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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
21

Ring-necked pheasant survival, nest habitat use, and predator occupancy in Kansas spring cover crops

Annis, Adela C. January 1900 (has links)
Master of Science / Division of Biology / David A. Haukos / The ring-necked pheasant (Phasianus colchicus) is a popular and economically important upland gamebird in Kansas. Population declines have stakeholders seeking methods to manage populations on agricultural lands. Cover crops planted during the breeding period may provide important resources pheasants require for survival and successful reproduction. I evaluated three cover crop mixes; a custom mix, commercial mix, a wildlife mix, and a chemical fallow control in three counties in western Kansas, during 2017 and 2018 to determine their potential as a management practice for increasing pheasant habitat. I tested the relative effects of spring cover crops on female pheasant survival, nest survival, nest-site selection, and mesocarnivore occupancy. Females pheasants (73) were captured via nightlighting during February – April and fitted with 15-g very-high-frequency radio collars and monitored by telemetry. I placed 58 camera traps on field edges and within cover crop treatments from April to September. Vegetation data were collected at nests and random points to assess nest-site selection and weekly random vegetation points were sampled within treatments. I used known fate and nest survival models in the package RMark interface in R to investigate adult and nest survival (R Core Team 2018). Adult breeding season survival was 0.57 (SE < 0.0001, CI = 0.5739 – 0.5740). Percent spring cover crop positively influenced adult survival (AICc wi = 0.450). Nest survival was 0.36 (SE < 0.001, CI = 0.3614 - 0.3614). Daily nest survival followed a pattern of high survival that gradually declined over the breeding season. Resource selection functions suggest female ring-necked pheasants selected vegetation between 5-7 dm at 50% VOR for nest sites (AICc wi = 0.97). Chi-square analyses suggest females selected Conservation Reserve Program (CRP) patches for nest sites more than expected during both years (2017 χ²₄ = 26.49, P < 0.001; 2018 χ²₄ = 9.80, P = 0.04). CRP supported 57% of nests and 56% of successful nests relative to other cover types. All three of the monitored nests in cover crops were depredated. Ring-necked pheasant occupancy was greatest on edges of treatments (ψ = 0.97, SE = 0.081) and influenced by proportion of the Chick Magnet seed mix (AICc wi = 0.68). Mesocarnivore occupancy was greatest on treatment edges with a constant occupancy of 0.99 (SE = 0.47, AICc wi = 0.66). Spring cover crops provide cover and foraging resources when the majority of agricultural practices are fallow. Spring cover crops do not provide sufficient vertical cover for nesting until after peak nesting occurs, especially during cooler than average winter and spring conditions such as 2018. However, there are tangible benefits of spring cover crops to other biological periods, such as adult female survival, and brood resources if placement of cover crops is targeted near quality nest habitat. My results indicates wheat is an ecological trap for nesting due to increased predation and destruction during harvest. Providing quality nest structure will reduce females nesting in wheat. Incorporation of spring cover crops is a beneficial wildlife management tool that can increase ring-necked pheasant habitat on the landscape.
22

Vliv vybraných krmných doplňků na výskyt kokcidií v zažívacím traktu bažantů / Influence of selected feeding supplements on the occurrence of coccidias in digestive tract of pheasants

ŠÍP, Pavel January 2015 (has links)
The occurrence of coccidiosis is an enormous problem of pheasant farming. The aim of this study is to show, that this disease can be cured by unconventional dietary supplements. Dietary supplements which were used in this study were as follows: prebiotics (Ascophyllum nodosum), probiotics (Lactobacillus fermentum), homeopathics, Sulfacox and scrap from the seed by Vitis vinifera. The experiment took place in the Ranč Daniela farm in the town Hůrka (close to the Horní Planá Town) from 26.7.2014 to 5.10.2014. Six groups of pheasants were made - three experimental groups and one control group. All groups were consisted of 15 individuals. The pheasant Phasianus colchicus was used in this experiment. Dietary supplements were served for two weeks, than the serving stopped for two weeks and continued again. The samples of excrements were tested all the study long using the floatation method in Sheather's sugar solution. The results were marked and evaluated. The favourable effect of Ascophyllum nodosum, homeopatics and Lactobacillus fermentum on the intestinal tract of pheasant was significant.
23

Vyhodnocení tlaku predátorů na hnízda divoké populace bažanta obecného v honitbě HS Přerov nad Labem / Predator`s influence on wild pheasant population in hunting district HS Přerov nad Labem

STRNAD, Marek January 2009 (has links)
The aim of this dissertation was firstly to review and analyze an effectiveness of a current precaution oriented on pheasant protection strategy including its economic costingness, all within the selected hunting district in Přerov nad Labem. Secondly to try to find and suggest an own solution in order to improve the protection and conditions applicable to occurrence and reproduction of pheasant.
24

An Evaluation of Conservation Reserve Lands in Relation to Pheasant Production and Survival

Bartmann, Richard M. 01 May 1966 (has links)
The ring-necked pheasant (Phasianus colchicus) is one of the most important upland game species over much of the nation. It is also one of the most difficult to effectively manage for the increasing hunter population. The high value of agricultural lands renders habitat improvement programs by state agencies a financial impossibility except on an extremely localized basis. Therefore, the primary pheasant management tool largely remains hunting season manipulation. The federal government through various agricultural programs may have an influence upon pheasant habitat. Public Law 540 entitled "Agricultural Act of 1956," more commonly referred to as the "Soil Bank Act" (Congress, 84th, 2d Session 1956, 1957), seemed quite promising in this respect. This act provided for two programs, the Acreage Reserve and the Conservation Reserve. The first was a short term program and of negligible value for pheasants. The second was of longer duration and is the one under which remaining Soil Bank lands are included. Under the Conservation Reserve, cropland was taken out of production and a sound conservation practice established in an attempt to balance the total production and demand of surplus crops. Farmers signed contracts for periods of three to ten years. The federal government then shared the cost of establishing conservation practices and made annual payments for maintaining them during the contract periods. The Conservation Reserve program has not been extended since 1960. Consequently, all remaining contracts will have expired by the end of 1971. Relatively little Conservation Reserve land has been put into "G" practices specifically designed for wildlife. These include such things as wildlife food and cover plantings, development or restoration of shallow water areas, and construction of ponds and wildlife watering facilities. Instead, the bulk of wildlife benefits will have to be derived from the "A-2" practice, the establishment of permanent vegetative cover, since this is the one most widely employed. Any appraisal of the Conservation Reserve then is, in actuality, an evaluation of habitat provided by the "A-2" practice.
25

A Study of the Ring-Necked Pheasant (Phasianus Colchicus Torquatus Gmelin) in Northern Utah

McKean, William T. 01 May 1942 (has links)
Purpose of Study. The ring-necked pheasant (Phasianus colchicus torquatus Gmelin) is well enough known to need no introduction. It is at present undoubtedly the most abundant and most important gallinaceous game bird in northern Utah. Its abundance and its occurrence in agricultural areas has stimulated much general interest. Yet, aside from two food habits studies, both conducted in Utah County, no intensive research has been made into its ecological relationships or its general life history in Utah. In order to formulate sound management plans for the pheasant in Utah, the Utah Cooperative Wildlife Research Unit has felt the need for basic information regarding its mortality phases, movements, food habits, habitat preferences, interspecific relationships, and its effect on cultivated crops and the effect of farm practices upon its numbers and distributions.
26

Vliv skladovacích podmínek na kvalitativní ukazatele masa lovné zvěře / Effect of storage conditions on qualitative indicators of game meat

MAURER, Jan January 2016 (has links)
This work deals with the health and meat hygiene of venison and especially its appropriate storage. The aim is to find relationships between cooling and freezing game to bring a deeper insight into the work of meat from wildlife animals to achieve superior quality and taste characteristics unchanged pheasant meat. The basis of the whole work is a laboratory analysis of forty meat samples, which were obtained from local organizations involved in the management of game. In this analysis we are monitored four basic parameters: the content of water, fat, protein, and the connective tissue protein, which are major predictive value for a particular game palatability. It was found that exist statistically significant dependence between proteins and connective tissue protein, protein and water, fat and water. It was not possible to reject the null hypothesis about the differences between refrigerated and frozen samples of water, fat, protein and collagen. Conclusions measurements were compared with the available international and professional Czech literature.
27

Calcium Dynamics Affecting Egg Production, Skeletal Integrity, and Egg Coloration in Ring-necked Pheasants (Phasianus colchicus)

Jones, Landon R. 05 December 2007 (has links) (PDF)
These 4 chapters represent manuscripts formatted for submission to journals based on an experiment conducted on Ring-necked Pheasants (Phasianus colchicus). Calcium limits the distribution of this species, which produces 7-15 eggs per clutch. They may renest up to 5 times per breeding season on a diet low in calcium. The first chapter examines egg production in laying hens on 7 different diets from 0.19-4.47% calcium in the absence of calcium loading. Calcium-loaded pheasants store calcium in medullary bone before an experiment and can draw on this surplus during egg production, possibly skewing experimental results. We measured egg production, egg characteristics, and hen femur ash fraction in a 2-month experiment. Hens in the middle 5 dietary calcium (1.07-3.08%) groups statistically produced the same number of eggs, which differed from reported studies where hens were calcium-loaded. Ash fraction values indicated that hens expended medullary bone reserves to produce eggs when dietary input was low. In Chapter 2, we examined bone properties in the above femurs to determine if pheasant hens on low calcium diets expended enough medullary bone stores to compromise skeletal integrity. We applied a 3-point bending test to find femur breaking strength and examined structural bone properties. Calcium and breaking strength were linearly associated. Femurs of hens given lower calcium diets were easier to break. Structural properties of cortical bone were not correlated with dietary calcium. Pheasants on low calcium, comparable to wild conditions, seemed to sacrifice skeletal integrity to maintain high egg production, although not enough to damage cortical bone. In Chapter 3 we examined 437 eggs laid to determine if egg color correlated with dietary calcium, egg mass, volume or shell thickness. Yellow pigment decreased with increasing calcium. Biliverdin had a higher affinity for calcium than protoporphyrin. In Chapter 4, we examined male pheasants to determine if reduced surface area on one wing (clipped) induced unbalanced pectoralis muscle development and humerous density on the corresponding side after wing-whirring for 2 months. We weighed pectoralis muscles and conducted 3-point bending tests on humeri of 7 pheasant males. We found no difference in pectoralis muscles mass, humeri breaking strength or ash fraction between clipped and unclipped wings. Wing-whirring may only put a negligible strain on male Ring-necked Pheasant pectoralis muscles and humeri.
28

Knightly Bird Vows: A Case Study in Late Medieval Courtly Culture

Boyce, Liel Y. 14 March 2012 (has links) (PDF)
In the late Middle Ages, there was a series of instances wherein knights vowed upon birds. Two of these, the first and the last, are historical events: The Feast of the Swans with Edward I in England on 22 May 1306 and the Feast of the Pheasant with Philip the Good in the duchy of Burgundy on 17 February 1454. Edward I held the Feast of the Swans as part of his son's dubbing ceremony, including the entire court taking vows on two swans. The Feast of the Pheasant was an elaborate banquet that Philip the Good used to gather support for a crusade. The other three are literary texts: the Voeux du paon, the Voeux de l’épervier, and the Voeux du héron. The Voeux du Paon contains an account of a group of nobility connected to Alexander the Great at a truce banquet. One of the prisoners accidentally kills a lady's peacock and the group decides to take vows on it before recommencing battle. The Voeux de l’épervier concerns Henry VII of Luxembourg en route to Italy to claim the title of Holy Roman Emperor. One of his knights accidentally kills a sparrowhawk and they decide, as a court, to take vows on it. Lastly, the Voeux du héron depicts Robert d' Artois inciting Edward III to initiate the Hundred Years' War over a heron. Each of these instances creates a sub-set, the bird vow cycle, within medieval vowing tradition. The origin of the bird vow cycle lies within that vowing tradition. John L. Grigsby has declared these instances as a crystallization of the gab convention of medieval literature. However, Grigsby ignored the Feast of the Swans and the Feast of the Pheasant since he was concentrated on defining a literary genre. This thesis attempts to show the bird vow cycle as connected this this literary tradition, but also a crystallization of the courtly culture that had developped in the late Middle Ages. It also attempts to show the origins of this cycle—it not only came out of a vowing tradition, but also is tied to King Arthur traditions. The culture of the late Middle Ages was nostalgic and looking back towards an idealistic version of the past—whether in legends like Arthur or historical figures like Alexander. Thus, the knightly bird vow cycle was a particular example of that fantasy in their culture. In conclusion, this thesis not only gathers together what literature there is on the knightly bird vow cycle, but it places it within a literary and historical context. The knightly bird vow cycle would not have been possible without a culture obsessed with fantasy and idealistic courtly culture.
29

The causes and consequences of individual differences in cognitive performances in relation to the social environment in pheasants

Langley, Ellis Jessica Grace January 2018 (has links)
Identifying the causes and consequences of intra-specific variation in cognitive abilities is fundamental to our understanding of the evolution of cognition. The social environment and cognitive abilities appear inextricably linked, yet evidence for how the social environment affects cognitive performances and further, how cognitive performances influence the social environment, has seldom been explored. Using the pheasant, Phasianus colchicus, I explore the relationships between individual variation in cognitive performances in relation to broad and fine-scale structure of the social environment and endeavour to separate cause and consequence. I demonstrate a positive causal effect of the broad-scale social environment on cognitive performances by observing increases in the accuracy of spatial discrimination performances when individuals are in larger groups (Chapter Two and Chapter Four). I show that the positive effects of larger group size occur over a relatively short period (less than one week), suggesting that cognitive performances are flexible in response to the social environment and I suggest four potential mechanisms. I show that while males are part of a social hierarchy, spatial discrimination performances are related to this fine-scale social structure and higher-ranking males outperform lower ranking males (Chapter Three). When attempting to determine cause and consequence, I found that spatial learning performances early in life did not predict adult cognitive performances on the same task or predict their adult social rank (Chapter Four). Hence, my results do not support that social rank is a consequence of spatial learning abilities in male pheasants. The relationship between spatial learning performances and social rank was found in adult males that had their social rank artificially elevated, suggesting that cognitive performances were not simply the result of the current social environment but remain closely related to past agonistic relationships. I did not find a relationship between early life aggression with performances on either a spatial or a non-spatial task in females or males (Chapter Five). This highlights the importance of investigating early life relationships and suggests that the relationship between spatial learning and aggression in adult males may become associated over time as a consequence of further spatial learning experiences, and, or, aggressive interactions. I then demonstrate a consequence of individual variation in cognitive abilities and show that adult foraging associations in the wild disassort by early life cognitive performances (Chapter Six). Individuals with good inhibitory control performance and poor visual discrimination performances were more central in social networks. I propose that differences in cognitive abilities manifest in foraging strategy and influence the resulting social structure. The implications of this predictable social structure remain to be explored. Finally, I discuss these results and how they contribute to our understanding of how the social environment causes individual differences in cognitive performances, as well as how variation in cognitive performances may shape the social environment. I suggest the potential implications of these findings and ideas for future work.
30

Evaluation of current agricultural practices and organophosphorus insecticide use in relation to ring-necked pheasant numbers at Klamath Basin Refuges, California

Grove, Robert Allan 28 February 1995 (has links)
A declining population of ring-necked pheasants (Phasianus colchicus) was studied at Tule Lake National Wildlife Refuge (TLNWR) from the summer of 1990 through the spring of 1993. Pheasant densities/50 ha at TLNWR in 1989, 1991, and 1992 were considerably lower (16.86, 8.49, and 6.81) than the >62 density seen in the mid-1950s. Mean body weight of hen pheasants at TLNWR was significantly lower than hens at nearby Lower Klamath National Wildlife Refuge (LKNWR) which was not intensively farmed. Mean tarsal lengths of hens at TLNWR were also significantly shorter than hens at LKNWR, suggesting reduced skeletal growth and potential nutritional problems. The lack of adequate cover was responsible for poor early nest success at TLNWR. Later in the season, spring planted crops provided adequate cover to conceal nesting hens; however, only 0.21 young in 1991 and 0.02 young in 1992 were produced per radio-equipped hen. These rates are extremely low compared to rates required to maintain a stable population. Most adult mortality occurred during the spring and early summer months at TLNWR before crops provided adequate cover, and long before pesticide applications. The main predator of the pheasants was the golden eagle (Aquila chrvsaetos). Of special concern at TLNWR was pheasant and other wildlife exposure to anticholinesterase (antiChE) insecticides used on agricultural croplands at the refuge. Direct toxicity of antiChE compounds (in this case methamidophos) killed 2 young pheasants, but no adult radio-equipped hens died as a direct result of insecticide intoxication. This finding was of particular interest because 15% of the adult pheasants collected in and around potato fields had 55% brain ChE inhibition. The extent of the effects of insecticide exposure on the survivorship of pheasant young was uncertain as they were not radio-equipped. The overriding factor impacting the pheasant population at TLNWR and to a lesser extent LKNWR was poor habitat, especially in the spring when most mortality occurred. The poor habitat also resulted in extremely low recruitment (up to 1 September). Nearly all adult mortality and most of the low recruitment occurred before the insecticide spray season. The population was nearly extirpated during the severe winter of 1992-93. / Graduation date: 1995

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