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Benefit Cost Analysis of Automatic Eggshell Crack Detection System (계란 실시간 자동 파각란 검사시스템의 비용 편익분석)

  • Lin, Qing-Long;Yeo, Jun-Ho
    • Current Research on Agriculture and Life Sciences
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    • v.32 no.4
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    • pp.231-235
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    • 2014
  • This study performed a benefit cost analysis of an automatic eggshell crack detection system. Based on various cost benefit analysis methods, including the net present value (NPV), internal rate of return (IRR), and benefit cost ratio (B/C Ratio), the automatic eggshell crack detection system was confirmed to have economic validity. The NPVs were 175,035,645 won at a 5% discount rate and 129,082,393 won at a 10% discount rate. Plus, the IRRs were 0.686 at a 5% discount rate and 0.660 at a 10% discount rate. Finally, the B/C ratios were 1.981 at a 5% discount rate and 1.900 at a 10% discount rate.

Effects of different methionine sources on production and reproduction performance, egg quality and serum biochemical indices of broiler breeders

  • Xiao, Xue;Wang, Yongxia;Liu, Weilong;Ju, Tingting;Zhan, Xiuan
    • Asian-Australasian Journal of Animal Sciences
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    • v.30 no.6
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    • pp.828-833
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    • 2017
  • Objective: The study was conducted to evaluate the effects of different methionine (Met) sources on production performance, reproduction performance, egg quality and serum biochemical indices in broiler breeders. Methods: After receiving a basal diet (containing 0.25% Met) for a 2-wk pretreatment period, a total of 360 39-wk-old Lingnan yellow broiler breeders were randomly allocated to four treatments with six replicates each (15 birds per replicate). Breeders were fed with basal diets (control) or diets supplemented with DL-methionine (DLM), DL-2-hydroxy-4-methylthio butytric calcium (MHA-Ca) and coated DL-Met (CME) respectively. Results: The results showed that CME supplementation promoted laying rate and decreased feed-to-egg ratio (F/E) (p<0.05), DLM and MHA-Ca supplementation decreased F/E (p<0.05) when compared with control group. The rate of fertility, hatchability and birthrate were higher (p<0.05) in DLM, MHA-Ca, and CME groups than control group. Compared with control group, CME increased the eggshell thickness (p<0.05); MHA-Ca improved the eggshell thickness, shell ratio and eggshell strength (p<0.05). Results also showed that CME elevated the concentration of total protein in serum (p<0.05); MHA-Ca improved the concentration of calcium in serum (p<0.05). The concentration of serum uric acid in DLM, MHA-Ca, and CME groups was lower than that in control group (p<0.05). Besides, CME had higher concentrations of serum taurine, cysteine and cystanthionine (p<0.05) while MHA-Ca and DLM promoted the serum taurine concentration (p<0.05) compared with control group. Conclusion: Based on the results, it was concluded that Met supplementation could enhance the production and reproduction performance as well as the antioxidant status and egg quality of broiler breeders. In terms of improving the production performance, reproduction performance and antioxidant performance, CME was superior to DLM and MHA-Ca; but in regard to the enhancement of eggshell quality and serum Ca concentration, MHA-Ca was superior to DLM and CME.

Hydroxyapatite prepared from eggshell and mulberry leaf extract by precipitation method

  • Wu, Shih-Ching;Hsu, Hsueh-Chuan;Hsu, Shih-Kuang;Liu, Mei-Yi;Ho, Wen-Fu
    • Biomaterials and Biomechanics in Bioengineering
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    • v.4 no.1
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    • pp.21-32
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    • 2019
  • Eggshell is a waste material after the usage of egg. In this work, biowaste chicken eggshells were used for preparing carbonated hydroxyapatite (HA) nanoparticles of high purity through aqueous precipitation method at room temperature. The eggshell-derived HA will be a cost-effective bioceramics for biomedical applications and an effective material-recycling technology. Additionally, mulberry leaf extract was used as a template to regulate the morphology, size and crystallinity of HA, and the effects of pH value were also examined. Characterization of the samples was performed by X-ray diffraction (XRD) and Fourier transform infrared (FT-IR) spectroscopy. Scanning electron microscopy (SEM) was used to determine the size, shape and morphology of HA. The results indicate that only one phase of HA were synthesized in the both absence and presence of mulberry leaf extract at pH of 7 and above, while DCPD or DCPA/DCPD phase was observed at pH 4 condition. The crystallite sizes of the HA samples obviously decreased when adding mulberry leaf extract as a template, while they decreased gradually as the solution pH levels increased. With increasing pH level from 7 to 14, the rod-like HA nanoparticles gradually changed to spherical shape at pH 14. Note that, the obtained product is Mg and Sr containing A- and B-type carbonate HA at alkaline pH and it can be a potential material for biomedical applications.

Effect of natural mineral complex on egg quality, egg production and hatchability in laying hens during the summer season

  • Oh, Han Jin;Cho, Jin Ho;Lee, Young;Yu, Sung beom;Lee, Jung Joo;Cho, Seong Koo
    • Korean Journal of Agricultural Science
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    • v.45 no.2
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    • pp.229-237
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    • 2018
  • This study was conducted to investigate the effect of natural mineral complex fed to laying hens during the summer in terms of the egg quality. A total of 480 laying hens (160 leghorns, 160 Korean native chickens and 160 silkies, all 62 weeks old), were used for 4 weeks. The four dietary treatments were as follows: CON) basal diet; MC1) CON + 0.1% natural mineral complex (NMC); NMC3) CON + 0.3% NMC, and NMC5) CON + 0.5% NMC. In terms of egg weight, the NMC3 and NMC5 treatments had significantly higher egg weights than that of the CON (p < 0.001) in all species. Eggshell strength in the NMC3 and NMC5 treatments was significantly higher than that of the CON in the leghorns on 2 week (p < 0.01). In the Korean native chickens, the eggshell strength for the NMC1, NMC3 and NMC5 treatments was significantly higher than that of the CON during all periods. In 4 week, the eggshell strength for the CON and NMC1 treatment was significantly higher in the leghorns (p < 0.001), but the MC treatments had a significantly higher eggshell strength than that of the CON in Korean native chickens. Egg production was significantly improved in all the treatments compared to the NMC3 treatment (p < 0.05), and hatchability was also improved compared to the CON (p < 0.05). In conclusion, supplementation of natural mineral complex in chicken diets influenced the egg quality during the summer season.

Effects of Lotus (Nelumbo nucifera) Leaf Hot Water Extracts on the Quality and Stability of Eggs using Ultrasonication Treatment during Storage

  • Lee, Jihye;Seo, Han Geuk;Lee, Chi-Ho
    • Food Science of Animal Resources
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    • v.40 no.6
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    • pp.1044-1054
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    • 2020
  • This study was performed to investigate the effects of lotus leaf hot water extracts treatment on the quality and stability of eggs using impregnation treatment through ultrasonication during storage. A total of 480 eggs were categorized into four treatment groups (n=30 each)-non-treated (CON), soaked for 30 min in lotus leaf hot water extracts without ultrasonication (T1), sonicated in distilled water (T2), and sonicated in lotus leaf hot water extracts (T3)-and stored for 15 d at 30℃. The egg weight, Haugh unit (HU), egg grade, albumen height, yolk color, eggshell thickness, eggshell breaking strength, and weight loss were measured for egg quality assessment. 2-Thiobarbituric acid reactive substance (TBARS) and volatile basic nitrogen (VBN) contents were measured as stability indicators. Additionally, total phenolic contents (TPC), total flavonoid contents (TFC), and 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity were evaluated. The HU, egg grade, albumen height, and yolk color of T3 were significantly higher than those of CON (p<0.05). No significant differences in eggshell thickness and eggshell breaking strength are observed among the groups. The weight loss of T3 was significantly lower than that of the other groups during storage (p<0.05). The application of lotus leaf hot water extracts also significantly reduced TBARS and VBN (p<0.05). The TPC, TFC, and DPPH radical scavenging activity of T3 were significantly higher than those of the other groups (p<0.05). These results suggest that lotus leaf hot water extracts may be useful as a natural ingredient for improving the quality and stability of eggs during storage.

Comparisons between Two Different Eggshell Lines on Egg Traits and Egg Production Rate in Layers (계란의 형질들 및 산란율에 대한 난각색이 다른 두 계통간의 비교 연구)

  • 석윤오
    • Korean Journal of Poultry Science
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    • v.29 no.3
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    • pp.151-156
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    • 2002
  • The objective of this study was to compare the two different eggshell lines of commercial layers on egg traits and egg production rate. Hy-line W-98 (white shell line; WSL) and Hy-line Brown (brown shell line; BSL) were used as experimental stocks. The birds in each line were allocated to three floor pens each containing 25-birds. They were fed a ration containing 15.5% CP and 2,700 ㎉/kg ME, and were supplied 16 h of light per day throughout the experimental Periods. The egg traits and egg Production rate were measured from 53 to 56-wk-old and 20 to 56-wk-old, respectively. The mean egg weight and the mean percentage albumen were significantly heavier and higher (P<0.05) in the BSL than in the WSL, respectively. The mean eggshell thickness and the mean percentage shell were also significantly thicker and higher (P<0.05) in the BSL than those in the WSL, respectively. However, the mean percentage yolk and the yolk to albumen ratio showed a reverse trend as shown in the mean percentage albumen or percentage eggshell. Although the WSL birds started laying 4 d earlier than the BSL ones, the overall mean egg Production rate for BSL during 20 to 56 wk of age was significantly higher (P<0.05) by 6.6% than the WSL. It was concluded that the eggs of brown eggshell line had heavier egg weight and thicker shell, and they had more percentage of albumen, but less percentage of yolk than those of the white eggshell line. These results suggest that the brown eggshell line raised on the floor might be more beneficial than the white eggshell line not only for the preference of the table egg consumers, but also for the efficient production of the eggs.

Egg Quality Traits and Their Correlations in 12 Strains of Korean Native Chicken (토종닭 12계통 난질의 일반능력 및 상관관계 분석)

  • Kim, Kigon;Kwon, Il;Choo, Hyojun;Park, Byoungho;Cha, Jaebeom
    • Korean Journal of Poultry Science
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    • v.47 no.3
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    • pp.181-188
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    • 2020
  • In this study, sixteen egg quality traits, including egg weight, albumen weight, yolk weight, eggshell weight, albumen weight ratio, yolk weight ratio, eggshell weight ratio, yolk color, eggshell color, egg height, egg width, shape index, albumen height, Haugh unit, eggshell thickness, and eggshell strength were investigated in 12 strains of Korean native chicken using 600 eggs from birds at 38 weeks of age. Results showed that the Korean White Leghorn F strain had the highest egg weight of 62.7 g and the lowest (47.5 g) was observed in the Korean native chicken W strain. The Haugh unit was significantly different between strains. The mean Haugh unit for Korean native chicken ranged between 84.2 (L strain) and 76.0 (F strain), with an overall average of 79.9. Eggshells were the thinnest in Korean Rhode Island Red C and D strains (0.342 mm), whereas the highest eggshell thickness (0.393 mm) was observed in the Korean White Leghorn K strain. Korean Rhode Island Red C and D strains had low egg strength compared to that of other strains. Korean Cornish and Korean native chicken showed significant differences in egg quality traits between strains within breeds. Positive correlation coefficients were observed between egg weight and egg quality traits. The traits for color showed zero or low correlations with most egg quality traits. Egg shape index showed no correlation with most egg quality traits. Albumen height and the Haugh unit showed a positive correlation with albumen traits. Eggshell strength showed a positive correlation with eggshell traits.

Effects of Age and Lines on Blood Parameters in Laying Tsaiya Ducks

  • Lee, S.R.;Shen, T.F.;Jiang, Y.N.
    • Asian-Australasian Journal of Animal Sciences
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    • v.17 no.7
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    • pp.984-989
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    • 2004
  • Three hundred and twelve female Tsaiya ducks from four lines (L1051, L1052, L1053 and L1054) were used in this study to investigate the changes in plasma calcium and inorganic phosphorus levels, blood pH, carbon dioxide partial pressure (pCO$_{2}$), bicarbonate ion concentration ($HCO_{3}^{-}$), and base excess (BE) during laying periods. The results indicated that plasma calcium and inorganic phosphorus concentration at 40 and 50 wks of age were higher (p<0.05) than those at other ages. Significant positive correlation coefficients were found between plasma calcium and inorganic phosphorus levels at each age tested from 20 to 50 wks. Ducks from L1053 showed lower (p<0.05) blood pH, BE and $HCO_{3}^{-}$ as compared with other lines. Ducks from L1054 had higher (p<0.05) blood pH, BE and $HCO_{3}^{-}$ than those of other lines showing that there were some differences on blood parameters among lines. Eggshell strength decreased with age up to 65 wks and remained constant thereafter. Egg weight increased gradually from 30 to 60 wks and decreased slightly after 70 wks of age. Plasma inorganic phosphorus level in 40 and 50 wks old birds was positively correlated with eggshell strength, while blood $HCO_{3}^{-}$ in 40 and 50 wks old birds was negatively correlated with eggshell strength.

Effects of Water-Soluble Calcium Supplements Made from Eggshells and Oyster Shells on the Calcium Metabolism of Growing Rats

  • Jang, Se-Young;Jeong, Yong-Jin;Kwon, Taeg-Kyu;Seo, Ji-Hyung
    • Preventive Nutrition and Food Science
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    • v.15 no.1
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    • pp.78-82
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    • 2010
  • This study investigated the effects of water-soluble calcium supplements manufactured with eggshells and oyster shells on growing rats. The aim was to review the potential use of food wastes as materials for water-soluble calcium supplements as compared to water-soluble calcium supplements made from imported seaweed powder. When experimental animals were administered three types of water-soluble calcium supplements orally for six weeks, the serum calcium level of the seaweed calcium supplement group were significantly higher than that of eggshell or oyster shell-derived calcium, but blood alkali phosphatase activity, osteocalcin and urine crosslink levels were not different in the three types of calcium supplements. Bone mineral density and bone mineral content in spine, femur and tibia also were not significantly different among the groups. However, when considering body weight of each group, bone mineral density and bone mineral content of the femur were significantly higher in the oyster shell calcium supplement group. These results suggest that at least on a short-term basis, the effect of calcium supplements prepared from eggshell and oyster shell are similar to the effects of seaweed calcium supplements.

Production of Recombinant GG1234-DsRed Fusion Protein and Its Effect on in vitro CaCO3 Crystallization (재조합 GG1234-DsRed 융합 단백질의 생산 및 In vitro 탄산칼슘 결정화에 미치는 영향에 대한 연구)

  • Son, Chaeyeon;Kim, Jin Ho;Kim, Ji Ha;Choi, Yoo Seong
    • KSBB Journal
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    • v.30 no.6
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    • pp.296-301
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    • 2015
  • Eggshell-based biocomposites have become attractive due to their exquisite nanostructure and biological properties, which are mainly composed of highly organized calcium carbonate crystals controlled by organic macromolecules such as proteins and polysaccharides. Here, we designed the recombinant fusion protein of a putative eggshell matrix protein named as GG1234 and a fluorescent reporter protein of DsRed. The protein was successfully over-expressed in E. coli and purified by Ni-NTA affinity chromatography. In vitro calcium carbonate crystallization was conducted in the presence of the fusion protein, and morphological change was investigated. The protein inhibited the calcite growth in vitro, and spherical calcium carbonate micro-particles with the diameter of about $20-30{\mu}m$ were obtained. We expect that this study would be helpful for better understanding of eggshell-based biomineralization.