• Asian-Australasian Journal of Animal Sciences
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• 제28권8호
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• pp.1116-1122
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• 2015

This study aimed to investigate the effect of sunflower seeds, either as whole or as oil, on rumen fermentation, milk production, milk composition and fatty acids profile in dairy goats. Fifteen lactating Damascus goats were divided randomly into three groups (n = 5) fed a basal diet of concentrate feed mixture and fresh Trifolium alexandrinum at 50:50 on dry matter basis (Control) in addition to 50 g/head/d sunflower seeds whole (SS) or 20 mL/head/d sunflower seeds oil (SO) in a complete randomized design. Milk was sampled every two weeks during 90 days of experimental period for chemical analysis and rumen was sampled at 30, 60, and 90 days of the experiment for ruminal pH, volatile fatty acids (tVFA), and ammonia-N determination. Addition of SO decreased (p = 0.017) ruminal pH, whereas SO and SS increased tVFA (p<0.001) and acetate (p = 0.034) concentrations. Serum glucose increased (p = 0.013) in SO and SS goats vs Control. The SO and SS treated goats had improved milk yield (p = 0.007) and milk fat content (p = 0.002). Moreover, SO increased milk lactose content (p = 0.048) and feed efficiency (p = 0.046) compared to Control. Both of SS and SO increased (p<0.05) milk unsaturated fatty acids content specially conjugated linolenic acid (CLA) vs Control. Addition of SS and SO increased (p = 0. 021) C18:3N3 fatty acid compared to Control diet. Data suggested that addition of either SS or SO to lactating goats ration had beneficial effects on milk yield and milk composition with enhancing milk content of healthy fatty acids (CLA and omega 3), without detrimental effects on animal performance.

• Asian-Australasian Journal of Animal Sciences
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• 제18권3호
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• pp.350-353
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• 2005

Effects of sucrose supplement on the pattern of VFA production and microbial protein synthesis in the rumen were examined in sheep consuming basal diet of grass silage (2.5 kg fresh wt/d) that was provided in 24 equal meals each day by an automatic feeder. Four mature wethers were allocated to four experimental treatments in a 4${\times}$4 Latin square design with periods lasting 14 days. The treatments were (1) the basal diet, (2) supplemented with 150 g sucrose and 7.0 g urea, (3) 300 g sucrose and 13 g urea, and (4) 450 g sucrose and 20 g urea given as a continuous intraruminal infusion for 24 h. All infusions were given in 2 litres of aqueous solution per day using a peristaltic pump. The effect of sucrose level on rumen mean pH was significantly linear (p<0.01). There were not significant differences in the concentration of ammonia-N, total VFA and the molar proportions of acetate, propionate and butyrate with the level of sucrose infusion. The molar proportions of isobutyric acid (p<0.05) and isovaleric acid (p<0.001) were significantly reduced when the infused amount of sucrose was increased. The flow of microbial N was linearly (p<0.001) increased with sucrose and urea level. High levels of readily fermentable carbohydrate in a ration reduced the efficiency of microbial protein synthesis in the rumen. It was demonstrated that of the individual fatty acids, only the molar proportion of isovalerate showed a significant negative correlation (R2=$0.3501^{**}$) with the amount of microbial N produced and a significant positive correlation (R2=$0.2735^{**}$) with the efficiency of microbial growth.

• Asian-Australasian Journal of Animal Sciences
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• 제10권4호
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• pp.391-397
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• 1997

Six medium-framed steers, fitted with ruminal cannulas, were utilized in a $6{\times}6$ Latin square design with a $3{\times}2$ arrangement of treatments to determine the effects of sorghum hybrid and grain supplementation on nutrient digestibilities and passage rates and ruminal metabolism of silage-based diets fed to growing steers. The diets consisted of three wholes-plant silages (a high grain-containing, grain sorghum and middle-season, moderate grain-containing, and late-season, low grain-containing forage sorghums), each fed with or without 25% rolled grain sorghum. No significant interactions occurred between sorghum hybrid and grain supplementation for the digestion or passage rate criteria measured. Ruminal butyrate concentration was the only fermentation characteristic affected by a hybrid ${\times}$ grain supplementation interaction. The grain sorghum silage diets had the highest DM, OM, and ADF digestibilities; the late-season silage diets, the lowest. Digestibility of NDF tended to be highest (p < 0.10) for the grain sorghum silage, whereas starch digestibility was not affected by sorghum hybrid. Ruminal ammonia, acetate, propionate, butyrate, and total VFA concentrations were highest for the grain sorghum silage diets. Grain supplementation increased DM and OM digestibilities, but had no effect on digestibilities of NDF, ADF, and starch. Ruminal pH was decreased, but total VFA concentration and acetate : propionate ratio were not affected by grain supplementation.

• 한국도로학회논문집
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• 제6권4호
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• pp.65-73
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• 2004

마샬배합설계에서 얻어지는 안정도나 흐름은 혼합물의 역학적 특성을 제대로 반영하지 못하며 소성변형과의 상관성이 낮다. 그러므로 안정도나 흐름의 기준을 통과하는 배합으로 제조한 혼합물에서도 소성변형이 많이 발생된다. 따라서 본 연구의 목적은 국내에서 이용되는 마샬 방법과 미국의 수퍼페이브 방법으로 배합설계를 수행하여 각 방법의 혼합물 특성치의 차이점과 문제점을 확인하는데 있다. 이를 위하여 골재 세 종류, 한 종류의 아스팔트(AC 60-80), 두 종류의 골재 입도(19mm, 13mm)를 각각의 배합설계방법에 사용하여 총 12종류의 혼합물을 배합설계를 수행하여 최적아스팔트함량을 결정하였다. 이 결정된 최적아스팔트 함량으로 혼합물을 제조하여 특성치를 비교 분석하였다. 그 결과, 마샬 방법을 통해 결정된 아스팔트 함량이 수퍼페이브 방법에 의 한 함량보다 0.1$\sim$0.3% 포인트 정도 높게 나타났다. 이것은 마샬 방법이 수퍼페이브 방법보다 아스팔트 함량을 높게 결정되도록 골재입도가 주어졌기 때문인데 이것이 소성변형에 상대적으로 취약한 직접적인 원인이 되는지는 더 많은 연구가 필요할 것이다.

• 농업과학연구
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• 제42권3호
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• pp.237-244
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• 2015

Four ruminally cannulated Holstein steers (BW $401.0{\pm}2.22kg$) fed TMR containing low protein (CP 9.63 %) as a basal diet were used to investigate the effects of cornell net carbohydrates and protein system (CNCPS) fraction enriched protein feeds on rumen fermentation and blood metabolites. The steers used in a $4{\times}4$ Latin square design consumed TMR only (control), TMR with rapeseed meal (AB1), TMR with soybean meal (B2) and TMR with perilla meal (B3C), respectively. The protein feeds were substituted for 30 % crude protein of TMR intake. For measuring ruminal pH, ammonia-N and volatile fatty acids (VFA), ruminal digesta was sampled through ruminal cannula at 1 h-interval after the afternoon feeding. Blood was sampled via the jugular vein after the ruminal digesta sampling. Different CNCPS fraction-enriched proteins did not affect (p>0.05) ruminal pH except B3C being numerically low compared with the other groups. Ammonia-N and VFA were not significantly different among the experimental groups. Numerically low ammonia-N appeared in the steers fed rapeseed meal even though it contained high soluble N composition (A and B1 fractions). The discrepancy is unclear; however this may be related to low protein level in the diet and/or low DM intake. Blood metabolites were not significantly affected by the protein substitution except for blood urea nitrogen that was significantly (p<0.05) increased.

• 한국환경보건학회지
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• 제24권1호
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• pp.54-61
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• 1998

This study was conducted in order to evaluate the treatment efficiencies of anaerobic packed and fluidized-bed biofilm and to investigate applicability in treating livestock wastewater. Biocarbonate alkalinity(BA) and volatile fatty acid(VFA) were about 3,230-3,270 mg/l, 3,790-3,126 mg/l(as CaCO$_3$) and 224-402 mg/l, 141-387 mg/l(as CH$_3$COOH), and VFA/BA ratio was about 0.069~0.12, 0.045-0.12 in packed and fluidized-bed biofilm. When COD loading rate was 6.0 kg COD/$m^3\cdot$ day in packed and fluidized-bed biofilm, methane gas production were 3.23 l/day and 4.38 l/day, respectively. In the same COD loading rate, methane gas production volumes per kg COD removal were 0.25 m$^3$ CH$_4$/kg COD$_{rm}$ and $0.28 m^3 CH_4/kg COD^{rm}$, respectively. At this time, it could be estimated that fluidized-bed biofilm was more high. In case of HRT 0.94 day(6.0 kg COD/$m^3\cdot$ day) and 11 day(0.5 kg COD/$m^3\cdot$ day), packed-bed biofilm showed 59% and 81% COD removal efficiency, respectively. While fluidized-bed biofilm showed 72% and 85% removal efficiency, respectively. It was showed that fluidized-bed biofilm was more efficient. Packed-bed biofilm was higher than fluidized in treatment efficiencies of organic matters, but required continuous treatment using combined system, because it was very exceeded over an environmental standard solidified from '96 year. In operating fluidized-bed biofilm, if farm house consider high power cost according to high circulation ratio in an economic point of view, it would have an effect that farm house use packed-bed biofilm as combined system in treating livestock wastewater.

• 한국보건간호학회지
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• 제21권1호
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• pp.5-14
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• 2007

Purpose: The purpose of this study was to examine the effects of a group walking exercise on body composition, blood lipid profiles and psychological factors. Also this study was to examine the satisfaction of walking exercise and characteristics of the exercise behavior among participants. Method: The subjects, aged 30 to 77 years, were 138 participants in a 24-week, group walking exercise. A walking exercise protocol and education was given to the participants, which was to do walking over three times a week and over thirty minutes each time. We compared the participants' body composition (BMI, PBF, BFM, FFM, WHR and VFA), blood lipid profiles (HDL-C, LDL-C, total cholesterol, triglyceride), exercise self-efficacy and quality of life before and after group walking excercise. Collected data were analyzed through paired t-test using the SAS program. Results: Mean walking frequency was 11.4 times per month and mean walking time was 71.5 min. BMI, PBF, BFM, WHR, and VFA were significantly decreased. FFM increased significantly (p=.0002). There were significant decreased in TC, LDL-C and TG.. Exercise self-efficacy did not increase significantly, but quality of life increased significantly(p=.0088). Conclusion: Community-Based 24 weeks group walking exercise program had positive effects on body composition, blood lipids and quality of life.

• Asian-Australasian Journal of Animal Sciences
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• 제20권9호
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• pp.1424-1432
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• 2007

Two male, rumen fistulated crossbred Brahman-Thai native beef cattle (body weight = $400{\pm}50$ kg), fed on rice straw as a source of roughage, were used as rumen fluid sources. The treatments were $2{\times}3$ factorial arrangements; two roughages (fresh cassava foliage and cassava hay) and three sulfur levels (elemental sulfur) at 0.2 (control), 0.5 and 1% of DM, respectively. The experiment revealed that the rates (c) of gas production, ammonia-nitrogen concentration, true digestibility, total concentration or molar proportions of VFA and microbial biomass were not significantly different between cassava hay and fresh cassava foliage. However, all parameters for cassava hay were higher than for fresh cassava foliage. The supplementation of 0.5% sulfur to fresh cassava foliage resulted in a significant increase in the rate of gas production, true digestibility, total concentration of VFA, microbial biomass, rate of HCN disappearance, thiocyanate appearance and cyanide percentage conversion into thiocyanate. However, there were no effects of sulfur supplementation at 0.2, 0.5 and 1% to cassava hay. The finding suggests the utilization of cassava foliage for rumen microorganisms in terms of fermentation and HCN detoxification could be improved by sulfur supplementation of 0.5% of DM.

• 지역사회간호학회지
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• 제17권1호
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• pp.38-45
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• 2006

Purpose: The purpose of this study was to examine the effects of a group walking exercise program on body composition, blood lipids and psychological factors at a community. Method: The subjects were 200 women(29 groups) who agreed to participate in group walking exercise for three months. Their ages ranged between 30 to 77 years. A simple walking exercise protocol was given to the participants, which was to do walking over three times a week and over thirty minutes each time. We compared the participants' body composition (BMI, PBF, BFM, FFM, WHR and VFA), blood lipids (HDL C, LDL C, total cholesterol, triglyceride) and exercise-self efficacy, self esteem, and quality of life before and after group walking. Collected data were analyzed through paired t test using the SAS program. Results: BMI. PBF, BFM, WHR, and VFA were significantly reduced (p<.01). However. FFM did not increase significantly (p=.416). There were significant changes in TC and TG (p<.01) but not in LDL C (P=.340). HDL C decreased but within the normal range. Exercise-self efficacy and quality of life did not increase significantly. Only self esteem increased significantly (p<.0001). Conclusion: Group walking exercise had positive effects on body composition, blood lipid and self esteem in community women.

• Asian-Australasian Journal of Animal Sciences
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• 제4권4호
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• pp.341-351
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• 1991

Sixteen Holstein heifer calves were used in an 112-day trial to study the effects of probiotic supplementation on growth performance and rumen metabolism. Calves were divided into four groups of four calves each, with two groups receiving the probiotic supplement and two groups serving as controls. Calves were limited to 1.6 kg dry matter of a corn-barley based grain mix per day. Long-stem bromegrass hay was fed as forage the first 56 days and bromegrass silage the last 56 days of the trial. Probiotic (28 g/d/calf) was fed along with the grain mix twice daily. Data were analyzed for the entire trial and also for the separate hay and silage feeding periods. Total weight gain and average daily gain were not affected (p>.05) by probiotic supplementation. Dry matter intake was lower (p<.05) and feed efficiency (kg feed/kg weight gain) was improved slightly during the hay feeding period for the probiotic-supplemented calves. Wither height gain was greater (p<.05) during the hay period and lower (p<.05) during the silage period for probiotic-supplemented calves. Heart girth gain was improved (p<.07) by probiotic supplementation, particularly during the hay feeding period (p<.05). Total rumen volatile fatty acid (VFA) concentration was higher (p<.05) with the probiotic-supplemented calves. Molar proportions of individual VFA were not affected (p>.05). Rumen ammonia-N and plasma urea-N concentration were lower (p<.05) for probiotic-supplemented calves during the hay feeding period. Total tract nutrient digestibility was not affected (p>.05). Some improvements in animal performance and changes in rumen and blood metabolites were observed when calves were supplemented with probiotic. Effects due to probiotic supplementation were most pronounced during the hay feeding period.