• Korean Journal of Poultry Science
• /
• v.34 no.3
• /
• pp.181-185
• /
• 2007

This study was conducted to evaluate the effects of dietary delta-aminolevulinic acid (ALA) on egg production and egg quality in laying hens. A total of 114 (30-wk age) ISA brown commercial hens were used in current trial for 28 days. Dietary treatments included 1) CON (basal diet), 2) 0.05 (basal diet + ALA 0.05%), 3) 0.1 (basal diet + ALA 0.1%) and 4) 0.2 (basal diet + ALA 0.2%). There were four dietary treatments with four replication per treatment and twelve laying hens per replication. During the overall period, egg production was quadratically affected (P=0.01) by ALA supplementation compared with control treatment. Egg weight increased (linear effect, P=0.01; quadratic effect, P=0.01) as the level of delta-aminolevulinic acid supplementation increased in the diets. Yolk color was increased quadratically (P=0.03). The difference of hemoglobin concentration was increased (quadratic effect, P=0.01) as the level of delta-aminolevulinic acid supplementation increased in the diets. In conclusion, the results of the experiment suggest that dietary delta-aminolevulinic acid could affect egg weight, yolk color and hemoglobin concentration in laying hens.

• Food Science of Animal Resources
• /
• v.28 no.3
• /
• pp.349-354
• /
• 2008

This study was conducted to evaluate the effects of a high protein diet containing barley on the growth performance and carcass characteristics of finishing pigs. A total of fifty six [(Landrace${\times}$Yorkshire${\times}$Duroc)] pigs (85.08 kg in average initial body weight) were used for a 6-week study. Dietary treatments included 1) Basal diet (CON) and 2) High protein diet with barley 5% (HB5). During the entire test periods, there were no significant differences in Average daily gain (ADG), Average daily feed intake (ADFI) and gain/feed ratio between treatments (p>0.05). The b value of M. logissimus dorsi muscle color was significantly increased in CON fed pigs compared to pigs fed the HB5 diet (p<0.05). The water holding capacity (WHC) was higher in HB5 than CON fed pigs (p<0.05). Also, drip loss was significantly decreased in HB5 compared to CON fed pigs (p<0.05). Backfat thickness, live weight, cold carcass weight, dressing, and carcass grade were not significantly affected by either treatment (p>0.05). In conclusion, the results of this study indicate that a high protein diet with 5% barley affects meat color, WHC and drip loss in finishing pigs.

• Korean Journal of Poultry Science
• /
• v.48 no.4
• /
• pp.319-325
• /
• 2021

In this study, we investigated the effects of feeding diets with different levels of energy and nutrient density on the egg quality of laying hens during the pre-peak and peak periods. A total of 192 (Hy-line brown) laying hens were used in a 15-week trial. The hens were randomly allotted to one of four treatments, each with four replicates (12 hens per replication). We assessed the effects of four level of dietary energy (2,710, 2,850, 2,870 and 2,890 kcal/kg) and three levels of nutrient density (Methionine + Cysteine: 0.56%, 0.85%, 0.80% and Crude Protein: 14.5%, 19%, 18%). Differences in the energy and nutrient density contents of diets showed no significant effect (P>0.05) on the average daily gain, average daily feed intake, feed conversion ratio, egg weight, or egg production of hens during the pre-peak and peak periods. However, hens subjected to 2,890 kcal/kg during the pre-peak period were found to lay eggs with significantly thicker shells, and yolk color was found to be significant enhanced in hens fed this diet during the pre-and peak periods. In contrast, we detected no significant effects of dietary energy or nutrient density on the Haugh unit or eggshell strength. In summary, increasing the energy level of diets from 2,710 to 2,890 kcal/kg was found to have positive effects on the shell thickness and yolk color of eggs produced by laying hens.

• Korean Journal of Poultry Science
• /
• v.32 no.3
• /
• pp.219-224
• /
• 2005

This study was carried out to investigate the effect of feldspar on laying Performance and e99 qualify in hens. A total of 96 'Tetra Brown' layers were assigned to 4 treatments in a completely randomized design. Each treatment consisted 4 replicates accommodating 6 layers per replication. Experiment diets were a control diet without feldspar and supplemented 0.5, 1.0 and $1.5\%$ feldspar. The egg Production rate was significantly increased in layers 134 diets supplemented 0.5 and $1.0\%$ feldspar compared to that of control (P<0.05). Egg weight, egg mass, feed intake, feed conversion ratio, egg shell strength and egg yolk color were not significantly different among the treatments (P>0.05). The haugh unit and blood spot of the eggs were significantly increased in $1.5\%$ feldspa. diets compared to that of control (p<0.05). However, the albumen index and meat spot in the eggs were not statistically different among treatments (P>0.05). Sensory evaluation traits were not significantly differed in terms of appearance, color, texture flavor and overall acceptability of eggs (P>0.05). The juiciness of boiled eggs was significantly increased in eggs of birds fed $1.0\%$ feldspar diets(P>0.05).

• Animal Systematics, Evolution and Diversity
• /
• v.30 no.2
• /
• pp.59-64
• /
• 2014

Three species of the genus Sciota Hulst, 1888 are recognized from Northeast China: Sciota cynicella (Christoph, 1881), Sciota fumella (Eversmann, 1844), and Sciota adelphella (Fischer von R$\ddot{o} $slerstamm, 1836), of which Sciota cynicella (Christoph, 1881) is reported for the first time from China. This species can be distinguished from congeners by the gray color of basal area, the straight antemedial line and the distinct postmedial line on the forewing; by the stout aedeagus in male genitalia. In this study, a key to Northeastern Chinese species of genus Sciota is presented, and the illustrations of adults and genitalia are also provided.

• Asian-Australasian Journal of Animal Sciences
• /
• v.14 no.3
• /
• pp.365-371
• /
• 2001

The effects of light exposure and light intensity on surface color of Hanwoo (Korean native cattle) beef and color stability of fresh normal and DFD (dark, firm, dry) muscles during 7 days at $4{\pm}1^{\circ}C$ under three display conditions (Dark, Light1000 and Light3000) were investigated. The $L^*$, $a^*$, $b^*$, $C^*$ values and R630-R580 were significantly (p<0.05) higher in normal beef than in DFD beef. The $a^*$, $b^*$, $c^*$ values and R630-R580 of normal beef increased during the first day of display except Light3000 group, then gradually decreased over time. The surfaces of Hanwoo beef accumulated more metmyoglobin in the light than in the dark. Also, the rate of decrease in redness during refrigerated storage was enhanced by light exposure and increase in light intensity. Discolorations were more rapid in DFD beef than normal beef. Increasing light intensity promoted not only discoloration but also lipid oxidation. Therefore storage in the dark is effective in retarding the formation of a brown color in Hanwoo beef.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
• /
• v.35 no.4
• /
• pp.303-312
• /
• 2017

This paper indirectly created high density point cloud data using unmanned aerial vehicle image. Then, we tried to suggest new concept of classification technique where particular objects from point cloud data can be selectively classified. For this, we established the classification technique that can be used as search factor in classifying color information in point cloud data. Then, using suggested classification technique, we implemented object classification and analyzed classification accuracy by relative comparison with self-created proof resource. As a result, the possibility of point cloud data classification was observable using the image's information. Furthermore, it was possible to classify particular object's point cloud data in high classification accuracy.

• Korean Journal of Remote Sensing
• /
• v.23 no.3
• /
• pp.171-179
• /
• 2007

Hyperspectral images have shown a great potential for the applications in resource management, agriculture, mineral exploration and environmental monitoring. However, due to the large volume of data, processing of hyperspectral images faces some difficulties. This paper introduces the development of an image processing tool (HYVIEW) that is particularly designed for handling hyperspectral image data. Current version of HYVIEW is dealing with efficient algorithms for displaying hyperspectral images, selecting bands to create color composites, and atmospheric correction. Three band-selection schemes for producing color composites are available based on three most popular indexes of OIF, SI and CI. HYVIEW can effectively demonstrate the differences in the results of the three schemes. For the atmospheric correction, HYVIEW utilizes a pre-calculated LUT by which the complex process of correcting atmospheric effects can be performed fast and efficiently.

• Journal of Animal Science and Technology
• /
• v.45 no.4
• /
• pp.641-648
• /
• 2003

In a batch mode treatment process, which electrolyzes the wastewater after derivation of N-P crystal formation and recovery, the characteristics of pollutant removal induced with the changes of loading rate and hydraulic retention time were studied. $MgCl_2$ was used as Mg source for the formation of struvite and the molar ratio of $MgCl_2$ to $PO_4^{3-}$ in influent was 1.3. When analyzing the average treatment efficiencies and removal characteristics obtained from four separate operations (Run I, II, III, IV), removal efficiencies of PO43- was not function of its loading rate. Under a condition of sufficient aeration and Mg source provided, over 88% of $PO_4^{3-}$ was eliminated by the formation of MAP without any pH adjustment, in spite of loading rate variation. An optimum-loading rate of NH4-N to achieve high removal efficiency was approximately $100g/m^3/d$. Below that loading rate, the removal of NH4-N was proportional to the loading rate into the system, and hence stable and high removal efficiency, over 90%, was achieved. However, when the loading rate increased over that rate, removal efficiency began to drop and fluctuate. Removal efficiency of TOCs was dependant upon the hydraulic retention time ($r^2$=0.97), not upon the loading rate. Stable and high color removal (94%) was obtained with 2 days of HRT in electrolysis reactor.

• Journal of Animal Science and Technology
• /
• v.50 no.1
• /
• pp.121-132
• /
• 2008

A total of 100 pigs were used to investigate the effects of pig breed on proximate, physicochemical, cholesterol, amino acid, fatty acid and sensory properties of loins. Crossbred pigs were alloted into one of five experimental groups [×Duroc(LYD), ×Berkshire (YBB), British Berkshire(BB), Kagoshima Berkshire(KB), Korean native black pig×Wild boars(KW; Sus coraanus)]. Pigs were slaughtered at 110 kg live weight. Moisture content was significantly(p<0.05) higher in KW than those of other pig breeds. Crude protein content was significantly(p<0.05) higher in YBB and KW than in LYD, BB, and KB. Cholesterol content was significantly(p<0.05) higher in YBB than those of other pig breeds. WHC and pH value had lower and shear force had higher(p<0.05) in YBB than those of other pig breeds. In color, LYD was significantly(p<0.05) higher in L* than those of other pig breeds. There was no significant different in a* and brittleness value among the breeds. In fatty acid and amino acid composition, KW had a higher(p<0.05) UFA/SFA, EFA/UFA ratio and EAA content but lower (p<0.05) SAAA. Total amino acid content was significantly(p<0.05) higher in LYD(20.44%) and BB (20.81%) than those of other pig breeds. In fresh meat, breeds affected meat color, drip loss, marbling score, and overall acceptability(p<0.05). Nevertheless, no significant differences were found among the breeds in the sensory parameters evaluated in the cooked meat, except for flavor