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Full-Text Articles in Life Sciences

Effect Of Essential Oils In The Control Of Fungal Diseases In Small Grains, Esneider Mahecha Bojaca Jan 2022

Effect Of Essential Oils In The Control Of Fungal Diseases In Small Grains, Esneider Mahecha Bojaca

Electronic Theses and Dissertations

Spring wheat (Triticum aestivum L.) and oats (Avena sativa L.) are important crops due to their high consumption in our daily diet worldwide. They are the main food of consumption per capita due to the high amino-acid content as well of vitamins. However, grain production is limited due to the negative impact of the diseases that cause significant yield loss. Diseases in oats, such as crown rust caused by Puccinia coronata f. sp. avenae (Pca), and in wheat such as Fusarium head blight (FHB) caused by the fungus Fusarium graminearum. Foliar diseases such as tan spot incited by the fungi …


Innovative Resources In Small Ruminant Health, Sarah Paluso May 2019

Innovative Resources In Small Ruminant Health, Sarah Paluso

Electronic Theses and Dissertations

Caseous lymphadenitis (CL) is a chronic bacterial infection caused by Corynebacterium pseudotuberculosis (C. pseudoTB) that affects small ruminants. This disease has a worldwide prevalence and results in significant economic losses to the sheep and goat industries. Antibiotics have had limited success in treating CL, due to the difficulty of penetrating the dry, thick-walled abscesses that characterize this disease. Essential oils are complex bioactive compounds that have been increasingly explored as sources of antimicrobial activity. Due to the nature of these oils, tissue and wood penetration may be possible, enabling topical and environmental treatment (e.g.; disinfectants of farm surfaces, such as …


Effects Of Commercial Feed Additives On The Gut Microbiota Of Food Animals, Prakash Poudel Jan 2019

Effects Of Commercial Feed Additives On The Gut Microbiota Of Food Animals, Prakash Poudel

Electronic Theses and Dissertations

Weaning is a stressful event of newborn animals which can lead to dysbiosis in the GIT causing invasion of pathogens, retarded growth, high incidence of diarrhea, and increased neonatal mortality. Since antibiotics use in livestock production have been regulated, various feed additives have been designed as antibiotic alternatives to use in newborn animal during weaning. This thesis investigated the dynamics of bacterial composition of GIT in weaned animals fed commercial feed additives by analysis of high throughput sequencing data generated from PCR-amplified DNA targeting V1-V3 region of 16S rRNA gene. Experiment 1 investigated the rumen environment of neonatal calves fed …


Evaluation Of Essential Oils (Stay Strong) For Dairy Calves, Kelly Ann Froehlich Jan 2016

Evaluation Of Essential Oils (Stay Strong) For Dairy Calves, Kelly Ann Froehlich

Electronic Theses and Dissertations

Stay Strong (SS, Ralco Inc., Marshall, MN) is a blend of essential oils (EO) and prebiotic fiber technologies designed to promote immunity and stimulate appetite, helping to diminish health challenges and stresses experienced by newborn calves. Current feeding inclusion rates are unknown to achieve optimal performance in the first 8 weeks of life. The study objectives were to determine the optimal feeding inclusion rate of SS when added to milk replacer (MR) to achieve optimal performance when compared to a yeast cell wall (YCW). One hundred Holstein calves were blocked by birth date and randomly assigned to 1 of 5 …


An Evaluation Of Feeding A Blend Of Essential Oils And Cobalt Lactate To Lactating Dairy Cows, Olivia Jayne Kuester Jan 2016

An Evaluation Of Feeding A Blend Of Essential Oils And Cobalt Lactate To Lactating Dairy Cows, Olivia Jayne Kuester

Electronic Theses and Dissertations

The objective of this study was to determine if the inclusion of a blend of essential oils and cobalt lactate (EOC) in the diet of lactating dairy cows could result in improved nutrient utilization and lactational performance in addition to assessing the application of EOC to control feed mycotoxins and spoilage. The trial was conducted in two experimental periods (Phase 1 (P1) and Phase 2 (P2)) on a commercial dairy in southwest Minnesota equipped with two robotic milking units. Phases 1 and 2 were cross over design trials with two pens. Cows were housed in two freestall pens (57 ± …