A repeated $4{\times}4$ Latin square design was conducted with eight ileal cannulated castrates to examine the effect of source of starch and fiber on nutrient balance and energy metabolism. Pigs were fed on one of the four experimental diets: Control diet (C) mainly based on cooked rice; and diets P, S and W with the inclusion of either raw potato starch, sugar beet pulp or wheat bran supplementation, respectively. With the exception of an increased (p<0.05) energy loss from methane production with diet S observed, no significant differences (p>0.05) in the ratio of metabolizable energy (ME)/digestible energy, the utilization of ME for fat deposition and for protein deposition, energy loss as hydrogen and urinary energy were found between diets. The efficiency of utilization of ME for maintenance was lower (p<0.05) with diets P and S than with diet C. The inclusion of fiber sources (sugar beet pulp or wheat bran) or potato starch reduced the maintenance energy requirement. The fecal energy excretion was increased (p<0.05) with either sugar beet pulp or wheat bran supplementation, while it was unaffected (p>0.05) by addition of potato starch. In comparison with diets C and P, a lowered ileal or fecal digestibility of energy with diets S and W was observed (p<0.05). Feeding sugar beet pulp caused increased (p<0.05) daily production of methane and carbon dioxide and consequently increased energy losses from methane and carbon dioxide production, while it did not influence the daily hydrogen production (p>0.05). An increased (p<0.05) proportion of NSP excreted in feces was seen by the supplementation of wheat bran. Higher NSP intake caused an increased daily amount of NSP in the ileum, but the ileal NSP proportion as a percentage of NSP intake was unaffected by diets. Feeding potato starch resulted in increased daily amount of starch measured in the ileum and the proportion of ileal starch as a percentage of starch intake, while no significant influence on fecal starch was found. Higher (p<0.05) daily amount of fecal starch and the proportion of fecal starch as a percentage of starch intake were found with fiber sources supplementation compared with diets C and P. By increasing the dietary NSP content the fecal amount of starch increased (p<0.01).
Flakemore, Aaron Ross;Otto, John Roger;Suybeng, Benedicte;Balogun, Razaq Oladimeji;Malau-Aduli, Bunmi Sherifat;Nichols, Peter David;Malau-Aduli, Aduli Enoch Othniel
Journal of Animal Science and Technology
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제57권10호
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pp.36.1-36.9
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2015
Background: This study examined the effects of dietary supplementation with rice bran, sire breed and gender on live animal performance and carcass characteristics in Australian crossbred and purebred Merino lambs. Methods: Forty-eight lambs balanced by sire breed (Dorset, White Suffolk, Merino) and gender (ewe, wether) were randomly allocated into three dietary supplementation groups (Control- 24 lambs fed wheat/barley-based pellets, Low- 12 animals fed a 50/50 ratio of wheat-based/rice bran pellets, and High- 12 lambs fed rice bran pellets). The Rice bran pellets replaced 19 % of the barley component of the feed. Animals were group-fed at the rate of 1000 g of the supplement per head per day with ad libitum access to lucerne hay as the basal diet and water. The duration of the feeding trial was 49 days with an initial 21-day adjustment period. Results: Sire breed differences were evident for initial (p < 0.0002) and final (p < 0.0016) liveweights, hot carcass (p < 0.0030) and cold carcass (p < 0.0031) weights, as well as dressing percentage (p < 0.0078), fat thickness (p < 0.0467), yield grade (p < 0.0470) and rib eye area (p < 0.0022) with purebred Merino under-performing compared to the crossbreds. Concentrate feed conversion efficiency, costs per unit of liveweight gain and over the hooks income were comparable between treatments regardless of the observed trend where the high supplementation group tended to show lower feed intake (745.8 g/day) compared to both the control (939.9 g/day) and low supplementation groups (909.6 g/day). No significant differences (p > 0.05) were observed between treatments for live animal performance, carcass characteristics, gender and their second-order interactions. Conclusions: Results indicate that Rice bran can be utilised as a cost-effective supplementary feed source in genetically divergent sheep over a 49-day feeding period without detrimental effects on overall live animal performance or carcass characteristics.
Kang, Nam E;Ha, Ae Wha;Woo, Hye Won;Kim, Woo Kyoung
Nutrition Research and Practice
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제8권2호
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pp.158-164
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2014
BACKGROUD/OBEJECTIVES: This study aims to find out the effects of peanut sprout extracts on weight controls and protein expressions of transcription factors related to adipocyte differentiation and adipocytokine in rats under high-fat diets. MATERIALS/METHODS: Four week-old Sparague-Dawley (SD) were assigned to 4 groups; normal-fat (NF) diets (7% fat diet), high-fat (HF) diets (20% fat diet), high fat diets with low peanut sprout extract (HF + PSEL) diet (20% fat and 0.025% peanut sprout extract), and high fat diets with high peanut sprout extract (HF + PSEH) diet (20% fat and 0.05% peanut sprout extract). Body weight changes, lipid profiles in adipose tissue, and the mRNA protein expressions, such as peroxisome proliferator-activated receptor ${\gamma}$ ($PPAR{\gamma}$), CCAAT element binding protein ${\alpha}$ (C/EBP ${\alpha}$), leptin, and adiponectin, were determined. RESULTS: After 9 weeks of feeding, the HF + PSEH group had significantly less weight gains than the HF group (P < 0.05). However, the total dietary intakes or food efficiency ratios among groups were not significantly different. The weight of epididymal fat in HF + PSEH group, $3.61{\pm}0.5g$, or HF + PSEL group, $3.80{\pm}0.7g$, was significantly lower than the HF group, $4.39{\pm}0.4g$, (P < 0.05). Total lipids and total cholesterol in adipose tissue were significantly decreased in HF + PSEH group compared to those in the HF group, respectively (P < 0.05). PSEH supplementation caused AST and ALT levels to decrease when it compared to HF group, but it was not statistically significant. The protein expression of $PPAR{\gamma}$ in HF + PSEH group was significantly lower than the HF group (P < 0.05). Comparing with the HF group, the protein expression of adiponectin in HF + PSEH group was significantly increased (P < 0.05). The protein expressions of C/EBP ${\alpha}$ and leptin in HF + PSEH group were lower than the HF group, but it was not statistical significant. CONCLUSIONS: In conclusion, peanut sprout extract has anti-obesity effect by lowering the expressions of $PPAR{\gamma}$ which regulates the expression of adiponectin.
본 연구는 바이오디젤유 부산물로 제조한 공액리놀레산(Conjugated Linoleic Acid, CLA)을 비유중기 착유우에 첨가 수준을 달리하여 급여하였을 때 산유량, 유성분 및 혈액성상에 미치는 영향을 조사하고자 실시하였다. 공시동물은 비유중기 홀스타인 20두($631{\pm}25.0kg$)로 시험구당 5두를 배치하였으며, 기초사료($NE_L$ 32 Mcal/d, CP 17%)로 농후사료(12kg), 옥수수 사일리지(15kg) 및 톨페스큐+오차드그라스 건초(4kg)를 1일 2회 균등 급여하였다. CLA의 1일 급여수준은 0(대조구), 50(T1), 100(T2) 및 150g(T3)으로 달리하여 네처리군을 설정하고 예비 시험 2주와 본 시험 4주를 수행하였다. 착유우에 CLA의 급여량이 증가함에 따라 산유량과 4% FCM은 점진적으로 증가하였으나, 유지방 함량은 유의적으로 감소하였다(p<0.05). 사료중 CLA 첨가 수준이 증가함에 따라, 우유의 Stearic acid와 Oleic acid 함량은 감소한 반면, total CLA 함량은 증가하였다(p<0.05). 따라서 본 연구에서는 비유중기 착유우 사료에 바이오디젤유 부산물로 제조한 CLA를 첨가하는 것은 유생산량 증가와 유지방 내 CLA 함량 증가에 유리할 것으로 판단된다.
To study the acute effect of dietary docosahexaenoic acid (DHA, $C_{22:6}$) on the expression of adipocyte determination and differentiation-dependent factor 1 (ADD1) mRNA in pig tissues, weaned, crossbred pigs (28 d of age) were fed with either 10% (on as-fed basis) tallow (high stearic acid), soybean oil (high linoleic acid), or high DHA algal oil for 2 d. The plasma and liver DHA reflected the composition of the diet. The adipose tissue and skeletal muscle DHA did not reflect the diet in the short term feeding. The results also showed that the diet containing 10% algal DHA oil significantly decreased the total plasma cholesterol (39%) and triacylglycerol (TG; 46%) in the pigs. Soybean oil significantly decreased plasma TG (13.7%; p<0.05), but did not have an effect on plasma cholesterol. The data indicate that different dietary fatty acid compositions have different effects on plasma lipids. The ADD1 mRNA was decreased (p<0.05) in the liver of DHA oil-treated pigs compared with the tallow-treated pigs. The diets did not have significant effect on the ADD1 mRNA in adipose tissue. Addition of algal DHA oil in the diet increased acyl CoA oxidase (ACO) mRNA concentration in the liver, suggesting that dietary DHA treatment increases peroxisomal fatty acid oxidation in the liver. However, dietary soybean oil supplementation did not affect mRNA concentrations of ADD1 or ACO in the tissues of pigs. Because ADD1 increases the expression of genes associated with lipogenesis, and ACO is able to promote fatty acid oxidation, feeding DHA oil may change the utilization of fatty acids through changing the expression of ADD1 and ACO. Therefore, feeding pigs with high DHA may lead to lower body fat deposition.
Effects of dietary fatty acids and vitamin E on antioxidant vitamin status were studied in rat brain sections. Sources of dietary fat(10t%) were safflower oil(SO) poor in $\omega$3 fatty acid and mixed oil (MO) with computer-adjustd fatty acid ratios(AA/DHA=1.4, $\omega$6/$\omega$3=6.3, P/M/S=1.0/1.5/1, AA=2.%)with (ME) and without(MO) vitamin E(500mg/kg diet). Rats were fed the three kinds of diet from 3-4 wks prior to the conception. At the age of 3 & 9wks of the 2nd generation rat, antioxidant vitamins were measured in frontal cortex(FC), corpus striatum (CS), cerebellum(CB) and hippocampus(HP) using a multiwavelength, reverse phase gradient HPLC system. The levels of antioxidant vitamins converged to the similar value in all groups at 9 wks of age. Retinol, lycopene and cryptoxanthin levels of all experimental groups were found to be the highest in hippocampus at both 3 & 9wks of age. The levels of vitamin E appeared to be higher in the order of HP>CS-CB>FC in MO & ME. Beta-carotene and retinol showed the lowest level in hippocampus of vitamin E supplemented groups, even though vitamin E level tended to be higher in other sections. It seemed that vitamin E has an inhibitory action on the uptake of beta-carotene or acts as a preferred antioxidant to beta-carotene in certain section of the brain. By improving fatty acid balance (AA/DHA = 1.4, $\omega$6/$\omega$3=6.3, P/M/S=1.0/1.5/1, AA = 2%), the levels of vitamin E, retinol, lycopene & beta=carotene tended to be higher in MO than in SO, although crytoxanthin became lower at 3wks of age. In short, dietary fatty acids and vitamin E have different influence on antioxidant vitamin status in different rat brain sections. The higher levels of antioxidant vitamins in hippocampus should be pursued further in relation to behavioral development of rats.
For the study of the effect of dietary phospholipid (PL) on the lipid components of serum and organ tissues in Sprague-Dawley rats, 56 Male-rats were divided into 8 groups, which was composed of 7. One group was fed with basal diet (normal group). And other experimental groups were fed ad libitum with the mixture of carbohydrate. casein salt mixture : vitamin mixture(60:18:4:1) and at the same time fed administratively with 1 gram of phospholipid-free soybean oil, corn oil and sesame oil, and phospholipid-containing soybean oil, corn oil and sesame oil respectively After 60 days the rats were fasted for 12 hours and then decapitated to collect blood and separate organ tissues . The lipid and protein components of serum and organ tissues were analyzed. The results of this study are summarized as follows The supplementation of dietary phospholipid decreases the food efficiency ratio and the growth rate of experimental rats, it increases the level of serum phospholipid and cholesterol ester, but decreases the value of total-cholesterol (T-chol.)/PL ; it decreases the value of albumin/globulin (hyG ratio) of serum protein and it increases the level of phosphatidyl ethanolamine(PE) in serum and organ tissues. And the correlation coefficients among the contents of T-chol., of HDL-chol. and of phospholipid in serum and liver are negative in general. Therefore 1 think that we must eat dietary phospholipid unpurified from vegetable oil to prevent development of atherosclerosis and fat liver.
A total of 120 pigs $(L\;{\times}\;LW\;{\times}\;D)$ averaged 14.16 kg of body weight were reared under six dietary treatments to evaluate the effects of amino acid supplementation on their performances. Treatments were 1) 18% CP diet (control); 2) 15% CP+0.28% Lys (B, 15L); 3) B+0.06% Met (15LM); 4) B+0.13% Thr (15LT) ; 5) B+0.06% Met+0.13% Thr (15LMT); 6) B+0.06% Met+0.13% Thr+0.05% Trp (15LMTT). Each treatment had 4 replicates with 5 pigs per replicate. The daily weight gains were statistically similar in 15LMT, 15LMTT and control groups. Threonine and methionine supplementation resulted in improved growth performance and nutrient digestibilities, while tryptophan supplementation had little beneficial effect. However, the best feed conversion was found in the control group. Dry. matter and CP digestibilities were improved in the 15LMT and 15LMTT groups. Gross energy, crude fat and phosphorus digestibilities were not affected by the treatment. Among the 15% CP groups, nitrogen digestibility showed the tendency to be increased as the more synthetic amino acids were added. Dry matter and nitrogen excretions were significantly reduced by feeding low protein, amino acid fortified diets, while phosphorus excretion was not influenced. Essential amino acids digestibility was higher in 15LT, 15LMT and 15LMTT groups and lower in the control. The 15LT group showed the best lysine digestibility, and methionine digestibilities were higher in all treated groups than control one. Threonine digestibilities higher in 15LT 15LMT, and 15LMTT than the control. The result shows that threonine and methionine should be added to the diet containing 15% CP diet, fortified with lysine to get same performance of 18% CP diet.
BACKGROUND/OBJECTIVES: Nobiletin (NOB), a citrus flavonoid, is reported to have beneficial effects on cardiovascular and metabolic health. However, there is limited research investigating the effect of long-term supplementation with low-dose NOB on high-cholesterol diet (HCD)-induced hypercholesterolemia and non-obese nonalcoholic fatty liver disease (NAFLD). Therefore, we investigated the influence of NOB on hypercholesterolemia and NAFLD in HCD-fed mice. SUBJECTS/METHODS: C57BL/6J mice were fed a normal diet (ND) or HCD (35 kcal% fat, 1.25% cholesterol, 0.5% cholic acid) with or without NOB (0.02%) for 20 weeks. RESULTS: HCD feeding markedly reduced the final body weight compared to ND feeding, with no apparent energy intake differences. NOB supplementation suppressed HCD-induced weight loss without altering energy intake. Moreover, NOB significantly decreased the total cholesterol (TC) levels and the low-density lipoprotein (LDL)/very-LDL-cholesterol to TC ratio, and increased the high-density lipoprotein-cholesterol/TC ratio in plasma, compared to those for HCD feeding alone. The plasma levels of inflammatory and atherosclerosis markers (C-reactive protein, oxidized LDL, interleukin [IL]-1β, IL-6, and plasminogen activator inhibitor-1) were significantly lower, whereas those of anti-atherogenic adiponectin and paraoxonase were higher in the NOB-supplemented group than in the HCD control group. Furthermore, NOB significantly decreased liver weight, hepatic cholesterol and triglyceride contents, and lipid droplet accumulation by inhibiting messenger RNA expression of hepatic genes and activity levels of cholesterol synthesis-, esterification-, and fatty acid synthesis-associated enzymes, concomitantly enhancing fatty acid oxidation-related gene expression and enzyme activities. Dietary NOB supplementation may protect against hypercholesterolemia and NAFLD via regulation of hepatic lipid metabolism in HCD-fed mice; these effects are associated with the amelioration of inflammation and reductions in the levels of atherosclerosis-associated cardiovascular markers. CONCLUSIONS: The present study suggests that NOB may serve as a potential therapeutic agent for the treatment of HCD-induced hypercholesterolemia and NAFLD.
Objective: The objective of this study was to examine the effects of alfalfa flavonoids on the production performance, immunity, and ruminal fermentation of dairy cows. Methods: The experiments employed four primiparous Holstein cows fitted with ruminal cannulas, and used a $4{\times}4$ Latin square design. Cattle were fed total mixed ration supplemented with 0 (control group, Con), 20, 60, or 100 mg of alfalfa flavonoids extract (AFE) per kg of dairy cow body weight (BW). Results: The feed intake of the group receiving 60 mg/kg BW of AFE were significantly higher (p<0.05) than that of the group receiving 100 mg/kg BW. Milk yields and the fat, protein and lactose of milk were unaffected by AFE, while the total solids content of milk reduced (p = 0.05) linearly as AFE supplementation was increased. The somatic cell count of milk in group receiving 60 mg/kg BW of AFE was significantly lower (p<0.05) than that of the control group. Apparent total-tract digestibility of neutral detergent fiber and crude protein showed a tendency to increase (0.05<$p{\leq}0.10$) with ingestion of AFE. Methane dicarboxylic aldehyde concentration decreased (p = 0.03) linearly, whereas superoxide dismutase activity showed a tendency to increase (p = 0.10) quadratically, with increasing levels of AFE supplementation. The lymphocyte count and the proportion of lymphocytes decreased (p = 0.03) linearly, whereas the proportion of neutrophil granulocytes increased (p = 0.01) linearly with increasing levels of dietary AFE supplementation. The valeric acid/total volatile fatty acid (TVFA) ratio was increased (p = 0.01) linearly with increasing of the level of AFE supplementation, the other ruminal fermentation parameters were not affected by AFE supplementation. Relative levels of the rumen microbe Ruminococcus flavefaciens tended to decrease (p = 0.09) quadratically, whereas those of Butyrivibrio fibrisolvens showed a tendency to increase (p = 0.07) quadratically in response to AFE supplementation. Conclusion: The results of this study demonstrate that AFE supplementation can alter composition of milk, and may also have an increase tendency of nutrient digestion by regulating populations of microbes in the rumen, improve antioxidant properties by increasing antioxidant enzyme activities, and affect immunity by altering the proportions of lymphocyte and neutrophil granulocytes in dairy cows. The addition of 60 mg/kg BW of AFE to the diet of dairy cows was shown to be beneficial in this study.
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