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Cow milk protein

Q Chen, X Ke, J S Zhang, S Y Lai, F Fang, W M Mo, Y P Ren
Fraud in milk and dairy products occurs when cow milk is added to sheep and goat milk for economic reasons. No reliable, selective, and sensitive method exists for quantifying the milk percentage of different species. This work reports the development and validation of a proteomics-based method for the qualitative detection and quantitative determination of cow, sheep, and goat milks in the raw materials used for dairy products. β-Lactoglobulin was selected as the protein marker because it is a major protein in milk and whey powder...
October 19, 2016: Journal of Dairy Science
Jaqueline de Paula Rezende, Guilherme Max Dias Ferreira, Gabriel Max Dias Ferreira, Luis Henrique Mendes da Silva, Maria do Carmo Hepanhol da Silva, Maximiliano Soares Pinto, Ana Clarissa Dos Santos Pires
Bovine serum albumin (BSA) has been recognized as a marker of the cow's health, milk quality, an allergenic protein and as a carrier. Its detection is important in the food, pharmaceutical and medical industries. However, traditional techniques used to detect BSA are often time-consuming, expensive, and show limited sensitivity. This paper describes properties of polydiacetylene-triblock copolymer (L64) nanosensors, synthesized to easily detect BSA. Sensor efficiency was studied as a function of nanosensor composition, polydiacetylene chemical structures, BSA conformation and hydrophobic domain availability, using spectroscopic, calorimetric, light scattering, and electrokinetic analyses...
January 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
Xing Ke, Jingshun Zhang, Shiyun Lai, Qi Chen, Yu Zhang, Yirong Jiang, Weimin Mo, Yiping Ren
The aim of the study was to develop a method for quantification of cow's whey and whole milk powder in goat or sheep milk products including infant formula. A ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) method was established for simultaneous quantification of four caseins and two major whey proteins by detecting their signature peptides, which were able to act as markers for differentiating goat or sheep from cow whey and whole milk powder in infant formulas. The signature peptides were screened based on the computational prediction by Biolynx software, and confirmed by database searching after analysis of liquid chromatography-quadrupole-time-of-flight tandem mass spectrometry (LC-Q-TOF-MS)...
October 19, 2016: Analytical and Bioanalytical Chemistry
Hanne Gro Olsen, Tim Martin Knutsen, Anna M Lewandowska-Sabat, Harald Grove, Torfinn Nome, Morten Svendsen, Mariann Arnyasi, Marte Sodeland, Kristil K Sundsaasen, Sandra Rinne Dahl, Bjørg Heringstad, Hanne H Hansen, Ingrid Olsaker, Matthew Peter Kent, Sigbjørn Lien
BACKGROUND: Clinical mastitis is an inflammation of the mammary gland and causes significant costs to dairy production. It is unfavourably genetically correlated to milk production, and, thus, knowledge of the mechanisms that underlie these traits would be valuable to improve both of them simultaneously through breeding. A quantitative trait locus (QTL) that affects both clinical mastitis and milk production has recently been fine-mapped to around 89 Mb on bovine chromosome 6 (BTA6), but identification of the gene that underlies this QTL was not possible due to the strong linkage disequilibrium between single nucleotide polymorphisms (SNPs) within this region...
October 19, 2016: Genetics, Selection, Evolution: GSE
Delphine Vincent, Aaron Elkins, Mark R Condina, Vilnis Ezernieks, Simone Rochfort
Cow's milk is an important source of proteins in human nutrition. On average, cow's milk contains 3.5% protein. The most abundant proteins in bovine milk are caseins and some of the whey proteins, namely beta-lactoglobulin, alpha-lactalbumin, and serum albumin. A number of allelic variants and post-translationally modified forms of these proteins have been identified. Their occurrence varies with breed, individuality, stage of lactation, and health and nutritional status of the animal. It is therefore essential to have reliable methods of detection and quantitation of these proteins...
2016: PloS One
G Klop, S van Laar-van Schuppen, W F Pellikaan, W H Hendriks, A Bannink, J Dijkstra
The adaptation of dairy cows to methane (CH4)-mitigating feed additives was evaluated using the in vitro gas production (GP) technique. Nine rumen-fistulated lactating Holstein cows were grouped into three blocks and within blocks randomly assigned to one of three experimental diets: Control (CON; no feed additive), Agolin Ruminant® (AR; 0.05 g/kg dry matter (DM)) or lauric acid (LA; 30 g/kg DM). Total mixed rations composed of maize silage, grass silage and concentrate were fed in a 40 : 30 : 30 ratio on DM basis...
October 17, 2016: Animal: An International Journal of Animal Bioscience
Pernille Henriksen, Malene Landbo Børresen, Kathrin Dahl
Food protein-induced enterocolitis syndrome (FPIES) is a rare non-IgE mediated condition. Symptoms of acute FPIES include vomiting, diarrhoea and dehydration. Symptoms are often misread as acute abdomen or sepsis. The condition can be fatal. There are no biomarkers for FPIES, and skin prick test for cow milk is often negative. Treatment is hydrolysed formula milk. This case story describes a one-month-old boy with diarrhoea and an output of up till 2.3 l per day. With this case story we wish to increase the knowledge of FPIES and emphasize the importance of having the diagnosis in mind when confronted with the very ill, dehydrated infant...
October 10, 2016: Ugeskrift for Laeger
Rut Anne Thomassen, Janne Anita Kvammen, Mari Borge Eskerud, Pétur Benedikt Júlíusson, Christine Henriksen, Jarle Rugtveit
OBJECTIVES: To investigate iodine status and growth in cow's milk protein allergic infants and to identify potential predictors of iodine status and growth. METHODS: Fifty-seven infants under two years of age were included in an observational cross-sectional study. Two spot urine samples were collected and analysed for iodine, together with a three-day food record and a food frequency questionnaire. Urine iodine concentrations were compared to the WHO cut-off values for iodine deficiency...
October 12, 2016: Journal of Pediatric Gastroenterology and Nutrition
Yvan Vandenplas, Muath Abdurrahman Alturaiki, Wafaa Al-Qabandi, Fawaz AlRefaee, Ziad Bassil, Bassam Eid, Ahmed El Beleidy, Ali Ibrahim Almehaidib, Pierre Mouawad, Maroun Sokhn
This paper covers algorithms for the management of regurgitation, constipation and infantile colic in infants. Anti-regurgitation formula may be considered in infants with troublesome regurgitation, while diagnostic investigations or drug therapy are not indicated in the absence of warning signs. Although probiotics have shown some positive evidence for the management of functional gastrointestinal disorders (FGIDs), the evidence is not strong enough to make a recommendation. A partially hydrolyzed infant formula with prebiotics and β-palmitate may be considered as a dietary intervention for functional constipation in formula fed infants...
September 2016: Pediatric Gastroenterology, Hepatology & Nutrition
Patrice Fardellone, Alice Séjourné, Hubert Blain, Bernard Cortet, Thierry Thomas
Cow's milk is often severely criticized as a cause of multiple health problems, including an increased risk of fractures. A close look at the scientific literature shows a striking contradiction. On the one hand, experimental studies of surrogate markers (e.g., bone turnover markers and bone mineral density [BMD]) usually indicate benefits from drinking cow's milk. On the other, the findings from epidemiological studies are conflicting and disconcerting. In all age groups, including children and postmenopausal women, consuming cow's milk, powdered milk supplements, or whey protein is associated with a slower bone turnover and unchanged or higher BMD values...
October 7, 2016: Joint, Bone, Spine: Revue du Rhumatisme
Tom F O'Callaghan, Deirdre Hennessy, Stephen McAuliffe, Kieran N Kilcawley, Michael O'Donovan, Pat Dillon, R Paul Ross, Catherine Stanton
The aim of this study was to investigate the effects of different feeding systems on milk quality and composition. Fifty-four multiparous and primiparous Friesian lactating cows were divided into 3 groups (n = 18) to study the effects of 3 feeding systems over a full lactation. Group 1 was housed indoors and offered a total mixed ration diet (TMR), group 2 was maintained outdoors on a perennial ryegrass pasture (referred to as grass), and group 3 was also grazed outdoors on a perennial ryegrass/white clover pasture (referred to as clover)...
October 5, 2016: Journal of Dairy Science
L W Hall, F R Dunshea, J D Allen, S Rungruang, J L Collier, N M Long, R J Collier
Betaine (BET), a natural, organic osmolyte, improves cellular efficiency by acting as a chaperone, refolding denatured proteins. To test if dietary BET reduced the effect of heat stress (HS) in lactating dairy cows, multiparous, lactating Holstein cows (n = 24) were blocked by days in milk (101.4 ± 8.6 d) and randomly assigned to 1 of 3 daily intakes of dietary BET: the control (CON) group received no BET, mid intake (MID) received 57 mg of BET/kg of body weight, and high dose (HI) received 114 mg of BET/kg of body weight...
October 5, 2016: Journal of Dairy Science
J I Weller, E Ezra
The objective was to test the hypothesis that more frequent but less accurately analyzed milk components may give a more representative measure of a cow's total lactation production. Daily records for milk production and fat and protein concentration collected by the AfiLab recording system (Afimilk, Kibbutz Afikim, Israel) from January 2014 to January 2016 from 47 large kibbutz (communal) herds distributed throughout Israel with a total of 37,486 Israeli Holstein cows were compared with the same statistics derived from monthly test day records derived by Bentley and Foss milk analyzers at the central laboratory of the Israel Cattle Breeders Association...
October 5, 2016: Journal of Dairy Science
Anita M Nucci, Suvi M Virtanen, Susa Sorkio, Sonja Bärlund, David Cuthbertson, Ulla Uusitalo, Margaret L Lawson, Marja Salonen, Carol L Berseth, Anne Ormisson, Eveliina Lehtonen, Erkki Savilahti, Dorothy J Becker, John Dupré, Jeffrey P Krischer, Mikael Knip, Hans K Åkerblom
Differences in breastfeeding, other milk feeding and complementary feeding patterns were evaluated in infants at increased genetic risk with and without maternal type 1 diabetes (T1D). The Trial to Reduce IDDM in the Genetically at Risk is an international nutritional primary prevention double-blinded randomized trial to test whether weaning to extensively hydrolyzed vs. intact cow's milk protein formula will decrease the development of T1D-associated autoantibodies and T1D. Infant diet was prospectively assessed at two visits and seven telephone interviews between birth and 8 months...
October 7, 2016: Maternal & Child Nutrition
Veronica Sanda Chedea, Rodica Stefania Pelmus, Cristina Lazar, Gina Cecilia Pistol, Loredana Georgeta Calin, Smaranda Mariana Toma, Catalin Dragomir, Ionelia Taranu
BACKGROUND: The effect of a diet containing 15% grape pomace (GP) on the general health status and milk quality of dairy cows was assessed by plasma biochemistry and total polyphenols (TP) content, milk polyphenols, composition and protein fractions. RESULTS: Among the polyphenols, measured by LC-MS, in GP, in feed containing GP (GP+) or not (GP-), gallic acid and epicatechin were present in the highest concentration (67.58 µg/mL and 19.23 µg/mL, respectively)...
October 6, 2016: Journal of the Science of Food and Agriculture
Abderrahim Benmoussa, Chan Ho C Lee, Benoit Laffont, Patricia Savard, Jonathan Laugier, Eric Boilard, Caroline Gilbert, Ismail Fliss, Patrick Provost
BACKGROUND: MicroRNAs are small, gene-regulatory noncoding RNA species present in large amounts in milk, where they seem to be protected against degradative conditions, presumably because of their association with exosomes. OBJECTIVE: We monitored the relative stability of commercial dairy cow milk microRNAs during digestion and examined their associations with extracellular vesicles (EVs). METHODS: We used a computer-controlled, in vitro, gastrointestinal model TNO intestinal model-1 (TIM-1) and analyzed, by quantitative polymerase chain reaction, the concentration of 2 microRNAs within gastrointestinal tract compartments at different points in time...
October 5, 2016: Journal of Nutrition
T Usman, Y Yu, L Zhai, C Liu, X Wang, Y Wang
Cluster of differentiation 4 gene (CD4) is well known for its role in immunity, but its effects on production traits remain to be elucidated. The present study was designed to explore single nucleotide polymorphisms (SNPs) in the exons, flanking introns, and promoter of CD4, as well as to analyze their effects on milk production traits (percentage of protein, fat, and lactose; mastitis indicator traits somatic cell count; and somatic cell score). A total of 10 SNPs, including eight in the exon and two in the intron regions, were identified using pooled DNA sequencing...
September 16, 2016: Genetics and Molecular Research: GMR
C R Muegge, K M Brennan, J P Schoonmaker
Angus × Simmental cows ( = 48; BW = 595 ± 17.4 kg, BCS = 5.26 ± 0.05, and age = 2.3 ± 0.07 yr), pregnant with male fetuses, were used to determine the effect of Se source during the last 80 d of gestation and first 108 d of lactation on cow and calf performance. At 203 d in gestation, cows were blocked by BW, breed composition, age, and calf sire and randomly allotted to organic Se, inorganic Se, or no Se treatments. Diets contained corn silage, corn stover, haylage, dried distillers' grains with solubles, and minerals and were formulated to contain 10...
August 2016: Journal of Animal Science
M L Douglas, L C Marett, K L Macmillan, J M Morton, M C Hannah, A D Fisher, M J Auldist
A positive association between milk protein concentration (MPC) and reproductive performance in dairy cows has been shown in several studies globally. This association may positively influence farm productivity and profitability, particularly in seasonally calving, pasture-based herds. However, the differences in milk production and energy allocation, physical characteristics, and blood plasma nutrient status between cows with differing MPC have not been examined, and the underlying mechanisms responsible for the association remain undefined...
September 28, 2016: Journal of Dairy Science
Sebastien Elis, Alice Desmarchais, Sandrine Freret, Virginie Maillard, Valérie Labas, Juliette Cognié, Eric Briant, Celine Hivelin, Joëlle Dupont, Svetlana Uzbekova
The objective of this study was to determine whether fish oil supplement has an effect on adipose tissue lipid profiles and gene expression in postpartum dairy cows. Holstein cows were supplemented with either long-chain n-3 polyunsaturated fatty acid (PUFA; protected fish oil) or control PUFA (n-6; toasted soybeans) for 2 mo after calving (n = 23 per diet). These cows showed no difference in milk production or metabolic parameters, but exhibited a tendency toward a decrease in early embryo mortality rate after artificial insemination...
September 28, 2016: Journal of Dairy Science
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