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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of Animal Science and Technology
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Journal DOI :
Korean Society of Animal Science and Technology
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Volume & Issues
Volume 50, Issue 6 - Dec 2008
Volume 50, Issue 5 - Oct 2008
Volume 50, Issue 4 - Aug 2008
Volume 50, Issue 3 - Jun 2008
Volume 50, Issue 2 - Apr 2008
Volume 50, Issue 1 - Feb 2008
Selecting the target year
Estimation of Genetic Parameters of Body Weights in Hanwoo Steers(Korean Cattle), Bos Taurus Coreanae Using Random Regression Model
Seo, Kang- Seok ; Salces, Agapita J. ; Yoon, Du- Hak ; Lee, Hong- Gu ; Kim, Sang- Hoon ; Choi, Te- Jeong ;
Journal of Animal Science and Technology, volume 50, issue 2, 2008, Pages 151~156
DOI : 10.5187/JAST.2008.50.2.151
The study aimed to estimate genetic parameters of body weights in Hanwoo steers using random regression model and compare it with single trait animal model. A total of 1,372 Hanwoo steers that belonged to progeny testing program of the Hanwoo Genetic Improvement conducted at the Livestock Improvement Main Center of the National Agricultural Cooperative Federation (LIMC-NACF) in Rep. of Korea were used. Results of the random regression model fitting quadratic function revealed heritability values from 0.17 to 0.30 for the whole testing days up to 800 days. The results of the animal model showed estimated heritability values ranged from 0.24 to 0.36. Estimates of permanent environmental correlations tended to increase with increasing test in days. Unlike in the direct genetic correlation that at early stage the estimate was slightly negative it was 0.30 then increased to approach unity at later stage of test. Comparing the results between random regression model and the animal model showed not much differences and both followed similar pattern and therefore the use of random regression model for the national genetic evaluation of Hanwoo could be implemented.
A Study on Genetic Parameters of Carcass Weight and Body Type Measurements in Hanwoo Steer
Koo, Yang-Mo ; Kim, Jung-Il ; Song, Chi-Eun ; Shin, Jae-Young ; Lee, Jae-Youn ; Lee, Jong-Heon ; Cho, Byoung-Dai ; Kim, Byeong-Woo ; Lee, Jung-Gyu ;
Journal of Animal Science and Technology, volume 50, issue 2, 2008, Pages 157~166
DOI : 10.5187/JAST.2008.50.2.157
Comparison for Genetic Diversity between Regional Hanwoo (Korean Cattle) Brand Group Using Microsatellite Loci
Lee, Ki-hwan ; Seo, Kang-Seok ; Choi, Te-Jeong ; Yun, Du-Hak ; Yang, Dae-Youg ; Sang, Byeong-Chan ;
Journal of Animal Science and Technology, volume 50, issue 2, 2008, Pages 167~176
DOI : 10.5187/JAST.2008.50.2.167
Procaryotic Expression of Porcine Acid-Labile Subunit of the 150-kDa Insulin-like Growth Factor Complex
Lee, C. Young ; Kang, Hye-Kyeong ; Moon, Yang-Soo ;
Journal of Animal Science and Technology, volume 50, issue 2, 2008, Pages 177~184
DOI : 10.5187/JAST.2008.50.2.177
Acid-labile subunit(ALS) is a 85-kDa glycosylated plasma protein which forms a 150-kDa ternary complex with 7.5-kDa insulin-like growth factor(IGF) and 40~45-kDa IGF-binding protein-3. In a previous study, the present authors prepared a porcine ALS(pALS) expression construct by inserting a pALS coding sequence into a plasmid vector following synthesis of the sequence by reverse transcription-polymerase chain reaction(RT-PCR). The expression construct, however, was subsequently found to have a mis-sense mutation at two bases of the pALS coding sequence which is presumed to have occurred through a PCR error. In the present study, the correct coding sequence was synthesized by the site-directed mutagenesis and inserted into the pET-28a(+) plasmid expression vector containing the His-tag sequence flanking the last codon of the insert DNA. After induction of the expression construct in E. coli BL21(DE3) cells, the resulting presumptive recombinant peptide was purified by the Ni-affinity chromatography. Upon SDS- PAGE, the affinity-purified peptide was resolved as a single band at a 66-kDa position which is consistent with the expected molecular mass of the presumptive recombinant pALS. Collectively, results indicate that a recombinant pALS peptide was successfully expressed and purified in the present study.
Dietary Brown Seaweed Modulates Nutrient Metabolism, Anti-oxidant System and Immune Response in Broiler Chicks Injected LPS i.p.
Park, In-Kyung ; Im, Jin-Taek ; Choi, Do-Yul ; Koh, Tae-Song ;
Journal of Animal Science and Technology, volume 50, issue 2, 2008, Pages 185~198
DOI : 10.5187/JAST.2008.50.2.185
Influences of dietary brown seaweed(BSW) on the nutrient metabolism, anti-oxidant enzyme activity and cell-mediated immune response were studied in broiler chicks activated acute phase response. 72 Hatched male broiler chicks(Ross) were divided into 12 pens, 6 heads per pen, and fed the BSW 0.0% (Basal) or 2.0% diet, respectively, and injected with the Salmonella typhimurium lipopoly saccharide(LPS) for activation of the acute phase response three times at 8, 10 and 12 d of age. During 4 wks of experimental feeding, growth performance of broiler chicks was not affected by dietary BSW and the acute phase response. Compared with control birds, the acute phase response did not affect the daily weight gain in birds fed BSW 2.0% diet, decreased nitrogen balance(NB) or metabolizable energy(ME) utilization per metabolic body size(kg0.75), and enhanced activities of peroxidase or extracellular SOD(EcSOD), tumor necrosis factor-alpha and ovotransferrin in plasma and MnSOD and CuZnSOD in erythrocyte cytosol. Compared to BSW 0.0% diet, 2.0% diet enhanced protein retention(NB) per kg0.75 regardless the acute phase response, did not affect uric acid nitrogen excretion(UAN) per kg0.75 in birds during the acute phase response, decreased(p<0.05) the UAN excretion per kg0.75 in control birds. And BSW 2.0% diet also decreased(p<0.05) plasma peroxide level and erythrocyte peroxidase or MnSOD activity but increased plasma peroxidase and EcSOD activity and interleukin-1 activity secreted from LPS-stimulated PBMC in 4 week broiler chicks.
Effects of Supplementation of Ruminally Protected Amino Acids on In vitro Ruminal Parameters and Milk Yield and Milk Composition of Dairy Cows in Mid-lactation
Lee, Jong-Min ; Nam, In-Sik ; Ahn, Jong-Ho ;
Journal of Animal Science and Technology, volume 50, issue 2, 2008, Pages 199~208
DOI : 10.5187/JAST.2008.50.2.199
This study was undertaken to investigate the effects of ruminally protected amino acids (Methionine and Lysine) on in vitro ruminal parameters, and in vivo milk yield and milk composition in mid-lactating cows. In the first in vitro experiment, there were no statistical significances between treatments in ruminal pH and dry matter digestibility during various incubation times. In the second in vivo experiment, milk yield decreased by 11.92% in control and 5.68% in the treatment respectively, but decrease rate of milk yield in the treatment was lower than control. Milk yields naturally decreased as time goes by since the DIMs(Days in milk) of the cows in experiment were in mid-lactation period. 4% FCM(Fat corrected milk) and milk protein yields also, respectively, decreased by 11.25% and 11.09% in control and 6.16% and 5.47% in the treatment as compared with the intial. Milk protein and milk fat production were higher in the treatment(0.90kg, 1.10kg) than those of control(0.66kg, 0.79kg). Milk fat content significantly increased with supplementing protected amino acids as compared to control(P<0.05). From the above results, protected amino acids were positively utilized in the performances of mid-lactating cows without inhibiting rumen fermentation. Further investigation is suggested for essential amino acid composition and intestinal digestion rate out of rumen bypass protein in dietary protein to be estimated.
Effect of Selenium Feeding on Selenium Concentration of Blood and Velvet Antler in Sika deer(Cervus nippon)
Kim, Bu-Yeon ; Kim, Myeong-Hwa ; Jeon, Byong-Tae ; Moon, Sang-Ho ; Lee, Hong-Gu ; Lee, Sang-Rak ;
Journal of Animal Science and Technology, volume 50, issue 2, 2008, Pages 209~216
DOI : 10.5187/JAST.2008.50.2.209
This study was conducted to investigate the effects of selenium feeding and supplementation in diet on the concentration of selenium in blood and velvet antler of spotted deer(Sika deer). Three spotted deer were fed high selenium concentration(6mg/kg DM). Absorption and retention rates of selenium were examined by evaluating selenium concentrations in feces and urine. Stress-related hormones and serum biochemical parameters in blood were also evaluated for the purpose of detecting any negative effect by the high level of selenium feeding. Eight spotted deers were randomly assigned to two groups and were fed with one of two diets for 20 days, which were with or without the addition of 6mg selenium /kg diet. Concentration of selenium in velvet antler was evaluated. Selenium concentration in blood of spotted deer fed high level selenium for 30 days was significantly increased(p<0.05), retention rate of selenium reached 59.15%. No differences in level of stress-related hormone and biochemical parameters(NEFA, ALT, AST) in blood were observed by feeding high level selenium. The diet with selenium significantly increased concentrations of selenium in top(0.11 vs 0.45ppm; p<0.001), middle(0.08 vs 0.21ppm; p<0.01) and basepart(0.08 vs 0.15ppm; p<0.05) of velvet antler.
Evaluation of Two Levels and Types of Acorn Powder on Product Quality of Low-fat Sausages as a Fat Replacer
Chin, Koo-Bok ; Ban, Gwang-Hoon ;
Journal of Animal Science and Technology, volume 50, issue 2, 2008, Pages 217~226
DOI : 10.5187/JAST.2008.50.2.217
Product quality of low-fat sausages(LFSs) manufactured with two types(powder and hydrated) and two levels(0.5 and 1.0%) of Acorn powder was evaluated as a potential fat replacer. The addition of Acorn powder did not affect the product quality of LFSs (P>0.05), however 0.5% and hydrated Acorn was better sensory flavor than 1.0% and powder counterparts. The addition of Acorn into the LFSs decreased the expressible moisture(%) except for 0.5% powder type and decreased Hunter L-values in LFSs. The addition of 1.0% hydrated Acorn lowered sensory saltiness than those of other LFSs and regular-fat control. These results indicated that Acorn powder can be used to manufacture LFSs as a fat replacer and 0.5% with hydrated form had better characteristics than 1.0% and powder counterparts. Future research will be performed to prevent the color change with the addition of Arcon powder in LFSs.
Effects of Dietary Lycopene Supplementation and Packaging on Quality Traits in Longissimus Muscle of Korean Native Pigs during Storage
Kim, Dong-Hun ; Lim, Dong-Gyun ; Seong, Pil-Nam ; Hah, Kyoung-Hee ; Cho, Soo-Hyun ; Kim, Jin-Hyoung ; Lee, Jong-Moon ; Kim, Young-Tae ; Kim, Il-Suk ; Jin, Sang-Keun ;
Journal of Animal Science and Technology, volume 50, issue 2, 2008, Pages 227~236
DOI : 10.5187/JAST.2008.50.2.227
The objective of this study was to evaluate the effect of dietary lycopene supplementation on meat quality in Longissimus Muscle of Korean native pigs. Meat samples were obtained from pigs which had been fed with finishing pig diets containing basal diets(C), 200 ppm lycopene (T1), 400 ppm lycopene (T2), and 800 ppm lycopene(T3). Longissimus muslce pH was not influenced by feeding lycopene. Total microbial counts of treatments were significantly lower than those of control at 0 day of storage (p<0.05). Counts of lactic acid bacteria and coliform of T2 and T3 were significantly lower than those of control and T1 at 0 day of storage(p<0.05). Regardless of packaging, microbial counts increased as the storage period increased(p<0.05). While water-holding capacity (WHC) values of the treatments were lower than those of control, cooking losses values of treatments were higher than those of control (p<0.05). Therefore, it can be concluded that Korean native pigs fed lycopene supplemented diets affect the microbial counts and meat quality (volatile basic nitrogen, WHC and cooking loss) compared with conventional ones. These results may show a fundamental data on production of Korean native pork.
Changes of Quality Properties of Pork Loaves with Chemical-free Sweet Persimmon Powder during Chilled Storage at 5℃
Ha, Chang-Ju ; Jin, Sang-Keun ; Nam, Young-Wook ; Yang, Mi-Ra ; Ko, Byung-Soon ; Kim, Il-Suk ;
Journal of Animal Science and Technology, volume 50, issue 2, 2008, Pages 237~246
DOI : 10.5187/JAST.2008.50.2.237
Four different pork loaves were made with two levels, HP/FP-3% and HP/FP-6%, containing 3.0 and 6.0% HP(hot air dried sweet persimmon powder)/FP(freezer dried sweet persimmon powder), respectively. HP and FP(3% and 6%) were added into ground pork loin separately. A control without persimmon powder were used for comparison. Patties were cooked to 74℃ in electric oven, after cooling, the aerobic packaged meat loaves were stored at 5℃. The moisture and crude ash were higher in the FP-6%, and the crude protein and crude fat were no different among the samples. The pH in control sample was significantly higher(p<0.05) than those of treatment group, however no significant difference was found among the 4 treatments. The TBARS(thiobarbituric reactive substance) values of all samples showed a tendency of increasing value along the storage days. The TBARS and a* value increased(p<0.05) as the addition ratio of HP/FP increased, respectively. With regard to microorganisms, the number of total aerobic bacteria were lower than 3.11 log10 CFU/g. In sensory evaluation, meat loaves containing persimmon powder resulted in a high overall acceptability, although they were not significantly different in overall acceptability.
Effects of Supplementary Wild Grape Wine By-product on Quality Characteristic of Loin from Berkshire Breed
Kim, Tae-Wan ; Kim, Chul-Wook ; Kim, Il-Suk ;
Journal of Animal Science and Technology, volume 50, issue 2, 2008, Pages 247~254
DOI : 10.5187/JAST.2008.50.2.247
A total of 40 pigs were used to investigate the feeding effects of supplementary wild grape wine by-product on pork quality of American Berkshire breed in the swine farm of Hamyang area. Treatments were C that was basal diet, and T that was treated by dietary wild grape wine by-product(5%) were added in feed. About 70 kg pigs were bred a period of 88 days, and slaughtered. The pork quality characteristic were measured in pork loin. In chemical composition, moisture and crude fat were not significantly different between C and T, but T were lower(p<0.05) than C. There were no difference in crude protein and crude ash(p<0.05). pH and water holding capacity(WHC) were not significantly different between C and T, whereas the cholesterol and fat shear force of T were lower(p<0.05) than C. There were no different in the meat color, but the Hunter’s L* and W value of T were higher(p<0.05) than C. Oleic acid(C18:1), linoleic acid(C18:2, n-6), arachidonic acid(C20:4, n-6), Essential fatty acid(EFA), and EFA/unsaturated fatty acid were significantly(p<0.05) different between C and T, in the fatty acid compositions of loins. Also, the total amino acid composition of pork were not significantly different between C and T, but essential fatty acid of T was significantly higher(p<0.05) than that of C. This observation suggests that wild grape wine by-product supplements may have some beneficial effects on improving backfat color, shear force, cholesterol and essential fatty acid content of pork loin.
Effect of Hot-Air Dried Tomato Powder on the Quality Properties of Pork Patties during Cold Storage
Kim, Il-Suk ; Jin, Sang-Keun ; Nam, Sang-Hae ; Nam, Young-Wook ; Yang, Mi-Ra ; Min, Hoon-Sik ; Kim, Dong-Hoon ;
Journal of Animal Science and Technology, volume 50, issue 2, 2008, Pages 255~264
DOI : 10.5187/JAST.2008.50.2.255
The effects of hot air dried tomato powder on the physicochemical and sensory properties of meat patties were studied. The control(C, no addition) and 4 treatments with addition of hot air dried tomato powder(T1, 0.25; T2, 0.50; T3, 0.75; and T4, 1.00%) were prepared and stored for 7 days at 5℃. The pH values of T4 were significantly lower(p<0.05) than those of control and other treatments during initial storage, however, the pH values of T4 were higher(p<0.05) at 7 days of storage. The cooking loss was not significantly different between control and all treatments. The 2-thiobarbituric reactive substances (TBARS) of meat patties containing hot air dried tomato powder were significantly lower(p<0.05) compared to those for control during the whole storage. The volatile basic nitrogen(VBN) values of T2 increased(p<0.05) significantly as the storage period increased, but there was no difference in VBN between control and the other treatments(T1, T3, T4). In meat color, L*, a* and b* of meat patties containing hot air dried tomato powder showed slightly higher (p>0.05) than that of control. a* and b* of T4 were the highest(p<0.05) among the all products. Total plate counts(TPC) increased(p<0.05) significantly as the storage period increased. The result of TPC showed the range of 5.48(T2)~6.98(C) log CFU/g at the 7 day of storage. Sensory panels evaluated that pork patties containing hot air dried tomato powder had the slightly higher score in overall acceptability.
Polymorphism Analysis and Expression of the CCAAT/Enhancer Binding Protein β(C/EBPβ) in the Korean Native Cattle and Black Cattle Storage
Kim, Hey-Min ; Lee, Sang-Mi ; Pack, Hyo-Young ; Yoon, Seul-Ki ; Yoon, Du-Hak ; Lee, Seung-Soo ; Ko, Moon-Suck ; Moon, Seung-Ju ; Kang, Man-Jong ;
Journal of Animal Science and Technology, volume 50, issue 2, 2008, Pages 265~272
DOI : 10.5187/JAST.2008.50.2.265
The CCAAT/enhancer binding protein β(C/EBPβ), a member of the leucine zipper DNA-binding protein of transcription factor, plays a crucial role in the control of early phases of adipocyte differentiation. In this studies, we report the identification, characterization, and expression of the Korean native cattle C/EBPβ gene. The Korean native cattle and black cattle C/EBPβ cDNA includes a 1047bp open reading frame encoding a protein of 348 amino acids. The C/EBPβ cDNA sequence of the Korean native cattle and black cattle shows high conservation with the corresponding amino acid sequences reported in other species. The distribution of C/EBPβ mRNA in various tissues of Korean native cattle aged 26 months was investigated using Northern Blot analysis. The C/EBPβ expression was detected in adipose tissue, lung, sirloin while expression was not detected in heart, kidney, small intestine, colon, and liver. However, we are analyzed polymorphism of bZIP domain in the C/EBPβ gene. A polymorphism was not identified at this position.
Study of Jindo Dog Personality Traits:Questionnaire of The 16th Korean Jindo Dog Show
Hong, Kyung-Won ; Kim, Young-San ; Shin, Young-Bin ; Oh, Seok-Il ; Kim, Jong-Seok ; Choi, Hyuk ; Lee, Ji-Woong ; Sun, Sang-Soo ; Lee, Jae-Il ; Lee, Sang-Eun ; Chung, Dong-Hee ; Cho, Yong-Min ; Im, Seok-Ki ; Choi, Bong-Hwan ;
Journal of Animal Science and Technology, volume 50, issue 2, 2008, Pages 273~278
DOI : 10.5187/JAST.2008.50.2.273
There have been studies about dog’s personality and behavior, which is helpful to breed dogs as guide or companion. In this study, a questionnaire was developed using 54 Jindo dogs, which considered ten items about aggressiveness and sociability. The scores were analyzed by principle component analysis (PCA), after accounting for four variables: age, gender, growing place, and coat-colors. Our results from the PCA indicated three principle components, which classified ‘aggressiveness’, ‘sociability’ and unknown factor. The four variables did not significantly affect aggressiveness(P>0.05). However, there was a relationship between coat-color and sociability, i.e., the Jindo dogs with fawn color were more sociable than the white ones(P<0.1).
Study on the Induction of Antlerogenesis by Calcium Chloride Treatment in Female Elk Deer
Kim, Sang-Woo ; Lee, Seung-Soo ; Choi, Sun-Ho ; Sang, Byong-Don ; Kim, Young-Keun ; Sang, Byong-Chan ; Seo, Kil-Woong ; Moon, Sang-Ho ;
Journal of Animal Science and Technology, volume 50, issue 2, 2008, Pages 279~284
DOI : 10.5187/JAST.2008.50.2.279
To investigate the effects of CaCl2 on artificial induction of antlerogenesis in female deer, various CaCl2 conditions with different concentrations, dosages and times were treated to five female Elk(Cervua Canadensis). After injection of CaCl2 solution to the putative region of antlerogenesis, rate of induction, yield of antler, length of antler, number of point were examined. In regard to the effect of concentration of CaCl2 solution on the induction of antlerogenesis in the female deer, generation of pedicle and antler has not induced under treatment of 2ml and 3ml of 15％ solution, but only pedicle has generated with 4ml of 15％ solution, otherwise generation of pedicle and antler has induced under treatment of 1.5ml, 2ml and 3ml of 30％ solution and 1ml and 2ml of 50％ solution. The yields of antler were 319g in 4ml of 15％ solution, and 1,290g, 513g and 295g in 1.5ml, 2ml and 3ml of 30％ solution, respectively, and 800g and 443g in 1ml and 2ml of 50％ solution, respectively. The yields of antler of 30％ solution and 50％ solution were decreased with increase the dosage volume. The maximum yield of antler was 1,290g at 30％ 1.5ml treatment. The length of antler were 25cm in 15％ 4ml treatment, and 55cm, 51cm and 35㎝ in 1.5ml, 2ml and 3ml of 30％ solution, respectively, and 60cm and 35cm in 1ml and 2ml 50％ solution, respectively. There was a tendency that length of antler became longer as yield of antler were grew. The numbers of point were 2 in 15％ 4ml treatment, and 5, 2.3 and 1 in 1.5ml, 2ml and 3ml of 30％ solution, respectively, and 3 and 1 in 1ml and 2ml of 50％ solution, respectively. The number of point was not related to concentration and dosage of CaCl2 solution, but related to the shape of wound due to the time and method of injection. Consequently, the optimum concentration of CaCl2 solution for artificial induction of antlerogenesis in female elk is 30%.