Life Sciences Commons^™

Comparison Of The Performance Of Autumn And Spring Sowing Of Chickpeas In A Temperate Region, Sai̇m Özdemi̇r, Ufuk Karadavut

Turkish Journal of Agriculture and Forestry

The effects of autumn and spring sowing on chickpea yield were investigated by examining yield components in a 2-year (2000-2001 and 2001-2002 growing seasons) field experiment in a temperate region, in north-west Turkey. Twenty-one chickpea genotypes (2 registered varieties of winter type for the Mediterranean region and 19 breeding lines) were evaluated in 2 sowing seasons (autumn and spring). Autumn-sown crops were subjected to -2.1 °C and snow cover twice (2 and 4 days) in the first year and -7.6 °C and snow cover 3 times (8, 14 and 6 days) in the second year. All genotypes were resistant to …

Kinetics Of Nonenzymatic Browning Reaction In Citrus Juice Concentrates During Storage, Nuray Koca, Hande Selen Burdurlu, Feryal Karadeni̇z

Turkish Journal of Agriculture and Forestry

The kinetics of nonenzymatic browning in citrus juice concentrates (orange, lemon, grapefruit and tangerine) during 8 weeks of storage at 28, 37 and 45 ºC were investigated. Browning development was followed by measuring absorbance at 420 nm (A_{420}) and using CIE-Lab color system. Analysis of kinetic data from A_{420} values suggested a zero-order reaction for nonenzymatic browning, while changes in L* and b* parameters followed a first-order reaction. Activation energy for nonenzymatic browning determined by A_{420} values ranged from 17.60 to 35.27 kcal mol^{-1}, while those for L* and b* parameters were 6.67-28.99 kcal mol^{-1} and 15.38-34.2 kcal mol^{-1}, respectively. …

Hydrolysis Of Polysaccharides With 77% Sulfuric Acid For Quantitative Saccharification, Güneş Uçar, Mualla Balaban

Turkish Journal of Agriculture and Forestry

Classical standard hydrolysis of polysaccharides with 72% sulfuric acid was modified in 2 manners. In order to avoid treatment in an autoclave at 120 °C under pressure, wood or pulp material was first swollen in cold 77% acid followed by hydrolysis steps in diluted acid solutions. Further, the neutralization of the hydrolyzate with dilute barium hydroxide was carried out in heated mother liquor ensuring a crystalline precipitate of barium sulfate. Digestion enables the separation of clear aliquots by decantation in large amounts for analysis by HPLC. The modified procedure allows hydrolyses of polysaccharides with low losses as indicated by correction …

Measuring The Market Power Of The Banana Import Market In Turkey, Seli̇m Adem Hatirli, Eugene Jones, Ali̇ Riza Aktaş

Turkish Journal of Agriculture and Forestry

Banana production in Turkey represents a small fraction of that required to meet domestic consumption. Domestic consumption totaled 188,000 t in 2000, whereas production amounted to just 64,000 t, or 34% of consumption. The gap between consumption and production is made up by imports and 5 multinational firms control the flow of more than 80% of the global banana trade. Given this firm dominance in the world trade of bananas, oligopoly theory would suggest the presence of underlying structural forces that could facilitate price-enhancing market power. As such, this study develops an integrated trade and new empirical industrial organization (NEIO) …

Apple Grading Using Fuzzy Logic, İsmai̇l Kavdir, Daniel E. Guyer

Turkish Journal of Agriculture and Forestry

Classification is vital for the evaluation of agricultural produce. However, the high costs, subjectivity, tediousness and inconsistency associated with manual sorting have been forcing the post harvest industry to apply automation in sorting operations. Fuzzy logic (FL) was applied as a decision making support to grade apples in this study. Quality features such as the color, size and defects of apples were measured through different equipment. The same set of apples was graded by both a human expert and a FL system designed for this purpose. Grading results obtained from FL showed 89% general agreement with the results from the …

Detection Of Critical Control Points In White Cheese Production In Small Dairy Plants, Süreyya Saltan Evrensel, Seran Temelli̇, Şahsene Anar

Turkish Journal of Veterinary & Animal Sciences

In this study, which was conducted to detect the critical control points and to investigate the direct and cross-contamination sources in white pickled cheese production, 21 control points were examined for aerobe mesophilic counts, staphylococcus-micrococcus, coagulase-positive staphylococcus, enterobacteriaceae, coliform bacteria, E. coli, enterococcus, yeast and mould counts. It was determined that the high microbiological load of raw milk affected the microbiological quality of pasteurized milk negatively, and that the production pipe-line after pasteurization, and equipment such as vats, plastic wraps, pressing cloths, starter culture and the hands of the workers, were direct contamination sources. In addition, the hands of workers …

Serological And Microbiological Investigation On Turkey Rhinotracheitis Virus (Trtv) Infection Of Chickens And Turkeys, Yavuz Çokal, Ayşi̇n Şen

Turkish Journal of Veterinary & Animal Sciences

A total of 426 serum samples were examined from 9 broiler and 7 broiler breeder flocks showing clinical signs of swollen head syndrome (SHS). Turkey rhinotracheitis virus antibodies in 8 broiler flocks were between 31.8 and 75.9% and in broiler breeder flocks between 5.4 and 48.6%, with a commercial ELISA. Typical clinical symptoms were observed for SHS in broilers and broiler breeders. During the study, turkey flocks showing clinical signs were not detected. The antibodies to TRTV were between 5.5 and 80.0% in 7 out of 10 broiler flocks, and between 20.0 and 57.1% in 3 out of 4 fattening …

The Effects Of Maturity On Range Quality And Animal Performance, M. Aki̇f Karsli, Suphi̇ Deni̇z, Hüseyi̇n Nursoy, Ni̇hat Denek, Hakki Akdeni̇z

Turkish Journal of Veterinary & Animal Sciences

The objective of this study was to determine the effects of maturity on the range quality and weight gain of male and female lambs, and the time at which supplementation is needed. The experiment was conducted at TİGEM Altındere Agricultural experiment station. At the start of the grazing season, four 4-m^2 areas from 3 different (expected to be heavily grazed) locations of range were excluded from grazing with cages. Dry matter (DM) yield and DM loss due to grazing at different periods of the grazing season were determined from these areas. Forage samples were collected from grazed and ungrazed areas …

Controlling The Breeding Season Using Melatonin And Progestagen In Kıvırcık Ewes, Huri̇ye Horoz Kaya, Güven Kaşikçi, Kemal Ak, Serhat Alkan, Cumhur Sönmez

Turkish Journal of Veterinary & Animal Sciences

The effect of melatonin and progestagen sponge administrations separately and together on the reproductive performance at the onset of the breeding season were investigated in Kıvırcık ewes. On June 22, to 40 anoestrous and non-lactating ewes were administrated melatonin (Regulin) implants. On July 14, progestagen (Synchron) sponges were inserted in 20 of these ewes and in 20 other ewes. They were removed 14 days later and on the day of removal the ewes were given 600 I.U. pregnant mare's serum gonadotrophin (PMSG). The other 20 ewes served as controls. Rams were introduced on July 28. The lambing percentages of the …

Cattle Rumen Tissue Arginase And Molecular Weights Of Its Subunits, Mi̇ne Eri̇şi̇r, Sema Temi̇zer Ozan

Turkish Journal of Veterinary & Animal Sciences

The arginase was partially purified from cattle rumen tissue and its properties were investigated and thereafter compared with those of other tissue arginases. The specific activity of the purified enzyme was found about 150 times greater than that of the crude rumen homogenate. The molecular weight of native arginase, estimated by gel filtration on a Sephadex G-150 column, was 122 500 ± 2500 and those of subunits of the enzyme, estimated by SDS-PAGE and gel filtration on a Sephadex G-100 column, were 44 000 ± 1000 and 34 500 ± 500. This indicates that the native enzyme is a trimer …

Effects Of Cadmium On Uterine Contractions In Different Species In Vitro, Haki̇ Kara, Kadi̇r Servi̇, Yaşar Akar

Turkish Journal of Veterinary & Animal Sciences

The aim of this study was to examine the effects of cadmium on oxytocin-induced myometrium contractions in rats, cows and cats in vitro. The frequency was 12.20 ± 1.2, 11.25 ± 2.7 and 10.70 ± 2.5/10 min, respectively, after 0.01 mM oxytocin induced with myometrial samples in rats, cows and cats. The peak amplitude was 3.84 ± 0.50, 3.44 ± 0.65 and 3.35 ± 0.45 g, respectively, after oxytocin induction. The frequency and peak amplitude decreased after the addition of 0.01 mM cadmium chloride (CdCl_2). The frequency was 1.2 ± 0.4 (p < 0.001), 2.5 ± 0.5 (p < 0.001) and 2.0 ± 0.6(p < 0.001), respectively, and the peak amplitude was 0.7 ± 0.3 (p < 0.001), 1.2 ± 0.2 (p < 0.001) and 0.8 ± 0.4 g (p < 0.001), respectively, in rat, cow and cat myometrium. Finally, the myometrium contractions were completely inhibited in the three species. In conclusion, the effects of cadmium may inhibit both calcium channels and the intracellular-induced mechanism.

The Effect Of Replacing Different Levels Of Sorghum Vulgare With No Bran In Place Of Barley On Fattening Performance And Wool Quality In Akkaraman Lambs, Hali̇t İmi̇k, Şaki̇r Doğan Tuncer, Meli̇k Aytaç, Ayli̇n Aylanç

Turkish Journal of Veterinary & Animal Sciences

In this study, the effects of different levels (0%, 8%, 16%, 23% and 32%) of Sorghum vulgare (0.7%) containing low tannen added to the rations of lambs in place of barley on live weight gain, concentrate consumption, feed efficiency, digestibility of total dry matter of feeds and wool quality in lambs were examined. Forty-five 2.5-month-old Akkaraman lambs were used in the study. The experiment lasted 56 days. The groups were fed 71% barley (control group), 62% barley + 8% sorghum (group 1), 53% barley + 16% sorghum (group 2), 48.3% barley + 23% sorghum (group 3), and 41% barley + …

The Relationship Between The Stages Of The Sexual Cycle, The Pregnancy And Postpartum Periods And Vaginal Flora In Kangal Breed Bitches, Murat Findik, Ni̇l Maral, Oktay Keski̇n, Hakan Kalender, Jale Erdeğer, Seli̇m Aslan

Turkish Journal of Veterinary & Animal Sciences

This study was performed on females of the Kangal Breed (Turkish Anatolian Shepherd Dog) with the aim of determining the relationship between the stages of the sexual cycle and vaginal flora. The stages of the cycle in Kangal bitches (n= 16) were determined by performing vaginoscopic, vaginal cytologic and ultrasonographic checks at regular intervals and examining vaginal swab samples bacteriologically. The swab samples were inoculated onto 7% sheep blood agar and incubated for 18-24 h at 37 ºC and total counts of the resulting colonies were evaluated. In addition, inoculations were made onto 7% sheep blood agar, PPLO agar, Columbia …

The Effects Of Vitamin E Supplementation On The Myofibrillar Protein Of Male Morkaraman Lambs, Muhammet İrfan Aksu, Nesi̇mi̇ Aktaş, Mükerrem Kaya, Muhli̇s Maci̇t

Turkish Journal of Veterinary & Animal Sciences

In this study, the effect of vitamin E usage (75 days, 45 mg/day of vitamin E (DL-\alpha tocopheryl acetate)) on the myofibrillar proteins in male Morkaraman lamb meat was investigated. SDS-PAGE gels indicated that vitamin E supplementation to the diet did not have any effect on actin and myosin; however it had a fractional effect on tropomyosin. For pH values, no differences were observed between the control and vitamin E supplemented groups.

Survival Of Yersinia Enterocolitica During The Manufacture And Ripening Of Mihalıç Cheese, Mehmet Kurtuluş Cem Şen, Seran Temelli̇, Süreyya Saltan Evrensel

Turkish Journal of Veterinary & Animal Sciences

The survival of Yersinia enterocolitica strain 0:9 was investigated during the manufacturing and ripening of Mihalıç cheese produced from raw milk. Mihalıç cheese was produced after inoculating 10^5 cfu/ml of Y. enterocolitica strain 0:9 into raw milk. All cheese samples were ripened at + 4 °C for 30 days in 18 to 22% of brine. Samples taken from raw milk, scalded and strained curd, and cheese on days 1, 3, 5, 8, 15 and 21 of the ripening process were analyzed for Y. enterocolitica, pH values and salt content. In raw milk, where initial inoculated Y. enterocolitica counts were 10^5 …

The First Giardia Infection In Cattle Gall Bladder, Serpi̇l Değerli̇, Semra Özçeli̇k

Turkish Journal of Veterinary & Animal Sciences

Giardia is a ubiquitously distributed flagellate protozoon that inhabits the small intestine of its host. In this paper, Giardia infection is reported in the gall bladder of an adult cow. Faecal samples from asymptomatic dairy cows and calves from several farms in Zara, Sivas, were studied by direct examination and the zinc sulphate flotation techniques. No Giardia cysts were found in 106 samples. In addition, the gall bladders of cattle provided from the slaughterhouse in Sivas were tested by direct and zinc sulphate flotation technique examination. Giardia trophozoites were found in 1.7% of the 56 gall bladders tested. This is …

Some Microbiological And Chemical Properties Of Bologna-Type Sausage Samples From Different Brands, Güzi̇n Apaydin, Zi̇ya Gökalp Ceylan, Mükerrem Kaya

Turkish Journal of Veterinary & Animal Sciences

In this study, the microbiological and chemical quality of bologna-type sausage samples from 4 different brands (A,B,C,D) sold in Erzurum markets was determined. Microbiological analysis showed that while the total aerobic mesophilic bacteria numbers were

Effect Of Steam And Acid Treatment On The Feed Value Of Lentil Straw, Hati̇ce Kalkan, Ali̇ Karabulut

Turkish Journal of Veterinary & Animal Sciences

This research was carried out to determine the possibilities of improving the feed value of lentil straw with steam and acid treatment. Lentil straw (Lens culinaris M.) was used as feed material and three 3-year-old, Kıvırcık rams fitted with rumen cannula were used as the animal material. Lentil straw was impregnated with different concentrated H_2SO_4 solutions, and then autoclaved at different periods and temperatures. After these treatments, the nutrient contents and cell wall components of the lentil straw were determined, and rumen degradability characteristics were determined with the nylon bag technique and gas production technique. In conclusion, higher cell wall …

Studies On The In Vitro Maturation Of Cat Oocytes, Mi̇that Evecen, Hatem Atalla, Sema Bi̇rler, Alper Baran, Kemal Ak

Turkish Journal of Veterinary & Animal Sciences

The aim of the present study was to investigate the effects of gonadotrophin and Bovine Serum Albumin (BSA) supplemented Synthetic Oviduct Fluid (SOF) and Ham's F-10 media on the in vitro maturation of cat oocytes. Oocytes collected from spayed stray queens served as the material of the study. The ovaries were brought to the laboratory within 2 h in PBS solution at 38 °C. Recovered oocytes were divided into two groups (Group 1: SOF + 0,4% BSA + 10 µg/ml FSH + 10 µg/ml LH, group 2: Ham's F-10 + 0,4% BSA + 10 µg/ml FSH + 10 µg/ml LH) …

Hepatorenal Syndrome And Efficiency Of Aldosterone Receptor Blockade On Hepatorenal System And Systemic Hemodynamics In Dogs With Experimentally Induced Hepatic Cirrhosis, Remzi̇ Gönül, Utku Bakirel, Abdullah Kayar, Yücel Meral, Mehmet Erman Or, Gülbi̇n Şennazli, Aydin Gürel, Emi̇ne Akdeni̇zli̇

Turkish Journal of Veterinary & Animal Sciences

In this study, the clinical signs of hepatorenal syndrome that occurs during hepatic cirrhosis were investigated and a variety of diagnosis and therapy methods were investigated in the experimentally ligated bile ducts of dogs. The test group with ligated bile ducts (n = 14) and the sham operated control group (n = 14) were divided into 2 sub groups and administered a derivative of spironalactone (Aldoctan® tablet), an antagonist of the aldosteron receptor, at 1.5 mg/kg daily for 5 weeks. Hepatorenal changes and the systemic effects of the drug were determined by comparing the control and test groups during the …

Effects Of Pesticides And Their Combinations On Human Fibroblast Cells, Yijun Deng

Dissertations and Theses @ UNI

Pesticides are widely used in Iowa due to its primarily agricultural economy. Many studies have shown that the water sources in Iowa are contaminated by multiple pesticides. Most of the information about the adverse human health effects due to such environmental contaminants comes from studies that focus on exposure to single rather than multiple pesticides. Additionally, many of the environmental regulations regarding levels of pesticide contamination refer only to single, individual pesticides. Many questions remain about the human health effects of exposure to pesticide combinations. This study attempts to understand the effects of pesticide combinations on human cells. A cell …

Angiotensin Ii Enhances Adenylyl Cyclase Signaling Via Ca2+/Calmodulin. Gq-Gs Cross-Talk Regulates Collagen Production In Cardiac Fibroblasts, Rennolds S. Ostrom, Jennifer E. Naugle, Miki Hase, Caroline Gregorian, James S. Swaney, Paul A. Insel, Laurence L. Brunton, J. Gary Meszaros

Pharmacy Faculty Articles and Research

Cardiac fibroblasts regulate formation of extracellular matrix in the heart, playing key roles in cardiac remodeling and hypertrophy. In this study, we sought to characterize cross-talk between Gq and Gs signaling pathways and its impact on modulating collagen synthesis by cardiac fibroblasts. Angiotensin II (ANG II) activates cell proliferation and collagen synthesis but also potentiates cyclic AMP (cAMP) production stimulated by β-adrenergic receptors (β-AR). The potentiation of β-AR-stimulated cAMP production by ANG II is reduced by phospholipase C inhibition and enhanced by overexpression of Gq. Ionomycin and thapsigargin increased intracellular Ca2+ levels and potentiated isoproterenol- and forskolin-stimulated cAMP production, whereas …

Thermal Time: Body Size, Food Quality And The 10c Rule, Eric Charnov, James Gillooly

Biology Faculty & Staff Publications

Developmental rates of ectotherms (y) are often linearly related to temperature (Tc in C) within some biologically relevant range of temperatures as y = (1/S)(Tc - Tb), where Tb is the estimated temperature at zero development, and the thermal constant S is the development time multiplied by the temperature above Tb (i.e. degree days above Tb). Among similar species, it has been widely shown that S and Tb are negatively related across environments, that S is positively related to body size, and that Tb is independent of body size but increases with mean environmental temperature. Here we present a model …

Isolation And Characterisation Of Microsatellites In The Asian Arowanas, Scleropages Formosus, Janethi Sivananthan

Student Works (2000-2009)

The Asian Arowana (Scleropages /ormosusu) is a primitive freshwater fish form the Jurassic era. It is very hardy and can live a good half century. Its low fecundity rate (about 30 eggs per batch), coupled with habitat degradation, threaten the future survivability of this fish (Khan et al., 1996). It was once close to extinction. In this study, microsatellites were used to study the allele frequencies, heterozygosity as well as the genetic differences among varieties. To identify microsatellite loci without the expense of library screening, a new strategy has been proposed by Fisher et al. (1996). This approach, called the …

The Economic Value Of Tourism And Recreation In Forested Areas Of Western Australia, Rachel Goff

Theses: Doctorates and Masters

In recent years, natural area tourism has been presented as a more profitable, labour intensive and environmentally sound industry than the traditional extractive industries which have resulted in the depletion of primary resources in many countries (Burr, 1995). However, in order for economic returns from tourism to be maintained over a long period of time, investment in resources and infrastructure that support and encourage sustainable tourism and recreation activity in natural areas is required. The key to sustainability is maintaining the capital stock of resources (Garrod & Fyall, 1998; Russell, 2001). In a society driven by economics, resources are allocated …

Foraging Ecology And Habitat Selection Of The Western Yellow Robin (Eopsaltria Griseogularis) In A Wandoo Woodland, Western Australia : Conservation Ecology Of A Declining Species, Jarrad A. Cousin

Theses: Doctorates and Masters

This study examined the foraging ecology and habitat selection of the Western Yellow Robin in Wandoo Woodland at Dryandra Woodland, Western Australia. The foraging ecology component was comprised of an examination of foraging behaviour, perch-use selection and pounce-site characteristics. The habitat selection component was comprised of an examination of habitat characteristics of site occupancy and general nesting ecology. The implications of current management at Dryandra Woodland to the ecology of the Western Yellow Robin are discussed in reference to the findings of the present study. Ground-pouncing was the dominant foraging behaviour throughout all seasons, with dead branches of live subcanopy …

Embryo And Gamete Development Upon Exposure To Cca Components: Cro3, Cuo, And As2o5, Nerbana Talaat-Elsebaei Mahmoud

Theses and Dissertations in Biomedical Sciences

Production of functional gametes and healthy embryos is essential for proliferation of all vertebrates, especially humans. Many compounds have toxic effects on developing gametes and embryos among which are chromium trioxide (CrO₃), cupric oxide (CuO) and arsenic pentaoxide (As₂O₅) as a mixture (CCA) or individually. Controversy surrounding the safety of CCA-treated wood centers primarily on the toxicity of its components and the potential for these metals to be released from the wood.

The aim of this research is to test the hypothesis that CCA components have deleterious effects on embryo development, oocyte maturation and …

Keberkesanan Latihan Bebanan Terhadap Peningkatan Kuasa Kaki Pelajar-Pelajar Perempuan Tingkatan 4, Ying Gay Tan

Student Works (2000-2009)

Tujuan Kajian ini dijalankan adalah untuk mengkaji kesan latihan bebanan terhadap peningkatan Kuasa kaki pelajar-pelajar perempuan berumur 16 tahun (tingkatan 4) dalam sesuatu program latihan. Kajian latihan bebanan adalah berfokus pada kuasa kaki. Kajian ini melibatkan seramai 62 orang subjek perempuan (N=62) dari populasi 134 pelajar Tingkatan 4 yang sedang menuntut di sebuah sekolah di Kuala Kubu Bharu. Dari empat buah kelas Tingkatan 4, dua kelas dipilih secara rawak. Satu kelas dipilih secara rawak untuk dijadikan Kumpulan Kawalan iaitu 28 subjek (N=28) dan satu lagi kelas dijadikan Kumpulan Rawatan iaitu 34 subjek (N=34 ). Kaedah 'intact sampling' digunakan dimana semua …

The Effects Of Student Manipulated Lewis Structure Models On Chemistry Achievement According To Cognitive Level, Kimberly M. Ross

Dissertations and Theses @ UNI

The purpose of this study was to determine if there was a correlation between teaching method or cognitive development and achievement in a unit on Lewis electron dot structures. Forty-six students were taught a unit on Lewis electron dot structures using the traditional paper and pencil method. Thirty-eight students were taught the same unit using a manipulative model instead of the traditional method. Both groups of students were given pre and post-tests on Lewis electron dot structures and their gains after instruction were measured. The Group Assessment of Logical Thinking measured student's cognitive level. Students were categorized as concrete, transitional …

A Major Qtl For Common Bacterial Blight Resistance Derives From The Common Bean Great Northern Landrace Cultivar Montana No. 5, Phillip N. Miklas, Dermot Coyne, Kenneth F. Grafton, Nedim Mutlu, Jim Reiser, Dale Lindgren, Shree Singh

Department of Agronomy and Horticulture: Faculty Publications

Knowledge of the evolutionary origin and sources of pest resistance genes will facilitate gene deployment and development of crop cultivars with durable resistance. Our objective was to determine the source of common bacterial blight (CBB) resistance in the common bean Great Northern Nebraska #1 (GN#1) and GN#1 Selection 27 (GN#1 Sel 27). Several great northern cultivars including GN#1, GN#1 Sel 27, and Montana No. 5 (the female parent of the common x tepary bean interspecific population from which GN #1 and GN # 1 Sel 27 were derived) and known susceptible checks were evaluated for CBB reaction in field and …