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Articles 1 - 16 of 16
Full-Text Articles in Life Sciences
Absorption And Utilization Of Choline And Vitamin B12 In Lactating Dairy Cows Using Different Delivery Methods, Virginia Maria Artegoitia Etcheverry
Absorption And Utilization Of Choline And Vitamin B12 In Lactating Dairy Cows Using Different Delivery Methods, Virginia Maria Artegoitia Etcheverry
Doctoral Dissertations
Choline and vitamin B12 are essential nutrients for growth and performances of production animals. However, both nutrients are extensively degraded during digestion in the rumen. This thesis comprised three experiments. First, four cows equipped with a rumen cannula and catheters in the portal vein and a mesenteric artery received a post-ruminal bolus of: 1) cyanocobalamin (CN-CBL) alone (0.1 g) [gram], 2) CN-CBL (0.1 g) + casein (10 g) or 3) CN-CBL (0.1 g) + whey proteins (10 g). After the bolus, blood samples were taken until 24 h [hour] post-bolus. The intestinal absorption of CN-CBL was greater when the vitamin …
Evaluation Of Porcine Ipec-J2 Cell Line Growth Rate And Immune Response To E. Coli (0111:B4) Lps, Xiaofan Wang
Evaluation Of Porcine Ipec-J2 Cell Line Growth Rate And Immune Response To E. Coli (0111:B4) Lps, Xiaofan Wang
Graduate Theses and Dissertations
The objective of this study was to evaluate the intestinal porcine epithelial cell-jejunum 2 (IPEC-J2) cell line as a model to study the innate immune function of live pigs. Growth rates of IPEC-J2 cells in T-75 flasks and 96-well plates were evaluated using a hemocytometer and spectrophotometer for cell quantity measurements to determine growth rate and doubling time. Growth rates of IPEC-J2 cells in T-75 flasks and 96-well plates were 0.4016 and 0.2851 times of doubling/day respectively with a doubling time of 1.73 d and 2.43 d, respectively. Confluent IPEC-J2 monolayers were tested at five time intervals (0, 1, 2, …
The Effects Of Heat Stress On Immunity In Laying Hens And Dairy Cattle, Rebecca Ann Strong
The Effects Of Heat Stress On Immunity In Laying Hens And Dairy Cattle, Rebecca Ann Strong
Open Access Theses
With the increase in global climate change and the population growth driving the high demand for additional food production, heat stress (HS) is a major concern in the livestock industry across all species. Animals experience HS when exposed to high environmental temperatures outside their thermal neutral zone. The level of the effects can vary due to the length and intensity of HS to which the animal is exposed to. In experiment one, laying hens with access to cooled perches during HS had a lower heterophil to lymphocyte ratio compared to the control hens after 4 h of acute heat stress, …
Prediction Of Parturition And Dystocia In Holstein-Friesian Cattle, And Cesarean Section In Dystocic Beef Cattle, Wen Han Mark Hiew
Prediction Of Parturition And Dystocia In Holstein-Friesian Cattle, And Cesarean Section In Dystocic Beef Cattle, Wen Han Mark Hiew
Open Access Dissertations
Dystocia is a major problem in the dairy industry as it causes livestock and economic loss. It is more frequently seen in primiparous cattle compared to their multiparous counterparts due to their smaller stature and the slow maturation of pelvic dimensions. In some instances, human intervention of the parturition process is imperative to avoid pain, injury, and mortality of the neonate and the dam. The ability to accurately predict dystocia and the time of parturition will ensure that timely assistance can be given to animals that are of high risk of dystocia.^ The present thesis contains four studies that explore …
Clinical Investigation Of Plethysmographic Variability Index: A Derivative Index Of Pulse Oximetry In Anesthetized Dogs, Vaidehi V. Paranjape
Clinical Investigation Of Plethysmographic Variability Index: A Derivative Index Of Pulse Oximetry In Anesthetized Dogs, Vaidehi V. Paranjape
Open Access Theses
Plethysmographic Variability Index (PVI) is a derivative index of pulse oximetry that allows evaluating an individual's intravascular volume status. Perfusion Index (PI) represents the strength of pulse signal at the anatomic site of measurement from which PVI is calculated using changes in PI over respiratory cycles. Plethysmographic Variability Index has been used to detect hypovolemia and predict fluid responsiveness in mechanically ventilated human patients however, fewer studies are available in spontaneously breathing patients. The use of PVI has not been explored extensively in dogs so far. The goals of this study were to establish a common range for PVI and …
Characterization Of Corynebacterium Pseudotuberculosis Biovar Equi Isolates Obtained From Cal Poly Horses And Review Of Application Of Transposons To Better Prevent Pigeon Fever In Horses, Irene Hasen
Animal Science
No abstract provided.
Isoflupredone Acetate As Ancillary Therapy For Bovine Respiratory Disease In High-Risk Stocker Calves, Claire E. Crews
Isoflupredone Acetate As Ancillary Therapy For Bovine Respiratory Disease In High-Risk Stocker Calves, Claire E. Crews
Animal Science Undergraduate Honors Theses
Bovine respiratory disease (BRD) is the leading cause of illness and death in U.S. feedlot cattle. This study evaluated the use of isoflupredone acetate in the treatment of BRD. Crossbred male beef calves (n = 192; BW = 221 ± 3.9 kg) were acquired in two blocks from regional auction markets and transported to the University of Arkansas Stocker and Receiving Cattle Unit. Calves were observed daily for signs of respiratory illness. Antibiotic treatment was administered if calves displayed signs of respiratory illness and rectal temperature was ≥ 40 °C. Calves (n = 72) requiring antibiotic treatment were assigned randomly …
Chitosan Reduces Enteric Colonization Of Campylobacter In Young Chickens, But Not On Post-Harvest Chicken Skin Samples, Hanna Royce Arambel
Chitosan Reduces Enteric Colonization Of Campylobacter In Young Chickens, But Not On Post-Harvest Chicken Skin Samples, Hanna Royce Arambel
Graduate Theses and Dissertations
Worldwide, Campylobacter is one of the leading causes of foodborne bacterial gastroenteritis causing an estimated 1.3 million infections in the United States alone. Consumption and/or cross-contamination of raw or undercooked poultry products have been linked as the most common source of Campylobacter infection, making the poultry industry a target for Campylobacter reduction strategies. Campylobacter is prevalent in most poultry flocks in the United States, with as many as 90% of flocks Campylobacter-positive at the time of slaughter. It is estimated that a reduction of Campylobacter in poultry would greatly reduce the risk of campylobacteriosis in humans. Unfortunately, there are …
The Spread And Potential Control Of Disease Across The Domestic Cattle-Wildlife Interface, Rachel Jackson
The Spread And Potential Control Of Disease Across The Domestic Cattle-Wildlife Interface, Rachel Jackson
Chancellor’s Honors Program Projects
No abstract provided.
Cd4 Silencing In Thymocytes Is Opposed By The Enforced Association Of P300 Hat, Hdac1 Or Suv39h1 With Runx Transcription Factors, Christyne Ayne Kane
Cd4 Silencing In Thymocytes Is Opposed By The Enforced Association Of P300 Hat, Hdac1 Or Suv39h1 With Runx Transcription Factors, Christyne Ayne Kane
Doctoral Dissertations
The transcription factors Runx1 and Runx3 are required for permanent silencing of CD4 in maturing CD8+ thymocytes. Runx binding to consensus sites within the CD4 silencer region is required for CD4 silencing post-positive selection. The Runx nuclear matrix targeting sequence (NMTS) is required for CD4 silencing and is implicated in binding to the histone acetyltransferase (HAT) p300, histone deacetylases (HDAC), and histone methyltransferase (HMT) SUV39H1 proteins. Epigenetic modifications of chromatin or post-translational modifications of Runx itself as a result of Runx association with these enzymes may be important for establishment of long-term CD4 silencing. In this study, we show that …
Using Progesterone As An Indicator Of Ovarian Response To Stimulation In Cattle, Kayla Mariah Kauffman
Using Progesterone As An Indicator Of Ovarian Response To Stimulation In Cattle, Kayla Mariah Kauffman
Animal Science
No abstract provided.
Análisis De La Capacidad Diagnóstica De Zoonosis Neurológicas De Tipo Viral En Équidos En Cundinamarca, Ximena Bernal
Análisis De La Capacidad Diagnóstica De Zoonosis Neurológicas De Tipo Viral En Équidos En Cundinamarca, Ximena Bernal
Medicina Veterinaria
Las zoonosis de tipo viral en equinos, su detección y diagnóstico se han convertido en un reto para la salud pública en Colombia, ya que son enfermedades de declaración obligatoria ante las autoridades sanitarias y considerando la alta morbilidad y letalidad que estas enfermedades pueden llegar a causar en los équidos, se busca facilitar prácticas de manejo, de exportación e importación, eliminación, prevención y control. Teniendo en cuenta esto, se realizó el trabajo haciendo una comparación acerca de las pruebas diagnósticas realizadas en el departamento de Cundinamarca para este tipo de zoonosis y las realizadas internacionalmente, midiendo en términos de …
Estudio De Viabilidad Para La Creación De Una Empresa Productora Y Comercializadora De Quesos Artesanales Maduros, Utilizando Como Materia Prima Leche De La Raza Montbéliarde, Sandra Del Pilar Medina Vanegas
Estudio De Viabilidad Para La Creación De Una Empresa Productora Y Comercializadora De Quesos Artesanales Maduros, Utilizando Como Materia Prima Leche De La Raza Montbéliarde, Sandra Del Pilar Medina Vanegas
Medicina Veterinaria
En la actualidad, el sector agroindustrial colombiano se encuentra en una situación crítica, al enfrentarse a unos acuerdos comerciales con países que han fortalecido los sistemas de producción ganadera a través de muchos años, lo anterior trae como consecuencia una competencia inequitativa que lleva a un posible fracaso principalmente de medianos y pequeños productores que se han regido por sistemas tradicionales, con bajo nivel de tecnificación y sanidad, lo cual es el principal factor excluyente para el mercado externo. Es por ello, que se deben buscar nuevas alternativas de producción con miras a mercados internacionales y que satisfagan la creciente …
Relationships Between Equine Management Practices And Intestinal Parasite Infection, Abigail Pagel
Relationships Between Equine Management Practices And Intestinal Parasite Infection, Abigail Pagel
Honors Projects
Parasitology is an important area of veterinary medicine, but the risk factors for high parasite loads are not well-understood. Equine intestinal parasites can cause extensive disease and death. In the current study, the relationship between equine intestinal parasite loads and adherence to veterinary guidelines for equine management practices was studied. Satisfactory adherence to guidelines regarding food, pasture, and flooding management was related to lower parasite loads. Adherence to guidelines regarding deworming, quarantine, bedding, and water did not appear to lower parasite loads. Still, adhering to these guidelines has been shown to improve equine welfare, even if they are not related …
Examination Of The Snsag Surface Antigen Gene Family In Sarcocystis Neurona, Ablesh Gautam
Examination Of The Snsag Surface Antigen Gene Family In Sarcocystis Neurona, Ablesh Gautam
Theses and Dissertations--Veterinary Science
Sarcocystis neurona is a protozoan parasite that causes the serious neurologic disease equine protozoal myeloencephalitis (EPM). The life cycle of S. neurona progresses through multiple developmental stages that differ morphologically and molecularly. The S. neurona merozoite surface is covered by multiple related proteins, which are orthologous to the surface antigen (SAG) gene family of Toxoplasma gondii. The SAG surface antigens in T. gondii and another related parasite Neospora caninum are life cycle stage-specific and seem necessary for parasite transmission and persistence of infection. The present research was conducted to explore the gene family of SnSAGs in S. …
Role Of Viral And Host Factors In Influenza Virus Mediated Inhibition Of Interleukin-23, Ashish Tiwari
Role Of Viral And Host Factors In Influenza Virus Mediated Inhibition Of Interleukin-23, Ashish Tiwari
Theses and Dissertations--Veterinary Science
Influenza virus is one of the major respiratory pathogens of humans as well as animals, including equines. There is an increasing evidence that bacterial infections are the most common cause of the death during influenza. In horses also, secondary bacterial pneumonia can lead to death, and surviving horses may take up to six months for the complete recovery resulting in heavy economic loss to the equine industry. Interleukin (IL)-23 mediated innate immune response has been shown to protect the host from various respiratory bacterial infections. However, studies to investigate the role of host and viral factors in the regulation of …