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Prevalence Of Campylobacter In A Turkey Production Facility, Aaron Shawn Kiess
Prevalence Of Campylobacter In A Turkey Production Facility, Aaron Shawn Kiess
Graduate Theses, Dissertations, and Problem Reports
Frequency of detection was monitored in three flocks of turkeys from May, 2000 to March 2001. The effect of time was considered for hens in flocks 1 and 2, and the effect of time, gender, and litter (fresh or used) was determined for flock 3. Poults, poult-box liners, waterers, and fecal droppings were monitered throughout production for the presence of Campylobacter using Campy-Cefex agar incubated at 42°C under microaerophilic conditions (85% N2, 10% CO2, and 5% O2). Peak colonization occurred near 3 weeks of production. Frequency of Campylobacter isolation from bird sources paralleled isolation from waterers. Frequency of detection from …
Effect Of Concentrations Of Progesterone On Follicular Development And Fertility In Beef Cows, Jason Brian Candler
Effect Of Concentrations Of Progesterone On Follicular Development And Fertility In Beef Cows, Jason Brian Candler
Graduate Theses, Dissertations, and Problem Reports
The present study was performed to investigate the effects of low ascending concentrations of progesterone on fertility in lactating beef cattle. Cows on the low ascending progesterone treatment received PGF2alpha from days 3 to 4 after estrus. All cows received PGF2alpha on day 9, and estradiol benzoate on day 11. Cows were inseminated artificially 12 hours after estrus. Concentrations of progesterone were lower in treated versus control cows. Pregnancy rate did not differ between treated and control cows. Pregnancy rate was greater in cows that ovulated a follicle from the right (78%) versus left (52%) ovary (p < 0.01). Low ascending progesterone early in the estrous cycle did not decrease fertility to the same extent seen with extended periods of low progesterone.
Functional Profiles Of Growth-Related Genes During Embryogenesis And Postnatal Development Of Chicken And Mouse Skeletal Muscle, Hakan Kocamis
Functional Profiles Of Growth-Related Genes During Embryogenesis And Postnatal Development Of Chicken And Mouse Skeletal Muscle, Hakan Kocamis
Graduate Theses, Dissertations, and Problem Reports
Reverse-transcription polymerase chain reaction (RT-PCR) was performed to measure myostatin, follistatin, activin-B gene expressions during chicken embryonic development. Strong myostatin expression was found in the early chicken embryos (E 0, E 1) and the developmental expression pattern of myostatin mRNA coincided with the periods of primary and secondary muscle fiber formation. Follistatin transcripts followed a linear expression pattern from E 0 to E 20, while activin-B had a quadratic pattern. The ontogeny of myostatin gene expression was nearly identical in satellite cells isolated from pectoralis major (PM) and biceps femoris (BF) muscles of chicken. Activin-B mRNA level in PM satellite …
Induction Of Fertile Estrus During Seasonal Anestrus In Ewes And Fall Born Ewe Lambs, Marlon Knights
Induction Of Fertile Estrus During Seasonal Anestrus In Ewes And Fall Born Ewe Lambs, Marlon Knights
Graduate Theses, Dissertations, and Problem Reports
The quantity of progesterone (P4) delivered by a new P 4 releasing intravaginal insert (polycapralactone [PCL] insert), was inadequate to increase serum concentrations of P4 to that observed in cycling ewes during the luteal phase. Percentage of ewes in estrus was greater in P4 treated than in control ewes. Estrous response was greater after treatment with P4 for 5 than for 12 d. Progesterone increased the percentage of ewes lambing to both service periods by 20 percentage points. Prolificacy to the first service period in ewes treated with FSH was greater than the prolificacy in control and all ewes lambing …
Unethical Practices In Exhibiting Animals As Observed By West Virginia Extension Agents And High School Agriculture Teachers, Jared Nathaniel Nestor
Unethical Practices In Exhibiting Animals As Observed By West Virginia Extension Agents And High School Agriculture Teachers, Jared Nathaniel Nestor
Graduate Theses, Dissertations, and Problem Reports
The purpose of this study was to determine the frequency of unethical practices in exhibiting animals observed by West Virginia extension agents and high school teachers. A researcher-created demographic sheet and a fifty-eight-statement Lickert type questionnaire were sent to all extension agents and high school agriculture teachers in West Virginia (N = 154). Descriptive data were analyzed using the Statistical Package for Social Sciences (SPSSpc). Frequencies, t-values and means were used to describe and analyze the research results.;There are unethical practices in West Virginia concerning cruelty to animals but these practices are not a problem that has a high rate …