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Articles 2341 - 2370 of 2687
Full-Text Articles in Life Sciences
Correction Of A Unilateral Base Narrow Canine In A Dog Using An Orthodontic Device, Kürşat Özer
Correction Of A Unilateral Base Narrow Canine In A Dog Using An Orthodontic Device, Kürşat Özer
Turkish Journal of Veterinary & Animal Sciences
A 1-year-old male German Shepherd dog was brought in because its hard palate had been damaged by the left mandibular canine tooth. On inspection of the oral structure, lingual deviation to the interproximal area between the upper canine and lateral incisor of the left mandibular canine tooth and mild palatal trauma were seen. Under radiographic examination no traumatic root lesion or residue from the extracted deciduous teeth was determined. The mandibular canine tooth was corrected using a metal inclined plane. After 2 months the lower canine was tilted labially by sliding it along the slope as the dog closed its …
Feeding Biology Of Silurus Glanis (L., 1758) Living In Hirfanlı Dam Lake, Ni̇hal Doğan Bora, Ali̇ Gül
Feeding Biology Of Silurus Glanis (L., 1758) Living In Hirfanlı Dam Lake, Ni̇hal Doğan Bora, Ali̇ Gül
Turkish Journal of Veterinary & Animal Sciences
Stomach contents and feeding features of Silurus glanis living in Hirfanlı Dam Lake were investigated. Recognizable organisms were found in the stomachs of 91 Silurus glanis out of 162 caught between September 1996 and August 1997. The stomach contents of Silurus glanis and their levels were as follows: Gammarus (21.87%), Odonata (19.79%), Sander lucioperca (19.79%), Tinca tinca (18.76%), Silurus glanis (1.04%) and Gastropoda (1.04%). In addition, it was noted that 1.04% of the organisms found in the stomachs of Silurus glanis were Homoptera and 2.08% were the parasite Platyhelminthes.
A Karyological Analysis Of Garra Rufa (Heckel, 1843) (Pisces, Cyprinidae) From The Eastern Mediterranean River Basin In Turkey, Serap Ergene Gözükara, Tolga Çavaş
A Karyological Analysis Of Garra Rufa (Heckel, 1843) (Pisces, Cyprinidae) From The Eastern Mediterranean River Basin In Turkey, Serap Ergene Gözükara, Tolga Çavaş
Turkish Journal of Veterinary & Animal Sciences
A cytogenetic investigation on 12 Garra rufa (Heckel, 1843) specimens, from Müftü stream, was carried out by a slight modification of the conventional air-dried technique, using gill epithelial cells. The diploid chromosome number of this species was 2n = 44, comprising 22 metacentric and 20 submetacentric chromosomes and 2 acrocentric chromosome carrying satellites (NF = 85). A haploid idiogram, based on the chromosome measurements, was prepared. A detailed standard karyotype of G. rufa was established for the first time in this study.
Treatment Of Proximal Tibial Fractures By Cross Pin Fixation In Dogs, Mehmet Sağlam, Ümi̇t Kaya
Treatment Of Proximal Tibial Fractures By Cross Pin Fixation In Dogs, Mehmet Sağlam, Ümi̇t Kaya
Turkish Journal of Veterinary & Animal Sciences
The study material was composed of nine dogs 2.5-9-month-old which were brought to the Clinic of the Surgery Department, Faculty of Veterinary Medicine, University of Ankara between 1992 and 2001 with proximal tibial fractures diagnosed with clinical and radiographic examinations. The incidence of proximal tibial fractures was much lower than that of other tibial fractures in this period. Under the Salter-Harris classification, 2 cases were of type I, 5 cases were of type II and 2 cases had metaphyseal transversal fractures detected using radiographic and clinical examinations. For treatment of proximal tibial fractures in cases with dynamic growth periods, the …
Prevalence And Intensity Of Gyrodactylus Arcuatus Bychowsky, 1933 (Monogenea) Infestations On The Three-Spined Stickleback, Gasterosteus Aculeatus L., 1758, Ahmet Özer, Türkay Öztürk, M. Oğuz Öztürk
Prevalence And Intensity Of Gyrodactylus Arcuatus Bychowsky, 1933 (Monogenea) Infestations On The Three-Spined Stickleback, Gasterosteus Aculeatus L., 1758, Ahmet Özer, Türkay Öztürk, M. Oğuz Öztürk
Turkish Journal of Veterinary & Animal Sciences
Gyrodactylus arcuatus Bychowsky, 1933 was identified on the three-spined stickleback, Gasterosteus aculeatus L., 1758 in the present study, which was carried out between January and May 2000. A total of 151 fish specimens were examined. The infestation prevalence and mean intensity levels were 80.2% and 35.44 ± 8.87 parasites per fish, respectively. The infestation prevalence and mean intensity levels were highest in February and May, respectively. No statistically significant preference for either sex of fish was determined. The mean intensity of G. arcuatus was highest on the gills, followed by the fins and skin. Significant differences were observed in the …
Morphometric Structuring Of The Anchovy (Engraulis Encrasicolus L.) In The Black, Aegean And Northeastern Mediterranean Seas, Cemal Turan, Deni̇z Ergüden, Mevlüt Gürlek, Nuri̇ Başusta, Funda Turan
Morphometric Structuring Of The Anchovy (Engraulis Encrasicolus L.) In The Black, Aegean And Northeastern Mediterranean Seas, Cemal Turan, Deni̇z Ergüden, Mevlüt Gürlek, Nuri̇ Başusta, Funda Turan
Turkish Journal of Veterinary & Animal Sciences
The status of populations of anchovies in Turkish terrestrial waters was preliminarily investigated using morphometric characters with the truss network system. Samples were taken from the main fishing areas of each sea, comprising the central (Sinop) and eastern (Trabzon) Black Sea, the Aegean Sea (İzmir) and the eastern Mediterranean (İskenderun). Plotting discriminant functions 1 and 2, explaining 93% of between-group variability, revealed a high degree of dissimilarity among the anchovy samples, indicating that the anchovies in each sea represent different aggregations. The overall random assignment of individuals into their original group was high (80%). Pairwise comparisons using multivariate analysis of …
Pathological Findings In Acute Amitraz Intoxication In Mice, Ayhan Fi̇lazi̇, Tolga Güvenç, Cavi̇t Kum, Seli̇m Sekki̇n
Pathological Findings In Acute Amitraz Intoxication In Mice, Ayhan Fi̇lazi̇, Tolga Güvenç, Cavi̇t Kum, Seli̇m Sekki̇n
Turkish Journal of Veterinary & Animal Sciences
This study examined the pathological changes in tissues and organs with acute intoxications with amitraz and its veterinary medicinal formulation. In total 312 healthy white English mice (Mus musculus), 156 female and 156 male, were used for this purpose. The solutions were given to the mice by gavage at the following dosages: 500, 1000, 1500, 1800, 2200 or 2500 mg of technical amitraz/kg and 50, 100, 250, 500, 750 or 1000 mg of amitraz/kg in a veterinary formulation. There was an interval of 1 week after the administration of the study medication. Necropsies were performed immediately on the mice that …
Effect Of Dietary Probiotic Supplementation On Growth Performance In The Rock Partridge (Alectoris Graeca), Cavi̇t Arslan
Effect Of Dietary Probiotic Supplementation On Growth Performance In The Rock Partridge (Alectoris Graeca), Cavi̇t Arslan
Turkish Journal of Veterinary & Animal Sciences
This study was conducted to determine the effect of dietary probiotic supplementation on growth performance in the rock partridge. One hundred 1-day-old chicks were used. They were divided into 2 groups and each group was divided into 5 replicate groups containing 10 chicks. One group served as the control, while the other group was the treatment group fed 0.15% probiotic (Lactobacillus bulgaricus) in the diet. The experimental period was 12 weeks with the first 6 weeks as the starter period and the last 6 weeks as the grower period. There were no statistical differences between the groups in growth performance …
Follicular-Compact-Cellular Carcinoma In The Thyroid Gland Of A Dog, Ayhan Atasever, Yücel Çam, Fatma Uyanik
Follicular-Compact-Cellular Carcinoma In The Thyroid Gland Of A Dog, Ayhan Atasever, Yücel Çam, Fatma Uyanik
Turkish Journal of Veterinary & Animal Sciences
This case was determined accidentally in a 1.5-year-old, cross-breed male dog during a necropsy for an experimental study conducted in our laboratory, following a clinical examination as well as haematological, biochemical and urine analyses. The dog was clinically healthy. Haematological and biochemical parameters, except for a decrease in serum triiodothyronine (T_{3}), and urine analysis findings were within the reference range. A mass 3 x 4 x 3 cm in size and 22 g in weight that was observed in the thyroid gland located in the left cranioventral cervical region at the level of the larynx was investigated macroscopically and microscopically. …
Ornithobacterium Rhinotrachelae (Or) Infection, Nesri̇n Turan, Seyyal Ak
Ornithobacterium Rhinotrachelae (Or) Infection, Nesri̇n Turan, Seyyal Ak
Turkish Journal of Veterinary & Animal Sciences
Ornithobacterium rhinotracheale infection is characterized by respiratory disease, decreased growth and increased mortality in avians. Although a reasonably new infection, it has been found in many countries in a short period. In this article, this infection, which causes large financial losses in avian enterprises, was investigated.
Transfer Of Maternal Immunity In The Guppy, Poecilia Reticulata, Ayşegül Kubi̇lay, Mehmet Rüştü Özen
Transfer Of Maternal Immunity In The Guppy, Poecilia Reticulata, Ayşegül Kubi̇lay, Mehmet Rüştü Özen
Turkish Journal of Veterinary & Animal Sciences
An investigation was carried out to determine whether transmission of passive immunity from the mother to the fry occurred in the guppy, Poecilia reticulata. Female guppies were immunized by an intraperitoneal injection of formalin-killed Aeromonas hydrophila bacterin. Agglutinating antibody titers and the precipitating antibody in the body fluid of female guppies and their fry were investigated. The protection against the A. hydrophila pathogen by maternal immunity was also tested. Four weeks after immunization, 14 fry from immunized and nonimmunized females were challenged with 5-min exposure to a virulent A. hydrophila at dosages of 1 x 10^7 cfu/ml. Agglutinating antibody titers …
The Treatment Of Experimental Acute Ethylene Glycol (Antifreeze) Toxication Using 4-Methyl Pyrazol And Ethanol In Dogs, Vehbi̇ Güneş, Çeti̇nkaya Şendi̇l
The Treatment Of Experimental Acute Ethylene Glycol (Antifreeze) Toxication Using 4-Methyl Pyrazol And Ethanol In Dogs, Vehbi̇ Güneş, Çeti̇nkaya Şendi̇l
Turkish Journal of Veterinary & Animal Sciences
The effects of ethanol and 4-methyl pyrazole were investigated in the treatment of 30 dogs toxicated with antifreeze (AF). The AF toxication produced significant increases in blood urea, creatinin and potassium and a decrease in blood calcium levels. Calcium-oxalate monohydrate, which is pathognomic for AF toxication, was consistently seen in urine sediment. Ethanol was rarely effective on the multisystemic effects that occurred in dogs or ADH inhibition. CNS findings were also observed after ethanol administration. The results indicated that 4-MP treatment provided earlier and safer healing than ethanol. It was deduced that 4-MP + NaHCO_3 was more effective than ethanol …
Growth Properties Of Mirror Carp (Cyprinus Carpio L., 1758) Introduced Into Gelingüllü Dam Lake, Şeri̇fe Gülsün Kirankaya, Fi̇tnat Güler Ekmekçi̇
Growth Properties Of Mirror Carp (Cyprinus Carpio L., 1758) Introduced Into Gelingüllü Dam Lake, Şeri̇fe Gülsün Kirankaya, Fi̇tnat Güler Ekmekçi̇
Turkish Journal of Veterinary & Animal Sciences
Some growth properties of 407 specimens of the mirror carp population introduced into Gelingüllü Dam Lake between 1998 and 2000 were studied in order to determine changes in growth over time. The data obtained were compared with those of other populations of the same species in other regions of Turkey. The age of the mirror carp in Gelingüllü Dam Lake ranged between I and V. The results revealed that this species, having a length of 20.8 ± 0.8 cm and a weight of 229 ± 21 g at age I, may attain a length of 53.5 ± 3.8 cm and …
Determination Of The Quality Parameters Of Imported Mackerel Under Different Thawing Conditions, Sühendan Mol, Özkan Özden, Nuray Erkan, Taçnur Baygar
Determination Of The Quality Parameters Of Imported Mackerel Under Different Thawing Conditions, Sühendan Mol, Özkan Özden, Nuray Erkan, Taçnur Baygar
Turkish Journal of Veterinary & Animal Sciences
The quality of imported mackerel (Scomber scombrus Linnaeus, 1758) was examined and the effect of different thawing methods on the quality was determined. The frozen samples were taken from 3 points: the first depot, the second depot and the retail sellers. The study was carried out in duplicate. The quality of the samples was determined according to sensory, chemical and microbiological analyses. It was determined that the 3 different thawing procedures (in water, at room temperature and in a refrigerator) did not change the quality significantly. This study shows that the frozen mackerel was transported to the retailers and customers …
Evaluation Of The In Situ Degradation Kinetics Of Some Protein Sources Commonly Used In Ruminant Feeding, Suphi̇ Deni̇z, M. Aki̇f Karsli, Hüseyi̇n Nursoy, M. Sai̇t Kutlu
Evaluation Of The In Situ Degradation Kinetics Of Some Protein Sources Commonly Used In Ruminant Feeding, Suphi̇ Deni̇z, M. Aki̇f Karsli, Hüseyi̇n Nursoy, M. Sai̇t Kutlu
Turkish Journal of Veterinary & Animal Sciences
The aim of the study was to evaluate the in situ degradation kinetics of some commonly used protein sources (sunflower meal, cottonseed meal, and soybean meal). Three ruminally fistulated rams were utilized in the study. They were fed ground alfalfa and a mixture of concentrate (60% alfalfa and 40% mixture) at maintenance level. The Dacron bags used in the study had a 45 µ^2 pore size and internal dimensions of 15 x 7 cm. Feed samples were ground to pass through a 2 mm screen. Samples were incubated in the rumen of rams for 0, 2, 4, 8, 12, 24 …
Purification And Characterization Of Pyruvate Kinase From Normal And Tumor Breast Tissues, Seval Yilmaz, Sema Temi̇zer Ozan, İbrahi̇m Hani̇fi̇ Özercan
Purification And Characterization Of Pyruvate Kinase From Normal And Tumor Breast Tissues, Seval Yilmaz, Sema Temi̇zer Ozan, İbrahi̇m Hani̇fi̇ Özercan
Turkish Journal of Veterinary & Animal Sciences
The molecular weight and kinetic properties of pyruvate kinase purified from human normal and tumor breast tissues were studied and the activity levels of pyruvate kinase from normal and tumor breast tissues were compared. The presence of 2 forms of pyruvate kinase in human breast tissue was demonstrated by DEAE Sephadex A-50 chromatography. The molecular weight of subunits estimated by SDS-PAGE in forms I. and II. in normal breast tissue and in forms I. and II. in tumor breast tissue were 30,000 and 63,000 Da and 16,500 and 60,000 Da, respectively. It was found that the pyruvate kinase activity in …
Prevalence Of Leishmania Infantum And Dirofilaria Immitis Infection In Dogs In Aydın Province And The Town Of Selçuk, İzmir, Turkey, Hüseyi̇n Voyvoda, Serdar Paşa, Seray Özensoy Töz, Yusuf Özbel, Hati̇ce Ertabaklar
Prevalence Of Leishmania Infantum And Dirofilaria Immitis Infection In Dogs In Aydın Province And The Town Of Selçuk, İzmir, Turkey, Hüseyi̇n Voyvoda, Serdar Paşa, Seray Özensoy Töz, Yusuf Özbel, Hati̇ce Ertabaklar
Turkish Journal of Veterinary & Animal Sciences
The aim of this study was to determine the prevalence of Leishmania infantum and Dirofilaria immitis infection in dogs housed outdoors in Aydın province and Selçuk in western Turkey. Anti-Leishmania antibodies were evaluated in sera samples by IFA and ELISA techniques. The presence of D. immitis microfilariae was determined in blood samples by use of the modified Knott’s test. Using the IFA and ELISA on 158 dogs surveyed, 5 (3.2%) were positive for anti-Leishmania antibodies while 22 (13.9%) were found infected with D. immitis. Only 2 out of 5 seropositive dogs exhibited major signs of canine visceral leishmaniosis, and amastigotes …
Listeria Monocytogenes, Yersinia Enterocolitica And Salmonella Enteritidis In Quail Eggs, Özlem Turgay
Listeria Monocytogenes, Yersinia Enterocolitica And Salmonella Enteritidis In Quail Eggs, Özlem Turgay
Turkish Journal of Veterinary & Animal Sciences
The aim of this study was to determine the presence of Listeria monocytogenes, Yersinia enterocolitica and Salmonella enteritidis in 123 liquid whole quail eggs. The method suggested by USDA-FSIS was used for the isolation and identification of L. monocytogenes. S. enteritidis was identified and sero-grouped by co-agglutination test and slide agglutination test. Y. enterocolitica was isolated in Trypticase-Soy Broth, with bile-oxalate-sorbose medium for enrichment. Both enrichment cultures were plated on Yersinia Selective Agar Base containing cefsulodin, irgasan and novobiocin (CIN Agar). No Yersinia was detected among the natural flora of the quail eggs. Seven (5.69%) of 123 whole quail eggs …
Feed Value Of Cactus And Cactus Silage, Mustafa Çürek, Ni̇hat Özen
Feed Value Of Cactus And Cactus Silage, Mustafa Çürek, Ni̇hat Özen
Turkish Journal of Veterinary & Animal Sciences
The nutrient composition, and feed value of cactus were evaluated through total collection and nylon bag techniques. In the first trial conducted with 3 Chios rams, digestion coefficients of dry matter, organic matter, crude protein, ether extracts, crude fiber and nitrogen-free extracts of cactus leaves (cladodes) and cactus silage were found to be 57.57, 79.20, 72.69, 79.13, 27.95 and 84.14%; 57.32, 69.40, 33.21, 90.10, 13.08 and 78.45%, respectively. The contents of digestible protein, ether exctracts, fiber and nitrogen-free extracts (dry matter basis) were as 3.55, 1.61, 6.77 and 63.33%; 2.14, 1.78, 7.71 and 52.35%, respectively. Depending upon the data above, …
Determination Of Microbial Gas Production, Fermentation Kinetics And Digestibility Of Alternative Crop Silages, İsmai̇l Akyol, Emi̇n Özköse, Mehmet Sai̇t Eki̇nci̇
Determination Of Microbial Gas Production, Fermentation Kinetics And Digestibility Of Alternative Crop Silages, İsmai̇l Akyol, Emi̇n Özköse, Mehmet Sai̇t Eki̇nci̇
Turkish Journal of Veterinary & Animal Sciences
Microbial gas production (MGP), fermentation kinetics and DM loss of crop silages made from 7 different plant families (barley/pea, clover, grass, kale, lotus, lucerne, sainfoin) and 10 different refusals were determined. The pressure transducer technique (PTT) was used to measure the microbial gas production of fresh and ground silages and refusal samples at regular intervals throughout the 120 h incubation. The MGP of fresh and ground silages were similar (r^2 = 0.90). The maximum gas production was obtained from kale for ground and fresh silages whilst grass silage yielded the maximum gas pool for refusals. No differences were found between …
Is The Fluid Milk Subsector Competitive In Turkey?, Seli̇m Adem Hatirli
Is The Fluid Milk Subsector Competitive In Turkey?, Seli̇m Adem Hatirli
Turkish Journal of Veterinary & Animal Sciences
The significant increase in the concentration ratio in Turkey’s fluid milk market has heightened concern about the exercise of market power. During 1980-98, the 4-firm concentration ratio and Herfindahl index increased by 11% and 33%, respectively. In this study, we estimated the degree of imperfection in the fluid milk market at retail level using the New Empirical Industrial Organization approach during the period 1980-98. For this purpose, the demand equation and first-order-profit maximization condition, which allow the degree of market power to be determined, were estimated. Using 2-stage-least-square estimation, market power was found to be 0.11. This parameter shows that …
Size Composition, Growth Characteristics And Stock Analysis Of The Pikeperch, Sander Lucioperca (L. 1758), Population In Lake Eğirdir, İsmet Balik, Hidir Çubuk, Remzi̇ye Özkök, Rahmi̇ Uysal
Size Composition, Growth Characteristics And Stock Analysis Of The Pikeperch, Sander Lucioperca (L. 1758), Population In Lake Eğirdir, İsmet Balik, Hidir Çubuk, Remzi̇ye Özkök, Rahmi̇ Uysal
Turkish Journal of Veterinary & Animal Sciences
This study was conducted between March 2001 and February 2002 to investigate the size composition, growth characteristics and stock size of the pikeperch, Sander lucioperca (L. 1758), population of Lake Eğirdir. In the population, the rate of individuals more than 2 years of age and 20 cm was very low. The average length and weight of the commercial catch were also low. The length-weight relationship and von Bertalanffy growth equation were W = 0.006 L^{3.148} and L_t = 95.4*(1-e^{-0.0841(t+1.5638)}), respectively, and the average condition factor was 0.992. This last value is higher than those reported in other studies on the …
Dairy Cattle Farming In Kars District, Turkey: I. Characteristics And Production, Hi̇dayet Meti̇n Erdoğan, Mehmet Çi̇ti̇l, Vehbi̇ Güneş, Mustafa Saatci
Dairy Cattle Farming In Kars District, Turkey: I. Characteristics And Production, Hi̇dayet Meti̇n Erdoğan, Mehmet Çi̇ti̇l, Vehbi̇ Güneş, Mustafa Saatci
Turkish Journal of Veterinary & Animal Sciences
The objectives of the present study were to determine farm characteristics and production traits on dairy farms in Kars. A 2-stage stratified random sampling strategy was used to select localities (7) and farms (45). The study involved an interview with the farmers and regular visits to the farms. The survey identified important farm characteristics including demography, production and management practices. The results describe (a) farm demographics (number of family members, education of farmers, animal caretakers employed, types of herds, herd sizes, breeds, and age categories), (b) farm management practices; management at feeding (type, source, storage of feedstuffs, feeding, water supply …
Early Intervention For The Management Of Acute Low Back Pain: A Single Blind Randomised Controlled Trial Of Biopsychosocial Education, Manual Therapy And Exercise, Benedict Wand, Christien Bird, James H. Mcauley, Caroline J. Dore, Maureen Macdowell, Lorraine H. De Souza
Early Intervention For The Management Of Acute Low Back Pain: A Single Blind Randomised Controlled Trial Of Biopsychosocial Education, Manual Therapy And Exercise, Benedict Wand, Christien Bird, James H. Mcauley, Caroline J. Dore, Maureen Macdowell, Lorraine H. De Souza
Health Sciences Papers and Journal Articles
Design: A single blind randomised controlled trial comparing two models of care for patients with simple acute low back pain (ALBP).
Objectives: To compare two research-based models of care for ALBP, and investigate the effect of the timing of physical intervention. Summary of Background Data National guidelines offer conflicting information on the delivery of physical treatment in the management of ALBP. Review of guidelines suggests two different models of care. Direct comparisons between these models are lacking in the literature. The present study aims to compare these two approaches to the management of ALBP.
Method: Among 804 referred patients, 102 …
Field Evaluation Of Herbicides On Vegetables, Small Fruit, And Ornamental Crops 2003, Ronald E. Talbert, Brian V. Ottis, Mayank S. Malik, Andrew T. Ellis
Field Evaluation Of Herbicides On Vegetables, Small Fruit, And Ornamental Crops 2003, Ronald E. Talbert, Brian V. Ottis, Mayank S. Malik, Andrew T. Ellis
Arkansas Agricultural Experiment Station Research Series
Herbicide evaluation studies on vegetables, small fruit, and ornamental crops were conducted in 2003 at the Arkansas Agricultural Experiment Station in Fayetteville, Ark., and the Vegetable Substation near Kibler, Ark., in an effort to evaluate new herbicides, herbicide mixtures, and their application timings for weed control efficacy and crop tolerance. Results of these studies, in part, provide useful information to producers, fellow researchers, the Crop Protection Industry, and the IR-4 Minor Crop Pest Management Program in the development of potential new herbicide uses in vegetable, fruit, and ornamental production.
Arkansas Soybean Performance Tests 2003, D. G. Dombek, D. K. Ahrent, R. D. Bond, I. L. Eldridge
Arkansas Soybean Performance Tests 2003, D. G. Dombek, D. K. Ahrent, R. D. Bond, I. L. Eldridge
Arkansas Agricultural Experiment Station Research Series
Soybean cultivar performance tests are conducted each year in Arkansas by the University of Arkansas Division of Agriculture. The tests provide information to companies developing cultivars and/or marketing seed within the State and aid the Arkansas Cooperative Extension Service in formulating cultivar recommendations for soybean producers.
Development Of Chicken Polyclonal And Mouse Monoclonal-Based Enyzyme Immunoassays For The Detection Of Β-Cyclocitral In Catfish Pond Water, Cate Nakaweesa Munene
Development Of Chicken Polyclonal And Mouse Monoclonal-Based Enyzyme Immunoassays For The Detection Of Β-Cyclocitral In Catfish Pond Water, Cate Nakaweesa Munene
LSU Doctoral Dissertations
The Catfish industry faces a problem of off-flavors due to odorous compounds produced by cyanobacteria and blue-green algae. Beta-Cyclocitral imparts a hay-woody odor to pond water and fish tissues. At present there are no reliable pond treatment methods available to control these off-flavors. To monitor the levels of this compound for quality control, rapid, sensitive and inexpensive methods are needed. The major goal of this study was to develop enzyme-linked immunoflow assays based on monoclonal and polyclonal antibodies that are specific and sensitive enough to detect beta-cyclocitral in catfish pond water. Beta-Cyclocitral-PPD conjugate was prepared and used to immunize two …
Leptin In Horses: Influences Of Body Condition, Gender, Insulin Insensitivity, Feeding, And Dexamethasone, Joshua Allen Cartmill
Leptin In Horses: Influences Of Body Condition, Gender, Insulin Insensitivity, Feeding, And Dexamethasone, Joshua Allen Cartmill
LSU Doctoral Dissertations
The experiments described herein were designed to answer questions that arose from initially attempting to determine whether treatment with dexamethasone increased concentrations of leptin in geldings. Dexamethasone treatment did in fact increase leptin concentrations in mares, geldings, and stallions. Additional experiments were designed to determine leptin's interaction, not only with the adrenal axis, but with the thyroid axis, the growth hormone/insulin-like growth factor-1 axis, as well as glucose and insulin metabolism in geldings, mares, and stallions. During the course of these experiments, differences in leptin concentrations in the horse were attributed to degree of body condition, gender, and feeding time. …
Integration Of Management Tactics For The Rice Water Weevil Lissorhoptrus Oryzophilus Kuschel With Particular Emphasis On Use Of Plant Resistance (Tolerance), Li Zou
LSU Doctoral Dissertations
Studies were conducted to test the hypothesis, significant benefits can be achieved for the management of rice water weevil, Lissorhoptrus oryzophilus Kuschel, by the use of rice varieties with low levels of host plant resistance coupled with the judicious use of cultural practices and insecticides. Tolerant traits of a current commercial variety of rice, "Bengal", was manifested consistently over multiple years. Study on rice growth as effected by weevil injury showed that pruning of root systems by larvae of weevil resulted in a decrease in tiller number and shoot biomass of rice plants in the vegetative stage of growth. Yield …
Somatic Cell Interspecies Nuclear Transfer, Marina Julia Sansinena
Somatic Cell Interspecies Nuclear Transfer, Marina Julia Sansinena
LSU Doctoral Dissertations
The low efficiency of the nuclear transfer (NT) procedure requires large number of oocytes to produce embryos and live offspring. A series of experiments were conducted to evaluate the ability of the bovine cytoplast to reprogram nuclei from horses and llamas. In a preliminary study, equine oocytes from small (<20mm diameter) follicles were either pretreated with roscovitine or placed in maturation (IVM only) prior to NT. Roscovitine pretreatment did not improve nuclear maturation rates (roscovitine pretreatment 57% vs. IVM only 66%) and no fusion was obtained from roscovitine-pretreated oocytes after NT. Another preliminary study was conducted with the objective to produce llama NT embryos and to compare their development in two in vitro culture conditions (G1.2® vs. CR1aa). No difference was found in the number of embryos cleaved after 2 d of culture. This resulted in the first scientific report of somatic cell NT, in vitro culture and transfer of NT embryos in the llama. In the next experiment, adult horse and llama fibroblasts were injected into enucleated cow oocytes. The results showed the cow cytoplasm is capable of partially reprogramming nuclei from other species and support mitotic divisions. However, this study also showed a consistent embryonic developmental arrest at the 8- to 16- cell stage when horse or llama donor cells were used as donor nuclei. When a more closely related species of donor cell (banteng) and recipient oocyte (domestic cattle) were used for NT, no embryonic developmental arrest was found. Embryos progressed to achieve high blastocyst rates (banteng male cell line 28% vs. banteng female cell line 15%). Two banteng interspecies NT pregnancies were established and subsequently lost from the banteng male cell line. In the final study, the effect of a mixed mitochondrial population (heteroplasmy) on early embryonic development was investigated. Ooplasmic transfer performed in combination with NT procedure indicated presence of foreign mitochondria clustered in a small portion of the cytoplasm in early stages of embryo development. When goat ooplasm was transferred into interspecies (cow oocyte-goat donor cell) NT embryos, fusion and cleave rates were reduced suggesting an increased level of heteroplasmy or nuclear-ooplasmic incompatibilities.