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South Dakota State University

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Articles 121 - 150 of 260

Full-Text Articles in Dairy Science

2011 Dairy Digest, South Dakota State University Dairy Club Jan 2011

2011 Dairy Digest, South Dakota State University Dairy Club

Dairy Digest

No abstract provided.


Respiratory Disease In Young Dairy Calves., A. D. Garcia, R. Daly Jan 2010

Respiratory Disease In Young Dairy Calves., A. D. Garcia, R. Daly

Dairy Science Publication Database

Respiratory disease is the second leading cause of death losses (scours is the first) in un-weaned heifer calves. Respiratory problems have increased by 34 percent in the last twenty years resulting in nearly 21 percent of all newborn calf losses (NAHMS. 2007). Heifers that survive continue to perform poorly as adult cows. In order to prevent this costly problem it is important to address both determinant and predisposing causes.


Sdsu Dairy Digest 2010, South Dakota State University Dairy Club Jan 2010

Sdsu Dairy Digest 2010, South Dakota State University Dairy Club

Dairy Digest

No abstract provided.


The Jackrabbit Dairy Review, Vikram Mistry Jan 2010

The Jackrabbit Dairy Review, Vikram Mistry

The Jackrabbit Dairy & Food Review

No abstract provided.


Enfermedad Respiratoria En Los Terneros Lecheros, Como Prevenirla, A. D. Garcia, A. R. Daly Jan 2010

Enfermedad Respiratoria En Los Terneros Lecheros, Como Prevenirla, A. D. Garcia, A. R. Daly

Dairy Science Publication Database

La enfermedad respiratoria es la segunda causa de muerte (diarrea es la primera) en las terneras lecheras no destetadas. Los problemas respiratorios han aumentado en un 34 por ciento en los últimos 20 años, causando cerca de 21 por ciento de la mortandad de los terneros (NAHMS 2007). Las terneras que sobreviven continúan con un desempeño pobre al convertirse en vacas adultas. Para prevenir este problema, es importante tener en cuenta tanto causas predisponentes como determinantes.


2009 Sdsu Dairy Digest, South Dakota State University Dairy Club Jan 2009

2009 Sdsu Dairy Digest, South Dakota State University Dairy Club

Dairy Digest

No abstract provided.


Alimentación Preventiva De La Vaca Lechera En Transición., A. D. Garcia, A. R. Hippen Jan 2009

Alimentación Preventiva De La Vaca Lechera En Transición., A. D. Garcia, A. R. Hippen

Dairy Science Publication Database

El periodo de transición en la vaca lechera se caracteriza por una disminución del consumo de alimento que comienza unos días antes del parto y que recién se recupera varios días después del mismo. Esta caída en la cantidad de alimento ingerido resulta en un desbalance entre los requerimientos nutricionales y los nutrientes absorbidos luego de la ingesta. Existen otros factores relacionados con el volumen y la forma física del alimento que pueden llevar a otros trastornos frecuentes del peri-parto. Por lo general el diagnóstico veterinario se basa en la manifestación clínica de una determinada afección. Para tener un mayor …


The Jackrabbit Dairy Review, Vikram Mistry Jan 2009

The Jackrabbit Dairy Review, Vikram Mistry

The Jackrabbit Dairy & Food Review

No abstract provided.


The Jackrabbit Dairy Review, Vikram Mistry Jan 2008

The Jackrabbit Dairy Review, Vikram Mistry

The Jackrabbit Dairy & Food Review

No abstract provided.


2008 Dairy Digest, South Dakota State University Dairy Club Jan 2008

2008 Dairy Digest, South Dakota State University Dairy Club

Dairy Digest

No abstract provided.


The Jackrabbit Dairy Review, Vikram Mistry Jan 2007

The Jackrabbit Dairy Review, Vikram Mistry

The Jackrabbit Dairy & Food Review

No abstract provided.


Dairy Digest 2007, South Dakota State University Dairy Club Jan 2007

Dairy Digest 2007, South Dakota State University Dairy Club

Dairy Digest

No abstract provided.


Dairy Digest 2006, South Dakota State University Dairy Club Jan 2006

Dairy Digest 2006, South Dakota State University Dairy Club

Dairy Digest

No abstract provided.


The Jackrabbit Dairy Review, Vikram Mistry Jan 2006

The Jackrabbit Dairy Review, Vikram Mistry

The Jackrabbit Dairy & Food Review

No abstract provided.


The Jackrabbit Dairy Review, Vikram Mistry Jan 2005

The Jackrabbit Dairy Review, Vikram Mistry

The Jackrabbit Dairy & Food Review

No abstract provided.


Dairy Digest 2005, South Dakota State University Dairy Club Jan 2005

Dairy Digest 2005, South Dakota State University Dairy Club

Dairy Digest

No abstract provided.


Ruminal And Plasma Responses In Dairy Cows To Drenching Or Feeding Glycerol, Peter Linke Jan 2005

Ruminal And Plasma Responses In Dairy Cows To Drenching Or Feeding Glycerol, Peter Linke

The Journal of Undergraduate Research

Four Holstein dairy cows (137 DIM, 60 kg milk/d) were used in a Latin square with 1-wk periods to evaluate the effect of methods of oral delivery of glycerol on ruminal VFA and plasma concentrations of glucose, 6-hydroxybutyrate (BHBA), nonesterified fatty acids (NEFA), and insulin. All cows were fed only grass hay for ad libitum consumption during 12 h before the experiment. At the start of the experiment, time 0, all cows were fed 5 kg of cracked corn. Treatments administered at time 0 were: 1) control (C), no glycerol; 2) fed glycerol (F), 1 kg of glycerol solution (80% …


The Jackrabbit Dairy Review, Vikram Mistry Jan 2004

The Jackrabbit Dairy Review, Vikram Mistry

The Jackrabbit Dairy & Food Review

No abstract provided.


Dairy Digest 2004, South Dakota State University Dairy Club Jan 2004

Dairy Digest 2004, South Dakota State University Dairy Club

Dairy Digest

No abstract provided.


Dairies And Local Economic Development, Alvaro Garcia, Kenneth Kalscheur Jan 2004

Dairies And Local Economic Development, Alvaro Garcia, Kenneth Kalscheur

SDSU Extension Fact Sheets

This fact sheet is one in a series intended to answer — with science-based land-grant university research — questions frequently asked by the public about issues and needs affecting agricultural growth, urban expansion, and rural community development in South Dakota. During 2002, the year with latest available USDA figures, livestock production in South Dakota represented 50.7% of total agricultural cash receipts, followed by 42.4% for crops and 6.9% for government payments. Dairy products, at $178,176,000, were fifth of all agricultural cash receipts and were a highly significant portion of the state’s economy. In light of possible dairy expansion in the …


Influence Of Diets Formulated To Increase The Supply Of Ketones Or Ketone Precursors On The Carbohydrate Status And Performance Of Transition Dairy Cows, Jeffrey Michael Defrain Jan 2004

Influence Of Diets Formulated To Increase The Supply Of Ketones Or Ketone Precursors On The Carbohydrate Status And Performance Of Transition Dairy Cows, Jeffrey Michael Defrain

Electronic Theses and Dissertations

Research to date has focused on increasing the supply of glucose precursors in transition dairy cows to reduce ketosis. Ketones and ketone bodies represent energy sources for body tissues; therefore, conserving blood glucose for lactose synthesis in the mammary gland. This led to the hypothesis that transition cows might benefit from diets formulated to stimulate rumen epithelial ketogenesis or dietary ingredients supplying ketone precursors. A series of experiments were conducted to study the impact of diets formulated to increase the supply of ketones (via feeding lactose, glycerol, or an alphaamylase enzyme preparation) or ketone precursors (feeding Ca soaps of longchain …


Dairy Digest 2003, South Dakota State University Dairy Club Jan 2003

Dairy Digest 2003, South Dakota State University Dairy Club

Dairy Digest

No abstract provided.


A Comparison Of Methods For On-Farm Determination Of Failure Of Passive Transfer Of Immunoglobulin To Dairy Calves, Ann Harvey Jan 2003

A Comparison Of Methods For On-Farm Determination Of Failure Of Passive Transfer Of Immunoglobulin To Dairy Calves, Ann Harvey

The Journal of Undergraduate Research

Two commercially available, qualitative, on-farm test kits (Midland BioProducts Inc., Boone, lA), utilizing either serum or whole blood to evaluate failure of passive transfer (FPT) of immunoglobulins, were evaluated using 38 Holstein calves. Results from the kits were compared with refractometry determination of serum proteins and radial immunodiffusion determinations specific for IgG (RID; Triple J Farms, Bellingham,WA). Blood samples were collected immediately following birth before first colostrum feeding and at 48 h. At birth, serum protein concentrations averaged 4.52 g/dl and IgG averaged 8.6 mg/dl, respectively, for refractometer and RID. Forty eight hours after feeding colostrum, serum protein concentrations averaged …


Dairy Digest 2002, South Dakota State University Dairy Club Jan 2002

Dairy Digest 2002, South Dakota State University Dairy Club

Dairy Digest

No abstract provided.


2001 Dairy Digest, South Dakota State University Dairy Club Jan 2001

2001 Dairy Digest, South Dakota State University Dairy Club

Dairy Digest

No abstract provided.


Dairy Digest 2000, South Dakota State University Dairy Club Jan 2000

Dairy Digest 2000, South Dakota State University Dairy Club

Dairy Digest

No abstract provided.


Dairy Digest 1998-1999, South Dakota State University Dairy Club Jan 1999

Dairy Digest 1998-1999, South Dakota State University Dairy Club

Dairy Digest

No abstract provided.


Dairy Digest 1997-1998, South Dakota State University Dairy Club Jan 1998

Dairy Digest 1997-1998, South Dakota State University Dairy Club

Dairy Digest

No abstract provided.


Dairy Digest 1996-1997, South Dakota State University Dairy Club Jan 1997

Dairy Digest 1996-1997, South Dakota State University Dairy Club

Dairy Digest

No abstract provided.


Use Of The Relative Dose Response Assay To Determine The Vitamin A Status Of Neonatal Calves: Effects Of Season On Colostrum Quality And Immunological Parameters, Mary Jo Boner Jan 1997

Use Of The Relative Dose Response Assay To Determine The Vitamin A Status Of Neonatal Calves: Effects Of Season On Colostrum Quality And Immunological Parameters, Mary Jo Boner

Electronic Theses and Dissertations

Plasma vitamin A is not a reliable indicator of vitamin A status. Therefore, the feasibility of using the relative dose response (RDR) assay as a method for determining vitamin A status of calves was examined. In addition, effects of colostrum quality and season on vitamin A status and health of calves were determined. Blood was sampled from the jugular vein of 16 newborn calves to establish values over a 24 h period for immunoglobulin M (IgM) concentration, hematocrit, serum protein concentration, and leukocyte differentials. Liver biopsies were performed at birth, and successfully completed for 11 calves. Blood samples were obtained …