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2004

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Articles 451 - 480 of 592

Full-Text Articles in Animal Sciences

Effect Of Dietary Probiotic Supplementation On Growth Performance In The Rock Partridge (Alectoris Graeca), Cavi̇t Arslan Jan 2004

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 …

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Follicular-Compact-Cellular Carcinoma In The Thyroid Gland Of A Dog, Ayhan Atasever, Yücel Çam, Fatma Uyanik Jan 2004

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. …

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Ornithobacterium Rhinotrachelae (Or) Infection, Nesri̇n Turan, Seyyal Ak Jan 2004

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.

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Transfer Of Maternal Immunity In The Guppy, Poecilia Reticulata, Ayşegül Kubi̇lay, Mehmet Rüştü Özen Jan 2004

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 …

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The Treatment Of Experimental Acute Ethylene Glycol (Antifreeze) Toxication Using 4-Methyl Pyrazol And Ethanol In Dogs, Vehbi̇ Güneş, Çeti̇nkaya Şendi̇l Jan 2004

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 …

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Growth Properties Of Mirror Carp (Cyprinus Carpio L., 1758) Introduced Into Gelingüllü Dam Lake, Şeri̇fe Gülsün Kirankaya, Fi̇tnat Güler Ekmekçi̇ Jan 2004

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 …

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Determination Of The Quality Parameters Of Imported Mackerel Under Different Thawing Conditions, Sühendan Mol, Özkan Özden, Nuray Erkan, Taçnur Baygar Jan 2004

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 …

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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 Jan 2004

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 …

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Purification And Characterization Of Pyruvate Kinase From Normal And Tumor Breast Tissues, Seval Yilmaz, Sema Temi̇zer Ozan, İbrahi̇m Hani̇fi̇ Özercan Jan 2004

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 …

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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 Jan 2004

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 …

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Listeria Monocytogenes, Yersinia Enterocolitica And Salmonella Enteritidis In Quail Eggs, Özlem Turgay Jan 2004

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 …

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Feed Value Of Cactus And Cactus Silage, Mustafa Çürek, Ni̇hat Özen Jan 2004

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, …

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Determination Of Microbial Gas Production, Fermentation Kinetics And Digestibility Of Alternative Crop Silages, İsmai̇l Akyol, Emi̇n Özköse, Mehmet Sai̇t Eki̇nci̇ Jan 2004

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 …

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Is The Fluid Milk Subsector Competitive In Turkey?, Seli̇m Adem Hatirli Jan 2004

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 …

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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 Jan 2004

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 …

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Dairy Cattle Farming In Kars District, Turkey: I. Characteristics And Production, Hi̇dayet Meti̇n Erdoğan, Mehmet Çi̇ti̇l, Vehbi̇ Güneş, Mustafa Saatci Jan 2004

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 …

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The Effects Of Inorganic And Organic Selenium Sources On Growth Performance, Carcass Traits, Tissue Mineral Concentrations, And Enzyme Activity In Poultry, Robert L, Iii Payne Jan 2004

The Effects Of Inorganic And Organic Selenium Sources On Growth Performance, Carcass Traits, Tissue Mineral Concentrations, And Enzyme Activity In Poultry, Robert L, Iii Payne

LSU Doctoral Dissertations

The purpose of this research was to compare dietary inorganic and organic Se sources in poultry. An experiment was conducted to assess daily egg production and Se deposition in eggs of hens fed diets supplemented with inorganic or organic Se. The results from this experiment indicated that hen production was not affected by Se source, and organic Se increased egg Se concentrations more than inorganic Se. Two experiments then were conducted with broilers to compare dietary organic and inorganic Se on growth performance, carcass traits, breast and plasma Se concentrations, and plasma glutathione peroxidase activity. The results from these experiments …

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The Non-Phosphorus Effects Of Dietary Phytase In Swine And Poultry, Jason Layne Shelton Jan 2004

The Non-Phosphorus Effects Of Dietary Phytase In Swine And Poultry, Jason Layne Shelton

LSU Doctoral Dissertations

This research was conducted to determine the non-phosphorus effects of phytase in diets for swine and poultry. An experiment was conducted to determine the effect of phytase addition on energy availability and protein and fat deposition in growing pigs. Results from this experiment indicated that phytase had small positive effects on energy availability, protein deposition, and fat deposition. In this study, 23 of 29 response variables were at least numerically increased with phytase addition. Two experiments were conducted to determine the accuracy of the energy and amino acid matrix values for Natuphos 1200 in broilers from 0 to 21 or …

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Leptin In Horses: Influences Of Body Condition, Gender, Insulin Insensitivity, Feeding, And Dexamethasone, Joshua Allen Cartmill Jan 2004

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. …

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Preservation Of Sperm Harvested From The Rat, Caprine, Equine, And Bovine Epididymis, Aida Nioma James Jan 2004

Preservation Of Sperm Harvested From The Rat, Caprine, Equine, And Bovine Epididymis, Aida Nioma James

LSU Doctoral Dissertations

The interest in preserving endangered species has increased the amount of attention lent to the recovery of functional sperm from the epididymides of deceased males (Foote, 2000). Postmortem specimens have a finite time period before decomposition affects functionality. Determination of this “window of opportunity” to harvest and preserve epididymal sperm would be beneficial for further research in sperm preservation and assisted reproductive technologies. The objective of these studies was to determine 1) the “window of opportunity” to collect viable rat, caprine, equine and bovine epididymal sperm, 2) if epididymal sperm collected could be cryopreserved, 3) to test two common cryoprotectants …

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Somatic Cell Interspecies Nuclear Transfer, Marina Julia Sansinena Jan 2004

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.

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The Chick Embryo Amnion As An In Vitro Culture System For Ivf And Nt Embryos, Tonya Renea Davidson Jan 2004

The Chick Embryo Amnion As An In Vitro Culture System For Ivf And Nt Embryos, Tonya Renea Davidson

LSU Doctoral Dissertations

Calving rates are significantly reduced following in vitro production of embryos. Thus, if a technique could be developed that would increase calving rates by as little as one viable offspring, significant research advances could be made. Therefore, in a series of experiments, the efficiency and quality of culturing IVP bovine embryos in the amnion of a domestic chicken egg was tested. In Experiment I, by culturing IVP bovine embryos in the chick amnion (day 4 to 7 of incubation) it was discovered that there was no significant difference in blastocyst rates compared with controls. In Experiment II, it was shown …

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The Effect Of Size-Limited Brood Capacity On Brood Size In A Freshwater Bivalve, Mark Beekey Jan 2004

The Effect Of Size-Limited Brood Capacity On Brood Size In A Freshwater Bivalve, Mark Beekey

Biology Faculty Publications

Size limited brood capacity is common among species with hard exoskeletons or shells. In these species, brood size is limited by the physical capacity to hold offspring. Here we present evidence that brood size is limited by physical constraints in Sphaerium striatinum , a small brooding bivalve. Sphaerium striatinum is a sequential brooder and produces offspring throughout the year. Offspring are brooded in marsupial sacs located on the inner demibranch. In an unconstrained brooder one would predict that brood size would increase as a function of adult length cubed, a volumetric relationship. In S. striatinum, brood size increases as less …

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Diet Quality And Food Limitation Affect The Dynamics Of Body Composition And Digestive Organs In A Migratory Songbird (Zonotrichia Albicollis), Barbara J. Pierce, Scott R. Mcwilliams Jan 2004

Diet Quality And Food Limitation Affect The Dynamics Of Body Composition And Digestive Organs In A Migratory Songbird (Zonotrichia Albicollis), Barbara J. Pierce, Scott R. Mcwilliams

Biology Faculty Publications

Migrating songbirds interrupt their feeding to fly between stopover sites that may vary appreciably in diet quality. We studied the effects of fasting and food restriction on body composition and digestive organs in a migratory songbird and how these effects interacted with diet quality to influence the rate of recovery of nutrient reserves. Food limitation caused whitethroated sparrows to reduce both lean and fat reserves, with about 20% of the decline in lean mass represented by a decline in stomach, small intestine, and liver. During refeeding on diets similar in nutrient composition to either grain or fruit, foodlimited grain-fed birds …

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Age And Growth Of Scotia Sea Icefish, Chaenocephalus Aceratus, From The South Shetland Islands, M. La Mesa, J. Ashford, E. Larson, M. Vacchi Jan 2004

Age And Growth Of Scotia Sea Icefish, Chaenocephalus Aceratus, From The South Shetland Islands, M. La Mesa, J. Ashford, E. Larson, M. Vacchi

OES Faculty Publications

Samples of Chaenocephalus aceratus (Lönnberg) were collected during a trawl survey carried out around the South Shetland Islands in January–February 2002. Fish were caught by commercial bottom trawl fishing down to 500 m depth, using a stratified randomized sampling design. As observed in other recent surveys within the same area, C. aceratus represented one of the predominant species. Overall, 357 specimens ranging from 13 and 67 cm (TL) were selected for the present study. Ages were estimated by counting annuli present in the sagittal otoliths, exposed by grinding and polishing along their sagittal plane. To estimate the precision of age …

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The Role Of Farm Dams As Refugia For Aquatic Invertebrates In A Salinised Landscape, South Western Australia, Jean-Michel Benier Jan 2004

The Role Of Farm Dams As Refugia For Aquatic Invertebrates In A Salinised Landscape, South Western Australia, Jean-Michel Benier

Theses: Doctorates and Masters

In a salinised landscape farm dams may represent the last truly freshwater surface resource, and therefore provide refuge habitats for the biota of wetlands affected by increasing salinity. One wetland threatened by increased salinity in south-west Western Australia is Lake Toolibin. It is listed as a Wetland of International Importance under the Ramsar Convention in recognition of its high conservation value, and remediation actions to halt (and possibly reverse) further increases in salinity are being undertaken at this wetland. Farm dams act as aquatic refugia if they convey resistance and/or resilience to the biotic communities of a disturbed habitat. This …

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Seasonal Effects On Diet Of Two Arid Zone Dasyurids, Dasycercus Cristicauda And Ningaui Ridei (Dasyuridae, Marsupialia), Leisa Turner Jan 2004

Seasonal Effects On Diet Of Two Arid Zone Dasyurids, Dasycercus Cristicauda And Ningaui Ridei (Dasyuridae, Marsupialia), Leisa Turner

Theses : Honours

Seasonal fluctuations in rainfall and food availability are thought to change populations of arid zone mammals dramatically over time. Competition between similar species for limited food resources is believed to be a major factor in the evolution and maintenance of population assemblages. Animals foraging in arid regions must be responsive to the unreliable distribution of nutrients and food resources to ensure the survival of viable populations. Adaptive physiological traits and behavioural mechanisms of arid zone animals allow them to survive extreme conditions and the ability to switch between prey species in adverse conditions is an advantageous strategy. This study was …

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Investigation Into The Use Of Bait Stations For The Control Of The European Wild Rabbit (Oryctolagus Cuniculus) In The Urban Bushland Reserve Of Bold Park, Perth, Western Australia, Malin Kordes Jan 2004

Investigation Into The Use Of Bait Stations For The Control Of The European Wild Rabbit (Oryctolagus Cuniculus) In The Urban Bushland Reserve Of Bold Park, Perth, Western Australia, Malin Kordes

Theses : Honours

European rabbits in Australia have a significant impact on the environment and the economy. It is therefore necessary to implement control programs. In rural areas a number of methods including warren ripping and poisoning are frequently used. In urban areas though, rabbit control is not as easily accomplished because the use of many control methods is not appropriate. For example, the poison 1080 often cannot be used due to public health concerns and warren ripping cannot be used in conservation areas. Poisoning with pindone, an anticoagulant, is therefore one of few options available to the managers of urban reserves. However, …

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The Effects Of Adding Urea Or Urea + Molasses In Some Sorghum Varieties Harvested At Dough Stage On Silage Quality And Digestible Dry Matter Yield, Murat Demi̇rel, Suphi̇ Deni̇z, İbrahi̇m Yilmaz, Hüseyi̇n Nursoy Jan 2004

The Effects Of Adding Urea Or Urea + Molasses In Some Sorghum Varieties Harvested At Dough Stage On Silage Quality And Digestible Dry Matter Yield, Murat Demi̇rel, Suphi̇ Deni̇z, İbrahi̇m Yilmaz, Hüseyi̇n Nursoy

Turkish Journal of Veterinary & Animal Sciences

The aim of this study was to evaluate the effects of the addition of 0.5% urea or 0.5% urea plus 4% molasses into some sorghum varieties (Gözde, P-988, Grazer and Grass-II) harvested at the dough stage on silage quality, in vitro dry matter (DM) digestibility and digestible DM yields. Triplicate silage samples from each variety and treatment group, a total of 36 silage samples, were prepared in 1 l mino-silos and incubated for 90 days. Silage DM and crude protein (CP) levels ranged from 29.56 to 33.46%, and from 7.16 to 12.63%, respectively. Addition of urea or urea + molasses …

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The Effects Of Urea And Molasses Addition Into Corn Harvested At Early-Milk Stage On Silage Quality And Digestible Dry Matter Yield, Ni̇hat Denek, Suphi̇ Deni̇z Jan 2004

The Effects Of Urea And Molasses Addition Into Corn Harvested At Early-Milk Stage On Silage Quality And Digestible Dry Matter Yield, Ni̇hat Denek, Suphi̇ Deni̇z

Turkish Journal of Veterinary & Animal Sciences

The objective of this study was to evaluate the effects of the addition of 0.5% urea or 0.5% urea plus 4% (w/w) molasses into corn varieties (Rx-947, 33-94, Frassino, and Arifiye) harvested at the early-milk stage on silage quality, in vitro digestibility and digestible dry matter (DM) yield. The addition of urea into silage increased the CP content (P < 0,05). The neutral detergent fiber and acid detergent fiber contents of the control silages were 69.40 and 38.68 for Rx-947, 69.34 and 38.69 for 33-94, 62.67 and 34.93 for Frassino, and 64.35 and 37.04 for Arifiye (P < 0,05). The addition of urea or urea plus molasses into silage increased the silage pH in all varieties, except for Rx-947 (P < 0,05). The lactic, acetic, propionic and butyric acid contents of the silage samples were between 23.2 and 153.3, 7.8 and 23.4, 0.6 and 1.6, and 0.0 and 0.54 g/kg DM, respectively. The addition of urea or urea and molasses into Rx-947 and Frassino varieties and the addition of urea only into the 33-94 variety increased silage lactic acid levels. The addition of urea and molasses into Rx-947, Frassino and Arifiye varieties also increased silage acetic acid levels (P < 0,05). There was a significant difference only between the Frassino and Arifiye varieties on this parameter (P < 0,05). The addition of urea only into silage decreased DM digestibility; the addition of molasses with urea, however, eliminated this negative effect of urea on digestibilit in all varieties, except for Frassino (P < 0,05). Digestible DM yields of untreated silage were 863.68, 1142.43, 1044.43, and 1075.07 kg/decare (10 decares = 1 hectare) for Rx-947, 33-94, Frassino and Arifiye, respectively (P < 0,05). The digestible DM yield of untreated Rx-947 silage was significantly lower than those of the others (P < 0,05). It can be concluded that corn varieties harvested at the early-milk stage (20% DM) can be ensiled, and that urea and molasses can be used as silage additive to increase CP and energy content of silages.

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