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https://www.readbyqxmd.com/read/28427257/effect-of-dietary-calcium-concentrations-in-low-non-phytate-phosphorus-diets-containing-phytase-on-growth-performance-bone-mineralization-litter-quality-and-footpad-dermatitis-incidence-in-growing-broiler-chickens
#1
Jong Hyuk Kim, Hyunjung Jung, Franco Martinez Pitargue, Gi Ppeum Han, Hyeon Seok Choi, Dong Yong Kil
Objective: An experiment was conducted to investigate the effect of dietary Ca concentrations in low non-phytate phosphorus (NPP) diets containing phytase on growth performance, bone mineralization, litter quality, and footpad dermatitis (FPD) incidence in growing broiler chickens. Methods: A total of 1,800 21-day-old Ross 308 growing broiler chickens were allotted to 1 of 6 dietary treatments with 6 replicated cages. Six diets were formulated to provide increasing Ca concentrations of 4...
April 21, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28427256/effect-of-superdosing-phytase-on-productive-performance-and-egg-quality-in-laying-hens
#2
Jong Hyuk Kim, Franco Martinez Pitargue, Hyunjung Jung, Gi Ppeum Han, Hyeon Seok Choi, Dong Yong Kil
Objective: An experiment was conducted to determine the effect of superdosing phytase on productive performance and egg quality in laying hens. Methods: A total of 200 42-wk-old Hy-Line Brown laying hens were allotted into 1 of 5 dietary treatments with 5 replicates consisting of 8 hens per replicate. The positive control (PC) and negative control diets (NC) were prepared based on the recommended P levels in layer diets. Supplemental phytase was added to the negative control diet at 10,000 (SD10), 20,000 (SD20), or 30,000 (SD30) FTU/kg...
April 21, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28419372/nutrient-and-fiber-utilization-responses-of-supplemental-xylanase-in-broiler-chickens-fed-wheat-based-diets-are-independent-of-the-adaptation-period-to-test-diets2
#3
E Kiarie, M C Walsh, L F Romero, S Arent, V Ravindran
The effects of adaptation (AD) to xylanase-supplemented diets on nutrient and fiber utilization in 21-d-old broilers were investigated. Six treatments, arranged in two levels of AD (starting at d 0 or d 14 of age) and three levels of xylanase (0 or 2,500 or 5,000 xylanase units/kg feed) were used. All diets had 500 phytase U/kg and 0.3% TiO2 as indigestible marker. A total of 384 d old male broiler (Ross 308) chicks were divided into two groups. The first group was assigned on weight basis to 24 cages (8 chicks per cage) and randomly allocated to the diets from d 0...
April 17, 2017: Poultry Science
https://www.readbyqxmd.com/read/28405835/high-yield-production-of-pure-tagatose-from-fructose-by-a-three-step-enzymatic-cascade-reaction
#4
Seon-Hwa Lee, Seung-Hye Hong, Kyoung-Rok Kim, Deok-Kun Oh
OBJECTIVE: To produce tagatose from fructose with a high conversion rate and to establish a high-yield purification method of tagatose from the reaction mixture. RESULTS: Fructose at 1 M (180 g l(-1)) was converted to 0.8 M (144 g l(-1)) tagatose by a three-step enzymatic cascade reaction, involving hexokinase, plus ATP, fructose-1,6-biphosphate aldolase, phytase, over 16 h with a productivity of 9 g l(-1) h(-1). No byproducts were detected. Tagatose was recrystallized from ethanol to a purity of 99...
April 12, 2017: Biotechnology Letters
https://www.readbyqxmd.com/read/28398093/increased-iron-level-in-phytase-supplemented-diets-reduce-performance-and-nutrient-utilisation-in-broiler-chickens
#5
M Akter, P A Iji, H Graham
1. The effect of different levels of dietary iron on phytase activity and its subsequent effect on broiler performance was investigated in a 3 x 2 factorial arrangement. A total of 360 day-old Ross 308 male broiler chicks were distributed to 6 experimental diets, formulated with three levels of Fe (60, 80 and 100 mg/kg) and two levels of phytase (0, 500 FTU/kg). 2. Phytase supplemented to mid-Fe diets increased feed consumption more than the non-supplemented diet at d 24. From hatch to d 35, Fe x phytase interaction significantly influenced the FI, BWG and FCR...
April 11, 2017: British Poultry Science
https://www.readbyqxmd.com/read/28384593/thermo-acid-stable-phytase-mediated-enhancement-of-bioethanol-production-using-colocasia-esculenta
#6
Melvin Makolomakwa, Adarsh Kumar Puri, Kugen Permaul, Suren Singh
Phytase production by the thermophilic mould Thermomyces lanuginosus SSBP was enhanced 8.56-fold in submerged fermentation, which was further improved in fed-batch cultivations. The protein was purified to homogeneity using ammonium sulphate precipitation, Resource Q anion exchange and Superdex gel-filtration chromatography, with an overall purification of 24.7-fold and a yield of 5.16%. The purified 49kDa protein was optimally active at 55°C and pH 5.0, and was stable between 50 and 90°C from pH 3.0-6.0, with a half-life of 138...
March 29, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28380608/performance-intestinal-microflora-and-amino-acid-digestibility-altered-by-exogenous-enzymes-in-broilers-fed-wheat-or-sorghum-based-diets
#7
D Wu, S B Wu, M Choct, R A Swick
The objective of the current study was to compare the effects of dietary enzymes and nutrient restriction on performance and bone mineralization in birds fed wheat- or sorghum-based diets. A total of 720 d-old male broiler chicks were randomly allocated to 8 treatments, with 6 replicates per treatment and 15 birds per replicate. Birds were reared in floor pens from 0 to 35 d. The study used a 2 × 4 factorial arrangement with 2 grains (sorghum or wheat) and 4 diets: positive control (no enzyme and ME, digestible Lys, Ca, and P sufficient, negative control (NC; no enzyme and reduced ME [-100 kcal/kg], digestible AA [-2%], Ca [-0...
February 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28380588/effects-of-zinc-oxide-and-microbial-phytase-on-digestibility-of-calcium-and-phosphorus-in-maize-based-diets-fed-to-growing-pigs
#8
L Blavi, D Sola-Oriol, J F Perez, H H Stein
An experiment was conducted to test the hypothesis that inclusion of Zn at a pharmacological level in diets fed to pigs affects apparent total tract digestibility (ATTD) of Ca and P and standardized total tract digestibility (STTD) of Ca. The second hypothesis was that inclusion of microbial phytase increases the ATTD of Ca and P and the STTD of Ca regardless of the concentration of Zn in the diet. Fifty-six growing barrows (15.4 ± 1.9 kg average BW) were allotted to a randomized complete block design with 7 dietary treatments and 8 pigs per treatment...
February 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28380580/standardized-total-tract-digestibility-of-phosphorus-in-flaxseed-meal-fed-to-growing-and-finishing-pigs-without-or-with-phytase-supplementation
#9
J W Kim, S P Ndou, G A Mejicanos, C M Nyachoti
Two experiments were conducted to determine the apparent total tract digestibility (ATTD) and standardized total tract digestibility (STTD) of P in flaxseed meal (FM) and the effect of dietary microbial phytase on the digestibility of P in FM fed to growing and finishing pigs. In Exp. 1, eighteen growing barrows (26.6 ± 1.8 kg BW) were allotted to 1 of 3 experimental diets consisting of a diet containing 32% FM that was fed with or without phytase at 500 phytase units (FTU/kg and a P-free diet in a completely randomized design to give 6 replicates per diet...
February 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28379544/bacillus-subtilis-strain-specificity-affects-performance-improvement-in-broilers
#10
L Rhayat, V Jacquier, K S Brinch, P Nielsen, A Nelson, P-A Geraert, E Devillard
The study reports the effects on broiler performance of a newly isolated Bacillus subtilis strain, which is phylogenetically not closely related to already well-described strains of B. subtilis. In the first experiment, birds were reared in battery cages and exposed to C. perfringens. An increase in growth performance was observed with the strain when compared to the challenged animals. Three additional growth trials were conducted to 35 d of age, in different rearing conditions (genetic breeds, corn-soybean meal-based diet with or without animal proteins, in presence or absence of phytase, on fresh or used litter) to investigate the efficacy and the specificity of this new B...
March 31, 2017: Poultry Science
https://www.readbyqxmd.com/read/28331163/in-vitro-evaluation-of-candidate-bacillus-spp-for-animal-feed
#11
Sirima Mingmongkolchai, Watanalai Panbangred
The aim of this study was to select aerobic spore-formers for animal feed based on their in vitro probiotic potential, including their enzyme-producing ability and safety assessment. Seven isolates out of 187 spore-forming bacteria were selected for their ability to produce cellulase (89.21-1668.32 U/ml), xylanase (1399.68-4351.10 U/ml), and phytase (2.72-28.70 U/ml). Among seven isolates, five had activities towards a broad range of p-nitrophenyl esters with acyl chain lengths from C2 to C12. The probiotic properties of all selected isolates varied with respect to their acid and bile salt tolerance under simulated gastrointestinal tract (GIT) conditions, and their adherence ability to human intestinal cell lines (Caco-2 and HT-29)...
March 22, 2017: Journal of General and Applied Microbiology
https://www.readbyqxmd.com/read/28330328/optimization-of-phytase-production-from-potato-waste-using-aspergillus-ficuum
#12
Mengmeng Tian, Qiuyan Yuan
Solid-state fermentation (SSF) can divert food waste from landfills and produce high-value products. This study was aimed to investigate the feasibility of using SSF and optimize the conditions of production of phytase by Aspergillus ficuum from potato waste. Different parameters including pH of the potato waste, inoculum level, moisture content, incubation period, temperature, and supplementary nitrogen and carbon sources were evaluated. The results indicated that pH, inoculum level, and moisture content did not significantly vary phytase production...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28330134/phytases-from-enterobacter-and-serratia-species-with-desirable-characteristics-for-food-and-feed-applications
#13
Harpreet Kaur Kalsi, Rajveer Singh, Harcharan Singh Dhaliwal, Vinod Kumar
Phytases are enzymes of great industrial importance with wide range of applications in animal and human nutrition. These catalyze the hydrolysis of phosphomonoester bonds in phytate, thereby releasing lower forms of myo-inositol phosphates and inorganic phosphate. Addition of phytase to plant-based foods can improve its nutritional value and increase mineral bioavailability by decreasing nutritional effect of phytate. In the present investigation, 43 phytase positive bacteria on PSM plates were isolated from different sources and characterized for phytase activity...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28321795/phytase-production-by-aspergillus-niger-ncim-563-for-a-novel-application-to-degrade-organophosphorus-pesticides
#14
Parin C Shah, V Ravi Kumar, Syed G Dastager, Jayant M Khire
The production of phytase using Aspergillus niger NCIM 563 under submerged fermentation conditions was studied using protein rich chickpea flour as substrate. Employing a hybrid statistical media optimization strategy of Plackett-Burman and Box-Behnken experimental designs in shake-flasks gave an increased phytase activity from an initial 66 IU/mL in 216 h to 160 IU/mL in a reduced time of 132 h. Productivity, thus increased by 3.97 times from 7.3 to 29 IU/mL/day. Using the optimized media, the production was successfully scaled-up further and improved up to 164 IU/mL in 96 h by studies carried out employing 2 and 10-L fermenters...
December 2017: AMB Express
https://www.readbyqxmd.com/read/28318577/effect-of-dietary-mineral-phosphorus-and-phytate-on-in-situ-ruminal-phytate-disappearance-from-different-concentrates-in-dairy-cows
#15
E Haese, J Möhring, H Steingass, M Schollenberger, M Rodehutscord
The first objective of this study was to determine the influence of dietary composition on the in situ disappearance of phytate (InsP6) from wheat, corn, soybean meal, and rapeseed meal [solvent-extracted, without (RSM) or with (hRSM) heat treatment] in the rumen of dairy cows. The second objective was to assess the primary degradation products of InsP6 in the rumen. Three diets differing in phosphorus and InsP6 concentration (basal diet = 0.38% P in dry matter; high-P diet = 0.56% P; high-InsP6 diet = 0.39% P) were fed to 3 ruminally fistulated lactating Jersey cows in a 3 × 3 Latin square...
May 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28318476/p-and-ca-digestibility-is-increased-in-broiler-diets-supplemented-with-the-high-phytase-highphy-wheat
#16
D Scholey, E Burton, N Morgan, C Sanni, C K Madsen, G Dionisio, H Brinch-Pedersen
Around 70% of total seed phosphorus is represented by phytate which must be hydrolysed to be bioavailable in non-ruminant diets. The limited endogenous phytase activity in non-ruminant animals make it common practice to add an exogenous phytase source to most poultry and pig feeds. The mature grain phytase activity (MGPA) of cereal seeds provides a route for the seeds themselves to contribute to phytate digestion, but MGPA varies considerably between species and most varieties in current use make negligible contributions...
March 20, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28298279/the-potential-impact-of-animal-science-research-on-global-maternal-and-child-nutrition-and-health-a-landscape-review
#17
REVIEW
Jack Odle, Sheila K Jacobi, R Dean Boyd, Dale E Bauman, Russell V Anthony, Fuller W Bazer, Adam L Lock, Andrew C Serazin
High among the challenges facing mankind as the world population rapidly expands toward 9 billion people by 2050 is the technological development and implementation of sustainable agriculture and food systems to supply abundant and wholesome nutrition. In many low-income societies, women and children are the most vulnerable to food insecurity, and it is unequivocal that quality nutrition during the first 1000 d of life postconception can be transformative in establishing a robust, lifelong developmental trajectory...
March 2017: Advances in Nutrition
https://www.readbyqxmd.com/read/28277796/effect-of-diet-phase-change-dietary-ca-and-p-level-and-phytase-on-bird-performance-and-real-time-gizzard-ph-measurements
#18
S A Lee, J Dunne, T Mottram, M R Bedford
In the current study, a novel capsule technique was used to capture real-time pH readings from the gizzard over several hours, in response to different dietary treatments. The first experiment was a preliminary study into capsule administration and pH recordings using 9 male Ross 308 broilers from 20 d. In the second experiment, broilers (576) were fed in 2 phases (0-21 d and 21-42 d) with 4 treatment groups; low and adequate Ca and AvP diets with and without Quantum Blue phytase (1500 FTU/kg). Capsules were administered to 8 birds from each treatment group, pre and post diet phase change, with readings captured over a 2...
February 15, 2017: British Poultry Science
https://www.readbyqxmd.com/read/28265700/starch-biorefinery-enzymes
#19
Albrecht Läufer
Nature uses enzymes to build and convert biomass; mankind uses the same enzymes and produces them on a large scale to make optimum use of biomass in biorefineries. Bacterial α-amylases and fungal glucoamylases have been the workhorses of starch biorefineries for many decades. Pullulanases were introduced in the 1980s. Proteases, cellulases, hemicellulases, and phytases have been on the market for a few years as process aids, improving yields, performance, and costs. Detailed studies of the complex chemical structures of biomass and of the physicochemical limitations of industrial biorefineries have led enzyme developers to produce novel tailor-made solutions for improving yield and profitability in the industry...
March 7, 2017: Advances in Biochemical Engineering/biotechnology
https://www.readbyqxmd.com/read/28248011/a-novel-extracellular-low-temperature-active-phytase-from-bacillus-aryabhattai-rs1-with-potential-application-in-plant-growth
#20
Authors Moushree Pal Roy, Subhabrata Datta, Shilpi Ghosh
Bacillus aryabhattai RS1 isolated from rhizosphere produced an extracellular, low temperature active phytase. The cultural conditions for enzyme production were optimized to obtain 35 U ml(-1) of activity. Purified phytase had specific activity and molecular weight of 72.97 U mg(-1) and ∼40 kDa, respectively. The enzyme was optimally active at pH 6.5 and 40°C and was highly specific to phytate. It exhibited higher catalytic activity at low temperature, retaining over 40% activity at 10°C. Phytase was more thermostable in presence of Ca(2+) ion and retained 100% residual activity on pre-incubation at 20-50°C for 30 min...
March 1, 2017: Biotechnology Progress
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