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2006

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Articles 571 - 590 of 590

Full-Text Articles in Animal Sciences

The Growth And Survival Characteristics Of Lambs Produced By Commercial Crossbreeding Kıvırcık Ewes With F_2 Rams With The German Black-Headed Mutton Genotype, Bülent Eki̇z, Ahmet Altinel Jan 2006

The Growth And Survival Characteristics Of Lambs Produced By Commercial Crossbreeding Kıvırcık Ewes With F_2 Rams With The German Black-Headed Mutton Genotype, Bülent Eki̇z, Ahmet Altinel

Turkish Journal of Veterinary & Animal Sciences

This study was conducted to compare the growth and survival characteristics of crossbred lambs produced by mating Kıvırcık ewes with German Black-Headed Mutton (GBM) x Kıvırcık (F_2) rams, GBM x Merino (F_2) rams, as well as the growth and survival characteristics of purebred Kıvırcık lambs. The data were obtained from 59 (GBM x Kıvırcık) x Kıvırcık, 59 (GBM x Merino) x Kıvırcık, and 60 purebred Kıvırcık lambs. The birth weights of (GBM x Kıvırcık) x Kıvırcık, (GBM x Merino) x Kıvırcık, and purebred Kıvırcık lambs were 4.08, 4.32, and 3.85 kg, respectively. The differences of birth weight between the genotype …

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In Vitro Effects Of Some Antibiotics On Glutathione Reductase Obtained From Chicken Liver, Hülya Demi̇r, Mustafa Erat, Hali̇s Şaki̇roğlu Jan 2006

In Vitro Effects Of Some Antibiotics On Glutathione Reductase Obtained From Chicken Liver, Hülya Demi̇r, Mustafa Erat, Hali̇s Şaki̇roğlu

Turkish Journal of Veterinary & Animal Sciences

Glutathione reductase (GR) is important in maintaining high levels of reduced glutathione in cells. The enzyme is inhibited by some drugs used in antimicrobial chemotherapy. The effects of some antibiotics on GR activity were investigated in this study. At first, the enzyme, having a specific activity of 88.28 EU/mg proteins, was purified 1636-fold with a yield of 35%. Purity of the enzyme was checked by means of sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE). Activity of the enzyme was determined spectrophotometrically at 340 nm and in vitro effects of ofloxacin, levofloxacin, cefazolin, and cefepime were determined. The antibiotics used in …

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Treatment Of Infertile Cows: Efficacy Of Pgf_{2\Alpha} And Gentamicin Or Their Combination In A Prid Regime, Yavuz Öztürkler, Ömer Uçar Jan 2006

Treatment Of Infertile Cows: Efficacy Of Pgf_{2\Alpha} And Gentamicin Or Their Combination In A Prid Regime, Yavuz Öztürkler, Ömer Uçar

Turkish Journal of Veterinary & Animal Sciences

The efficacy of PGF_{2\alpha} and intrauterine gentamicin or their combination in a progesterone releasing intravaginal device (PRID) regime was investigated for treatment of infertility in cows. From 46 infertile cows, body condition scores (BCSs) were recorded and the cows were then divided into 4 experimental groups according to the synchronisation protocol and intrauterine gentamicin administration as follows: i) PRID (1.55 g of progesterone and 10 mg of oestradiol benzoate) for 12 days plus artificial insemination (AI) at 48 and 72 h (group 1, n = 8), ii) PRID for 12 days plus an i.m. injection of 0.150 mg of cloprostenol …

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Effects Of Microwave Cooking On The Infectivity Of Toxocara Canis (Werner, 1782) Larvae In The Liver Of Paratenic Host Mice, Handan Çeti̇nkaya, Ayşen Gargili, Kemal Altaş Jan 2006

Effects Of Microwave Cooking On The Infectivity Of Toxocara Canis (Werner, 1782) Larvae In The Liver Of Paratenic Host Mice, Handan Çeti̇nkaya, Ayşen Gargili, Kemal Altaş

Turkish Journal of Veterinary & Animal Sciences

This study was conducted to determine the effect of microwave cooking on the infective stages of Toxocara canis larvae found in the tissues of paratenic hosts. For this purpose, 3 series of experiments were carried out using a household microwave oven (2450 MHz, model: Arçelik MD551) at medium, medium-high and high levels. A total of 54 mice were used in the 3 experiments. Toxocara canis eggs were collected from the faeces of naturally infected dogs and incubated at room temperature for 4 weeks for development of infective larvae in eggs. In the first experiment, 6 mice were each infected with …

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Effect Of Eimeria Adenoeides Challenge Upon The Course Of An Experimental Salmonella Enteritidis Infection In Turkey Poults, Ventsislav Koinarski, Mihni Lyutskanov, Valentina Urumova Jan 2006

Effect Of Eimeria Adenoeides Challenge Upon The Course Of An Experimental Salmonella Enteritidis Infection In Turkey Poults, Ventsislav Koinarski, Mihni Lyutskanov, Valentina Urumova

Turkish Journal of Veterinary & Animal Sciences

The aim of the present study was to perform a controlled experiment in order to evaluate the predisposing role of Eimeria adenoeides invasion on the appearance, development and severity of a Salmonella Enteritidis infection, with both infectious agents being field isolates obtained from spontaneous cases of the disease. Furthermore, we aimed to examine the principal epidemiological parameters of the mixed infection. The effect of an experimental Eimeria adenoeides invasion upon an artificial S. Enteritidis infection was studied in 160 turkey poults. The birds were divided into 4 experimental groups. Group 1 was infected with Eimeria adenoeides. Group 2 was infected …

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Effect Of Energy Deficiency During Late Pregnancy In Chios Ewes On Free Fatty Acids, \Beta-Hydroxybutyrate And Urea Metabolites, Mehmet Hani̇fi̇ Durak, Ayşen Altiner Jan 2006

Effect Of Energy Deficiency During Late Pregnancy In Chios Ewes On Free Fatty Acids, \Beta-Hydroxybutyrate And Urea Metabolites, Mehmet Hani̇fi̇ Durak, Ayşen Altiner

Turkish Journal of Veterinary & Animal Sciences

Pregnant Chios ewes with high twin-lambing rates fed a low energy ration during the final periods of pregnancy were studied. The aim of this study was to determine whether pregnancy toxemia occurred in these ewes by monitoring the changes in the concentrations of serum free fatty acids (FFAs), plasma \beta -hydroxybutyrate (\beta -HB) and urea. Thirty-eight Chios ewes were used. The animals were divided into 3 groups: pregnant normal energy (PNE), pregnant low energy (PLE), and non-pregnant normal energy (N-PNE). On day 105 of gestation, the animals were begun to be fed with the treatment rations. The feeding regime was …

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Pathological And Immunohistochemical Investigation Of Naturally Occurring Systemic Candida Albicans Infection In Dogs, Recai̇ Tunca, Tolga Güvenç, Rifki Haziroğlu, Lale Ataseven, Hasan Özen, Ni̇hat Toplu Jan 2006

Pathological And Immunohistochemical Investigation Of Naturally Occurring Systemic Candida Albicans Infection In Dogs, Recai̇ Tunca, Tolga Güvenç, Rifki Haziroğlu, Lale Ataseven, Hasan Özen, Ni̇hat Toplu

Turkish Journal of Veterinary & Animal Sciences

Systemic candidiasis is a rare disease of animals. In this study, the clinical course, and cultural and pathological findings of systemic candidiasis are described and presumed predisposing factors are investigated in 3 dogs. Pathologically, pyogranulomatous lesions in various organs were present in all dogs. Blastospores, pseudohyphae, and true hyphae of Candida albicans were observed with periodic acid Schiff, Gomori's methenamine silver, and immunohistochemistry. Administrations of broad-spectrum antibiotics and corticosteroids and, in one dog, parvoviral infection were thought to be predisposing factors leading to opportunistic infection. The combined effect of immunosuppressants and antibiotics might have led to Candida colonization and dissemination …

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Determination Of Optimum Pre-Slaughter Feed Withdrawal Time In Broiler Chickens And Its Effect On Meat Yield, Microbiological Composition Of Gut Content And Microbiological Quality Of The Carcass, Erol Şengör, Mehmet Yardimci, Belgi̇n Siriken, Zehra A. Bozkurt, Mustafa Tekerli̇, Beytullah Kenar, E. Hesna Şahi̇n Jan 2006

Determination Of Optimum Pre-Slaughter Feed Withdrawal Time In Broiler Chickens And Its Effect On Meat Yield, Microbiological Composition Of Gut Content And Microbiological Quality Of The Carcass, Erol Şengör, Mehmet Yardimci, Belgi̇n Siriken, Zehra A. Bozkurt, Mustafa Tekerli̇, Beytullah Kenar, E. Hesna Şahi̇n

Turkish Journal of Veterinary & Animal Sciences

This study aimed to determine the optimum time of pre-slaughter feed withdrawal for broiler chickens to maintain profitable and hygienic meat production and to determine its effect on the meat yield, microbiological structure of gut content and microbiological quality of the carcass. A total of 100 birds were allocated to 4 identical 2 m^2 pens in a commercial broiler house, each pen housing 25 birds. The feed withdrawal durations were 18 h (group 1), 12 h (group 2), 6 h (group 3) and 0 h (group 4). The percentage live weight loss increased as the feed withdrawal period increased (P < 0.05). The meat yield in group 4 was lower than that in the other groups (P < 0.05). Full gizzard weight in group 1 was lower than that in groups 3 and 4, and group 2 parameters were lower than group 4 parameters (P < 0.05). Salmonella positive carcasses numbered 1 in group 1, 1 in group 2, 0 in group 3 and 2 in group 4. The only significant difference found among the groups was for coliform bacteria. The coliform count in group 1 (7.54 ± 0.100) was significantly different from that in group 2 (7.00 ± 0.159) and group 3 (7.08 ± 0.169) (P < 0.05).

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Haematological And Coagulation Profiles During Severe Tropical Theileriosis In Cattle, Ramazan Çöl, Uğur Uslu Jan 2006

Haematological And Coagulation Profiles During Severe Tropical Theileriosis In Cattle, Ramazan Çöl, Uğur Uslu

Turkish Journal of Veterinary & Animal Sciences

This study was conducted to measure selected haematological parameters in Holstein cattle naturally infected with Theileria annulata. Haematological analysis indicated significant decreases in red blood cell count, haematocrit value, haemoglobin amount, mean corpuscular haemoglobin concentration, and white blood cell, lymphocyte, neutrophil, monocyte, eosinophil, and basophil counts. On the other hand, significant increases were seen in mean corpuscular volume and marked reticulocytosis in infected animals compared to the animals in the control (uninfected) group. In the coagulation profile, activated partial thromboplastin time and prothrombin time were significantly prolonged, and platelet counts were significantly less in the infected group compared to those …

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The Influence Of Cold Conditioning On The Performance Of The Broiler Chicken, Mehmet Yardimci, Erol Şengör, E. Hesna Şahi̇n, İsmai̇l Bayram, İ. Sadi̇ Çeti̇ngül Jan 2006

The Influence Of Cold Conditioning On The Performance Of The Broiler Chicken, Mehmet Yardimci, Erol Şengör, E. Hesna Şahi̇n, İsmai̇l Bayram, İ. Sadi̇ Çeti̇ngül

Turkish Journal of Veterinary & Animal Sciences

The effect of short-term cold exposure on the performance of 600 commercial Ross 308 male broiler chickens was examined. On the fifth and sixth days of life the trial group was exposed to 15 °C ambient temperature for 3 h, both days, while the control group was kept under conventional brooding conditions. Thereafter, both control and trial birds were exposed to standard rearing temperatures until the 21st day, and from the 21st day to slaughter they were exposed to 15 °C ambient temperature. The mortality rate was significantly lower in the trial group (5%) compared to the control group (11%). …

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The Pathologic And Bacteriologic Comparison Of Pneumonia In Lambs, Ertan Oruç Jan 2006

The Pathologic And Bacteriologic Comparison Of Pneumonia In Lambs, Ertan Oruç

Turkish Journal of Veterinary & Animal Sciences

The correlations between the bacteriologic agent of lamb pneumonia and its pathologic characters were investigated in this study. Pneumonia was detected in 262 (35.41%) of 740 diseased or dead lambs. Pathogenic bacteria were isolated in 114 cases (14.96% of all lamb deaths and 43.51% of all pneumonias). Lung lesions were histopathologically described as acute-catarrhal (17.56%), catarrhal-purulent (14.50%), purulent-necrotic (9.54%), fibrinous (26.72%), fibrinous-necrotic (5.73%), interstitial (18.32%), or verminous pneumonia (7.63%). In bacteriological studies, Mannheimia haemolytica (56.14%), E. coli (24.56%), and Pasteurella multocida (10.52%) were detected as important bacterial agents that caused different pneumonic lesions in lambs.

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Ultrasonographic Monitoring Of Follicular Development, Ovulation And Corpora Lutea Formation In A Bitch, Kemal Eker, M. Rifat Salmanoğlu Jan 2006

Ultrasonographic Monitoring Of Follicular Development, Ovulation And Corpora Lutea Formation In A Bitch, Kemal Eker, M. Rifat Salmanoğlu

Turkish Journal of Veterinary & Animal Sciences

Follicular development, ovulation and corpora lutea formation in a bitch were monitored daily by ultrasonography using a 8-MHz linear transducer. These findings were compared with vaginal cytology and changes in the peripheral serum concentrations of oestradiol-17\beta and progesterone. The follicles were identified as anechoic spherical structures on day 6 of prooestrus. The numbers of follicles imaged on day 6 of prooestrus were 3 on the left ovary and 3 on the right ovary. The average follicular size was 0.67 ± 0.06 cm on the right ovary and 0.48 ± 0.02 cm on the left ovary during the follicular phase. Apparent …

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Serum Iron, Total Iron-Binding Capacity, Unbound Iron-Binding Capacity, Transferrin Saturation, Serum Copper, And Hematological Parameters In Pregnant Akkaraman Ewes Infected With Gastro-Intestinal Parasites, Süleyman Kozat, Nazmi̇ Yüksek, Yaşar Göz, İhsan Keleş Jan 2006

Serum Iron, Total Iron-Binding Capacity, Unbound Iron-Binding Capacity, Transferrin Saturation, Serum Copper, And Hematological Parameters In Pregnant Akkaraman Ewes Infected With Gastro-Intestinal Parasites, Süleyman Kozat, Nazmi̇ Yüksek, Yaşar Göz, İhsan Keleş

Turkish Journal of Veterinary & Animal Sciences

The aim of this study was to investigate serum iron parameters, and copper and iron deficiency anemia in ewes infected with gastro-intestinal parasites. This study was conducted with 60 pregnant Akkaraman ewes. In the statistical analyses, values obtained from both parasite infected and uninfected ewes were compared. Significant decreases were observed in PCV (P < 0.05), Hb (P < 0.05), RBC (P < 0.05), total protein (P < 0.05), albumin (P < 0.05), globulin (P < 0.05), and MCHC (P < 0.01), and a significant increase was seen in the WBC value (P < 0.05) in the parasite infected group. Furthermore, the parasite infected group had lower serum Fe (P < 0.001), TS % (P < 0.001), and serum Cu (P < 0.01) levels, and had higher UIBC values (P < 0.05) compared to the values obtain from the uninfected group. Therefore, in addition to antiparasite drug treatment in parasite infected pregnant ewes, iron preparations should also be administered in order to treat iron deficiency.

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The Effect Of Age On Slaughter And Carcass Characteristics In Male Zavot Cattle, Ali̇ Riza Aksoy, Turgut Kirmizibayrak, Mustafa Saatci Jan 2006

The Effect Of Age On Slaughter And Carcass Characteristics In Male Zavot Cattle, Ali̇ Riza Aksoy, Turgut Kirmizibayrak, Mustafa Saatci

Turkish Journal of Veterinary & Animal Sciences

This study was carried out to determine the effect of age on male Zavot cattle for slaughter and carcass characteristics. For this aim, 18 male Zavot cattle were divided equally into groups 1, 2 and 3 containing animals 6, 18 and 30 months old, respectively. The fattening period lasted 162 days and there was a 14-day adaptation period. Individual ad-libitum feeding was used during the experiment. At the end of the fattening period, the mean liveweight of groups 1, 2 and 3 was 202.9, 327.3 and 348.5 kg; hot carcass weight was 106.3, 190.7 and 197.2 kg; and the dressing …

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Evaluation Of Various Antibiotic Treatments In Calves With Infectious Bovine Keratoconjunctivitis, Murat Ki̇bar, K. Semi̇h Gümüşsoy, Ahmet Öztürk Jan 2006

Evaluation Of Various Antibiotic Treatments In Calves With Infectious Bovine Keratoconjunctivitis, Murat Ki̇bar, K. Semi̇h Gümüşsoy, Ahmet Öztürk

Turkish Journal of Veterinary & Animal Sciences

The purpose of this study was to determine whether subconjunctival administration of enrofloxacin could ameliorate a herd outbreak of infectious bovine keratoconjunctivitis (IBK) and to compare the efficacy of this regimen with the efficacy of subconjunctival administration of a combination of penicillin+streptomycin. The calves were assigned to 1 of 3 groups at the beginning of the study, and were examined 3 times weekly for 4 weeks. Calves in group 1 (n = 12) were treated with the subconjunctival administration of a combination of penicillin+streptomycin. This treatment consisted of 3 subconjunctival injections of penicillin+streptomycin every 48 h. Calves in group 2 …

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\Beta-Lactoglobulin Variants In Awassi And Morkaraman Sheep And Their Association With The Composition And Rennet Clotting Time Of The Milk, Şerafetti̇n Çeli̇k, Sali̇h Özdemi̇r Jan 2006

\Beta-Lactoglobulin Variants In Awassi And Morkaraman Sheep And Their Association With The Composition And Rennet Clotting Time Of The Milk, Şerafetti̇n Çeli̇k, Sali̇h Özdemi̇r

Turkish Journal of Veterinary & Animal Sciences

In this study, \beta-lactoglobulin (\beta-Lg) variants in Awassi and Morkaraman sheep were studied using polyacrylamide gel electrophoresis, and their association with composition and rennet clotting time of the milk was estimated. Two alleles (A and B) and 3 different genotypes for \beta-Lg (AA, AB and BB) were observed in the whey from both breeds. The frequencies of \beta-Lg alleles were estimated as A 0.63 and B 0.37 in the Awassi breed, and A 0.56 and B 0.44 in the Morkaraman breed. These results indicate high \beta-A frequencies in both sheep breeds. Significant relationships were obtained between \beta-Lg variants and some …

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Antigenic Diversity Of Bovine Viral Diarrhoea Viruses (Bvdv) Isolated In Turkey, Kadi̇r Yeşi̇lbağ, İbrahi̇m Burgu Jan 2006

Antigenic Diversity Of Bovine Viral Diarrhoea Viruses (Bvdv) Isolated In Turkey, Kadi̇r Yeşi̇lbağ, İbrahi̇m Burgu

Turkish Journal of Veterinary & Animal Sciences

Sixty BVDV field strains isolated from different regions of Turkey were antigenically characterised with a panel of 16 monoclonal antibodies (mAbs) specific to viral proteins E2 and NS2-3. MAb recognition patterns were detected by an indirect peroxidase-linked antibody assay and data were subjected to computer analysis for discussing herd specificity of viral strains isolated from immunotolerant, persistently infected (IPI) cattle. For that purpose, phylogenic and statistical analyses were performed. A high level of antigenic diversity was detected among the isolates. Diversity was also exhibited in IPI strains originating from the same herd. In some herds, viruses were divided into 2 …

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The Adaptive Value Of Aggregation Among Juvenile Caribbean Spiny Lobster: An Evaluation Using Individual-Based Modeling, Thomas W. Dolan Iii, Mark J. Butler Iv Jan 2006

The Adaptive Value Of Aggregation Among Juvenile Caribbean Spiny Lobster: An Evaluation Using Individual-Based Modeling, Thomas W. Dolan Iii, Mark J. Butler Iv

Biological Sciences Faculty Publications

Ontogenetic changes in gregariousness by pre-reproductive animals, like that observed in juvenile Caribbean spiny lobsters (Panulirus argus), may be adaptive and reflect size-specific changes in the effectiveness of aggregation in promoting survival. Alternatively, aggregation may simply result from changes in the distribution or availability of suitable habitat structure, or from other behaviors that enhance survival. There are currently two hypotheses explaining the potential benefits of gregarious behavior in juvenile spiny lobsters, both of which focus on increasing survivorship by reducing predation pressure: the group benefit hypothesis and the guide hypothesis. The group benefit hypothesis argues that aggregations of …

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Determination Of The Primary Levels Of The Residues Of The Seeds Of Wheat, Maize, And Barley For The Elaboration Of The Food Mixture For Rabbits, Aida Esperanza Morejon Jacome Jan 2006

Determination Of The Primary Levels Of The Residues Of The Seeds Of Wheat, Maize, And Barley For The Elaboration Of The Food Mixture For Rabbits, Aida Esperanza Morejon Jacome

Theses and Dissertations

The present investigation was done in the parish of Chaltura, Granja "La Pradera" which belongs to the University Técnica del Norte. The main objective of this investigation was to determine the primary levels of the residues of the seeds of wheat, maize, barley for the elaboration of the food mixture for rabbits. The evaluated variables, food consumed, weight gain, food value, protein percentage, production cost per treatment. Previously to the initiation of the field phase bromatological analysis were done on the three food mixtures in the National Institute of Farming Investigation, Quality and Nutrition Area. The treatments were four: TI …

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A Switch From Polyandry To Serial Monogamy: Results From A Three Year Tagging Study Of Horseshoe Crabs In Long Island Sound, Jennifer Mattei Ph.D., Paul Goodell, Christine Depierro, Meghann Burke Jan 2006

A Switch From Polyandry To Serial Monogamy: Results From A Three Year Tagging Study Of Horseshoe Crabs In Long Island Sound, Jennifer Mattei Ph.D., Paul Goodell, Christine Depierro, Meghann Burke

Biology Faculty Publications

Part of an ongoing population study of the North American Horseshoe Crab, Limulus polyphemus, in Long Island Sound was completed during the 2003 – 2005 spawning seasons at Milford Point, in Milford, CT. Horseshoe crabs range more widely throughout Long Island Sound than expected and exhibit weak site fidelity. Animals originally tagged in Milford were found as far west as Stamford and as far east as Clinton, CT. during the 3 year study. Out of 522 female horseshoe crabs tagged in 2004 only 4 came back to spawn again at Milford Pt. in 2005. The sex ratios of tagged and …

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