Open Access. Powered by Scholars. Published by Universities.®

Dairy Science Commons

Open Access. Powered by Scholars. Published by Universities.®

2016

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 31 - 60 of 76

Full-Text Articles in Dairy Science

Evaluation Of Calving Indicators Measured By Automated Monitoring Devices To Predict The Onset Of Calving In Holstein Dairy Cows, V. Ouellet, E. Vasseur, W. Heuwieser, O. Burfeind, X. Maldague, É. Charbonneau Feb 2016

Evaluation Of Calving Indicators Measured By Automated Monitoring Devices To Predict The Onset Of Calving In Holstein Dairy Cows, V. Ouellet, E. Vasseur, W. Heuwieser, O. Burfeind, X. Maldague, É. Charbonneau

Physiology Collection

Dystocias are common in dairy cows and often adversely affect production, reproduction, animal welfare, labor, and economics within the dairy industry. An automated device that accurately predicts the onset of calving could potentially minimize the effect of dystocias by enabling producers to intervene early. Although many well-documented indicators can detect the imminence of calving, research is limited on their effectiveness to predict calving when measured by automated devices. The objective of this experiment was to determine if a decrease in vaginal temperature (VT), rumination (RT), and lying time (LT), or an increase in lying bouts (LB), as measured by …


Effect Of Green Tea On Interaction Of Lipid Oxidation Products With Sarcoplasmic And Myofibrillar Protein Homogenates Extracted From Bovine Top Round Muscle, Nahathai Stapornkul, Tatiana Prytkova, Lilian Were Jan 2016

Effect Of Green Tea On Interaction Of Lipid Oxidation Products With Sarcoplasmic And Myofibrillar Protein Homogenates Extracted From Bovine Top Round Muscle, Nahathai Stapornkul, Tatiana Prytkova, Lilian Were

Food Science Faculty Articles and Research

The interaction between lipid oxidation products and bovine sarcoplasmic (SP) and myofibrillar protein (MP) homogenates in the presence of green tea was investigated. To monitor the effect of green tea on lipid oxidation, aldehydes were measured while effect on protein was monitored via changes in myoglobin, thiols, and tryptophan fluorescence over nine days of refrigerated storage. The presence of SP and MP decreased free aldehydes in the buffers. The SP bound more aldehydes than MP. The tea compounds exhibited more favorable binding energies than aldehydes near histidine 64 close to the heme moiety of myoglobin. Addition of tea lowered tryptophan …


Efecto Del Tipo De Ubre, Morfología Del Pezón Y Tipo Racial Sobre La Duración Del Ordeño, En La Lechería Especializada El Guabito (Zarzal), Oscar Hernando Sánchez Rivera Jan 2016

Efecto Del Tipo De Ubre, Morfología Del Pezón Y Tipo Racial Sobre La Duración Del Ordeño, En La Lechería Especializada El Guabito (Zarzal), Oscar Hernando Sánchez Rivera

Zootecnia

No abstract provided.


Efecto De La Alimentación Controlada En Cerdas Lactantes Sobre Los Parámetros Productivos De La Granja, Cindy Lorena Torres Vera Jan 2016

Efecto De La Alimentación Controlada En Cerdas Lactantes Sobre Los Parámetros Productivos De La Granja, Cindy Lorena Torres Vera

Zootecnia

El presente trabajo se desarrolló en la granja porcicola Terranova, ubicada en el municipio de Obando Valle, en el II ciclo de 2014, teniendo como objetivo evaluar el efecto en los parámetro productivos y reproductivos en cerdas lactantes al implementar un nuevo protocolo de alimentación, el cual contó con la participación de 46 cerdas (38 multíparas y 8 primerizas) las cuales fueron divididas aleatoriamente en 2 grupos, uno control y otro experimental; para el grupo control se suministró 2kg de alimento en las horas de la mañana y noche (6:30, 9:00, 11:00 am, 1:30, 3:00, 6:30, 8:30, 9:30 y 10:30 …


Componentes Epidemiológicos Y Económicos Como Base Para La Toma De Decisiones En El Control De Mastitis Bovina En Ganaderías De Zipaquirá (Cundinamarca). Objetivo 2. Determinación De Agentes Bacterianos Causantes De La Mastitis Bovina En Pequeños Y Medianos Productores, Nayiby Viviana Romero Castillo Jan 2016

Componentes Epidemiológicos Y Económicos Como Base Para La Toma De Decisiones En El Control De Mastitis Bovina En Ganaderías De Zipaquirá (Cundinamarca). Objetivo 2. Determinación De Agentes Bacterianos Causantes De La Mastitis Bovina En Pequeños Y Medianos Productores, Nayiby Viviana Romero Castillo

Zootecnia

No abstract provided.


Monitoring Yogurt Culture Fermentation And Predicting Fermentation Endpoint With Fluorescence Spectroscopy, Timothey P. Mains, Frederick Alan Payne, Michael P. Sama Jan 2016

Monitoring Yogurt Culture Fermentation And Predicting Fermentation Endpoint With Fluorescence Spectroscopy, Timothey P. Mains, Frederick Alan Payne, Michael P. Sama

Biosystems and Agricultural Engineering Faculty Publications

Determination of the endpoint of yogurt culture fermentation is a process parameter that could benefit from automation. The feasibility of using a fluorescence sensor technology based on 280 nm excitation and 350 nm emission to predict the endpoint of yogurt culture fermentation was investigated and compared with the endpoint prediction from a near-infrared (880 nm) light backscatter sensor. Yogurt cultures with three levels of milk solids (8%, 10%, and 12%) and three temperatures (40°C, 43°C, and 46°C) were tested with three replications in a 3 x 3 factorial design (n = 27). Prediction models were developed for each optical measurement …


Body Condition Score And Plane Of Nutrition Prepartum Affect Adipose Tissue Transcriptome Regulators Of Metabolism And Inflammation In Grazing Dairy Cows During The Transition Period, M. Vailati-Riboni, M. Kanwal, O. Bulgari, S. Meier, N. V. Priest, C. R. Burke, J. K. Kay, S. Mcdougall, M. D. Mitchell, C. G. Walker, M. Crookenden, A. Heiser, J. R. Roche, J. J. Loor Jan 2016

Body Condition Score And Plane Of Nutrition Prepartum Affect Adipose Tissue Transcriptome Regulators Of Metabolism And Inflammation In Grazing Dairy Cows During The Transition Period, M. Vailati-Riboni, M. Kanwal, O. Bulgari, S. Meier, N. V. Priest, C. R. Burke, J. K. Kay, S. Mcdougall, M. D. Mitchell, C. G. Walker, M. Crookenden, A. Heiser, J. R. Roche, J. J. Loor

Physiology Collection

Recent studies demonstrating a higher incidence of metabolic disorders after calving have challenged the management practice of increasing dietary energy density during the last ~3 wk prepartum. Despite our knowledge at the whole-animal level, the tissue-level mechanisms that are altered in response to feeding management prepartum remain unclear. Our hypothesis was that prepartum body condition score (BCS), in combination with feeding management, plays a central role in the peripartum changes associated with energy balance and inflammatory state. Twenty-eight mid-lactation grazing dairy cows of mixed age and breed were randomly allocated to 1 of 4 treatment groups in a 2 × …


Dry Period Plane Of Energy: Effects On Glucose Tolerance In Transition Dairy Cows, S. Mann, F. A. Leal Yepes, M. Duplessis, J. J. Wakshlag, T. R. Overton, B. P. Cummings, D. V. Nydam Jan 2016

Dry Period Plane Of Energy: Effects On Glucose Tolerance In Transition Dairy Cows, S. Mann, F. A. Leal Yepes, M. Duplessis, J. J. Wakshlag, T. R. Overton, B. P. Cummings, D. V. Nydam

Physiology Collection

Overfeeding energy in the dry period can affect glucose metabolism and the energy balance of transition dairy cows with potential detrimental effects on the ability to successfully adapt to early lactation. The objectives of this study were to investigate the effect of different dry cow feeding strategies on glucose tolerance and on resting concentrations of blood glucose, glucagon, insulin, nonesterified fatty acids (NEFA), and β-hydroxybutyrate (BHB) in the peripartum period. Cows entering second or greater lactation were enrolled at dry-off (57 d before expected parturition) into 1 of 3 treatment groups following a randomized block design: cows …


Dairy Digest 2016, South Dakota State University Dairy Club Jan 2016

Dairy Digest 2016, South Dakota State University Dairy Club

Dairy Digest

No abstract provided.


The Jackrabbit Dairy Review, Vikram V. Mistry Jan 2016

The Jackrabbit Dairy Review, Vikram V. Mistry

The Jackrabbit Dairy & Food Review

No abstract provided.


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 Jan 2016

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 Jan 2016

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 …


Efecto De La Suplementación Con Silo De Rye Grass Lolium Perenne En Vacas De Trópico Alto Zipaquirá, Cundinamarca, Carlos Gómez, Daniel López Jan 2016

Efecto De La Suplementación Con Silo De Rye Grass Lolium Perenne En Vacas De Trópico Alto Zipaquirá, Cundinamarca, Carlos Gómez, Daniel López

Zootecnia

Con el fin de evaluar el efecto de la suplementación con silo de Rye Grass sobre la producción y composición de la leche en vacas de trópico alto, se planteó un estudio con 15 vacas Holstein, en segundo tercio de lactancia, divididas en 2 grupos experimentales, 1 se denomina T-ABC con 7 vacas y 2 T-SRG con 8 vacas. El suplemento se le ofreció en una razón de 4: 1 (4L / 1S) en el momento del ordeño, la cual se realizó en horas de la mañana y la tarde. Se tomaron muestras de leche de los dos ordeños se …


Relación Entre Clasificación Lineal Y Características Productivas En Vacas Holstein De Cundinamarca, Felipe Lanziano Vargas Jan 2016

Relación Entre Clasificación Lineal Y Características Productivas En Vacas Holstein De Cundinamarca, Felipe Lanziano Vargas

Zootecnia

El objetivo de esta investigación fue evaluar las características de tipo agrupadas con la producción de leche y el intervalo entre partos en ganado Holstein en Cundinamarca, Se utilizaron registros de producción, reproducción y conformación de 430 vacas Holstein ubicadas en 35 hatos lecheros de Cundinamarca. Se evaluaron 24 características de conformación (tipo) con una puntuación de 1 a 9 por una persona experta en evaluación lineal. Se realizó un análisis de correlación entre las características de tipo con producción de leche y el intervalo entre partos, adicionalmente, se realizó un análisis descriptivo de las características en vacas con más …


Calidad Higiénica De La Leche De 21 Ganaderías Medianas Pertenecientes Al Área 5 De Zipaquirá, Cundinamarca, Jorge Armando Suarez Suarez Jan 2016

Calidad Higiénica De La Leche De 21 Ganaderías Medianas Pertenecientes Al Área 5 De Zipaquirá, Cundinamarca, Jorge Armando Suarez Suarez

Zootecnia

No abstract provided.


Efecto De Una Sal Nitrogenada En Novillos En Fase De Ceba En Yopal Casanare, Angélica Yorleth Amézquita Guzmán Jan 2016

Efecto De Una Sal Nitrogenada En Novillos En Fase De Ceba En Yopal Casanare, Angélica Yorleth Amézquita Guzmán

Zootecnia

Este estudio se realizó para determinar el efecto de la sal nitrogenada en novillos en fase de ceba en Yopal, Casanare. Se plantearon dos tratamientos, T1: Sal nitrogenada y T2: Sal mineralizada, cada uno contó con 10 machos cebú comercial con peso promedio de 400 kg y edad promedio de 36 meses. El experimento se realizó en época seca, durante un tiempo de tres meses. Se evaluó el peso corporal y la ganancia de peso. Aunque no se encontraron diferencias significativas de ganancia de peso entre los promedios de los tratamientos, la sal nitrogenada incrementó en promedio 6 kg por …


Evaluación Y Comparación De Dos Sistemas De Producción Lechera Bovino Y Bufalino En Un Hato Del Magdalena Medio, Juan Sebastian Villamizar Quiroz Jan 2016

Evaluación Y Comparación De Dos Sistemas De Producción Lechera Bovino Y Bufalino En Un Hato Del Magdalena Medio, Juan Sebastian Villamizar Quiroz

Zootecnia

Uno de los factores que tiene mayor afectación en los sistemas de producción hoy en día son los aspectos climáticos, debido a sus fluctuaciones encontramos inestabilidad en la producción de forraje de calidad para una buena alimentación de nuestros animales. La problemática que se tiene es el inadecuado manejo de rotación de los potreros en los cuales pastorean las vacas y búfalas que se encuentras en producción, igualmente la calidad del forraje que están consumiendo se ve afectada por estas razones. Por eso se propuso el objetivo de determinación de la calidad, producción y composición botánica de las praderas suministrados …


Costos De Implementación De Las Buenas Prácticas De Ordeño En Cuatro Escenarios De Hatos Lecheros En Cundinamarca, Mariano Del Campo Parra Muñoz Jan 2016

Costos De Implementación De Las Buenas Prácticas De Ordeño En Cuatro Escenarios De Hatos Lecheros En Cundinamarca, Mariano Del Campo Parra Muñoz

Zootecnia

No abstract provided.


Implementación De Un Modelo De Partos Estacionales En Un Sistema De Cría Doble Propósito Bovino En El Piedemonte Llanero, Juan Harvey Castro Murillo Jan 2016

Implementación De Un Modelo De Partos Estacionales En Un Sistema De Cría Doble Propósito Bovino En El Piedemonte Llanero, Juan Harvey Castro Murillo

Zootecnia

No abstract provided.


Effect Of Direct-Fed Microbials And Enzyme Supplementation In Prepartum Holstein Cows On Colostrum And Calf Immunity, Erin M. Shangraw Jan 2016

Effect Of Direct-Fed Microbials And Enzyme Supplementation In Prepartum Holstein Cows On Colostrum And Calf Immunity, Erin M. Shangraw

Honors Theses and Capstones

In cows, colostrum is composed of several antibodies and nutrients to provide immunity and energy to the calf. Feeding calves high quality colostrum has been shown to improve calf health, leading to reduced mortality in calves and greater milk production in cows. The addition of direct-fed microbials (DFM) to cow diets has been theorized to improve feed efficiency and milk production, with studies showing mixed results. However, few experiments have studied the effect of feeding DFM on colostrum quality. In this experiment two treatments were given, 1) DFM and 2) DFM and enzymes (DFME). Colostrum was …


Dairy Research 2016, Full Report, B. Bradford Jan 2016

Dairy Research 2016, Full Report, B. Bradford

Kansas Agricultural Experiment Station Research Reports

Kansas State University is pleased to present the 2016 Dairy Research Report of Progress.


An Investigation Of The Use Of Natural Agents To Control Mycobacteria, Olga Lesniak Jan 2016

An Investigation Of The Use Of Natural Agents To Control Mycobacteria, Olga Lesniak

Theses

Economic losses that are caused by Mycobacterium avium paratuberculosis (MAP) infections represent a major obstacle for farmers and also for the dairy industry. In order to control the population of MAP, alternative control agents must be investigated. One of the studies described in this thesis focused on using a bacteriophage therapy based approach to assess its efficacy on simulated industrial environments and food models. Another study described in this thesis investigated the antimicrobial effects of parsley and garlic on a range of mycobacteria species. Both studies used conventional microbiological methods such as plaque assays, AlamarBlue assay (MABA) and growth curves, …


Development And Validation Of Gas Chromatographic Methods For Free Fatty Acid Determination In Dairy Products, David Mannion Jan 2016

Development And Validation Of Gas Chromatographic Methods For Free Fatty Acid Determination In Dairy Products, David Mannion

Theses

Quantification of free fatty acids (FFA) in dairy products by gas chromatography flame ion'^ation detection is an important requirement for qua'ity, research, nutritional, authenticity and legislative purposes. Common procedures are typically variants of either the fatty acid methyl esterification (FAME) or direct on-column injection methods developed more than two decades ago. This study involved the development of an alternative novel derivatization method using butylation, incorporating automation, reducing solvent usage that is applicable for a wide range of dairy products. The accuracy, precision, linearity, limits of detection and limits of quantification of all three methods were assessed for the quantification of …


Improving Feed Efficiency Through Forage Strategies For Increasing Dairy Profitability And Sustainability, Jon Patrick Pretz Jan 2016

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 Jan 2016

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 Jan 2016

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 Jan 2016

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 Jan 2016

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 Jan 2016

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 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 …