattle Reports

A trial was conducted to evaluate effects of interseeding legumes into smooth bromegrass pastures on animal performance and forage quality. Animal gains on legume/bromegrass treatments were higher than bromegrass alone. Laboratory analysis of diet samples collected from ruminally fistulated steers indicated no difference in the undegradable intake protein content of pastures. Legume/bromegrass treatments had higher IVDMD than the control. Therefore, the increases in gain are attributed to increased energy of legume/bromegrass diets and not undegradable protein content.

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Effect Of Sawdust Or Acid Application To Pen Surfaces On Nitrogen Losses From Open-Dirt Feedlots, John Lory, Julie Adams, Bahman Eghball, Terry J. Klopfenstein, J. F. Powers Jan 2002

Effect Of Sawdust Or Acid Application To Pen Surfaces On Nitrogen Losses From Open-Dirt Feedlots, John Lory, Julie Adams, Bahman Eghball, Terry J. Klopfenstein, J. F. Powers

Nebraska Beef Cattle Reports

Two nutrient management treatments (sawdust or sulfuric acid application to pen surface) were compared to conventional management using 12 pens (10 steers/pen) to determine effects on performance and nitrogen losses from pens. Performance and carcass characteristics for treatments were similar to the control. The sawdust treatment retained more nitrogen in manure when removed from the pen surface and after composting. Increasing carbon by sawdust additions reduced nitrogen losses by 21%. Applying acid to the pen surface did not affect quantity of nitrogen or organic carbon conserved in manure and compost.

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Distribution Of Clinostomum Marginatum (Yellow Grub) Metacercaria In Smallmouth Bass Populations From Crooked Creek In North Central Arkansas, James J. Daly, Bruce Deyoung, Terryl L. Hostetler, Randal J. Keller Jan 2002

Distribution Of Clinostomum Marginatum (Yellow Grub) Metacercaria In Smallmouth Bass Populations From Crooked Creek In North Central Arkansas, James J. Daly, Bruce Deyoung, Terryl L. Hostetler, Randal J. Keller

Journal of the Arkansas Academy of Science

Four hundred thirty-three smallmouth bass (Micropterus dolomieui) were collected from ten sites on Crooked Creek in North Central Arkansas from just below the city of Harrison to the White River in the summers of 1988-90. Necropsy of these hosts for yellow grub (Clinostomum marginatum) metacercariae showed a range of mean abundance (average/fish) from 1.4 ±1.9 (SD) at a far up stream site to 105 ± 368 at the White River juncture. An increasing mean abundance of C. marginatum was seen from the uppermost sites of the creek downstream to the White River. Relating stream mileage with mean abundance gave a …

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Epidermal Papilloma In An Ozark Hellbender (Cryptobranchus Alleganiensis Bishopi) From The Spring River Of Northwest Arkansas, Stanley E. Trauth, John C. Harshbarger, Patrick Daniel Jan 2002

Epidermal Papilloma In An Ozark Hellbender (Cryptobranchus Alleganiensis Bishopi) From The Spring River Of Northwest Arkansas, Stanley E. Trauth, John C. Harshbarger, Patrick Daniel

Journal of the Arkansas Academy of Science

An Ozark hellbender (Cryptobranchus alleganiensis bishopi) with multiple, large, warty skin lesions was collected in the Spring River, Fulton County, Arkansas, in 1994. The specimen was a female, 560 mm in total length, and had a mass of 1,947 g. Tissues were formalin-fixed, and three lesions were processed for histopathology. The normal skin at the tumor margins had a stratified squamous epidermis overlying a loose, well-vascularized, heavily pigmented dermis. Poison glands and mucous glands extended from the epidermis into the dermis. The lesions, in contrast, were masses of epidermal cells up to 100 times thicker than the normal epidermis. They …

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Bats Of The Jessieville Ranger District, Ouachita National Forest, Arkansas, C. Renn Tumlison, Tobin Fulmer, Tommy Finley, David A. Saugey Jan 2002

Bats Of The Jessieville Ranger District, Ouachita National Forest, Arkansas, C. Renn Tumlison, Tobin Fulmer, Tommy Finley, David A. Saugey

Journal of the Arkansas Academy of Science

During July and August 2000 and 2001, mist nets were set concentrated on three drainages in the Jessieville District of the Ouachita National Forest: North Fork Ouachita River (ten sites), Irons Fork Creek (five sites), and Muddy Creek (two sites). A total of 83 bats representing seven species was caught during 20 evenings (43 net nights). Sampled habitats included pools in road ruts, intermittent streams, man-made ponds on ridgelines, a wet road rut fed by a seep, small drainages that flowed only after a heavy rain, a standing pool in a clearing, and larger streams. Eastern red bats (Lasiurus borealis) …

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Hazards Of Fishing Gear To Wildlife Of Lakes In Arkansas, Tobin Fulmer, C. Renn Tumlison Jan 2002

Hazards Of Fishing Gear To Wildlife Of Lakes In Arkansas, Tobin Fulmer, C. Renn Tumlison

Journal of the Arkansas Academy of Science

No abstract provided.

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Habitat And Abundance Of The Ouachita Darter (Percina Sp. Nov.), Charles J. Gagen, Kendall R. Moles, Lisa J. Hlass, Richard W. Standage Jan 2002

Habitat And Abundance Of The Ouachita Darter (Percina Sp. Nov.), Charles J. Gagen, Kendall R. Moles, Lisa J. Hlass, Richard W. Standage

Journal of the Arkansas Academy of Science

No abstract provided.

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Coccidian Parasites (Apicomplexa: Eimeriidae) Of Select Rodents Of Western And Southwestern Arkansas And Northeastern Texas, Chris T. Mcallister, Joshua E. Kessler Jan 2002

Coccidian Parasites (Apicomplexa: Eimeriidae) Of Select Rodents Of Western And Southwestern Arkansas And Northeastern Texas, Chris T. Mcallister, Joshua E. Kessler

Journal of the Arkansas Academy of Science

No abstract provided.

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Parasites Of Four Endemic Plethodon From Arkansas And Oklahoma, Chris T. Mcallister, Charles R. Bursey, Stanley E. Trauth Jan 2002

Parasites Of Four Endemic Plethodon From Arkansas And Oklahoma, Chris T. Mcallister, Charles R. Bursey, Stanley E. Trauth

Journal of the Arkansas Academy of Science

No abstract provided.

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Concentrations Of American Alligator Populations In Arkansas, Christopher L. Watt, Philip A. Tappe, Mark F. Roth Jan 2002

Concentrations Of American Alligator Populations In Arkansas, Christopher L. Watt, Philip A. Tappe, Mark F. Roth

Journal of the Arkansas Academy of Science

No abstract provided.

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Abnormalities In The Ozark Hellbender, (Cryptobranchus Alleganiensis Bishopi), Benjamin A. Wheeler, Malcolm L. Mccallum, Stanley E. Trauth Jan 2002

Abnormalities In The Ozark Hellbender, (Cryptobranchus Alleganiensis Bishopi), Benjamin A. Wheeler, Malcolm L. Mccallum, Stanley E. Trauth

Journal of the Arkansas Academy of Science

No abstract provided.

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Length-At-Age In Juvenile Patagonian Toothfish (Dissostichus Eleginoides), J. Ashford, C. Jones, S. Bobko, I. Everson Jan 2002

Length-At-Age In Juvenile Patagonian Toothfish (Dissostichus Eleginoides), J. Ashford, C. Jones, S. Bobko, I. Everson

OES Faculty Publications

We used the otoliths from a sample of Dissostichus eleginoides pre-recruits, whose length density was distinctly polymodal, to see whether ages estimated by reading otoliths were congruent with the length modes observed. Length densities by age were compared graphically with the overall length density observed. Additionally, ages were predicted for each fish based on length, and compared with ages estimated from reading otoliths in a goodness-of-fit test. The majority of the otoliths (83.6%) were estimated to be from fish 1+ or 2+ years old, with mean total lengths of 32.5 cm and 41.3 cm respectively. No difference was found between …

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Age And Growth Of Largemouth Bass At Freshwater Lagoon, Humboldt County, California, Stephen Will Pagliughi Jan 2002

Age And Growth Of Largemouth Bass At Freshwater Lagoon, Humboldt County, California, Stephen Will Pagliughi

Cal Poly Humboldt theses and projects

The quality of the largemouth bass fishery at Freshwater Lagoon was evaluated by assessing age structure, stock structure, condition, and growth characteristics. A total of 1,511 largemouth bass was sampled from 1986 through 2000 using a boat electroshocker. Scales were collected from 706 fish and assigned ages. Eleven age classes were identified with a maximum age of 10 years. Age assignment precision between two readings was 95%. Paired scale and otolith (sagittae) samples were collected via hook-and-line from 20 largemouth bass in spring and early summer of 2002. The agreement rate of age determination between structures was used as a …

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Response Of Anchovy (Engaulis Ringens) Off Northern Chile To The 1997-1999 El Niño-La Niña Sequence, José L. Blanco, Patricio Barria, Jorge Castillo, Larry P. Atkinson Jan 2002

Response Of Anchovy (Engaulis Ringens) Off Northern Chile To The 1997-1999 El Niño-La Niña Sequence, José L. Blanco, Patricio Barria, Jorge Castillo, Larry P. Atkinson

CCPO Publications

No abstract provided.

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Algal Blooms Reduce The Uptake Of Toxic Methylmercury In Freshwater Food Webs, Paul C. Pickhardt, Carol L. Folt, Celia Y. Chen, Bjoern Klaue, Joel D. Blum Jan 2002

Algal Blooms Reduce The Uptake Of Toxic Methylmercury In Freshwater Food Webs, Paul C. Pickhardt, Carol L. Folt, Celia Y. Chen, Bjoern Klaue, Joel D. Blum

Dartmouth Scholarship

Mercury accumulation in fish is a global public health concern, because fish are the primary source of toxic methylmercury to humans. Fish from all lakes do not pose the same level of risk to consumers. One of the most intriguing patterns is that potentially dangerous mercury concentrations can be found in fish from clear, oligotrophic lakes whereas fish from greener, eutrophic lakes often carry less mercury. In this study, we experimentally tested the hypothesis that increasing algal biomass reduces mercury accumulation at higher trophic levels through the dilution of mercury in consumed algal cells. Under bloom dilution, as algal biomass …

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Superfetation In Beef Cattle, Joel Andrew Carter Jan 2002

Superfetation In Beef Cattle, Joel Andrew Carter

LSU Doctoral Dissertations

Although superfetation has been reported in cattle and other species, there is considerable skepticism as to its existence due to the lack of clear evidence in these reports. Other explanations such as embryonic diapause or differential growth of twins have been suggested as more accurate descriptions of the cases reported as superfetation. The hypothesis of this study is that if a viable pregnancy can ensure maternal recognition in cattle, an asynchronous embryo can develop in a more chronologically advanced uterine environment. The objective was to produce superfetation by (1) ovulation induction and artificial insemination (AI) of pregnant cows and (2) …

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Evidence For Infanticide In Bottlenose Dolphins Of The Western North Atlantic, Dale G. Dunn, Susan G. Barco, D. Ann Pabst, William A. Mclellan Jan 2002

Evidence For Infanticide In Bottlenose Dolphins Of The Western North Atlantic, Dale G. Dunn, Susan G. Barco, D. Ann Pabst, William A. Mclellan

Biological Sciences Faculty Publications

Nine bottlenose dolphin (Tursiops truncatus) calves that stranded in Virginia in 1996 and 1997 died of severe blunt-force trauma. Injuries were concentrated on the head and chest and multiple rib fractures, lung lacerations, and soft tissue contusions were prominent. Skeletal and/or soft tissue trauma occurred bilaterally in all of the calves. One had a bite wound across the left mandible that exhibited deep punctures consistent with the tooth placement in an adult bottlenose dolphin. The lesions were not compatible with predation, boat strike, fisheries interactions, rough-surf injury, or blast injury. However, they were similar to traumatic injuries described in stranded …

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Determination Of Protein Profile And Presence Of Antibodies In Llama Seminal Plasma (Llama Glama), Francisco Flores Lópes Jan 2002

Determination Of Protein Profile And Presence Of Antibodies In Llama Seminal Plasma (Llama Glama), Francisco Flores Lópes

Theses and Dissertations

Internationally, Bolivia has the largest llama population followed by Peru. This makes our country a power in this renewable resource for working and generating economic development. This is mainly because of the quality of llama meat, which has nutritional properties superior to other animal species. The development and research in our country of llamas is not very significant. But in other countries advanced studies have been done for years, specifically in the area of reproduction, which represents problems for intensive repopulation because of singular characteristics of semen and copulation. The present research work was done at the UAC in Tiahuanacu …

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Cephalopod Fauna Of The Eastern Mediterranean, Alp Salman, Tuncer Katağan, Hüseyi̇n Avni̇ Benli̇ Jan 2002

Cephalopod Fauna Of The Eastern Mediterranean, Alp Salman, Tuncer Katağan, Hüseyi̇n Avni̇ Benli̇

Turkish Journal of Zoology

Studies on the cephalopods of Turkish coasts have been going on since 1988. As a result of these studies, a total of 43 species have been determined, comprising 11 species from the Sea of Marmara, 38 from the Aegean Sea and 24 from the Mediterranean Sea. With respect to other studies carried out excluding Turkish coasts, the eastern Mediterranean cephalopod fauna has increased to 51 species. Among the species determined, Ancistrocheirus lesueurii and Ancistroteuthis lichtensteini are new records for the eastern Mediterranean; Sepietta obscura, Ancistrocheirus lesueurii, Ancistroteuthis lichtensteini and Tremoctopus violaceus for the Aegean Sea; and Alloteuthis media, Rossia macrosoma …

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An Investigation On Fish Fauna Of The River Mert (Samsun), Selma Uğurlu (Helli̇), Nazmi̇ Polat Jan 2002

An Investigation On Fish Fauna Of The River Mert (Samsun), Selma Uğurlu (Helli̇), Nazmi̇ Polat

Turkish Journal of Zoology

This study was carried out between May 1999 and June 2000 in order to determine the fish species of the River Mert. In total, 244 individuals from different sampling stations were caught by electric shock, scoop nets, fish nets and fishing lines. In this study, 3 species and 2 subspecies were identified as belonging to 3 families (Cyprinidae, Cobitidae, Gobiidae). The systematic characteristics of fish species were explained. These characteristics were then compared with those in previous studies, and keys to identification were also presented.

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Effects Of Some Antimicrobial Agents On The Total Protein Content Of The Endoparasitoid Pimpla Turionellae L. (Hymenoptera: Ichneumonidae), Kemal Büyükgüzel Jan 2002

Effects Of Some Antimicrobial Agents On The Total Protein Content Of The Endoparasitoid Pimpla Turionellae L. (Hymenoptera: Ichneumonidae), Kemal Büyükgüzel

Turkish Journal of Zoology

The effects of thirteen antimicrobial agents that have different structures and modes of action on the total protein content of pupae of the hymenopterous endoparasitoid, Pimpla turionellae L., were investigated by rearing the larvae aseptically on chemically defined synthetic diets. These effects varied according to the their kind and dietary levels. The protein content of the pupae was significantly increased by penicillin, streptomycin, rifampicin, tetracycline hydrochloride, lincomycin hydrochloride, methyl p-hydroxybenzoate, cycloheximide and sodium benzoate, while it was decreased by nystatin. The other tested antimicrobial agents had no significant effects on the total protein content of the insect. Depending on dietary …

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Effects Of Antimicrobial Agents On The Survival And Development Of Larvae Of Pimpla Turionellae L. (Hymenoptera: Ichneumonidae) Reared On An Artificial Diet, Kemal Büyükgüzel, Şevki̇ Yazgan Jan 2002

Effects Of Antimicrobial Agents On The Survival And Development Of Larvae Of Pimpla Turionellae L. (Hymenoptera: Ichneumonidae) Reared On An Artificial Diet, Kemal Büyükgüzel, Şevki̇ Yazgan

Turkish Journal of Zoology

The effects of 13 antimicrobial agents that have different structures and modes of action, on the survival and development of the hymenopterous endoparasitoid, Pimpla turionellae L., were investigated by rearing the larvae aseptically on chemically defined synthetic diets. These effects varied according to their kind and dietary levels. The agents tested exerted their effects generally during the post-larval development of the insect. The post-larval survival and development were negatively affected by most of the agents tested at certain levels. The antimicrobial agents tested also affected the larval development but had no significant effects on the larval survival of the insect. …

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Effects Of Some Dna Gyrase Inhibitors On The Survival And Development Of Pimpla Turionellae (Hymenoptera: Ichneumonidae) Larvae Reared On An Artificial Diet, Kemal Büyükgüzel Jan 2002

Effects Of Some Dna Gyrase Inhibitors On The Survival And Development Of Pimpla Turionellae (Hymenoptera: Ichneumonidae) Larvae Reared On An Artificial Diet, Kemal Büyükgüzel

Turkish Journal of Zoology

The effects of novobiocin, nalidixic and oxolinic acids, which are potent antibacterial agents, on the survival and development of the hymenopterous endoparasitoid Pimpla turionellae L. were investigated alone by rearing the larvae aseptically on chemically defined synthetic diets. The percentage of fifth instar larvae was not significantly affected by the diets with different levels of the antibiotics used in the study. A diet containing the lowest level of novobiocin significantly increased the yields of pupae and adults. This level also significantly shortened the developmental time for fifth instar, but had no significant effect on the complete development of the larvae …

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Behavioural Abnormalities Of Cyprinion Watsoni On Exposure To Copper And Zinc, Syed Lal Shah Jan 2002

Behavioural Abnormalities Of Cyprinion Watsoni On Exposure To Copper And Zinc, Syed Lal Shah

Turkish Journal of Zoology

Cyprinion watsoni were exposed to three treatments of copper (0.03, 0.06, 0.12 mg/L) and three treatments of zinc (0.5, 3.0, 7.0 mg/L) for a period of one week to allow behavioural changes to be observed. None of the treatments caused mortality. Treatment with 0.03 mg Cu/L caused little change in fish behaviour; however, 0.06 mg Cu/L caused increased swimming activity and breathing movements. The highest treatment of copper (0.12 mg Cu/L) caused lethargy and loss of equilibrium in C. watsoni. Similarly, the lowest concentration of zinc (0.5 mg/L) caused no visible change in fish behaviour; however, with 3.0 mg Zn/L, …

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Detection Of Mutagenic-Carcinogenic Pollutants In Aquatic Systems Using Cytogenetic Methods In Fish, Mehmet Ulupinar, İbrahi̇m Okumuş Jan 2002

Detection Of Mutagenic-Carcinogenic Pollutants In Aquatic Systems Using Cytogenetic Methods In Fish, Mehmet Ulupinar, İbrahi̇m Okumuş

Turkish Journal of Zoology

In this study, the detection of mutagenic-carcinogenic pollutants in water by using cytogenetic methods in fish was examined along with the necessity of sister chromatid exchange (SCE), anaphase aberrations (AA) and micronucleus (MN) tests for chemical analysis in aquatic systems. It has been reported that central mudminnow (Umbra limi) appear to be the most suitable species for such analysis because of its large and fewer chromosomes (2n=22) and high cell division ratio. This species also has a wide distribution, and can be easily captured and held for study. In such analysis, intestines, stomach, kidney and gill tissues stand out as …

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A Preliminary Study On The Population Dynamics Parameters Of Whiting (Merlangius Merlangus Euxinus) In Turkish Black Sea Coastal Waters, Ali̇ İşmen Jan 2002

A Preliminary Study On The Population Dynamics Parameters Of Whiting (Merlangius Merlangus Euxinus) In Turkish Black Sea Coastal Waters, Ali̇ İşmen

Turkish Journal of Zoology

Some population parameters of the whiting (Merlangius merlangus euxinus) distributed along the Turkish Black Sea coast, were determined by using age-length data. The mean annual growth rate in length was found to be 3.7 cm. The maximum age group was determined as IX for females and VI for males. The seasonalized von Bertalanffy growth parameters in length were estimated to be L_o=39.1 cm, K = 0.15 year^{-1}, t_o = -1.53 year, C=0.23, t_s=0.48. There was a difference in growth rate between male and female fish. The females grow faster than males and reach a greater maximum length. Total mortality and …

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The Effects Of Phytoplankton Concentration, Size Of Mussel And Water Temperature On Feed Consumption And Filtration Rate Of The Mediterranean Mussel (Mytilus Galloprovincialis Lmk), İbrahi̇m Okumuş, Nadi̇r Başçinar, Mükerrem Özkan Jan 2002

The Effects Of Phytoplankton Concentration, Size Of Mussel And Water Temperature On Feed Consumption And Filtration Rate Of The Mediterranean Mussel (Mytilus Galloprovincialis Lmk), İbrahi̇m Okumuş, Nadi̇r Başçinar, Mükerrem Özkan

Turkish Journal of Zoology

The effects of phytoplankton concentration, size and water temperature on the feeding rate of the Mediterranean mussel (Mytilus galloprovincialis) from the Black Sea were investigated in the laboratory within a static system. Overall consumption (total cell/h) was significantly higher at the highest phytoplankton concentrations than at the lowest concentration (p

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Sds-Page Patterns Of Blood Serum Proteins In Some Species Of The Genus Meriones (Mammalia: Rodentia), Reyhan Çolak, Nuri̇ Yi̇ği̇t, Ercüment Çolak, Rolf Gattermann, Karsten Neumann Jan 2002

Sds-Page Patterns Of Blood Serum Proteins In Some Species Of The Genus Meriones (Mammalia: Rodentia), Reyhan Çolak, Nuri̇ Yi̇ği̇t, Ercüment Çolak, Rolf Gattermann, Karsten Neumann

Turkish Journal of Zoology

The blood serum proteins of Meriones meridianus, Meriones crassus, Meriones persicus and Meriones tristrami, all found in Turkey, along with domestic Meriones unguiculatus, which originated in Mongolia, were examined for the first time by SDS-PAGE. In the globulin zone, seven to ten bands were identified, one band in the post-albumin and albumin zones and one or two bands in the pre-albumin zone of five species of the genus Meriones. There was no diagnostic difference in the pattern of serum protein bands between species.

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