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Cow milk protein

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https://www.readbyqxmd.com/read/28318590/supplementation-with-rumen-protected-methionine-or-choline-during-the-transition-period-influences-whole-blood-immune-response-in-periparturient-dairy-cows
#1
M Vailati-Riboni, Z Zhou, C B Jacometo, A Minuti, E Trevisi, D N Luchini, J J Loor
Methionine, together with Lys, is the most limiting AA for milk production in dairy cows. Besides its crucial role in milk production, Met and its derivate metabolites (e.g., glutathione, taurine, polyamines) are well-known immunonutrients in nonruminants, helping support and boost immune function and activity. In the present study, the effects of Met or choline, as its precursor, were investigated using an ex vivo whole blood challenge. The study involved 33 multiparous Holstein cows (from a larger cohort with a factorial arrangement of treatments) assigned from d -21 to +30 relative to parturition to a basal control (CON) diet, CON plus rumen-protected Met (MET, Smartamine M, Adisseo NA, Alpharetta, GA) at a rate of 0...
March 16, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28318583/effects-of-feeding-hull-less-barley-on-production-performance-milk-fatty-acid-composition-and-nutrient-digestibility-of-lactating-dairy-cows
#2
Y Yang, G Ferreira, C L Teets, B A Corl, W E Thomason, C A Griffey
The objectives of this study were to evaluate production performance, milk fatty acid composition, and nutrient digestibility in high-producing dairy cows consuming diets containing corn and hull-less barley (cultivar Amaze 10) in different proportions as the grain source. Eight primiparous and 16 multiparous Holstein cows were assigned to 1 of 4 diets in a replicated 4 × 4 Latin square design with 21-d periods. Cows were fed once daily (1200 h) by means of a Calan gate system (American Calan Inc., Northwood, NH)...
March 16, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28318578/relationships-between-body-condition-score-change-prior-mid-lactation-phenotypic-residual-feed-intake-and-hyperketonemia-onset-in-transition-dairy-cows
#3
Francesca M Rathbun, Ryan S Pralle, Sandra J Bertics, Louis E Armentano, K Cho, C Do, Kent A Weigel, Heather M White
Extensive efforts have been made to identify more feed-efficient dairy cows, yet it is unclear how selection for feed efficiency will influence metabolic health. The objectives of this research were to determine the relationships between residual feed intake (RFI), a measure of feed efficiency, body condition score (BCS) change, and hyperketonemia (HYK) incidence. Blood and milk samples were collected twice weekly from cows 5 to 18 d postcalving for a total of 4 samples. Hyperketonemia was diagnosed at a blood β-hydroxybutyrate (BHB) ≥1...
March 16, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28318575/heritabilities-of-measured-and-mid-infrared-predicted-milk-fat-globule-size-milk-fat-and-protein-percentages-and-their-genetic-correlations
#4
A Fleming, F S Schenkel, A Koeck, F Malchiodi, R A Ali, M Corredig, B Mallard, M Sargolzaei, F Miglior
The objective of this study was to estimate the heritability of milk fat globule (MFG) size and mid-infrared (MIR) predicted MFG size in Holstein cattle. The genetic correlations between measured and predicted MFG size with milk fat and protein percentage were also investigated. Average MFG size was measured in 1,583 milk samples taken from 254 Holstein cows from 29 herds across Canada. Size was expressed as volume moment mean (D[4,3]) and surface moment mean (D[3,2]). Analyzed milk samples also had average MFG size predicted from their MIR spectral records...
March 16, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28318190/successful-administration-of-measles-rubella-mumps-vaccine-by-graded-challenge-in-a-case-with-anaphylaxis-after-prior-vaccination
#5
Tuba Tuncel, Ozlem Sancakli, Ece Ozdogru
Egg allergy is one of the most common food allergies during childhood along with cow's milk allergy. The measles-mumpsrubella (MMR) vaccine is included in the pediatric immunization schedule and contains egg protein. The currently accepted opinion is that the MMR vaccination should be done in a single dose under medical observation in patients with egg allergy. Although it is reported that the MMR vaccine is safe for that patients, there are some patients who developed anaphylaxis. Generally, the development of anaphylaxis after the previous vaccination is reported as a contraindication...
April 1, 2017: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/28318108/neonatal-mono-colonization-of-germ-free-mice-with-lactobacillus-casei-enhances-casein-immunogenicity-after-oral-sensitization-to-cow-s-milk
#6
Matieny Aicha Maiga, Stéphanie Morin, Hervé Bernard, Sylvie Rabot, Karine Adel -Patient, Stéphane Hazebrouck
SCOPE: Food allergy is an increasing global health problem and perinatal administration of probiotic bacteria is currently under investigation in order to prevent the development of allergic diseases. Here, we investigated the impact of neonatal mono-colonization of mice with Lactobacillus casei BL23 on an oral sensitization to cow's milk. METHODS AND RESULTS: Mono-colonized (LC) mice were obtained by inoculating L. casei to germ-free (GF) parents. Nine-week-old GF, LC and conventional (CV) mice were orally sensitized to cow's milk with cholera toxin as adjuvant...
March 20, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28317898/microrna-roles-in-signalling-during-lactation-an-insight-from-differential-expression-time-course-and-pathway-analyses-of-deep-sequence-data
#7
Duy N Do, Ran Li, Pier-Luc Dudemaine, Eveline M Ibeagha-Awemu
The study examined microRNA (miRNA) expression and regulatory patterns during an entire bovine lactation cycle. Total RNA from milk fat samples collected at the lactogenesis (LAC, day1 [D1] and D7), galactopoiesis (GAL, D30, D70, D130, D170 and D230) and involution (INV, D290 and when milk production dropped to 5 kg/day) stages from 9 cows was used for miRNA sequencing. A total of 475 known and 238 novel miRNAs were identified. Fifteen abundantly expressed miRNAs across lactation stages play regulatory roles in basic metabolic, cellular and immunological functions...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28315219/assessment-of-ige-reactivity-of-%C3%AE-casein-by-western-blotting-after-digestion-with-simulated-gastric-fluid
#8
Sara Benedé, Rosina López-Fandiño, Elena Molina
Cow's milk allergy is defined as an immunologically mediated adverse reaction to cow's milk proteins and it is usually, along with hen's egg allergy, the first food allergy identified in childhood.One of the main aspects to consider when evaluating the allergenic potential of food proteins is the effect of gastric digestion. It is known that allergens are usually able to survive the harsh acidic environment of the stomach, tolerate the presence of surfactants, and resist digestion by pepsin. They might also be digested into high molecular weight peptide fragments, which retain the same, or sometimes increased, IgE-binding...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28306241/development-of-chemical-isotope-labeling-lc-ms-for-milk-metabolomics-comprehensive-and-quantitative-profiling-of-the-amine-phenol-submetabolome
#9
Dorothea Mung, Liang Li
Milk is a complex sample containing a variety of proteins, lipids and metabolites. Studying the milk metabolome represents an important application of metabolomics in the general area of nutritional research. However, comprehensive and quantitative analysis of milk metabolites is a challenging task due to the wide range of variations in chemical/physical properties and concentrations of these metabolites. We report an analytical workflow for in-depth profiling of the milk metabolome based on chemical isotope labeling (CIL) and liquid chromatography mass spectrometry (LC-MS) with a focus of using dansylation labeling to target the amine/phenol submetabolome...
March 17, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28304317/early-onset-necrotizing-enterocolitis-nec-in-premature-twins
#10
B Afzal, V Elberson, C McLaughlin, V Hs Kumar
Twin infants born at 34 week gestation had frank blood in stools on day three of life on mixed feeds of formula and maternal breast milk. Sepsis work up was negative in these relatively well appearing infants with pneumatosis in the colon on abdominal x-ray. Blood in stools recurred on reintroduction of breast milk in Twin A. Both infants recovered from episodes of bloody stools on amino-acid based formula and were thriving at discharge. Early necrotizing enterocolitis in both twins is rare and has not been reported...
March 16, 2017: Journal of Neonatal-perinatal Medicine
https://www.readbyqxmd.com/read/28299866/effects-of-moringa-oleifera-silage-on-milk-yield-nutrient-digestibility-and-serum-biochemical-indexes-of-lactating-dairy-cows
#11
B Zeng, J J Sun, T Chen, B L Sun, Q He, X Y Chen, Y L Zhang, Q Y Xi
This study investigated the effects of Moringa oleifera (MO) as a partial substitute of alfalfa hay on milk yield, nutrient apparent digestibility and serum biochemical indexes of dairy cows. MO was harvested at 120 days post-seeding. Fresh MO was cut, mixed with chopped oat hay (425:575 on a DM basis), ensiled and stored for 60 days. Sixty healthy Holstein dairy cows were allocated to one of three groups: NM (no MO or control), LM (low MO; 25% alfalfa hay and 50% maize silage were replaced by MO silage) or HM (high MO; 50% alfalfa hay and 100% maize silage were replaced by MO silage)...
March 16, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28299520/on-farm-feeding-interventions-to-increase-milk-production-in-lactating-dairy-cows
#12
Metha Wanapat, Suban Foiklang, Kampanat Phesatcha, Chainarong Paoinn, Thiwakorn Ampapon, Thitima Norrapoke, Sungchhang Kang
The objective of this study was to investigate the effect of tropical legume (Phaseolus calcaratus) mixed with ruzi grass feeding on the performance of lactating dairy cows. Eighty-eight lactating dairy cows from 22 smallholder dairy farms northeast of Thailand were assigned to respective dietary treatments according to a Randomized Completely Block Design (RCBD). Four cows were selected from each farm and were allocated into two different feeding groups as follows: ruzi grass and P. calcaratus mixed with ruzi grass (1:1 ratio), respectively...
March 15, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28295685/estimation-of-genetic-parameters-for-functional-longevity-in-the-south-african-holstein-cattle-using-a-piecewise-weibull-proportional-hazards-model
#13
V E Imbayarwo-Chikosi, V Ducrocq, C B Banga, T E Halimani, J B van Wyk, A Maiwashe, K Dzama
Non-genetic factors influencing functional longevity and the heritability of the trait were estimated in South African Holsteins using a piecewise Weibull proportional hazards model. Data consisted of records of 161,222 of daughters of 2,051 sires calving between 1995 and 2013. The reference model included fixed time-independent age at first calving and time-dependent interactions involving lactation number, region, season and age of calving, within-herd class of milk production, fat and protein content, class of annual variation in herd size and the random herd-year effect...
March 14, 2017: Journal of Animal Breeding and Genetics, Zeitschrift Für Tierzüchtung und Züchtungsbiologie
https://www.readbyqxmd.com/read/28295666/impact-of-diet-composition-and-temperature-humidity-index-on-water-and-dry-matter-intake-of-high-yielding-dairy-cows
#14
S Ammer, C Lambertz, D von Soosten, K Zimmer, U Meyer, S Dänicke, M Gauly
The temperature-humidity index (THI) is widely used to characterize heat stress in dairy cattle. Diet composition is known to induce variation in metabolic-associated heat production. However, the relationships between THI and diet are poorly characterized with regard to performance and intake behaviour. Therefore, the objectives were to evaluate the impact of THI on water intake (WI), dry matter intake (DMI) and the frequency of drinking and feeding bouts in lactating dairy cows offered four dietary treatments: each contained 20% grass silage and additionally (i) 20% maize silage, 60% concentrate (M-HC); (ii) 60% maize silage, 20% concentrate (M-LC); (iii) 20% pressed beet pulp silage, 60% concentrate (BPS-HC); or (iv) 60% pressed beet pulp silage, 20% concentrate (BPS-LC) (DM basis)...
March 15, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28293923/infant-formulas-containing-hydrolysed-protein-for-prevention-of-allergic-disease-and-food-allergy
#15
REVIEW
David A Osborn, John Kh Sinn, Lisa J Jones
BACKGROUND: Allergy is common and may be associated with foods, including cow's milk formula (CMF). Formulas containing hydrolysed proteins have been used to treat infants with allergy. However, it is unclear whether hydrolysed formulas can be advocated for prevention of allergy in infants. OBJECTIVES: To compare effects on allergy and food allergy when infants are fed a hydrolysed formula versus CMF or human breast milk. If hydrolysed formulas are effective, to determine what type of hydrolysed formula is most effective, including extensively or partially hydrolysed formula (EHF/PHF)...
March 15, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28290485/complementary-transcriptomic-and-proteomic-analyses-reveal-regulatory-mechanisms-of-milk-protein-production-in-dairy-cows-consuming-different-forages
#16
Wenting Dai, Qiong Chen, Quanjuan Wang, Robin R White, Jianxin Liu, Hongyun Liu
Forage plays a critical role in the milk production of dairy cows; however, the mechanisms regulating bovine milk synthesis in dairy cows fed high forage rations with different basal forage types are not well-understood. In the study, rice straw (RS, low-quality) and alfalfa hay (AH, high-quality) diets were fed to lactating cows to explore how forage quality affected the molecular mechanisms regulating milk production using RNA-seq transcriptomic method with iTRAQ proteomic technique. A total of 554 transcripts (423 increased and 131 decreased) and 517 proteins (231 up-regulated and 286 down-regulated) were differentially expressed in the mammary glands of the two groups...
March 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28287130/a-high-concentrate-diet-induced-milk-fat-decline-via-glucagon-mediated-activation-of-amp-activated-protein-kinase-in-dairy-cows
#17
Lin Li, Yang Cao, Zhenglu Xie, Yuanshu Zhang
Dairy cows are often fed a high-concentrate (HC) diet to meet lactation demands; however, long-term concentrate feeding is unhealthy and decreases milk fat. Therefore, we investigated the effects of liver lipid metabolism on milk fat synthesis. Ten lactating Holstein cows were assigned randomly into HC and LC (low-concentrate) diet groups. After 20 weeks of feeding, milk fat declined, and lipopolysaccharide levels in the jugular, portal, and hepatic veins increased in the HC group. Liver consumption and release of nonesterified fatty acid (NEFA) into the bloodstream also decreased...
March 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28287053/proliferation-apoptosis-balance-in-staphylococcus-aureus-chronically-infected-bovine-mammary-glands-during-involution
#18
Carolina S Andreotti, Elizabet A L Pereyra, Sofía C Sacco, Celina Baravalle, María S Renna, Hugo H Ortega, Luis F Calvinho, Bibiana E Dallard
The objective of this study was to determine whether Staphylococcus aureus chronic intramammary infection (IMI) influences expression of proteins related to regulation of proliferation and apoptosis processes and proliferation/apoptosis index during active involution in bovine mammary gland. Twenty-one Holstein non-pregnant cows in late lactation either uninfected or with chronic naturally acquired S. aureus IMI were included in this study. Cows were slaughtered at 7, 14 and 21 d after cessation of milking and samples for immunohistochemical analysis were taken...
March 13, 2017: Journal of Dairy Research
https://www.readbyqxmd.com/read/28284784/trends-in-provider-management-of-patients-with-food-protein-induced-enterocolitis-syndrome
#19
Matthew Greenhawt, J Andrew Bird, Anna H Nowak-Węgrzyn
BACKGROUND: Food protein-induced enterocolitis syndrome (FPIES) is a non-IgE-mediated food allergy. OBJECTIVE: To better understand provider-level variation in FPIES knowledge and management. METHODS: A 23-question online survey was administered to AAAAI members during the spring and summer of 2014. RESULTS: Among 470 respondents, 64% reported "full understanding" of FPIES diagnosis/management; 78.8% reported managing 1 or more patient with FPIES; and 80...
March 8, 2017: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/28284697/mir-27a-controls-triacylglycerol-synthesis-in-bovine-mammary-epithelial-cells-by-targeting-peroxisome-proliferator-activated-receptor-gamma
#20
K Q Tang, Y N Wang, L S Zan, W C Yang
Growing evidence has revealed that microRNA are central elements in milk fat synthesis in mammary epithelial cells. A negative regulator of adipocyte fat synthesis, miR-27a has been reported to be involved in the regulation of milk fat synthesis in goat mammary epithelial cells; however, the regulatory role of miR-27a in bovine milk fat synthesis remains unclear. In the present study, primary bovine mammary epithelial cells (BMEC) were harvested from mid-lactation cows and cultured in Dulbecco's modified Eagle's medium/F-12 medium with 10% fetal bovine serum, 5 μg/mL of insulin, 1 μg/mL of hydrocortisone, 2 μg/mL of prolactin, 1 μg/mL of progesterone, 100 U/mL of penicillin, and 100 μg/mL of streptomycin...
March 8, 2017: Journal of Dairy Science
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