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Cow milk tolerance

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https://www.readbyqxmd.com/read/27907192/adaptive-test-schemes-for-control-of-paratuberculosis-in-dairy-cows
#1
Carsten Kirkeby, Kaare Græsbøll, Søren Saxmose Nielsen, Lasse Engbo Christiansen, Nils Toft, Tariq Halasa
Paratuberculosis is a chronic infection that in dairy cattle causes reduced milk yield, weight loss, and ultimately fatal diarrhea. Subclinical animals can excrete bacteria (Mycobacterium avium ssp. paratuberculosis, MAP) in feces and infect other animals. Farmers identify the infectious animals through a variety of test-strategies, but are challenged by the lack of perfect tests. Frequent testing increases the sensitivity but the costs of testing are a cause of concern for farmers. Here, we used a herd simulation model using milk ELISA tests to evaluate the epidemiological and economic consequences of continuously adapting the sampling interval in response to the estimated true prevalence in the herd...
2016: PloS One
https://www.readbyqxmd.com/read/27889169/characterization-of-biocide-tolerant-bacteria-isolated-from-cheese-and-dairy-small-medium-enterprises
#2
Ma Luisa Fernández Márquez, Ma José Grande Burgos, Ma Carmen López Aguayo, Rubén Pérez Pulido, Antonio Gálvez, Rosario Lucas
A collection of 120 bacterial isolates from small medium enterprises involved in the production of cow milk and the manufacture of goat cheese were screened for sensitivity to biocides benzalkonium chloride (BC), cetrimide (CT), hexadecylpyridinium chloride (HDP), triclosan (TC), hexachlorophene (CF) and poly-(hexamethylen guanidinium) hydrochloride (PHMG). Nineteen isolates were selected according to biocide tolerance and identified by 16S rDNA sequencing as Lactococcus sp. (6) Enterococcus sp. (1), Lactobacillus sp...
April 2017: Food Microbiology
https://www.readbyqxmd.com/read/27889127/a-comparison-of-semen-diluents-on-the-in-vitro-and-in-vivo-fertility-of-liquid-bull-semen
#3
Edel M Murphy, Craig Murphy, Ciara O'Meara, Gemma Dunne, Bernard Eivers, Patrick Lonergan, Sean Fair
The aim of this study was to assess the effect of semen diluent on calving rate (CR) following artificial insemination with liquid bull semen stored for up to 3 d postcollection. In experiment 1, the effect of storing liquid semen maintained at a constant ambient temperature in 1 of 7 different diluents [Caprogen (homemade), OptiXcell, BioXcell, BullXcell, INRA96, NutriXcell, or AndroMed (all commercially available)] on total and progressive motility was assessed on d 0, 1, 2, and 3 postcollection. In experiment 2, the field fertility of liquid semen diluted in Caprogen, BioXcell, or INRA96 and inseminated on d 1, 2, or 3 postcollection was assessed in comparison to frozen-thawed semen (total of n = 19,126 inseminations)...
November 23, 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/27853711/aflatoxin-m1-levels-in-raw-milk-pasteurised-milk-and-infant-formula
#4
Sharaf S Omar
The incidence of contamination of aflatoxin M1 (AFM1) in milk samples collected from the Jordanian market was investigated by using the competitive enzyme linked immunosorbent assay (ELISA) technique. A total of 175 samples were collected during 2014-2015. All tested samples were contaminated with various levels of AFM1 ranging from 9.71 to 288.68 ng/kg. The concentration of AFM1 in 66% of fresh milk samples was higher than the maximum tolerance limit accepted by the European Union (50 ng/kg) and 23% higher than the maximum tolerance limit accepted by the US (500 ng/kg)...
June 3, 2016: Italian Journal of Food Safety
https://www.readbyqxmd.com/read/27849231/cow-s-milk-allergy-evaluating-tolerance-through-skin-prick-test
#5
Flavia Valença de Oliveira Neves, Cleonir de Moraes Lui Beck, Andrea Keiko Fujinami Gushken, Glauce Hiromi Yonamine, Ana Paula Beltran Moschione Castro, Mayra de Barros Dorna, Cristiane de Jesus Nunes Dos Santos, Antonio Carlos Pastorino
Objective: To evaluate the wheal diameter in allergy skin-prick tests (SPT) with cow's milk extract (CM) comparing tolerant and persistent patients. Method: A retrospective cohort study involving database analysis of children with diagnosis of cow's milk protein allergy (CMPA) mediated by immunoglobulin E in a specialized outpatient clinic that regularly performed SPT between January 2000 and July 2015. Patients were allocated into two groups: tolerant or persistent...
September 2016: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/27843068/cow-s-milk-protein-is-often-tolerated-by-children-with-oat-induced-fpies
#6
Madhavi Kapoor, J Andrew Bird
No abstract text is available yet for this article.
November 11, 2016: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/27799957/prospective-evaluation-of-testing-with-baked-milk-to-predict-safe-ingestion-of-baked-milk-in-unheated-milk-allergic-children
#7
Allison Kwan, Maria Asper, Sasson Lavi, Elana Lavine, David Hummel, Julia E Upton
BACKGROUND: Cow's milk allergy is one of the most common food allergies affecting young children. A subset of milk-allergic individuals can eat baked milk without allergic symptoms which is beneficial in terms of prognostication and liberalization of the diet. A retrospective study suggested that skin prick testing (SPT) with a baked milk (muffin) slurry may provide a sensitive means of predicting the outcome of a medically supervised baked milk oral food challenge. We evaluated the predictive value of SPT with baked milk to identify unheated milk-allergic children who are able to safely eat baked milk...
2016: Allergy, Asthma, and Clinical Immunology
https://www.readbyqxmd.com/read/27799804/relative-cost-effectiveness-of-using-an-extensively-hydrolyzed-casein-formula-in-managing-infants-with-cow-s-milk-allergy-in-brazil
#8
Julian F Guest, Ariana C Yang, Jane Oba, Maraci Rodrigues, Rosane Caetano, Lilian Polster
OBJECTIVE: To estimate the cost-effectiveness of three alternative dietetic strategies for cow's milk allergy in Brazil: 1) using an extensively hydrolyzed casein formula (eHCF; Nutramigen) as a first-line formula, but switching to an amino acid formula (AAF) if infants remain symptomatic; 2) using an AAF as a first-line formula and then switching to an eHCF after 4 weeks once infants are symptom-free, but switching back to an AAF if infants become symptomatic; and 3) using an AAF as a first-line formula and keeping all infants on that formula...
2016: ClinicoEconomics and Outcomes Research: CEOR
https://www.readbyqxmd.com/read/27763871/induction-of-tolerance-by-oral-immunotherapy-in-patients-with-cow-s-milk-allergy
#9
M Ebrahimi, M Gharagozlou, A Khalili, K Magaji Hamid, G Azizi, M Movahedi
No abstract text is available yet for this article.
2016: Journal of Investigational Allergology & Clinical Immunology
https://www.readbyqxmd.com/read/27733914/basophil-activation-test-in-oral-desensitization-to-cow-s-milk-allergy
#10
Salvatore Chirumbolo
The recent paper by Nucera et al., showed that the basophil activation test (BAT) in flow cytometry is able to monitor an acquired tolerance induced by a desensitization treatment in food allergy. The paper by Nucera et al. reported two standpoints in the CD63 response to food allergy and OAT and their large difference in CD63 response before and after suggests for the optimal performance of a CD123/HLADR/CD63 BAT in oral food allergy immunotherapy.
October 2016: United European Gastroenterology Journal
https://www.readbyqxmd.com/read/27682591/genomic-selection-improves-heat-tolerance-in-dairy-cattle
#11
J B Garner, M L Douglas, S R O Williams, W J Wales, L C Marett, T T T Nguyen, C M Reich, B J Hayes
Dairy products are a key source of valuable proteins and fats for many millions of people worldwide. Dairy cattle are highly susceptible to heat-stress induced decline in milk production, and as the frequency and duration of heat-stress events increases, the long term security of nutrition from dairy products is threatened. Identification of dairy cattle more tolerant of heat stress conditions would be an important progression towards breeding better adapted dairy herds to future climates. Breeding for heat tolerance could be accelerated with genomic selection, using genome wide DNA markers that predict tolerance to heat stress...
September 29, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27638262/palmitic-acid-feeding-increases-ceramide-supply-in-association-with-increased-milk-yield-circulating-nonesterified-fatty-acids-and-adipose-tissue-responsiveness-to-a-glucose-challenge
#12
J E Rico, A T Mathews, J Lovett, N J Haughey, J W McFadden
Reduced insulin action is a key adaptation that facilitates glucose partitioning to the mammary gland for milk synthesis and enhances adipose tissue lipolysis during early lactation. The progressive recovery of insulin sensitivity as cows advance toward late lactation is accompanied by reductions in circulating nonesterified fatty acids (NEFA) and milk yield. Because palmitic acid can promote insulin resistance in monogastrics through sphingolipid ceramide-dependent mechanisms, palmitic acid (C16:0) feeding may enhance milk production by restoring homeorhetic responses...
September 13, 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/27638259/increasing-palmitic-acid-intake-enhances-milk-production-and-prevents-glucose-stimulated-fatty-acid-disappearance-without-modifying-systemic-glucose-tolerance-in-mid-lactation-dairy-cows
#13
A T Mathews, J E Rico, N T Sprenkle, A L Lock, J W McFadden
Feeding saturated fatty acids may enhance milk yield in part by decreasing insulin sensitivity and shifting glucose utilization toward the mammary gland. Our objective was to evaluate the effects of palmitic acid (C16:0) on milk production and insulin sensitivity in cows. Twenty multiparous mid-lactation Holstein cows were enrolled in a study consisting of a 5-d covariate, 49-d treatment, and 14-d posttreatment period. All cows received a common sorghum silage-based diet and were randomly assigned to a diet containing no supplemental fat (control; n = 10; 138 ± 45 d in milk) or C16:0 at 4% of ration DM (PALM; 98% C16:0; n = 10; 136 ± 44 d in milk)...
September 13, 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/27568041/development-of-insulin-resistance-in-dairy-cows-by-150-days-of-lactation-does-not-alter-oocyte-quality-in-smaller-follicles
#14
L H Oliveira, A B Nascimento, P L J Monteiro, M M Guardieiro, M C Wiltbank, R Sartori
The objective of this study was to test the hypothesis that high-producing dairy cows become increasingly resistant to insulin throughout lactation and that, consequently, oocyte quality is compromised. We used Holstein cows at 50 (51.5 ± 3.7; n = 30), 100 (102.3 ± 9.4; n = 30), and 150 (154.5 ± 18.9; n = 30) days in milk (DIM). We measured circulating insulin and glucose and performed a glucose tolerance test (GTT) after 5 h of fasting. To evaluate oocyte quality, we performed ovum pickup on the day before the GTT (581 oocytes)...
August 24, 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/27545065/humoral-and-cellular-responses-to-casein-in-patients-with-food-protein-induced-enterocolitis-to-cow-s-milk
#15
Jean Christoph Caubet, Ramon Bencharitiwong, Andrew Ross, Hugh A Sampson, M Cecilia Berin, Anna Nowak-Węgrzyn
BACKGROUND: Food protein-induced enterocolitis syndrome (FPIES) is a non-IgE-mediated food allergy manifesting within 1 to 4 hours of food ingestion with repetitive emesis and lethargy. OBJECTIVE: We sought to characterize immune responses to casein in children with FPIES caused by cow's milk (CM). METHODS: Total IgE and IgM, CM-specific IgG, and casein-specific IgE, IgG, IgG4, and IgM levels, as well as immunoglobulin free light chains, were measured in both patients with active and those with resolved CM-FPIES...
July 15, 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27532229/genetics-of-heat-tolerance-for-milk-yield-and-quality-in-holsteins
#16
M L Santana, A B Bignardi, R J Pereira, G Stefani, L El Faro
Tropical and sub-tropical climates are characterized by high temperature and humidity, during at least part of the year. Consequently, heat stress is common in Holstein cattle and productive and reproductive losses are frequent. Our objectives were as follows: (1) to quantify losses in production and quality of milk due to heat stress; (2) to estimate genetic correlations within and between milk yield (MY) and milk quality traits; and (3) to evaluate the trends of genetic components of tolerance to heat stress in multiple lactations of Brazilian Holstein cows...
August 17, 2016: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/27525046/epigenetic-features-of-foxp3-in-children-with-cow-s-milk-allergy
#17
Lorella Paparo, Rita Nocerino, Linda Cosenza, Rosita Aitoro, Valeria D'Argenio, Valentina Del Monaco, Carmen Di Scala, Antonio Amoroso, Margherita Di Costanzo, Francesco Salvatore, Roberto Berni Canani
BACKGROUND: DNA methylation of the Th1 and Th2 cytokine genes is altered during cow's milk allergy (CMA). Forkhead box transcription factor 3 (FoxP3) is essential for the development and function of regulatory T cells (Tregs) and is involved in oral tolerance acquisition. We assessed whether tolerance acquisition in children with IgE-mediated CMA is associated with DNA demethylation of the Treg-specific demethylated region (TSDR) of FoxP3. RESULTS: Forty children (aged 3-18 months) were enrolled: 10 children with active IgE-mediated CMA (group 1), 10 children who outgrew CMA after dietary treatment with an extensively hydrolyzed casein formula containing the probiotic Lactobacillus rhamnosus GG (group 2), 10 children who outgrew CMA after treatment with other formulas (group 3), and 10 healthy controls (group 4)...
2016: Clinical Epigenetics
https://www.readbyqxmd.com/read/27522426/effect-of-plane-of-milk-replacer-intake-and-age-on-glucose-and-insulin-kinetics-and-abomasal-emptying-in-female-holstein-friesian-dairy-calves-fed-twice-daily
#18
J A R MacPherson, H Berends, L N Leal, J P Cant, J Martín-Tereso, M A Steele
The objective of this study was to investigate how preweaning plane of milk replacer intake and age can affect insulin and glucose kinetics as well as abomasal emptying rate in dairy calves fed twice a day. A total of 12 female Holstein Friesian calves were blocked by cow parity, paired by colostrum origin, and were randomly assigned to a high plane of milk replacer intake (8 L/d, 1.2kg of milk replacer/d; n=6) or a low plane of nutrition (4 L/d, 0.6kg of milk replacer/d; n=6). All calves received 4 L of colostrum over 2 meals (1 and 6h after birth) and were then directly transferred to their assigned feeding plans until they were stepped-down from milk by 50% during wk 7 and weaned on wk 8...
October 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/27522419/a-study-to-examine-the-relationship-between-metritis-severity-and-depletion-of-oxytetracycline-in-plasma-and-milk-after-intrauterine-infusion
#19
P J Gorden, J A Ydstie, M D Kleinhenz, L W Wulf, R Gehring, C J Lee, C Wang, J F Coetzee
Metritis is a frequent problem in postpartum dairy cows. Intrauterine therapy with the antimicrobial oxytetracycline (OTC) is often used, although this therapy has not been shown to be superior to systemic therapy. The objectives of this study were to (1) determine the plasma and milk concentrations of OTC following intrauterine infusion in postpartum dairy cows with varying degrees of metritis severity; (2) determine the depletion time of OTC in an attempt to provide veterinarians withdrawal guidelines, should they use this therapy; and (3) correlate metritis severity scores with OTC concentrations in plasma and milk...
October 2016: Journal of Dairy Science
https://www.readbyqxmd.com/read/27470650/kinetics-of-in-vitro-response-to-%C3%AE-lactoglobulin-in-children-allergic-to-and-tolerant-of-cow-s-milk-protein
#20
L Chini, V Pacciani, S Corrente, E Monteferrario, M L Romiti, V Moschese, F Angelini
No abstract text is available yet for this article.
2016: Journal of Investigational Allergology & Clinical Immunology
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