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Journal of Dairy Research

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https://www.readbyqxmd.com/read/29969084/detection-of-tetracycline-and-other-antimicrobial-residues-in-milk-from-cows-with-clinical-mastitis-treated-by-combination-therapy
#1
Aleksandar Siljanoski, Renata Ciglarič, Tomaž Pezdir, Petra R Lainšček, Jožica Dolenc, Jože Starič, Ksenija Šinigoj-Gačnik
The purpose of this study was to determine tetracycline and other antimicrobial residues in milk from dairy cows treated for clinical mastitis. Data on cow health and drugs used were obtained from the farm veterinarians. A milk sample from each affected udder quarter of each cow was taken for bacterial identification before treatment. All 35 cows in the study were treated with an intramammary product containing tetracycline, neomycin, bacitracin, and prednisolone (tetracycline injector) and also simultaneously with other drugs via the intramammary or parenteral route...
July 3, 2018: Journal of Dairy Research
https://www.readbyqxmd.com/read/29961439/screening-of-cell-surface-properties-of-potential-probiotic-lactobacilli-isolated-from-human-milk
#2
Namita Rokana, Brij Pal Singh, Nishchal Thakur, Chetan Sharma, Rohini Devidas Gulhane, Harsh Panwar
Evaluation of eleven candidate probiotic Lactobacillus strains isolated from human milk showed that some of the strains were well endowed with desirable cell surface and attachment attributes. The cell surface properties (hydrophobicity, auto-aggregation, attachment to collagen and HT-29 monolayer) of probiotic Lactobacillus species of human milk origin were compared with reference probiotic/ non-probiotic species and pathogenic strains. The bacterial adhesion to hydrocarbons (BATH) was determined using three aliphatic (Chloroform, n-Hexane and n-Octane) and two aromatic (Toluene and Xylene) solvents...
July 2, 2018: Journal of Dairy Research
https://www.readbyqxmd.com/read/29941059/peroxisome-proliferator-activated-receptor-%C3%AE-%C3%AE-does-not-regulate-glucose-uptake-and-lactose-synthesis-in-bovine-mammary-epithelial-cells-cultivated-in-vitro
#3
Jayant Lohakare, Johan S Osorio, Massimo Bionaz
The hypothesis of the study was that inhibition of PPARβ/δ increases glucose uptake and lactose synthesis in bovine mammary epithelial cells by reducing the expression of the glucose transporter mRNA destabiliser calreticulin. Three experiments were conducted to test the hypothesis using immortalised bovine mammary alveolar (MACT) and primary bovine mammary (PBMC) cells. In Experiment 1, the most effective dose to inhibit PPARβ/δ activity among two synthetic antagonists (GSK-3787 and PT-s58) was assessed using a gene reporter assay...
June 26, 2018: Journal of Dairy Research
https://www.readbyqxmd.com/read/29941054/effects-of-new-n-3-fatty-acid-sources-on-milk-fatty-acid-profile-and-milk-fat-properties-in-dairy-cows
#4
Elise Vanbergue, Jean-Louis Peyraud, Catherine Hurtaud
Feeding livestock with n-3 fatty acid (FA) sources (linseed, for example) is a common strategy to improve lipid quality of meat and milk products. However, in monogastric animals, linseed tegument decreases digestibility and alphalinolenic acid (ALA) uptake, while the whole linseed is well used by ruminants. In a context of increasing sustainability of feeding systems, providing monogastric animals and ruminants with linseed products adapted to their digestive systems is an important issue. This research paper addresses the hypotheses: (i) sieved extruded linseed (SEL) specific for ruminants is as or more effective than standard extruded linseed (ii) microalgae DHA Gold® is an interesting source of docosahexaenoic acid (DHA) in feedstuff and (iii) the effects of SEL and microalgae on milk characteristics are complementary and additive...
June 26, 2018: Journal of Dairy Research
https://www.readbyqxmd.com/read/29925444/association-of-subclinical-mastitis-prevalence-with-sheep-breeds-in-greece
#5
Natalia Gc Vasileiou, Dimitris A Gougoulis, Valentina Riggio, Katerina S Ioannidi, Dimitris C Chatzopoulos, Vasia S Mavrogianni, Efthymia Petinaki, George C Fthenakis
The objective of the research described in this Research Communication was to describe potential associations of subclinical mastitis with sheep breeds in Greece. A countrywide survey (2198 ewes in 111 farms) was performed. Prevalence of subclinical mastitis was 0·260. Results did not indicate any difference in the prevalence of subclinical mastitis between farms with pure-bred and farms with cross-bred animals, nor any difference in prevalence between farms with Greek pure-bred animals and farms with imported pure-bred animals...
June 21, 2018: Journal of Dairy Research
https://www.readbyqxmd.com/read/29923468/technological-attempts-at-producing-cheese-from-donkey-milk
#6
Michele Faccia, Giuseppe Gambacorta, Giovanni Martemucci, Giuseppe Natrella, Angela G D'Alessandro
The work described in this Research Communication addressed the hypothesis that it is possible to produce cheese from donkey milk by appropriate adjusting of the cheesemaking parameters. A series of coagulation trials were performed on donkey milk, alone or fortified with goat milk (85/15 and 70/30, v/v), using calf rennet under different technological conditions. The parameters that changed were pH and concentration of soluble calcium, amount of rennet added and temperature of coagulation. Donkey milk gave rise to sufficiently firm curd only at 'extreme' technological conditions and, as expected, addition of goat milk improved coagulation...
June 20, 2018: Journal of Dairy Research
https://www.readbyqxmd.com/read/29909814/lack-of-evidence-of-ige-allergic-sensitisation-from-working-with-lactic-acid-bacteria-in-the-dairy-foods-industry
#7
Coralie Barrera, Gabriel Reboux, Audrey Laboissière, Laurence Millon, Anne Oppliger
This research communication aimed to evaluate the level of immunoglobulin E from lactic acid bacteria (LAB) that are used in dairy industries. Previous studies have demonstrated that workers report symptoms of irritation and are frequently IgG-sensitised to LAB. Workers (n = 44) from a probiotic production unity and the control lab were seen by a medical practitioner and responded to an occupational questionnaire. Specific IgE by the DELFIA® technique against 6 strains of LAB were measured on 44 exposed workers and 31 controls sera...
June 18, 2018: Journal of Dairy Research
https://www.readbyqxmd.com/read/29909793/early-weaning-and-high-feeding-level-in-post-weaning-period-did-not-impact-milk-production-in-alpine-dairy-goats
#8
Clémence Panzuti, Gaëlle Mandrile, Christine Duvaux-Ponter, Frédéric Dessauge
The experiment reported in this Research Communication aimed to determine the combined effects of early weaning and post-weaning feeding level on growth, reproductive parameters and milk yield in Alpine goats. Sixty-four Alpine goat kids were weaned abruptly at either 12·2 (±1·40) kg (40 d of age, E) or 17·7 (±2·30) kg (60 d of age, No). After weaning, E and No goats were subjected to 2 feeding strategies (n = 16): ad libitum concentrate until 130 d of age and then 620 g DM/d/goat until 200 d of age (EC and NoC) or ad libitum concentrate until 200 d of age (EAL and NoAL)...
June 18, 2018: Journal of Dairy Research
https://www.readbyqxmd.com/read/29785920/effects-of-herd-and-physiological-status-on-variation-of-16-immunological-and-inflammatory-parameters-in-dairy-cows-during-drying-off-and-the-transition-period
#9
Alfonso Zecconi, Francesca Albonico, Maria Elena Gelain, Renata Piccinini, Micaela Cipolla, Michele Mortarino
During drying off and transition period, cows are subject to changes in endocrine status, metabolic stressors and altered immune functions, which could lead to an increased risk of disease. To expand our knowledge on the immune/inflammatory status and to identify markers to define cow status during this interval, the pattern of 9 different cellular parameters, 5 cytokines, 2 enzymes and 3 cellular ratios in blood samples were assessed in 15 primiparous cows belonging to three different dairy herds in Lombardy...
May 2018: Journal of Dairy Research
https://www.readbyqxmd.com/read/29785919/genomic-selection-in-dairy-cattle-simulated-populations
#10
Leonardo de Oliveira Seno, Diego Gomes Freire Guidolin, Rusbel Raul Aspilcueta-Borquis, Guilherme Batista do Nascimento, Thiago Bruno Ribeiro da Silva, Henrique Nunes de Oliveira, Danísio Prado Munari
Genomic selection is arguably the most promising tool for improving genetic gain in domestic animals to emerge in the last few decades, but is an expensive process. The aim of this study was to evaluate the economic impact related to the implementation of genomic selection in a simulated dairy cattle population. The software QMSim was used to simulate genomic and phenotypic data. The simulated genome contained 30 chromosomes with 100 cm each, 1666 SNPs markers equally spread and 266 QTLs randomly designated for each chromosome...
May 2018: Journal of Dairy Research
https://www.readbyqxmd.com/read/29785918/proteomic-analysis-of-the-effects-of-lutein-on-mammary-gland-metabolism-in-dairy-cows
#11
Caihong Wang, Chong Wang, Jianxin Liu, Hongyun Liu
The aim of the research reported in this Research Communication was to identify differentially expressed proteins in dairy cows with normal and lutein diet and to elucidate the mechanisms of lutein-induced effects on bovine mammary gland metabolism using a comparative proteomic approach. Thirty-three differentially expressed proteins were identified from mammary gland of control diet-fed and lutein diet-fed dairy cows. Among these proteins, 15 were upregulated and 18 were downregulated in the lutein group. Functional analysis of the differentially expressed proteins showed that increased blood flow, depressed glycolysis, enhanced lactose anabolism, decreased fatty acid oxidation and up-regulated beta lactoglobulin expression were connected with lutein addition...
May 2018: Journal of Dairy Research
https://www.readbyqxmd.com/read/29785917/effect-of-season-and-breed-on-physiological-and-blood-parameters-in-buffaloes
#12
Liu Shenhe, Li Jun, Li Zipeng, Deng Tingxian, Zia Ur Rehman, Zhou Zichao, Yang Liguo
In this Research Communication we describe the effect of temperature and humidity index (THI) on various physiological traits, the plasma heat shock protein 70 (HSP70), heat shock protein 90 (HSP90) and cortisol levels and other blood parameters in crossbred buffalo (Nili-Ravi × Murrah) and Mediterranean buffalo to compare their tolerance to heat stress. As expected, crossbred buffalo had a significantly higher rectal temperature (RT), body surface temperature (BT), respiratory rate (RR), HSP70 and HSP90 levels in summer compared to spring and winter...
May 2018: Journal of Dairy Research
https://www.readbyqxmd.com/read/29785916/focusing-on-fatty-acid-profile-in-milk-from-different-species-after-in-vitro-digestion
#13
Antonella Santillo, Lucia Figliola, Maria G Ciliberti, Mariangela Caroprese, Rosaria Marino, Marzia Albenzio
We report the fatty acid profile of raw milk and of the corresponding digested milk from different sources (human milk, formula milk and donkey, bovine, ovine and caprine milk) to gain information on the nutritional quality of different milk sources in infant nutrition.Short chain fatty acids (SC-FA) were higher in bovine and caprine milk, intermediate in ovine and donkey and lower in human and formula milk. Medium chain fatty acids (MC-FA) showed the highest values for bovine and caprine milk and the lowest for donkey and formula milk, whereas long chain fatty acids (LC-FA) were the highest in donkey and formula milk and intermediate in human milk...
May 2018: Journal of Dairy Research
https://www.readbyqxmd.com/read/29785915/the-effects-of-a-synthetic-analogue-of-the-bovine-appeasing-pheromone-on-milk-yield-and-composition-in-valdostana-dairy-cows-during-the-move-from-winter-housing-to-confined-lowland-pastures
#14
Maria Cristina Osella, Alessandro Cozzi, Claudio Spegis, Germano Turille, Andrea Barmaz, Céline Lafont Lecuelle, Eva Teruel, Cécile Bienboire-Frosini, Camille Chabaud, Laurent Bougrat, Patrick Pageat
This Research Communication describes the effects of a synthetic analogue of the Bovine Appeasing Pheromone (BAP) on milk parameters in Valdostana dairy cows during the first turning out from tie-stalls to confined lowland pastures around the farms. Thirty healthy lactating Valdostana cows were enroled in the study and randomly divided into 2 groups: experimental group (EG, n = 15) and control group (CG, n = 15). The two groups were separately housed in the same farm and managed outside in two different pens...
May 2018: Journal of Dairy Research
https://www.readbyqxmd.com/read/29785914/fermented-camel-milk-prevents-carbon-tetrachloride-induced-acute-injury-in-kidney-of-mice
#15
Houda Hamed, Manel Gargouri, Salha Boulila, Fatma Chaari, Ferdaws Ghrab, Rim Kallel, Zied Ghannoudi, Tahia Boudawara, Semia Chaabouni, Abdelfattah El Feki, Ahmed Gargouri
Fermented milk is known to possess potent antioxidant activity. The present study was undertaken to assess the preventive effect of fermented camel milk (FCM) prepared using lactococcus lactis subsp. cremoris against CCl4 induced kidney damage in mice. Nephrotoxicity was induced in mice by a single dose of CCl4 (10 ml/kg 0·3% olive oil, ip). Female mice were pretreated daily with FCM for 15 d. Renal damage was associated with an increase in oxidative stress parameters (lipid peroxidation, protein carbonyl and changes in antioxidant enzyme activities and non-enzymatic antioxidant) and nephropathology markers...
May 2018: Journal of Dairy Research
https://www.readbyqxmd.com/read/29785913/editorial-watering-holes
#16
Christopher H Knight
No abstract text is available yet for this article.
May 2018: Journal of Dairy Research
https://www.readbyqxmd.com/read/29785912/para-%C3%AE%C2%BA-casein-during-the-ripening-and-storage-of-low-ph-high-moisture-feta-cheese
#17
Voula Alexandraki, Golfo Moatsou
The hypothesis of this research paper was that the physicochemical conditions in a low-pH, high-moisture white brined cheese such as Feta would make para-κ-casein vulnerable to residual chymosin activity during ripening and storage. It was important to address this hypothesis, since cheese para-κ-casein could theoretically be used for the assessment of the origin of cheese milk by means of various analytical methods. Feta cheese was manufactured from sheep milk and from four different mixtures of sheep and goat milk in triplicate...
May 2018: Journal of Dairy Research
https://www.readbyqxmd.com/read/29785911/characterisation-of-mango-flavoured-curd-powder-developed-using-spray-drying-technique
#18
Akash Basu, Kathirvelpillai A Athmaselvi
This research communication describes the production of flavoured (Mango) curd powder. The mango flavoured curd powder was developed in two different temperatures (150 °C and 170 °C) in various ratios with one control curd sample. The final powder was obtained in high quality which can be used directly or as an ingredient. The percentage of lactic acid in the developed powder showed the healthy amount of probiotic present in it. The physical properties and probiotic growth of the mango flavoured curd powder, developed by spray drying technique, have been evaluated in this article...
May 2018: Journal of Dairy Research
https://www.readbyqxmd.com/read/29785910/a-large-scale-study-of-indicators-of-sub-clinical-mastitis-in-dairy-cattle-by-attribute-weighting-analysis-of-milk-composition-features-highlighting-the-predictive-power-of-lactose-and-electrical-conductivity
#19
Esmaeil Ebrahimie, Faezeh Ebrahimi, Mansour Ebrahimi, Sarah Tomlinson, Kiro R Petrovski
Sub-clinical mastitis (SCM) affects milk composition. In this study, we hypothesise that large-scale mining of milk composition features by pattern recognition models can identify the best predictors of SCM within the milk composition features. To this end, using data mining algorithms, we conducted a large-scale and longitudinal study to evaluate the ability of various milk production parameters as indicators of SCM. SCM is the most prevalent disease of dairy cattle, causing substantial economic loss for the dairy industry...
May 2018: Journal of Dairy Research
https://www.readbyqxmd.com/read/29785909/udder-skin-surface-temperature-variation-pre-and-post-milking-in-dairy-cows-as-determined-by-infrared-thermography
#20
Chunhe Yang, Gan Li, Xiaojun Zhang, Xianhong Gu
The objectives of the research reported in this Research Communication were to compare the variation of hind quarter skin surface temperature pre- and post- milking in dairy cows and to determine the optimal time to capture images by infrared thermography for improving the sensitivity and specificity of mastitis detection in dairy cows. Hind quarter infrared images of 102 Holstein dairy cows were captured from the caudal view by an infrared camera pre-milking and post-milking. The udder skin surface temperature was measured with the help of the image processing software...
May 2018: Journal of Dairy Research
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