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Articles 1 - 13 of 13
Full-Text Articles in Dairy Science
Social Ecological Food Systems: Sustainability Lessons From Maine Dairy Networks, Julia B. Mcguire
Social Ecological Food Systems: Sustainability Lessons From Maine Dairy Networks, Julia B. Mcguire
Electronic Theses and Dissertations
Milk production has played an integral role in the culture, landscape, and economy of Maine’s agriculture. Maine dairy farmers have faced numerous sustainability challenges to economic, environmental, and social aspects of their industry. Like many other complex social ecological systems, the Maine dairy industry faces a gap between scientific knowledge and actionable management or policy. A cultural dichotomy exists between conventional and organic farming. Shifting the focus from this binary, metrics such as social capital may play a key role in solving sustainability issues. Difficulties arise in the governance of complex social ecological systems when the scales of assessment, management, …
Growth Performance, Nutrient Utilization, And Metabolic Profile Of Dairy Heifers Fed Diets High In Distillers Grains With Different Forage To Concentrate Ratios, Angela Kristia Manthey
Growth Performance, Nutrient Utilization, And Metabolic Profile Of Dairy Heifers Fed Diets High In Distillers Grains With Different Forage To Concentrate Ratios, Angela Kristia Manthey
Electronic Theses and Dissertations
Two studies were conducted to evaluate the effect of limit-feeding heifers distillers grains with solubles (DDGS) with varying forage to concentrate ratios. The effects on growth, feed efficiency, rumen fermentation, nutrient digestibility, metabolic profile and onset of puberty, as well as post trial performance were investigated. First, a 16-wk feeding trial was conducted using 48 Holstein heifers to evaluate effects of dietary treatment on dry matter intake (DMI), average daily gain (ADG), growth performance, rumen fermentation, and nutrient digestibility. Treatments were 1) 30% DDGS, with the diet fed at 2.65% of body weight (BW) (30DG), 2) 40% DDGS, with the …
An Evaluation Of Rumen Modifiers For Lactational Performance And Nutrient Digestibility By Cows, Prakash Poudel
An Evaluation Of Rumen Modifiers For Lactational Performance And Nutrient Digestibility By Cows, Prakash Poudel
Electronic Theses and Dissertations
Three studies were conducted to evaluate a commercial blend of essential oils, active dried yeast product and cobalt lactate on production performance, rumen fermentation and nutrient digestibility by cows by using in vivo and in vitro methods. The first study evaluated the lactational performance and nutrient digestibility of lactating Holstein dairy cows fed two commercial supplements: 1) a propriety blend of essential oils and Cobalt lactate (EOC) (Stay Strong, Ralco, Inc., Marshall, MN) and 2) active dried yeast (ADY) (Omnigen AF, Prince Agri Products, Inc., Quincy, IL). The 12-week experiment demonstrated no differences in milk production, milk composition, and feed …
Improving Feed Efficiency Through Forage Strategies For Increasing Dairy Profitability And Sustainability, Jon Patrick Pretz
Improving Feed Efficiency Through Forage Strategies For Increasing Dairy Profitability And Sustainability, Jon Patrick Pretz
Electronic Theses and Dissertations
Three studies were conducted to determine production parameters and study specific hypothesis in regard to improving feed efficiency through various forage utilization strategies with or without the inclusion of various supplemented products. The first study evaluated the supplementation of a cobalt-lactate product and its effects on fiber digestibility and milk production parameters when fed to cows consuming a 70% forage diet. Treatments included: 1) CONTROL diet containing 12.5 mg/cow/d of cobalt (carbonate carbonate) and 2) TEST diet being the same basal diet but including an additional 50 mg/cow/d of cobalt via a 1% Co-lactate product (Co-Max®). In a feeding trial …
Role Of Exopolymeric Substances In Biofilm Formation On Dairy Separation Membranes, Nuria Garcia-Fernandez
Role Of Exopolymeric Substances In Biofilm Formation On Dairy Separation Membranes, Nuria Garcia-Fernandez
Electronic Theses and Dissertations
In the concentration of cheese whey by membrane filtration processes, fouling is a major limiting factor that leads to flux decline and affects product quality. The growth of biofilms on membranes contributes to biofouling. Biofilms are very difficult to eliminate, and will serve as the seed for additional biofilm development and product contamination. The biofilm matrix is composed mainly of microbial exopolymeric substances (EPS), and therefore EPS is thought to help bacteria to adhere and form biofilms by acting as a cementing agent. The first research project under this study was conducted with the aim of elucidating the role of …
Effects Of Bran Treatment On Rheology And Sensory Quality Of Whole Wheat Flat Bread, Jigyasha Mishra
Effects Of Bran Treatment On Rheology And Sensory Quality Of Whole Wheat Flat Bread, Jigyasha Mishra
Electronic Theses and Dissertations
The purpose of this research was to study the differences in the quality of 100% whole wheat flour (WWF) when the bran fraction was subjected to mild solvent treatment before reconstitution with the endosperm. The bran treatments included water washing and washing with ethanol solutions (50% and 100%). WWF prepared with untreated bran served as the control. Effects of these treatments on particle size, chemical composition, color, dough rheology, product formulation, and sensory characteristics of 100% whole wheat flour were studied. Grains of five HRSW cultivars (Advance, Prevail, Select, Brick and Forefront) were milled using a Quadrumat Senior mill. Gluten …
Three Overlooked Issues: Water Quality, Forage Quality, And Forage Blends Impacting The Feed Efficiency Of Dairy Cows, Ishwary Prasad Acharya
Three Overlooked Issues: Water Quality, Forage Quality, And Forage Blends Impacting The Feed Efficiency Of Dairy Cows, Ishwary Prasad Acharya
Electronic Theses and Dissertations
The overall objectives of the six studies were to increase the feed efficiency in lactating dairy cows. The first study evaluated the efficacy of different water sources and treatment systems on ruminal parameters using an in vitro gas production system. Outcomes of the study suggested that the source and nutrient quality of water can affect rate of ruminal fermentation. Thus, use of real farm water being offered to the cow to conduct in vitro gas production measurements may accurately predict the ruminal fermentation, digestibility and total gas production. The second study evaluated two recently developed leafy-floury corn silage hybrids against …
Manufacture, Concentration, And Functionality Of Micellar Casein Concentrate, Dustin Grossbier
Manufacture, Concentration, And Functionality Of Micellar Casein Concentrate, Dustin Grossbier
Electronic Theses and Dissertations
This research has been structured into 3 major parts. The first part evaluates a centrifugal evaporator to concentrate micellar casein concentrate (MCC). The second part evaluates a wiped film evaporator (WFE) to concentrate MCC. The third part evaluates heat stability of the high concentration MCC produced by WFE. In part 1, the primary objective was to achieve >25% total solids (TS) without a loss of water removal rate associated with high solids materials. This is of importance, industrially, as this could reduce processing costs or eliminate drying all together. The major finding was that it did not offer any benefits …
Study Of The Effect Of Feeding Highly Digestible Corn Based Calf Starter On The Growth Performance Of Calves, Shruti Srivastava
Study Of The Effect Of Feeding Highly Digestible Corn Based Calf Starter On The Growth Performance Of Calves, Shruti Srivastava
Electronic Theses and Dissertations
New corn hybrids have been developed by Masters Choice (MC) that vary in energy density and starch digestibility. These MC hybrids have lower starch densities due to an altered starch structure, which allows for greater ruminal and intestinal starch digestion. The altered starch structure of these new hybrids results in reduced feed manufacturing costs (i.e., grinding). Thirty (30) 1 to 3 d old (40.6 ± 1.72 kg) Holstein heifer calves were randomly assigned to 1 of 2 calf starters to measure growth performance of Holstein heifer calves through 8 weeks of age. Treatments were: 1) Hard starch (HS) corn calf …
Evaluation Of Essential Oils (Stay Strong) For Dairy Calves, Kelly Ann Froehlich
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 …
Inactivation Of Thermodynamic Sporeformers And Spores In Skim Milk By Continuous Ultrasonication And Hydrodynamic Cavitation In Combination With Thermal Treatments, Dikshi Bawa
Electronic Theses and Dissertations
Studies were conducted to determine the effectiveness of ultrasonication and hydrodynamic cavitation, in a continuous mode, alone and in combination with thermal treatments, on heat resistant aerobic sporeformers and spores in skim milk, and skim milk concentrate. The first study was conducted to investigate the effectiveness of a continuous ultrasonication process to reduce thermoduric Bacillus coagulans cells in skim milk. A 25% reduction was obtained by lab pasteurization alone, whereas ultrasonication alone resulted in an inactivation of 92% after 12 passes (80 sec exposure time per pass). Ultrasonication when combined with pasteurization resulted in further increased inactivation to 99.98%. It …
Impact Of New Processing Technologies On The Physical And Functional Properties Of Skim Milk And Skim Milk Concentrate, Harsh Dahiya
Impact Of New Processing Technologies On The Physical And Functional Properties Of Skim Milk And Skim Milk Concentrate, Harsh Dahiya
Electronic Theses and Dissertations
United States is one of the largest producer of cow’s milk in the world and a substantial portion of this milk is converted into dried milk products, a category that is becoming increasingly important to the dairy industry. The processing treatments on skim milk and skim milk concentrate affect the functionality of resultant powders made from them, therefore processing treatments are crucial to modify physical and functional properties of skim milk, skim milk concentrates and the powders made from them. The objective of this research was to explore impact of new processing technologies hydrodynamic cavitation (HC) and carbon dioxide (CO2) …
An Evaluation Of Feeding A Blend Of Essential Oils And Cobalt Lactate To Lactating Dairy Cows, Olivia Jayne Kuester
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 ± …