Journal of Dairy Science

Items from 1 to 20 out of 817 results

article

Use of microparticulated whey protein concentrate, exopolysaccharide-producing Streptococcus thermophilus, and adjunct cultures for making low-fat Italian Caciotta-type cheese

R. Di Cagno, I. De Pasquale, M. De Angelis, S. Buchin, more

Journal of Dairy Science > 2014 > 97 > 1 > 72-84

Low-fat Caciotta-type cheeses were manufactured with partially skim milk (fat content of ~0.3%) alone (LFC); with the supplementation of 0.5% (wt/vol) microparticulated whey protein concentrate (MWPC) (LFC-MWPC); with MWPC and exopolysaccharides (EPS)-producing Streptococcus thermophilus ST446 (LFC-MWPC-EPS); and with MWPC, EPS-producing strain ST446, and Lactobacillus plantarum LP and Lactobacillus...

article

The effect of relocation of whole-crop wheat and corn silages on their quality

Y. Chen, Z.G. Weinberg

Journal of Dairy Science > 2014 > 97 > 1 > 406-410

Whole-crop wheat and corn silages in 1.5-L anaerobic jars were exposed to air for 0 up to 48h during their anaerobic storage period to simulate relocation of silages. Ensiling treatments included control (no additives) and either Koffosil T (Koffolk Inc., Petah Tikva, Israel) comprising a mixture of organic acids or Lactobacillus plantarum MTD1 (Ecosyl Products Ltd., Stokesley, UK). In the first set...

article

Molecular epidemiology of recurrent clinical mastitis due to Streptococcus uberis: Evidence of both an environmental source and recurring infection with the same strain

Salem Abureema, Peter Smooker, Jakob Malmo, Margaret Deighton

Journal of Dairy Science > 2014 > 97 > 1 > 285-290

This study was undertaken because clinicians and farmers have observed that a considerable number of cows diagnosed with Streptococcus uberis mastitis have recurrences of mastitis in the same or a different quarter. The study was an attempt to answer whether these recurring cases were due to treatment failure (in which case a search would have begun for a better treatment for Strep. uberis mastitis)...

article

Comparative efficacy of enrofloxacin and tulathromycin for treatment of preweaning respiratory disease in dairy heifers

B.D. Heins, D.V. Nydam, A.R. Woolums, R.D. Berghaus, more

Journal of Dairy Science > 2014 > 97 > 1 > 372-382

Preweaning respiratory disease continues to have a substantial effect on the current and future productivity of dairy replacement animals. Establishing an effective treatment plan for the preweaned calf may have a significant effect on well-being and lifetime productivity by limiting any early development of chronic disease. The primary objective of this study was to examine the efficacy of treatment...

article

Short communication: Aflatoxin M1 in dairy products sold in Şanlıurfa, Turkey

F. Temamogullari, A. Kanici

Journal of Dairy Science > 2014 > 97 > 1 > 162-165

The aim of this study was to detect the presence of aflatoxin M₁ (AFM1) in samples of raw milk (n=38), UHT milk (n=12), white pickled cheese (n=50), and yogurt (n=50) collected from the Şanlıurfa city markets and locally produced dairy products by ELISA. The mean contamination rates were 56.74±40.32, 43.1±23.19, 103.2±29.13, and 55.28±12.68ng/kg, respectively, for raw milk, UHT milk, white pickled...

article

Prediction of fatty acid profiles in cow, ewe, and goat milk by mid-infrared spectrometry

M. Ferrand-Calmels, I. Palhière, M. Brochard, O. Leray, more

Journal of Dairy Science > 2014 > 97 > 1 > 17-35

Mid-infrared (MIR) spectrometry was used to estimate the fatty acid (FA) composition in cow, ewe, and goat milk. The objectives were to compare different statistical approaches with wavelength selection to predict the milk FA composition from MIR spectra, and to develop equations for FA in cow, goat, and ewe milk. In total, a set of 349 cow milk samples, 200 ewe milk samples, and 332 goat milk samples...

article

Microarray-based gene expression profiling of peripheral blood mononuclear cells in dairy cows with experimental hypocalcemia and milk fever

K. Sasaki, N. Yamagishi, K. Kizaki, K. Sasaki, more

Journal of Dairy Science > 2014 > 97 > 1 > 247-258

Although a molecular diagnostic assay using clinically accessible tissue, such as blood, would facilitate evaluation of disease conditions in humans and animals, little information exists on microarray-based gene expression profiling of circulating leukocytes from clinically hypocalcemic cows. Therefore, peripheral blood mononuclear cells from dairy cows with experimentally induced hypocalcemia or...

article

Factors influencing dairy calf and replacement heifer mortality in France

D. Raboisson, E. Maigne, P. Sans, G. Allaire, more

Journal of Dairy Science > 2014 > 97 > 1 > 202-211

Herd-level risk factors for dairy calf and heifer mortality in France were identified by calculating herd-level variables (including mortality risk or rate) using the National Bovine Identification Database (2005 and 2006). Eleven dairy production areas representing different livestock systems were also included. Statistical analyses were based on a probit model (mortality risk or rate=0 or >0)...

article

Decline in mammary translational capacity during intravenous glucose infusion into lactating dairy cows

R.V. Curtis, J.J.M. Kim, D.L. Bajramaj, J. Doelman, more

Journal of Dairy Science > 2014 > 97 > 1 > 430-438

The objective of this study was to determine effects of glucose on milk protein yield and mammary mammalian target of rapamycin (mTOR) activity in dairy cattle in early lactation. Eight multiparous cows at 73±8d in milk were randomly assigned to 2 treatments in a crossover design for two 6-d periods. Treatments were jugular infusion of either saline (Sal) or 896g/d glucose (Glc). All cows were fed...

article

Genetic evaluation of in-line recorded milkability from milking parlors and automatic milking systems

C. Carlström, E. Strandberg, K. Johansson, G. Pettersson, more

Journal of Dairy Science > 2014 > 97 > 1 > 497-506

The overall objective of this study was to assess the use of in-line recorded milkability information from dairy herds with conventional milking parlors (CMP) and from herds with automatic milking systems (AMS) for genetic evaluation. Some genetic parameters were previously studied on AMS data for 2,053 Swedish Holstein (SH) and 1,749 Swedish Red (SR) cows in 19 herds. These data were combined in...

article

Induced hyperketonemia affects the mammary immune response during lipopolysaccharide challenge in dairy cows

M. Zarrin, O. Wellnitz, H.A. van Dorland, R.M. Bruckmaier

Journal of Dairy Science > 2014 > 97 > 1 > 330-339

Metabolic adaptations during negative energy and nutrient balance in dairy cows are thought to cause impaired immune function and hence increased risk of infectious diseases, including mastitis. Characteristic adaptations mostly occurring in early lactation are an elevation of plasma ketone bodies and free fatty acids (nonesterified fatty acids, NEFA) and diminished glucose concentration. The aim...

article

Distribution and identification of culturable airborne microorganisms in a Swiss milk processing facility

Helmut Brandl, Claudia Fricker-Feer, Dominik Ziegler, Jyotshna Mandal, more

Journal of Dairy Science > 2014 > 97 > 1 > 240-246

Airborne communities (mainly bacteria) were sampled and characterized (concentration levels and diversity) at 1 outdoor and 6 indoor sites within a Swiss dairy production facility. Air samples were collected on 2 sampling dates in different seasons, one in February and one in July 2012 using impaction bioaerosol samplers. After cultivation, isolates were identified by mass spectrometry (matrix-assisted...

article

Interpretive Summaries, January 2014

Journal of Dairy Science > 2014 > 97 > 1 > viii-xiv

article

Short communication: Antimicrobial resistance and virulence characterization of methicillin-resistant staphylococci isolates from bovine mastitis cases in Portugal

R. Seixas, J.P. Santos, R. Bexiga, C.L. Vilela, more

Journal of Dairy Science > 2014 > 97 > 1 > 340-344

Methicillin-resistant staphylococci (MRS) have already been reported as mastitis agents. Such bacterial species are a public health concern, and the characterization of their antimicrobial resistance and virulence profile is important to better control their dissemination. The present work evaluated the distribution of methicillin-resistance among 204 staphylococci from clinical (n=50) and subclinical...

article

Prevalence of and factors associated with hock, knee, and neck injuries on dairy cows in freestall housing in Canada

J.C. Zaffino Heyerhoff, S.J. LeBlanc, T.J. DeVries, C.G.R. Nash, more

Journal of Dairy Science > 2014 > 97 > 1 > 173-184

Injuries are a widespread problem in the dairy industry. The objective of this study was to determine the prevalence of and explore the animal-based and environmental factors associated with hock, knee, and neck injuries on dairy cows in freestall housing in Ontario and Alberta, Canada. Freestall dairy farms in the provinces of Ontario (n=40) and Alberta (n=50) were visited for cross-sectional data...

article

Effects of time and sampling location on concentrations of β-hydroxybutyric acid in dairy cows

A. Mahrt, O. Burfeind, W. Heuwieser

Journal of Dairy Science > 2014 > 97 > 1 > 291-298

Two trials were conducted to examine factors potentially influencing the measurement of blood β-hydroxybutyric acid (BHBA) in dairy cows. The objective of the first trial was to study effects of sampling time on BHBA concentration in continuously fed dairy cows. Furthermore, we determined test characteristics of a single BHBA measurement at a random time of the day to diagnose subclinical ketosis...

article

Accuracy and precision of total mixed rations fed on commercial dairy farms

A.D. Sova, S.J. LeBlanc, B.W. McBride, T.J. DeVries

Journal of Dairy Science > 2014 > 97 > 1 > 562-571

Despite the significant time and effort spent formulating total mixed rations (TMR), it is evident that the ration delivered by the producer and that consumed by the cow may not accurately reflect that originally formulated. The objectives of this study were to (1) determine how TMR fed agrees with or differs from TMR formulation (accuracy), (2) determine daily variability in physical and chemical...

article

Endometrial cytology, biopsy, and bacteriology for the diagnosis of subclinical endometritis in grazing dairy cows

L.V. Madoz, M.J. Giuliodori, A.L. Migliorisi, M. Jaureguiberry, more

Journal of Dairy Science > 2014 > 97 > 1 > 195-201

The objectives of this study were to assess the agreement between endometrial cytology and uterine biopsy for the diagnosis of subclinical endometritis (SEND) in grazing dairy cows, the interobserver agreement of the biopsy’s readings, and the bacterial population isolated from the uterus of cows having SEND. In experiment 1, lactating Holstein cows (n=44) 31 to 59d in milk (DIM) at sampling were...

article

The effects of forage particle length and exogenous phytase inclusion on phosphorus digestion and absorption in lactating cows

J.P. Jarrett, J.W. Wilson, P.P. Ray, K.F. Knowlton

Journal of Dairy Science > 2014 > 97 > 1 > 411-418

Accurate estimates of phosphorus (P) availability from feed are needed to allow P requirements to be met with reduced P intake, thus reducing P excretion by livestock. Exogenous phytase supplementation in poultry and swine diets improves bioavailability of P, and limited research suggests that this strategy may have some application in dairy cattle rations. The effects of exogenous phytase and forage...

article

A study based on records taken at time of hoof trimming reveals a strong association between the IQ motif-containing GTPase-activating protein 1 (IQGAP1) gene and sole hemorrhage in Holstein cattle

H.H. Swalve, C. Floren, M. Wensch-Dorendorf, K. Schöpke, more

Journal of Dairy Science > 2014 > 97 > 1 > 507-519

Feet and leg problems have a major effect on the well-being and lifespan of the dairy cow and thus are economically important to the dairy farmer. Apart from approaches using genetic selection for classical traits from conformation scoring, attempts for genetic improvement can be based either on records of individual disease cases or on records of disorder status at time of hoof trimming. In this...

Volume:
97
Year:
2014

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Keywords

DAIRY COW (100)
MILK (27)
MASTITIS (20)
MILK PRODUCTION (19)
DAIRY CATTLE (18)
CALF (17)
MILK YIELD (17)
DAIRY CALF (16)
GENOMIC SELECTION (14)
DAIRY (13)
STAPHYLOCOCCUS AUREUS (13)
COLOSTRUM (12)
FEED EFFICIENCY (11)
CATTLE (10)
CHEESE (10)
FERTILITY (10)
HEAT STRESS (10)
LACTATION (10)
ANIMAL WELFARE (9)
BOVINE (9)
FATTY ACID (9)
LAMENESS (9)
GENETIC CORRELATION (8)
HERITABILITY (8)
IMMUNOGLOBULIN G (8)
MILK COMPOSITION (8)
MILK FAT (8)
PASTURE (8)
TRANSITION PERIOD (8)
BEHAVIOR (7)
CORN SILAGE (7)
FEED INTAKE (7)
FEEDING BEHAVIOR (7)
GENE EXPRESSION (7)
GOAT (7)
GRAZING (7)
HEALTH (7)
INFLAMMATION (7)
METHANE (7)
PROBIOTIC (7)
RISK FACTOR (7)
STARCH (7)
WELFARE (7)
AMINO ACID (6)
CLINICAL MASTITIS (6)
DAIRY GOAT (6)
ENERGY BALANCE (6)
FERMENTED MILK (6)
IMMUNITY (6)
MAMMARY GLAND (6)
ORGANIC (6)
PROGESTERONE (6)
RUMEN (6)
SHEEP (6)
SUBACUTE RUMINAL ACIDOSIS (6)
BIOFILM (5)
BOVINE MASTITIS (5)
CASEIN (5)
CONJUGATED LINOLEIC ACID (5)
DIGESTIBILITY (5)
DRY MATTER INTAKE (5)
EARLY LACTATION (5)
ENERGY (5)
GROWTH (5)
INTRAMAMMARY INFECTION (5)
LACTIC ACID BACTERIA (5)
MANAGEMENT (5)
METABOLISM (5)
PARATUBERCULOSIS (5)
PATHOGEN (5)
PREVALENCE (5)
PROTEIN (5)
RESIDUAL FEED INTAKE (5)
SILAGE (5)
TRANSITION COW (5)
WHEY (5)
BIOHYDROGENATION (4)
BIOMARKER (4)
BULK MILK (4)
CHEESE YIELD (4)
CHROMIUM (4)
CROSSBREEDING (4)
CULTURE (4)
DAIRY FARM (4)
DAIRY HEIFER (4)
ECONOMIC VALUE (4)
ELISA (4)
ENDOMETRITIS (4)
ESSENTIAL AMINO ACID (4)
GENOMIC EVALUATION (4)
GOAT MILK (4)
HOUSING (4)
IMPUTATION (4)
KETOSIS (4)
LIFE CYCLE ASSESSMENT (4)
METABOLIC STATUS (4)
METHIONINE (4)
METRITIS (4)
MILK REPLACER (4)
MYCOBACTERIUM AVIUM SSP. PARATUBERCULOSIS (4)
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INFONA - science communication portal

Journal of Dairy Science

Use of microparticulated whey protein concentrate, exopolysaccharide-producing Streptococcus thermophilus, and adjunct cultures for making low-fat Italian Caciotta-type cheese

The effect of relocation of whole-crop wheat and corn silages on their quality

Molecular epidemiology of recurrent clinical mastitis due to Streptococcus uberis: Evidence of both an environmental source and recurring infection with the same strain

Comparative efficacy of enrofloxacin and tulathromycin for treatment of preweaning respiratory disease in dairy heifers

Short communication: Aflatoxin M1 in dairy products sold in Şanlıurfa, Turkey

Prediction of fatty acid profiles in cow, ewe, and goat milk by mid-infrared spectrometry

Microarray-based gene expression profiling of peripheral blood mononuclear cells in dairy cows with experimental hypocalcemia and milk fever

Factors influencing dairy calf and replacement heifer mortality in France

Decline in mammary translational capacity during intravenous glucose infusion into lactating dairy cows

Genetic evaluation of in-line recorded milkability from milking parlors and automatic milking systems

Induced hyperketonemia affects the mammary immune response during lipopolysaccharide challenge in dairy cows

Distribution and identification of culturable airborne microorganisms in a Swiss milk processing facility

Interpretive Summaries, January 2014

Short communication: Antimicrobial resistance and virulence characterization of methicillin-resistant staphylococci isolates from bovine mastitis cases in Portugal

Prevalence of and factors associated with hock, knee, and neck injuries on dairy cows in freestall housing in Canada

Effects of time and sampling location on concentrations of β-hydroxybutyric acid in dairy cows

Accuracy and precision of total mixed rations fed on commercial dairy farms

Endometrial cytology, biopsy, and bacteriology for the diagnosis of subclinical endometritis in grazing dairy cows

The effects of forage particle length and exogenous phytase inclusion on phosphorus digestion and absorption in lactating cows

A study based on records taken at time of hoof trimming reveals a strong association between the IQ motif-containing GTPase-activating protein 1 (IQGAP1) gene and sole hemorrhage in Holstein cattle

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