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돼지의 복당 ( 復當 ) 자돈수와 이유시 체중에 대한 삼품종 교배조합의 비교
김종복,진석병,박영일 ( J . B . Kim,S . B . Jin,Y . I . Park ) 한국축산학회 1983 한국축산학회지 Vol.25 No.3
The data from 1,674 litters of three-breed crosses produced from Yorkshire-Landrace (YL), Duroc-Yorkshire (DY) and Duroc-Landrace (DL) sows mated to purebred Spot and Hampshire boars were analysed by least squares method to estimate the least squares mean of specific 3-breed crosses, to compare among dam crosses, and to compare between sire breeds for total number of pigs per litter at birth, ,number of live pigs per litter at birth, Utter size at weaning and pig weight at weaning at 30 days of age. The results obtained in this study are as follows. 1. Among the six 3-breed crosses compared, S×YL had the largest number of pigs born alive and total number of pigs born per litter. S×DL had the Largest litter size at weaning and H×DL had the largest weaning weight of pig at 30 days of age. 2. Among the three dam crosses compared, Duroc-Landrace sows tended to be superior in the total number of pig born per litter, litter size at weaning, and in weaning weight of pig, although the differences among the dam crosses were statistically insignificant. 3. The 3-breed crosses produced by Spotted boars tended to have larger litter size at birth and apt weaning, but had smaller weaning weight of pig.
김종복(J . B . Kim),정흥우(H . W . Chung),박영일(Y . I . Park) 한국축산학회 1988 한국축산학회지 Vol.30 No.8
This study was conducted to study the effect of mating types on the total number of pigs born per litter, number of pigs suckled per litter and birth weight of pigs. The data for this study were obtained from 32,821 litters of the Yorkshire, Landrace, Hampshire and Duroc purebreds and the crossbreds which were produced by crossing the Yorkshire, Landrace, Hampshire, Duroc and Spot and farrowed from Jan., 1979 to June, 1985. The data were statistically analysed by the least-squares method. The results obtained in this study are as. follow s. 1. The least-squares overall means were 9.99±0.04 for the total number of pigs born per litter, 9.33±0.04 for the number of pigs suckled per litter and 1.38±0.04Kg for the birth weight of pigs. 2. Among the purebreds, the Landrace had the largest number of pigs born and suckled per litter, followed in rank by Yorkshires, Durocs and Hampshires. The Duroc was the heaviest in the birth weight of pigs, followed in rank by Hampshires, Landraces and Yorkshires. 3. The backcrosses, 3-breed crosses and the two multiple crosses produced by 3-breed cross dams had larger number of pigs born and larger number of pigs suckled pet litter than the purebreds or two breed crosses due to the maternal heterosis. The 3-breed crosses and the multiple crosses by 3-breed cross dams tended to have heavier birth weight than the 2-breed crosses. 4. The total number of pigs born per litter, number of pigs suckled and birth weight of the first parity sows were inferior to those of the second parity sows. The number born and number suckled per litter of the 4th and 5th parity sows were larger than those of other parity sows and the birth weights of the second and 3rd parity sows were heavier than those of other parity sows. 5. The sows furrowed in May, June and September tended to have larger number of pigs born and suckled compared with those furrowed in other months of the year and the birth weight of pigs furrowed in the spring was heavier than those furrowed im the summer.
김종복(J . B . Kim),정흥우(H . W . Chung),박영일(Y . I . Park) 한국축산학회 1988 한국축산학회지 Vol.30 No.10
Heritabilities and correlations between litter size and litter weight at birth and at weaning were estimated from paternal half-sib analyses on the basis of the data from 2,156 litters of purebred Landraces, Yorkshires, Durocs and Hampshires. The results obtained in this study are summarized as follows; 1. Heritabilities of litter size at birth and at weaning estimated were 0.20 ±0.09 and 0.11 ±0.08 for Landraces, 0.25 ± 0.12 and 0.14 ± 0.11 for Yorkshires, 0.04 ± 0.09 and 0.03 ± 0.09 for Durocs, and 0.12 ± 0.10 and 0.10 ± 0.10 for Hampshires, respectively. Heritability estimates of litter weight at birth and at weaning were 0.32 ± 0.11 and 0.11 ± 0.08 for Landraces, 0.32 ± 0.13 and 0.12 ± 0.10 for Yorkshires, 0.23 ± 0.13 and 0.08 ±0.10 for Durocs, and 0.09 ±0.10 and 0.03 ±0.08 for Hampshires, respectively. 2. The genetic correlations of litter size at birth with litter size at weaning and litter weight at weaning were 0.82 and 0.56 for Landraces, 0.76 and 0.49 for Yorkshires, 0.53 and 0.47 for Durocs 0.79, and 0.33 for Hampshires, respectively. The genetic correlations between litter size at weaning and litter weight at weaning were 0.92 for Landraces, 0.83 for Yorkshires, 0.74 for Durocs, and 0.73 for Hampshires, respectively. 3. The phenotypic correlations of litter size at birth with litter size at weaning and litter weight at weaning were 0.78 and 0.70 for Landraces, 0.75 and 0.65 for Yorkshires, 0.80 and 0.73 for Durocs, and 0.83 and 0.73 for Hampshires, respectively. The phenotypic correlations between litter size at weaning and litter weight at weaning were 0.88 for Landraces, 0.88 for Yorkshires, 0.91 for Durocs, and 0.91 for Hampshires, respectively
재조합 소 성장호르몬 투여가 젖소의 혈액성분 , 건강 및 안정성에 미치는 영향
신종서(J . S . Shin),심태수(T . S . Sim),김종복(J . B . Kim),장병선(B . S . Chang),홍병주(B . J . Hong) 한국축산학회 1996 한국축산학회지 Vol.38 No.4
The effects of newly developed sustained release recombinant bovine somatotropin(SR-rBST) on blood metabolites, concentration of blood BST, concentration of milk BST, health problems and reproductive characteristics of lactating dairy cows were examined. Forty eight holstein cows were randomly assigned to the four levels of non-treated control and SR-rBST treated groups(25㎎/d/head, 300㎎/14d/head, 500㎎/14d/head). The results obtained are summarized as follows: The SR-rBST treated cows showed increased levels of calcium, glucose, creatinine, urea in blood compared with control cows. Circular concentration of blood BST was significantly increased in the treated groups in comparison with control group. Circular concentration of milk BST was not different between the treated groups and the non-treated group. The health problems and reproductive characteristics were not affected by SR-rBST treatment. These results indicate that the newly developed SR-rBST administration to the dairy cow did not influence blood metabolites, concentration of milk BST, health probems and reproductive performances.
Recombinant Bovine Somatotropin 장기간 투여가 젖소의 산유반응에 미치는 영향
홍병주(B . J . Hong),정준(J . Jeong),성경일(K . I . Sung),여인서(I . S . Yuh),김종복(J . B . Kim),장병선(B . S . Chang),송지용(J . Y . Song) 한국축산학회 1993 한국축산학회지 Vol.35 No.2
The effects of recombinant bovine somatotropin(rBST) on various responses of dairy cows were extensively investigated for a 270-day long experiment. Thirty two lactating Holstein cows were randomly assigned to the three levels of rBST treated groups (12.5㎎/h/d, 25.0㎎/h/d, and 500㎎/h/14d) and the non-treated control. Dairy properties investigated were: 1) the milk yield and composition; 2) blood metabolites; 3) levels of insulin like growth factor-1 (IGF-1) and BST in milk and serum; 4) health and reproductive characteristics; and 5) economical profitability. Milk yield and 4% fat corrected milk(4% FCM) yield were significantly increased in the rBST treated groups in comparison with control. The group treated with 25㎎/h/d showed an improvement in 4% FCM yield over the other two treated groups. The similar results were also obtained in the analyses for the milk components(protein, fat, lactose and SNF). The number of somatic cell count (SCC) was substantially decreased in the 25.0㎎ rBST treated group than the other groups. For each of early, middle, and late lactation stages, the influence of rBST treated groups were not noticable in the early lactation but were very remarkable in the middle and late lactation. rBST treated cows showed effects in increasing levels of glucose and triglyceride in blood, and moderatly increased IGF-1 and BST in serum, however, did not affect those in milk. Metabolic disorders, mastitis, and reproductive performance were not affected by rBST treatment. The differences of monetary return with and without treatment of rBST was of great significance.
한우도체의 부분육 수율에 영향을 미치는 성 , 도체중 및 도체평가 형질들의 효과
이재윤,김종복,신종서,양부근,홍병주 ( J . Y . Lee,J . B . Kim,J . S . Shin,B . K . Yang,B . J . Hong ) 한국축산학회 1997 한국축산학회지 Vol.39 No.2
The data of 550 beef tattles collected after grading in Seoul Whole Sale Market, NLCF from September, 1995 to March, 1996 were analyzed to estimate effects of sex, carcass weight and some carcass traits on retailed cut percentage. Correlation between lean and supreme meat percentages was 0.741 and correlation between lean and top grade meat percentages was 0.939. For steers, lean meat, bone, supreme meat, and top grade meat percentages were 65.31, 12.80, 15.15, and 37.74%, respectively, which were lower than those of bull which were 67.27, 13.09, 16.09 and 12.41%, respectively. However, fat percentage of 21.88% and rib percentage of 12.41% were higher than those of bulls which were 19.41 and 12.06%, respectively. In cow, bone percentage of 12.30% was low but ratio of muscle to bone of 1.84 was high. The grade 1 of meat quality obtained higher fat yield and ratio of fat to bone than the grade 2 and 3 of meat quality. The grade A of meat yield obtained higher lean meat percentage, top grade meat percentage, ratio of muscle to bone, and ratio of muscle to fat which were respectively 67.03, 39.09, 5.26 and 3.56% than the grade B and C of meat yield.
Recombinant Bovine Somatotropin 투여가 한우의 성장 및 도체품질에 미치는 영향
홍병주(B . J . Hong),정지원(J . W . Jeong),성경일(K . I . Sung),여인서(I . S . Yuh),김종복(J . B . Kim),이병건(B . G . Rhee),장병선(B . S . Chang) 한국축산학회 1993 한국축산학회지 Vol.35 No.2
The effects of recombinant bovine somatotropin(rBST) on various characteristics of Korean native cattle were investigated to maximize increasing of meat productivity and economical profits. Twelve growing Korean native bulls were randomly assigned to rBST treatments of 0, 15㎎/d and 30㎎/d, per head for the period of 193-day long trial, and another 90-day long trial was followed by with four growing bulls to investigate the effect of rBST on carcass quality. The characteristics of interest were body gain, feed intake, body conformation measurements, carcass grades and economical traits. Average daily gain of rBST treated bull was increased by 11% compared with control. Feed intake did not affected by rBST administration, but feed effiency was improved by 7-14% to that of control due to daily body gain effect. rBST treated bulls were also increased body length, chest width, chest depth, chest girth and shank circumference. Back fat thickness and intermuscular fat content were decreased, and rib-eye area and meat production index value were increased when the bull was treated with rBST. Thus, the overall carcass quality was graded up in some extent and the economical profits were also elevated. The expected economic gain per bull by rBST treatment reaches 333,389 to 352,925 won.