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Cow milk protein

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https://www.readbyqxmd.com/read/28651194/reference-intervals-for-hematological-and-biochemical-parameters-acute-phase-proteins-and-markers-of-oxidation-in-holstein-dairy-cows-around-3-and-30days-after-calving
#1
Pierangelo Moretti, Saverio Paltrinieri, Erminio Trevisi, Monica Probo, Annarita Ferrari, Andrea Minuti, Alessia Giordano
The establishment of specific reference intervals (RIs) is advisable when different metabolic conditions in the patient population are present or when existing RIs are not suitable. Holstein dairy cows, at the start of lactation, experience a negative energy balance and an altered immune function that can lead to different levels of blood parameters compared with cows at peak lactation. The aim of this study was the determination of RIs for Holstein cows at 3±1 and 30±3days in milk. To this aim, 145 cows, from 4 herds, were sampled...
June 20, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28647336/milk-composition-and-health-status-from-mammary-gland-quarters-adjacent-to-glands-affected-with-naturally-occurring-clinical-mastitis
#2
Marcel G Paixão, Luiz R Abreu, Roxann Richert, Pamela L Ruegg
Mammary gland quarters have usually been considered to be anatomically and physiologically independent, but some recent research has indicated more interdependence than previously reported. The objective of this study was to compare milk composition (fat, total protein, lactose, solids-not-fat, and chloride) and health status (somatic cell count, differential leukocyte count, and lactate dehydrogenase) of milk samples from unaffected mammary glands of an udder with a single clinically inflamed quarter to results of milk samples from healthy mammary glands of healthy cows...
June 21, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28647331/combination-of-histidine-lysine-methionine-and-leucine-promotes-%C3%AE-casein-synthesis-via-the-mechanistic-target-of-rapamycin-signaling-pathway-in-bovine-mammary-epithelial-cells
#3
H N Gao, S G Zhao, N Zheng, Y D Zhang, S S Wang, X Q Zhou, J Q Wang
The ratio of different AA in the diets of cows is vital to improve milk protein yield. β-Casein is one of the important milk proteins with high nutritive value. However, the suitable ratio of essential amino acids (EAA) for the expression of β-casein in the immortalized bovine mammary epithelial cell line is not fully characterized. This study employed response surface methodology to determine the optimal ratio of His, Lys, Met, and Leu on β-casein expression level in vitro and clarified the effect of the 4 EAA on β-casein via the mechanistic target of rapamycin (mTOR) signaling pathway...
June 21, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28647328/effects-of-feeding-an-immunomodulatory-supplement-to-heat-stressed-or-actively-cooled-cows-during-late-gestation-on-postnatal-immunity-health-and-growth-of-calves
#4
Amy L Skibiel, Thiago F Fabris, Fabiana N Corrá, Yazielis M Torres, Derek J McLean, James D Chapman, David J Kirk, Geoffrey E Dahl, Jimena Laporta
Heat stress during late gestation negatively affects the physiology, health, and productivity of dairy cows as well as the calves developing in utero. Providing cows with active cooling devices, such as fans and soakers, and supplementing cows with an immunomodulating feed additive, OmniGen-AF (OG; Phibro Animal Health Corporation), improves immune function and milk yield of cows. It is unknown if maternal supplementation of OG combined with active cooling during late gestation might benefit the developing calf as well...
June 21, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28643898/identification-of-cross-reactive-b-cell-epitopes-between-bos-d-9-0101-bos-taurus-and-gly-m-5-0101-glycine-max-by-epitope-mapping-maldi-tof-ms
#5
Ángela María Candreva, Mario Ferrer-Navarro, Silvia Bronsoms, Alejandra Quiroga, Renata Curciarello, Ana Cauerhff, Silvana Petruccelli, Guillermo Horacio Docena, Sebastián Alejandro Trejo
Exposure to cow's milk constitutes one of the most common causes of food allergy. In addition, exposure to soy proteins has become relevant in a restricted proportion of milk allergic pediatric patients treated with soy formulae as a dairy substitute, because of the cross-allergenicity described between soy and milk proteins . We have previously identified several cross-reactive allergens between milk and soy that may explain this intolerance. The purpose of the present work was to identify epitopes in the purified αS1-casein and the recombinant soy allergen Gly m 5...
June 23, 2017: Proteomics
https://www.readbyqxmd.com/read/28643224/establishment-of-a-3d-cell-culture-model-of-primary-bovine-mammary-epithelial-cells-extracted-from-fresh-milk
#6
Maria Hillreiner, Nadine I Müller, Heiner M Koch, Christiane Schmautz, Bernhard Küster, Michael W Pfaffl, Heike Kliem
For the investigation of molecular processes underlying diseases of the bovine mammary gland, primary bovine mammary epithelial cells (pbMEC) are used. They are known to contribute to the innate immune system of the bovine mammary gland. The functionality of pbMEC depends on the maintenance of in vivo characteristics. So far, the optimization of pbMEC culture conditions was intended in a variety of experiments. For this purpose, most of the studies used stable cell lines or primary cells obtained from udder biopsies of slaughtered animals...
June 22, 2017: In Vitro Cellular & Developmental Biology. Animal
https://www.readbyqxmd.com/read/28636003/in-vitro-modulation-of-gut-microbiota-by-whey-protein-to-preserve-intestinal-health
#7
T Sánchez-Moya, R López-Nicolás, D Planes, C A González-Bermúdez, G Ros-Berruezo, C Frontela-Saseta
The effect of several types of whey milk - cow, sheep, goat and a mixture of them (60 : 20 : 20, respectively) - was assessed in the human gut microbiota. The prebiotic potential of these substrates was evaluated through in vitro gastrointestinal digestion following faecal batch culture fermentations (mimicking colonic fermentation) for 48 hours, using faeces from normal-weight (NW) and obese (OB) donors. Throughout the fermentation process, pH, gas production, short chain and branched fatty acids (SCFA-BCFA) were measured, as well as the changes of microbiota using qPCR...
June 21, 2017: Food & Function
https://www.readbyqxmd.com/read/28628759/do-infants-with-cow-s-milk-protein-allergy-have-inadequate-levels-of-vitamin-d
#8
Cristiane M Silva, Silvia A da Silva, Margarida M de C Antunes, Gisélia Alves Pontes da Silva, Emanuel Sávio Cavalcanti Sarinho, Kátia G Brandt
OBJECTIVE: To verify whether infants with cow's milk protein allergy (CMPA) have inadequate vitamin D levels. METHODS: This cross-sectional study included 120 children aged 2 years or younger, one group with CMPA and a control group. The children were recruited at the pediatric gastroenterology, allergology, and pediatric outpatient clinics of a university hospital in the Northeast of Brazil. A questionnaire was administered to the caregiver and blood samples were collected for vitamin D quantification...
June 16, 2017: Jornal de Pediatria
https://www.readbyqxmd.com/read/28625184/detection-of-70-kda-heat-shock-protein-in-the-saliva-of-dairy-cows
#9
Elsa Lamy, Viktor Jurkovich, Lénia Rodrigues, Ana Geraldo, Liliana Cachucho, Flávio Silva, Catarina Matos, Fernando Capela E Silva, Cristina Pinheiro, László Könyves, Mikolt Bakony, Alfredo Pereira
This Research Communication describes, for the first time, the detection of HSP70 in saliva of dairy cows. Thermal stress is a major environmental stress that limits animal growth, metabolism, and productivity. The cellular response to heat stress involves the synthesis of heat shock proteins (HSPs), presumably to protect the functional stability of cells at increasing temperatures. HSP70 has been found to be present in cattle blood serum and may also be present in other secretory fluids, such as saliva, as already observed in humans...
June 19, 2017: Journal of Dairy Research
https://www.readbyqxmd.com/read/28624284/comparing-the-effect-of-homogenization-and-heat-processing-on-the-properties-and-in-vitro-digestion-of-milk-from-organic-and-conventional-dairy-herds
#10
D L Van Hekken, M H Tunick, D X Ren, P M Tomasula
We compared the effects of homogenization and heat processing on the chemical and in vitro digestion traits of milk from organic and conventional herds. Raw milk from organic (>50% of dry matter intake from pasture) and conventional (no access to pasture) farms were adjusted to commercial whole and nonfat milk fat standards, and processed with or without homogenization, and with high-temperature-short-time or UHT pasteurization. The milk then underwent in vitro gastrointestinal digestion. Comparison of milk from organic and conventional herds showed that the milks responded to processing in similar ways...
June 14, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28624281/short-communication-genetic-parameters-for-milk-protein-composition-predicted-using-mid-infrared-spectroscopy-in-the-french-montb%C3%A3-liarde-normande-and-holstein-dairy-cattle-breeds
#11
M P Sanchez, M Ferrand, M Gelé, D Pourchet, G Miranda, P Martin, M Brochard, D Boichard
Genetic parameters for the major milk proteins were estimated in the 3 main French dairy cattle breeds (i.e. Montbéliarde, Normande, and Holstein) as part of the PhénoFinlait program. The 6 major milk protein contents as well as the total protein content (PC) were estimated from mid-infrared spectrometry on 133,592 test-day milk samples from 20,434 cows in first lactation. Lactation means, expressed as a percentage of milk (protein contents) or of protein (protein fractions), were analyzed with an animal mixed model including fixed environmental effects (herd, year × month of calving, and spectrometer) and a random genetic effect...
June 14, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28624276/cow-and-environmental-factors-associated-with-protein-fractions-and-free-amino-acids-predicted-using-mid-infrared-spectroscopy-in-bovine-milk
#12
A McDermott, M De Marchi, D P Berry, G Visentin, M A Fenelon, N Lopez-Villalobos, S McParland
The objective of the present study was to identify the factors associated with both the protein composition and free amino acid (FAA) composition of bovine milk predicted using mid-infrared spectroscopy. Milk samples were available from 7 research herds and 69 commercial herds. The spectral data from the research herds comprised 94,286 separate morning and evening milk samples; the spectral data from the commercial herds comprised 40,260 milk samples representing a composite sample of both the morning and evening milkings...
June 14, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28624274/effect-of-nutritional-immunomodulation-and-heat-stress-during-the-dry-period-on-subsequent-performance-of-cows
#13
Thiago F Fabris, Jimena Laporta, Fabiana N Corra, Yazielis M Torres, David J Kirk, Derek J McLean, J D Chapman, Geoffrey E Dahl
Heat stress in dairy cows during the dry period impairs milk yield in the next lactation. Feeding OmniGen-AF (OG; Phibro Animal Health Corp., Teaneck, NJ) to lactating cows during heat stress may increase dry matter intake (DMI) and lowers respiration rate (RR) and rectal temperature (RT), but the effects in dry cows are not known. We hypothesized that OG supplementation before, during, and after the dry period (approximately 160 d total) would overcome the effects of heat stress and improve cow performance in the next lactation...
June 14, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28606324/serological-lessons-from-the-bovine-lungworm-dictyocaulus-viviparus-antibody-titre-development-is-independent-of-the-infection-dose-and-reinfection-shortens-seropositivity
#14
Christina Strube, Andrea Springer, Anne-Marie Schunn, Andrew B Forbes
Infections with the bovine lungworm Dictyocaulus viviparus, the causative agent of parasitic bronchitis, are accompanied by substantial economic losses due to impacts on production, clinical respiratory disease or even death of diseased cattle. To detect lungworm antibodies in cattle, an enzyme-linked immunosorbent assay (ELISA) based on recombinant major sperm protein (MSP) has been developed. However, it remained unknown whether the infection dose influences antibody levels, and how acquired immunity influences antibody level patterns during reinfections...
August 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28602101/expert-panel-on-practice-patterns-in-the-management-of-cow-s-milk-protein-allergy-and-associated-economic-burden-of-disease-on-health-service-in-turkey
#15
Bulent Enis Sekerel, Oznur Seyhun
AIMS: To evaluate practice patterns in the management of cow's milk protein allergy (CMPA) and associated economic burden of disease on health service in Turkey. MATERIALS AND METHODS: This study was based on experts' views on the practice patterns in management of CMPA manifesting with either proctocolitis or eczema symptoms and, thereby, aimed to estimate economic burden of CMPA. Practice patterns were determined via patient flow charts developed by experts using the modified Delphi method for CMPA presented with proctocolitis and eczema...
June 22, 2017: Journal of Medical Economics
https://www.readbyqxmd.com/read/28601462/addition-of-glycerol-to-lactating-cow-diets-stimulates-dry-matter-intake-and-milk-protein-yield-to-a-greater-extent-than-addition-of-corn-grain
#16
D L Bajramaj, R V Curtis, J J M Kim, M Corredig, J Doelman, T C Wright, V R Osborne, J P Cant
The objective of this study was to determine if the addition of glycerol to the diet of dairy cows would stimulate milk protein yield in the same manner as the addition of corn grain. Twelve multiparous lactating dairy cows at 81 ± 5 d in milk were subjected to 3 dietary treatments in a replicated 3 × 3 Latin square design for 28-d periods. The diets were a 70% forage diet considered the basal diet, the basal diet with 19% ground and high-moisture corn replacing forages, and the basal diet with 15% refined glycerol and 4% added protein supplements to be isocaloric and isonitrogenous with the corn diet...
June 7, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28601460/production-and-economic-responses-to-intensification-of-pasture-based-dairy-production-systems
#17
K A Macdonald, J W Penno, J A S Lancaster, A M Bryant, J M Kidd, J R Roche
Production from pasture-based dairy farms can be increased through using N fertilizer to increase pasture grown, increasing stocking rate, importing feeds from off farm (i.e., supplementary feeds, such as cereal silages, grains, or co-product feeds), or through a combination of these strategies. Increased production can improve profitability, provided the marginal cost of the additional milk produced is less than the milk price received. A multiyear production system experiment was established to investigate the biological and economic responses to intensification on pasture-based dairy farms; 7 experimental farmlets were established and managed independently for 3 yr...
June 7, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28601455/within-herd-prevalence-of-intramammary-infection-caused-by-mycoplasma-bovis-and-associations-between-cow-udder-health-milk-yield-and-composition
#18
Anri A E Timonen, Jørgen Katholm, Anders Petersen, Kerli Mõtus, Piret Kalmus
Subclinical mastitis is one of the major health problems in dairy herds due to decreased milk production and reduced milk quality. The aim of this study was to examine the within-herd prevalence of subclinical intramammary infection caused by Mycoplasma bovis and to evaluate associations between M. bovis and cow daily milk yield, udder health, and milk composition. Individual cow composite milk samples (n = 522) were collected from all lactating dairy cows in 1 Estonian dairy farm in November 2014. Daily milk yield, days in milk, and parity were recorded...
June 7, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28601453/efficacy-and-clinical-safety-of-pegbovigrastim-for-preventing-naturally-occurring-clinical-mastitis-in-periparturient-primiparous-and-multiparous-cows-on-us-commercial-dairies
#19
Peter Canning, Renee Hassfurther, Terry TerHune, Karen Rogers, Scott Abbott, David Kolb
Periparturient dairy cows experience impaired immune function, exhibited as a transient decrease in neutrophil function and neutropenia. This decrease in immune competence is associated with an increase in susceptibility to bacterial infections, including mastitis and metritis. Bovine granulocyte colony stimulating factor (bG-CSF) is an endogenous protein that enhances neutrophil bactericidal functions and increases the production of neutrophils from bone marrow precursors. Administration of pegbovigrastim (recombinant bG-CSF covalently bound to polyethylene glycol) around the time of calving has been shown to reduce the incidence of new clinical mastitis cases in a natural disease model system...
June 7, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28601445/production-and-nitrogen-utilization-in-lactating-dairy-cows-fed-ground-field-peas-with-or-without-ruminally-protected-lysine-and-methionine
#20
A B D Pereira, N L Whitehouse, K M Aragona, C S Schwab, S F Reis, A F Brito
Previous research has shown that cows fed ≥24% of the diet dry matter (DM) as field peas decreased milk yield as well as concentration and yield of milk protein, possibly due to reduced DM intake and limited supply of Lys and Met. Twelve multiparous and 4 primiparous lactating Holstein cows were randomly assigned to 1 of 4 diets in a replicated 4 × 4 Latin square design. The diets contained (DM basis) 34.8% corn silage, 15.2% grass-legume silage, 5.9% roasted soybean, 2.4% mineral-vitamin premix, 2.0% alfalfa pellets, and either (1) 36% ground corn, 2...
June 7, 2017: Journal of Dairy Science
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