• Title/Summary/Keyword: p-CLA

Search Result 169, Processing Time 0.028 seconds

Effects of Feeding Extruded Soybean, Ground Canola Seed and Whole Cottonseed on Ruminal Fermentation, Performance and Milk Fatty Acid Profile in Early Lactation Dairy Cows

  • Chen, P.;Ji, P.;Li, Shengli
    • Asian-Australasian Journal of Animal Sciences
    • /
    • v.21 no.2
    • /
    • pp.204-213
    • /
    • 2008
  • Four ruminally cannulated Holstein cows averaging 43 days in milk (DIM) were used in a $4{\times}4$ Latin square to determine the effect of feeding extruded soybean, ground canola seed and whole cottonseed on ruminal fermentation and milk fatty acid profile. One hundred and twenty lactating Holstein cows, 58 (${\pm}31$) DIM, were assigned to four treatments in a completely randomized block design to study the effects of the three types of oilseeds on production parameters and milk fatty acid profile. The four diets were a control diet (CON) and three diets in which 10% extruded soybean (ESB), 5% ground canola seed (GCS) and 10% whole cottonseed (WCS) were included, respectively. Diets consisted of concentrate mix, corn silage and Chinese wild rye and were balanced to similar concentrations of CP, NDF and ADF. Ruminal fermentation results showed that ruminal fermentation parameters, dry matter intake and milk yield were not significantly affected by treatments. However, compared with the control, feeding cows with the three oilseed diets reduced C14:0 and C16:0 and elevated C18:0 and C18:1 concentrations in milk, and feeding ESB increased C18:2 and cis9, trans11 conjugated linoleic acid (CLA). Production results showed that feeding ESB tended to increase actual milk yield (30.85 kg/d vs. 29.29 kg/d) and significantly decreased milk fat percentage (3.53% vs. 4.06%) compared with CON. Milk protein (3.41%) and solid non-fat (13.27%) from cows fed WCS were significantly higher than from cows fed CON (3.24% and 12.63%, respectively). Milk urea N concentrations from cows fed the ESB (164.12 mg/L) and GCS (169.91 mg/L) were higher than cows fed CON (132.31 mg/L). However, intake of DM, 4% fat corrected milk, energy corrected milk, milk fat and protein yields, milk lactose percentage and yield, somatic cell count and body condition score were not affected by different treatments. The proportion of medium-chain fatty acid with 14 to 16 C units in milk was greatly decreased in cows fed ESB, GCS and WCS. Feeding ESB increased the concentration in milk of C18:1, C18:2, C18:3 and cis9, trans11-CLA content by 16.67%, 37.36%, 95.24%, 72.22%, respectively, feeding GCS improved C18:0 and C18:1 by 17.41% and 33.28%, respectively, and feeding WCS increased C18:0 by 31.01% compared with feeding CON. Both ruminal fermentation and production trial results indicated that supplementation of extruded soybean, ground canola seed and whole cottonseed could elevate the desirable poly- and monounsaturated fatty acid and decrease the medium chain fatty acid and saturated fatty acid content of milk fat without negative effects on ruminal fermentation and lactation performance.

Motorsports and Engineering Aspects (모터스포츠의 공학적 접근)

  • 장성국
    • Journal of the korean Society of Automotive Engineers
    • /
    • v.24 no.5
    • /
    • pp.98-103
    • /
    • 2002
  • 이제 카트 정렬과 휠 셋업에 필요한 최적의 변수들을 알아보았다. 실제 세팅은 위에서 언급한 내용 이외에도 많은 것들을 고려하여야 한다. 타이어 접지력의 세팅은 경기장, 날씨, 제품의 불 균일성 등을 고려하여 야 한다. 즉, 어떤 경기장은 코너의 반경이 다른 경기 장 보다 크며 어떤 경기장은 코너가 매우 많기도 하여 세팅을 상황에 맞게 하여야 하는 것이다. 각각의 변수를 세팅할 경우는 중간 값을 취하는 것이 바람직하여 이 중간 값을 취하는 것이 바람직하며 이 중간 값을 각각의 경기장의 특성에 맞추어 변화시키면 되는 것이다. 예를 들면, 접지력이 작게 발생되는 경기장(혹은 매우 추운날씨) 에서는 캐스터를 코기 하여 초기 회전 발생이 용이하게 할 수도 있다. 또한 토우인 값을 크게 하여 타이어가 마찰을 더욱 많이 발생하여 타이어의 온도가 급격히 상승하여 원하는 접지력의 수준에 용이하게 도달할 수 있게 하는 것이다. 그러나 이러한 세팅은 다른 핸들링 문제를 야기할 수 있다는 것을 이해하여야 하며 이러한 문제를 해결하는 또 다른 노력이 필요하게 되는 것이다. 가장 중요한 것은 후륜 내측으로부터는 조종 성능을 향상시키는데 필요한 접지력을 거의 기대하지 못한다는 것이며 마찰이 적게 발생하여 손쉽게 동력 손실을 초래하고 있다는 것이다. 그러므로 회전을 할 경우에도 속도를 낮추어서는 안되며 이렇게 하이야 핸들링이 매우 용이하게 되는 것이다. 그러나 위의 설명에서도 보았듯이 일부 세팅을 변경하면 여러 곳이 그 효과가 나타난다. 예를 들어 후륜의 간격을 변화시키면 카트에서 무게이동 뿐만 아니라 회전 시에 가속이나 감속에 의한 회전 토크의 효과도 달라지게 된다. 특정한 세팅의 변화가 어떻게 작용할 것이라는 확신을 가지고 있다고 할지라도 세팅에서 가장 중요한 것은 주행 기록이다. 여기서 설명되어진 많은 내용이 주행 기록을 향상시키기를 바라는 바이다.간이 육색과 총육색소 함량에는 영향을 미치지 않는 것으로 나타났다. 관능적 특성평가 중 육색과 육즙참출은 대조구와 비교하여 CLA급여 처리구가 유의적인 차이가 없었으나, 근내지방 축적 정도와 전체적인 기호성은 대조구에 비하여 CLA 급여 처리구가 유의적으로 높은 평가를 받았다(p<0.05). 간격은 술 후 1년 후까지도 지속적으로 감소하는 경향을 보였다. 따라서 이 기간동안에는 추적관찰이 필요한 것으로 생각된다.경미하게 나타났으며, 이는 2% 흥국 첨가식이의 섭취로 인한 bromobenzene 대사 및 유해산소 해독의 촉진에 기인되기 때문일 것으로 생각된다.다.과 및 지질과산화억제효과의 순과 일치하였다. 총 flavonoid 함량은 DPPH 라디칼 제거효과에 대한 $IC_{50}$/ 값과 높은 상관관계(r=-0.9924, p<0.01)를 나타내었다.이 우수한 심근보호 효과를 나타내나, 허혈시간이 2시간을 초과하면 심근의 혈역학적 기능과 미세구조의 변화는 중등도의 저온(22∼24$^{\circ}C$)에서 유의하게 악화되었다. 이 같은 결과로 볼 때 심근 허혈시간이 2시간을 초과한다면 심근 온도를 낮추어야 할 것으로 판단된다. 7.2, with 64.0% of office workers having an average level between 6- and 9. The degree of stress was higher for females than males, for unmarried salaried and hot-tempered persons. Those not doing exercise were subject to the highest levels of stress, and those a having sufficient sleep were found to be subject to less stress.

  • PDF

Impacts of Bioactive Components Addition on Qualities of Imitation Crab Meat Containing Spent Laying Hen Meats During Storage (기능성 물질의 첨가가 폐계육이 함유된 게맛살의 저장중 품질에 미치는 영향)

  • Jin, Sang-Keun;Hur, Sun-Jin;Shin, Teak-Soon
    • Journal of Life Science
    • /
    • v.20 no.6
    • /
    • pp.861-869
    • /
    • 2010
  • Imitation crab stick samples were made from Alaska pollack with protein recovered from spent laying hens breast meat (C), Alaska pollack with spent laying hens breast recovered protein and cordyceps powder (T1), Alaska pollack with spent laying hens breast recovered protein and silkworm cocoon powder (T2), and Alaska pollack with spent laying hens breast recovered protein and conjugated linoleic acid (CLA) (T3). There were no significant differences in moisture, crude protein and crude fat among the imitation crab samples. pH was significantly higher in T2 and T3 compared with C and T1 after 4 weeks of storage. The values of $L^*$, $a^*$, $b^*$, and W (whiteness) in T3 were found to be more stable during storage and W in T3 was significantly higher than other samples. T3 was significantly lower in hardness, brittleness, gumminess and adhesiveness after 4 weeks of storage. Thiobarbituric acid reactive substance (TBA) values decreased with storage, whereas volatile basic nitron (VBN) values increased with storage periods in all samples. In sensory evaluation, there were no significant differences in color, odor, taste, tenderness, juiciness and overall acceptability among the samples. T3 was significantly lowest in quality among the treated samples.

Effect of Feeding Dietary Oils on Physico-Chemical Changes of Pork during Storage (오일 급여가 돈육의 저장 중 물리ㆍ화학적 변화에 미치는 영향)

  • 진상근;김일석;송영민;정기화;이성대;김희윤;남기윤;하경희;강양수
    • Food Science of Animal Resources
    • /
    • v.23 no.3
    • /
    • pp.227-235
    • /
    • 2003
  • The results were obtained from pigs which had been fed finishing pig diets containing 5% beef tallow(C) as control and 2% perilla seed oil(Tl), 3% beef tallow and 2% squid viscera oil(T2), 3% beef tallow and 2% CLA(conjugated linoleic acid, T3). All porks were stored at 1$^{\circ}C$ for 28 days. pH value of control group was higher than other treatments. Water holding capacity(WHC) did not show any significant difference among treatments, however, WHC of C and T3 was increased as storage days increased. Protein solubility of T3 was higher than the other treatments, but that of all groups increased up to 14 days of storage and then decreased. The a* value of C was higher than the others, but b* value was low on 28 days of storage. Volatile base nitrogen(VBN) value of T3 showed the highest level, but that of Tl was the lowest. Thiobarbituric acid reactive substances(TBARS) of T2 and T3 were' higher than those of C and Tl. In sensory analysis, meat color and overall acceptability of C were higher than those of the other treatments in raw meat, and meat appearance was higher than level in Tl.

Cloning and Expression of Thermostable Alpha-amylase Gene in Escherichia coli from Bacillus licheniformis ATCC 27811 (Bacillus licheniformis ATCC 27811이 생산하는 내열성 $\alpha$-amylase 유전자의 Cloning 및 발현)

  • Kim, I.C.;Jang, S.Y.;Cha, J.H.;Ko, Y.H.;Park, K.H.;Rho, H.M.
    • Microbiology and Biotechnology Letters
    • /
    • v.16 no.5
    • /
    • pp.369-373
    • /
    • 1988
  • The gene for thermostable alpha-amylase from the thermostable bacterium Bacillus licheniformis has been cloned and expressed in Escherichia coli. The Alpha-amylase producing E. coli cells contained a 7.4 kb chimeric plasmid (pTA 322) which was composed of the vector pBR322 and a 3.1 kb EcoRI fragment of B. licheniformis DNA. The alpha-amylase from cloned fragement was shown to be indistlnguishable from that of B. licheniformis in the optimum temperature of 9$0^{\circ}C$, heat stability and the pH stability. The foreign gene was expressed efficiently in E. coli and stably maintained.

  • PDF

The Effects of Excluding Animal Products from the Diet on Sensory Properties of Pork from Pigs Grown in New Zealand as Assessed by Singaporean Panelists

  • Leong, Jasmine;Purchas, Roger W.;Morel, Patrick C.H.;Wilkinson, Brian H.P.
    • Asian-Australasian Journal of Animal Sciences
    • /
    • v.23 no.1
    • /
    • pp.122-130
    • /
    • 2010
  • Sensory analyses of pork samples from leg muscles of female pigs raised in New Zealand (n = 17) were conducted using trained and untrained Singaporean panelists. The New Zealand pigs included three dietary groups, with one diet including animal products (NZA), and two containing plant products only (NZP & NZP+), with the NZP+ diet containing a supplement (0.614%) containing conjugated linoleic acid (CLA), selenium, and vitamin E. The New Zealand pork was also compared with Indonesian pork as local reference samples (n = 6). Pork samples from the NZA group had the highest score for mutton flavour and aftertaste, and the lowest score for brothy aroma, brothy flavour, meaty flavour, lightness and juiciness by trained sensory panels. Samples from NZP and NZP+ were similar except the NZP+ group had a stronger stale flavour than the NZP group (1.34 vs. 0.57 on a 100-point scale; p<0.05). The first and second functions of a discriminant analysis based on trained-panel scores for 14 attributes accounted for 95.4% of the variance, with function 1 (83.7%) being related mainly to mutton aroma, mutton flavour and aftertaste. Based on a 20-member untrained panel, the NZA pork had the highest mutton aroma and mutton flavour intensities (p<0.01) and aroma and flavour that was less acceptable than that from the NZP group (p<0.05). The acceptability scores of Indonesian pork were not significantly different from those of New Zealand pork, but its scores for mutton aroma and mutton flavour were significantly lower than NZP. Overall acceptability was positively associated with acceptability of aroma (r = 0.906), juiciness (r = 0.888), and tenderness (r = 0.904), but negatively associated with intensities of mutton aroma (r = -0.478) and flavour (r = -0.551).

Carcass traits, meat yield and fatty acid composition of adipose tissues and Supraspinatus muscle in goats fed blend of canola oil and palm oil

  • Adeyemi, K.D.;Ebrahimi, M.;Samsudin, A.A.;Sabow, A.B.;Sazili, A.Q.
    • Journal of Animal Science and Technology
    • /
    • v.57 no.12
    • /
    • pp.42.1-42.14
    • /
    • 2015
  • Background: Dietary fats can alter the deposition and distribution of body fats in ruminants. The deposition and distribution of body fat play a vital role in the quality of ruminant carcasses and are of great commercial value since they influence the profitability and consumer acceptability of ruminant meat. The current study examined the effects of dietary blend of 80 % canola oil and 20 % palm oil (BCPO) on carcass characteristics, meat yield and accretion of fatty acid (FA) in subcutaneous, omental, perirenal, and mesentery adipose depots and m. supraspinatus (SS) in goats. Methods: Twenty four Boer crossbred bucks (BW $20.54{\pm}0.47kg$) were randomly assigned to diets containing on DM basis 0, 4 and 8 % BCPO, fed for 100 d and harvested. Results: Diet had no effect (P > 0.05) on slaughter weight, dressing percentage, carcass and non-carcass components, meat yield, color, moisture and carotenoid contents and weight of adipose tissues in goats. The proportion of C18:1n-9 and cis-9 trans-11 CLA in the omental, perirenal and SS was higher (P < 0.05) in goats fed 4 and 8 % BCPO compared with the control goats. Dietary BCPO reduced (P < 0.05) the proportion of C14:0 in the omental, perirenal and mesentery depots, C18:0 in the perirenal depot, C16:0 in the SS and C16:1n-7 in the SS, omental and perirenal tissues. Dietary BCPO enhanced the proportion of C18:1 trans-11 Vaccenic and C18:3n-3 in SS and C20:5n-3 in SS and mesentery depot. No significant changes were found in the FA composition of subcutaneous depot. Conclusions: Results indicate that dietary BCPO can be utilized to alter the FA composition of adipose tissues without detrimental effects on carcass characteristics in goats. Nonetheless, dietary BCPO is not an effective repartitioning agent for body fats in goats.

Supplementation with Selenium and Vitamin E Improves Milk Fat Depression and Fatty Acid Composition in Dairy Cows Fed Fat Diet

  • Liu, Zhao L.;Yang, De P.;Chen, Pu;Dong, Wei X.;Wang, Dong M.
    • Asian-Australasian Journal of Animal Sciences
    • /
    • v.21 no.6
    • /
    • pp.838-844
    • /
    • 2008
  • This experiment was conducted to evaluate the effect of supplementing a fat diet with selenium (Se) and vitamin E on performance of cows, blood antioxidant status and milk fatty acid composition. Sixty-three lactating Holstein cows were randomly divided into seven groups of nine cows each and each group was fed one of the following diets: i) a basal diet (control); ii) a basal diet with 0.15 mg Se/kg DM (LSe); iii) a basal diet with 0.3 mg Se/kg DM (HSe); iv) a basal diet with 5,000 IU/cow d vitamin E (LVE); v) a basal diet with 10,000 IU/cow d vitamin E (HVE); vi) a basal diet with 0.15 mg Se/kg DM and 5,000 IU/cow d vitamin E (LSeVE); vii) a basal diet with 0.3 mg Se/kg DM and 10,000 IU/cow d vitamin E (HSeVE). Milk fat percentage and conjugated linoleic acid (CLA) yield in HVE and HSeVE diets increased (p<0.05) compared with the control diet. In milk fat, dietary supplementation of Se tended to increase the proportion of the sum of unsaturated fatty acids (UFA) and significantly decreased (p<0.05) the proportion of the sum of saturated fatty acids (SFA). In addition, compared with the control, thiobarbituric acid reactive substances (TBARS) content was lower and glutathione peroxidase (GSH-Px) was higher when fat diets were supplemented with Se. Our data showed that supplementation with Se and/or VE improved these nutrients in blood and milk. The results indicated that fat diets supplemented with Se improved both antioxidant status in blood and fatty acids in milk fat, and fat diets supplemented with vitamin E alleviated milk fat depression. Therefore, the combination of Se and vitamin E caused synergistic effects on the nutritional quality of milk fat and performance of cows fed a fat diet.

Biochemical and molecular characterization of a tetrachloroethylene (PCE) dechlorinating Clostridium bifermentans DPH-1

  • Chang, Young-Cheol;Toyama, Tadashi;Kikuchi, Shintaro
    • Journal of environmental and Sanitary engineering
    • /
    • v.23 no.2
    • /
    • pp.1-18
    • /
    • 2008
  • The tetrachloroethylene (PCE) dehalogenase of Clostridium bifermentans DPH-1 (a halorespiring organism) was purified, cloned, and sequenced. This enzyme is a homodimer with a molecular mass of ca. 70 kDa and exhibits dehalogenation of dichloroethylene isomers along with PCE and trichloroethylene (TCE). Broad range of substrate specificity for chlorinated aliphatic compounds (PCE, TCE, cis-1,2-dichloroethylene, trans-1,2-dichloroethylene, 1,1-dichloroethylene, 1,2-dichloropropene, and 1,1,2-trichloroethane) for this enzyme was also observed. A mixture of propyl iodide and titanium citrate caused a light-reversible inhibition of enzymatic activity suggesting the involvement of a corrinoid cofactor. A partial sequence (81 bp) of the encoding gene for PCE dehalogenase was amplified and sequenced with degenerateprimers designed from the N-terminal sequence (27 amino acid residues). Southern analysis of C. bifermentans genomic DNA using the polymerase chain reaction product as a probe revealed restriction fragment bands. A 5.0 kb ClaI fragment, harboring the relevant gene (designated pceC) was cloned (pDEHAL5) and the complete nucleotide sequence of pceC was determined. The gene showed homology mainly with microbial membrane proteins and no homology with any known dehalogenase, suggesting a distinct PCE dehalogenase. So, C. bifermentans could play some important role in the initial breakdown of PCE and other chlorinated aliphatic compounds in sites contaminated with mixtures of halogenated substances.

The Influence of Feeding Dietary Differences on Growth Performance and Carcass Quality in Finishing Pigs (사료조성 차이가 돼지 생산 및 도체형질에 미치는 영향)

  • 진상근;김일석;송영민;하경희;이성대;김회윤;주선태;박구부
    • Food Science of Animal Resources
    • /
    • v.23 no.1
    • /
    • pp.9-15
    • /
    • 2003
  • All diets were based on feeds of fattening period pigs(LY x D, ca. 90 kg) with six treatments, which were the control, containing 5% beef tallow(C), 3% beef tallows and 2% perilla seeds oil(T1), 250 ppm vit. E(${\alpha}$-tocopheryl acetate) in T1(T2), 3% beef tallow and 2% squid viscera oil(T3), 250 ppm vit. E in T3(T4), and 3% beef tallow and 2% CLA(T5), respectively. Produced porks and their carcass characteristics were as follows. The daily gain of pigs was higher in T2 and 73 than any other treatments(p<0.05). Its T2 and T3 was 3.71 and 3.80 respectively, however, there was no significance in feed intake. The highest back fat thickness was shown in control group on market weight, while there was no significant difference on their initial weight. Loin-eye muscle area did not show any significant difference on initial weight and on market weight, however, its T5 was about twice as large as T2's. Content of triglyceride in blood was high in control group as compared to others; especially, the values for T3, T4 and T5 were significantly low(p <0.05). There was no significant difference in total cholesterol contents, and the ratio of HDL cholesterol/total cholesterol was higher in vit. E treated samples than untreated sample. Atherogenic index was high in sample with T3 and low in sample with T2. The perilla seed oil, squid fish oil, and vit. E decreased atherogenic index. Dressing percentage, back fat thickness, and grade did not show any significant difference(p >0.05); however, T2, C and T3, T1 and T5 showed 4.67, 4.29, 4.00 respectively, in grades.