• Title/Summary/Keyword: laying performance

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Influence of Ligustrum lucidum and Schisandra chinensis Fruits on Antioxidative Metabolism and Immunological Parameters of Layer Chicks

  • Ma, Deying;Liu, Yuqin;Liu, Shengwang;Li, Qundao;Shan, Anshan
    • Asian-Australasian Journal of Animal Sciences
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    • v.20 no.9
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    • pp.1438-1443
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    • 2007
  • The experiment was conducted to evaluate the effects of Ligustrum lucidum (LL) and Schisandra chinensis (SC) on the growth, antioxidative metabolism and immunity of laying strain male chicks. The results showed that diets supplemented with 1% of either LL or SC had no effects on the growth performance of chicks compared with the control. Furthermore, both LL and SC significantly reduced malondialdehyde (MDA) concentration of serum and heart of chicks (p<0.05). In addition, superoxide dismutase (SOD) activity of serum of the birds was significantly elevated by supplementation with SC (p<0.05). Glutathione reductase (GR) activity of heart and serum of the birds was significantly elevated by supplementation with LL or SC (p<0.05). LL supplementation significantly elevated antibody values against Newcastle Disease virus (NDV)(p<0.05) and lymphoblastogenesis (p<0.05) of the birds. The results suggest that diets supplemented with 1% of either LL or SC may improve immune function and antioxidant status of chicks.

A Study on the good use of Construction Management Model based on BIM (CM(ConstructionManagement)에의 효율적 BIM활용에 관한 연구)

  • Min, Young-Gi;Kim, Kyung-Jun
    • Journal of The Korean Digital Architecture Interior Association
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    • v.10 no.3
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    • pp.87-95
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    • 2010
  • The CM(Construction Manager) of D-university has been seeking the advice of my BIM-team to adopt CM(Construction Management) and BIM best practices to improve project delivery results, and has authored best practice reports for spatial validation, BIM, 3D, 4D and 5D performance. Building Information Modeling(BIM) Process, Integration, and Adoption looks at BIM implementation from a company and project level laying out a process for companies to use BIM. Following this studies, participants will be able to: 1. BIM participants has been creating a BIM process diagram for a project, and has been evaluating and selecting process options for a specific BIM project. 2. BIM participants has been describing the roles and responsibilities of participants in the BIM process, and has been communicating the BIM process to management, colleagues, and project stakeholders. 3. BIM participants has been identified consistent factors influencing BIM return on investment at the project level and the company level, and has been outlining a process for BIM adoption on the project level and company level.

EFFECTS OF CHOICE FEEDING ON THE PERFORMANCE OF VILLAGE CHICKEN AFTER THE PEAK OF EGG PRODUCTION

  • Ramlah, A.H.;Mohd-Husni, H.;Sarinah, A.H.
    • Asian-Australasian Journal of Animal Sciences
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    • v.7 no.3
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    • pp.317-320
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    • 1994
  • An experiment was carried out with village chicken at the laying stage raised on the semi-intensive system on three feeding treatments with each of 30 birds replicated three times. The three feeding treatments were: layer mash only, layer mash and corn as choices and choices of a high protein concentrate and corn. Feed and protein intake was significantly higher for birds on the layer mash and lower for birds on the choices of a high protein and corn diet. There was no differences in egg production for the birds fed the layer mash either alone or a choice with corn but lower for the birds on the choices of a high protein feed and corn. There was no differences in egg weight and gross efficiency for all treatments. The practice of choice feeding layer mash and corn could be adopted by farmers rearing village chicken under the semi-intensive system due to the lower cost.

A Combination and Calibration of Multi-Model Ensemble of PyeongChang Area Using Ensemble Model Output Statistics (Ensemble Model Output Statistics를 이용한 평창지역 다중 모델 앙상블 결합 및 보정)

  • Hwang, Yuseon;Kim, Chansoo
    • Atmosphere
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    • v.28 no.3
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    • pp.247-261
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    • 2018
  • The objective of this paper is to compare probabilistic temperature forecasts from different regional and global ensemble prediction systems over PyeongChang area. A statistical post-processing method is used to take into account combination and calibration of forecasts from different numerical prediction systems, laying greater weight on ensemble model that exhibits the best performance. Observations for temperature were obtained from the 30 stations in PyeongChang and three different ensemble forecasts derived from the European Centre for Medium-Range Weather Forecasts, Ensemble Prediction System for Global and Limited Area Ensemble Prediction System that were obtained between 1 May 2014 and 18 March 2017. Prior to applying to the post-processing methods, reliability analysis was conducted to identify the statistical consistency of ensemble forecasts and corresponding observations. Then, ensemble model output statistics and bias-corrected methods were applied to each raw ensemble model and then proposed weighted combination of ensembles. The results showed that the proposed methods provide improved performances than raw ensemble mean. In particular, multi-model forecast based on ensemble model output statistics was superior to the bias-corrected forecast in terms of deterministic prediction.

우모를 이용한 taurine 강화 계란 생산

  • 이승민;임희석;백인기
    • Proceedings of the Korea Society of Poultry Science Conference
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    • 2003.11a
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    • pp.119-120
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    • 2003
  • The experiments were conducted to investigate the effects of supplementary feather meal(FM) and its digest on the taurine content and performance of laying hens. Feeding trial was conducted with 810 78-wk-old ISA-Brown layers for 5wk. The experiment consisted of nine dietary treatments ; T1 ; control(basal diet), T2;Tl + feather meal(FM) 6 % diet, T3;T2 + pyridoxin(21 mg/kg) supplemented diet, T4; T1 + H$_2$O$_2$treated FM 6%, T5; T4 + pyridoxin(21 mg/kg) supplemented diet, T6; T1 + cystine(0.25 %) supplemented diet, T7; T6 + pyridoxin(21 mg/kg) supplemented diet, T8; T1 + synthetic taurine supplemented(0.25%) diet, T9; T1 + synthetic taurine supplemented(0.5 %) diet. Diets were formulated to be iso-caloric and to meet NRC(1994) requirements of essential nutriente. Birds in treatments T3 showed significantly higher(P<0.01) egg production, feed intake, feed conversion ratio, egg weight, haugh unit and eggshell strength than those fed other treatments. Supplementation of FM. H$_2$O$_2$treated FM and cystine with or without pyridoxin did not significantly affected taurine content of egg yolk. Only synthetic taurine supplemented diets(T8 and T9) linearly increased(P<0.01) taurine content of egg yolk.

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An Experimental Study on the Bond Splitting Strength between Composite Concrete and Deformed rebar (복합콘크리트와 이형 철근간의 부착강도에 관한 실험적 연구)

  • Yoon, Seung-Joe;Ho, SeungWoung
    • Journal of the Regional Association of Architectural Institute of Korea
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    • v.21 no.3
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    • pp.87-92
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    • 2019
  • To relieve noise between floors in Korea, recent domestic and overseas studies have been developing materials that have the properties of ceramic, which is an inorganic compound, and polymer, which is an organic compound, to introduce a new function to polymer. This study conducted a bending strength experiment between re-bar and new composite concrete mixing POSS (Polyhedral Oligomeric Silses-quioxanes) nano complex on the inside of concrete, and by assembling the inside of each concrete with 3 and 4 main re-bars as an experiment to supplement various problems that occur by the expression of this strength and the distribution of the reinforcement. The number of the main re-bars. and the direction of laying the concrete were applied as the principal variables of the experiment. Upon experiment, there were no differences in the bond strength based on the location of the main re-bar, and a 2 % increase in the bond strength was shown in the specimen laid in the same direction as the main re-bar in comparison to that of the specimen laid in a different direction from the main re-bar. The experiment results displayed that the composite concrete had uniform performance based on the rapid reaction speed of POSS nano complex.

A Study on the Effect of PMO Capability and Organization Justice on IT Project Performance (PMO의 역량과 조직공정성이 IT 프로젝트 성과에 미치는 영향에 관한 연구)

  • Kim, Ki-Hyun;Park, Geun-Wan;Hwang, Seung-June
    • The Journal of Society for e-Business Studies
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    • v.21 no.3
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    • pp.129-151
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    • 2016
  • The objective of this study is to examine the relationship of organizational justice, project performance and internal and external PMO (Project Management Office) capability by conducting survey of IT project participants worked with PMO. This study was the first case which classifies PMO capability into internal and external by ownership of PMO. PLS-SEM analysis, which used for this study shows internal PMO capability connects with distributive justice and procedural justice, and directly related to project performance. By comparison, external PMO capability has relationship only with procedural justice, but never related to project performance. Furthermore, distributive justice and procedural Justice all have correlation with project performance. In general, capability of external professional consulting firms is utilized for the fairness and objectivity in spite of sufficient internal project management capability. However, the internal PMO capability has greater influence on procedural justice than external's (internal PMO capability > external PMO capability). Also, distributive justice and project performance have direct correlation only with the internal PMO capability. This paper will be an indicator of finding human capabilities which are necessary for internal and external PMO performance, and has great significance of laying a groundwork of project management strategy by PMO.

Influence of Dietary Activated Coconut Charcoal on Egg Quality and Plasma Cholesterol Level in Laying Hens (산란계에서 활성야자탄의 첨가가 계란의 품질 및 혈장 콜레스테롤 함량에 미치는 영향)

  • 민병준;김인호;이원백;홍종욱;김지훈;권오석;이상환
    • Korean Journal of Poultry Science
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    • v.29 no.1
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    • pp.13-18
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    • 2002
  • This study was conducted to investigate the effects of dietary activated coconut charcoal (ACC) on Performance, e99 quality and Plasma cholesterol level of Plasma in laying hens. One hundred forty four, 47-wk-old, ISA Brown commercial layers were used in a 28-d feeding trial after a 7-d adjustment Period. Four dietary treatments were 0, 0.5, 1.0 and 1.5e% levees of ACC supplemented to a corn-soybean meal basal diet. Egg Production was significantly increased as the levels of ACC increased. However, egg weight was significantly decreased by the addition of ACC in diets. Egg shell breaking strength tended to decrease as the level of ACC increased, however, no significance was found in this respect. As the levels of ACC increased, egg shell thickness decreased significantly. Although not significant, yolk color tended to increase by the addition of ACC. Egg folk index were significantly increased by the addition of ACC In diet. No significant difference was found among four treatments in total cholesterol, HDL cholesterol, and LDL+VLDL cholesterol concentrations in plasma. In conclusion, dietary supplementation of ACC to layer diets could be used to increase egg Production, and yolk index.

Effects of Dietary Protein and Energy Levels on Egg Production and Egg Weight of Laying Hens (산란계 사료의 에너지와 단백질 수준이 산란율과 란중에 미치는 영향)

  • 이을연;최진호
    • Korean Journal of Poultry Science
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    • v.14 no.1
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    • pp.1-8
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    • 1987
  • Three experiments were conducted to investigate effects of dietary energy and protein levels on performance of laying hens. A total of 360 hens each of 352-day old Manina Brown (Exp.1), 280-day old Brown Warren (Exp.2) or 3174ay old Brown Warren (Exp.3) was divided into 20 pens of 18 birds. Each pen was assigned to one of the four dietary treatments with 5 replications according to a 2${\times}$2 factorial design, consisting of all possible cominations of two levels of metabolizable energy (2,500 and 2,800 kcal/kg of diet) and two levels of crude Protein (13 and 16%). All hens were housed two birds per cage. Exp.1 and 2 were conducted for four weeks and hens were fed experimental diets ad libitum, and Exp.3 lasted two weeks and feed consumption was restricted to 130g/hen/day. In Exp.1 and 2, increasing either energy or protein level in the diet numberically improved egg production. However, in Exp. 3, where feed consumption was restricted, egg Production was affected significantly 〈0.05) by the energy levies and numerically by the protein levels. Neither protein nor energy level influenced egg weight in Exp. 1 and 2, but in Exp. 3 the higher level of energy improved egg weight numerically, In all three experiments increasing either protein or energy level increased egg mass. Higher levels of either protein and energy tended to decrease feed consumption and improve feed conversion rate numerically. It should also be noted that the higher level of energy improved egg mass produced per unit intake of protein and the higher level of Protein improved egg mass produced per unit intake of energy.

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Feeding a Diet with Precise Lysine Level improved Laying Performance and Feed Efficiency of Broiler Breeder Hens at the Early Laying Stage

  • Kim, Eunjoo;Rew, Han-Jin;Wickramasuriya, Samiru Sudharaka;Lee, Soo Kee;Shin, Taeg Kyun;Cho, Hyun Min;Heo, Jung Min
    • Korean Journal of Poultry Science
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    • v.44 no.4
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    • pp.245-251
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    • 2017
  • A dose-response experiment was conducted to determine the lysine requirement for broiler breeder hens during pre-peak production. Totally, one hundred and twenty-six flock 23-week-old Ross 308 broiler breeder hens with similar body weight were selected ($2,188{\pm}32g$) for a 6-week experiment. Hens were fed with a basal diet of corn-wheat-soybean meal formulated to achieve the Ross 308 breeder nutrient specifications (2016), except for lysine. The 7 graded, daily lysine intake levels used in this experiment were 732, 785, 838, 891, 944, 997, and 1,050 mg, and hens were restricted to 133 g of feed throughout this experiment. Pen based egg production were recorded once a day and all eggs were weighed daily. Age at sexual maturity was determined when the hens attained age at 25% production. Body weight at 23~29 weeks of age was not affected (P>0.05) by lysine levels. By fitting a linear-plateau model, the daily lysine requirements for feed conversion ratio, total produced egg weight, and age at sexual maturity at 23~29 weeks of age were estimated as 865, 907, and 891 mg, respectively. Using a quadratic-plateau model, the daily lysine requirement at 23~29 weeks of age were estimated as 974, 964, and 950 mg for feed conversion ratio, total produced egg weight, and age at sexual maturity, respectively. These results suggested that the daily lysine requirement for modern broiler breeder hens according to the National Research Council (1994) are insufficient for higher total produced egg weight, sexual maturity, and feed efficiency, and 120% of the NRC recommendation level would improve hen productivity when data are fitted under linear- and quadratic-plateau models.