True metabolizable energy(TME) is believed a better indicator for animal performance than apparent metabolizable energy (AME) for excluding the endogenous energy losses from excreta, However few researches have been conducted to compare superiority of any energy systems through practical animal feeding tests. Present study was to compare the energy systems in young chicks in terms of predictability of energy intake for the birds performances including body energy retention and of methodological accuracy by evaluating reproducibility and additi-vity of energy values of feed ingredients and compound diets. Five ingredients such as yellow corn wheat soybean meal fish meal and wheat bran were measured for their various biological energy values. in the first feeding trial chicks were restric-ted-fed the basal diet at 80, 60 and 40% on weight basis of the amount of feed ingested by chicks fed ad libitum the same diet. chicks in the second trial were also restricted-fed diets at levels of 80, 70, 60 and 50% on energy basis of the amount consumed by the basak duet group fed ad libitum The diets in the latter trial were however composed of differeent formulations from the basal diet. One-week-old Single Comb White Leghorn male chicks were individually alloted in a cage on 10 cages/treatment basis and fed the diets for 14 days. Individual carcass energy was measured after the feeding trials. Coefficients of variation of energy measurements were lesser for nitrogen-corrected AME and TME(AMEn & TMEn respectively) than AME and TME values suggesting taht reprodu-cibility of energy determinations by former systems could be better than the latters. The coeffi-cients for AME and TME were almkost of the same values. Additivity obtained by the rations between the calculated values and catual measurements appeared quite satisfactory for all the energy systems. Those of AME and TME however were relatively better than the other systems. Regression coefficient ${r}^2$ between energy intake by various systems and chick performances appeared higher for TME, AMEn and TMEn than AME implying that the former systems could provide better predictability for body weight gain and energy retention than the AME. The ${r}^2$ values for TME and AMEn particularly for body weight gain were on the average 0.967 and 0.960 respectively. In conclusion TME or AMEn can be recommended as choice for dietary energy system in terms of performance predictability of the birds and of procedural convenience for the measurements.
Piao, Minyu;Jung, Da Jin Sol;Kang, Hyeok Joong;Park, Seung Ju;Lee, Jin Oh;Kim, Minsu;Kim, Hyun Jin;Kim, Do Hyun;Seo, Ja Kyeom;Jo, Cheorun;Haque, Md Najmul;Baik, Myunggi
Animal Bioscience
/
v.34
no.4
/
pp.603-612
/
2021
Objective: We have tested our hypothesis that inclusion of purified glycerol as a replacer of portions of dried distillers grain with solubles (DDGS) would affect growth performance, rumen fermentation and blood parameters, carcass and sensory traits, reducing sugar and glycogen contents, and volatile compound profiles in longissimus thoracis (LT) in Korean cattle steers. Methods: A total of 20 Korean cattle steers (27.0±0.2 months old; 647±10.5 kg body weight [BW]) were assigned to a conventional control group or a glycerol group (3.17% purified glycerol addition as a replacement for DDGS and molasses). The steers were individually allowed to receive the experimental concentrate at the daily amount of 1.5% of their individual BW and a total 1.0 of kg/d of rice straw twice daily. The feeding trial was conducted for a period of 20 weeks. Results: Glycerol supplementation (GS) increased (p = 0.001) concentrate intake. However, GS did not affect (p>0.05) average daily gain, feed efficiency, and ruminal volatile fatty acid concentrations. GS tended to increase (p≤0.10) serum glucose concentrations at the 16th and 20th weeks. GS decreased (p = 0.001) LT pH. GS did not affect (p>0.05) carcass traits and the chemical or physicochemical compositions, reducing sugar or glycogen contents, sensory traits, and most of volatile compounds in the LT. Conclusion: The inclusion of purified glycerol as a replacement for DDGS in the finishing diet did not affect growth performance, rumen fermentation parameters, and carcass quality in Korean cattle. The purified glycerol could be used as a substitute for other energy sources such as DDGS in beef cattle, depending on the price.
This study was carried out to investigate the effect of probiotics on the performance, nutrients digestibility, noxious gas emission and microflora population on the cecum of broilers. A total of 120 broilers, consisted of 4 treatments X 3 replicates X 10 broilers per replicates, were fed the experimental diets containing 0, 0.1, 0.3 and 0.5% probiotics for 5 weeks. Broilers fed the diets containing 0.1 and 0.3% probiotic had higher (p<0.05) body weight gain and feed conversion than those of the others from the 3rd to 4th week. Broilers fed 0.3% probiotic had higher (p<0.05) body weight gain and feed conversion than those of the other levels from the 5th to 6th week. Broilers fed the diets containing 0.1% and 0.3% probiotic had higher (p<0.05) body weight gain and feed conversion than those of the others from the 2nd to 6th week. Dry matter digestibility was significantly (p<0.05) improved with 0.3% probiotic. Emission of ammonia and sulfate hydrogen gas was significantly (p<0.05) decreased at 6th week. However, there was no (p<0.05) difference at the levels of 0, 0.1, 0.3 and 0.5% at the 4th weeks. There was an increase in the lactobacillus sp, but there was a decrease in the microflora population of coliforms in the cecum of broiler with 0.1% and 0.3% probiotics.
These results indicated that the compound probiotics of 0.1${\sim}$0.3% were effective in the body weight gain, feed conversion, nutrients digestibility, noxious gas emission and microflora population on the cecum in broilers.
Park, Mi-Jeong;Kim, Sang-Bum;Kim, Sook-Jin;Kim, Kyung-Mi;Choi, Song-Yi;Chang, Mi;Kim, Gi-Chang
Food Science and Preservation
/
v.24
no.7
/
pp.957-964
/
2017
The purpose of this study was to determine the optimum spray drying conditions of soft persimmon latte using response surface methodology that is a statistical procedure used for optimization studies. A central composite design was applied to investigate the effects of independent variables, inlet temperature ($X_1$), air flow rate ($X_2$), and feed flow rate ($X_3$), on responses such as yield, water absorption index, and total phenolic compounds. Statistical analysis revealed that independent variables significantly affected all the responses. A maximum yield of 8.11 g was obtained at $90^{\circ}C$ of $X_1$, 51.82 mL/min of $X_2$ and 7.00 mL/min of $X_3$. A minimum water absorption index of 0.58 was obtained at $101^{\circ}C$ of $X_1$, 60.00 mL/min of $X_2$ and 17.00 mL/min of $X_3$. A maximum total phenolic compounds of $298.02{\mu}g/mL$ was obtained at $90^{\circ}C$ of $X_1$, 43.33 mL/min of $X_2$ and 17.00 mL/min of $X_3$. In conclusion, the best spray drying conditions were as follows: $X_1$, $90^{\circ}C$; $X_2$, 53 mL/min; $X_3$, 17 mL/min. Under those optimal conditions, the powder's yield (7.46 g), water absorption index (0.54), and the content of total phenolic compounds ($294.75{\mu}g/mL$) were estimated.
A series of experiment was carried out to study the effect of commonly used dietary fat or oils on the growth, feed efficiency, nutrient utilizability, nitrogen retention and serum cholesterol of rats and chicks fed various fat or oils at the level of 10% during 12 weeks of experimentation. Fat and oils used in this experiment were also analyzed for the composition of some fatty acids. The main observations made are as follows: 1. All groups received fat or oils gained more body weight than unsupplemented control group except chicks fed fish oil and rapeseed oil although no statistical significance was found between treatments. It was found that body weight gain achieved by the rats fed soybean oil, rapeseed oil, animal fat or corn oil was much greater than other group and that achieved by the chicks fed corn oil and animal fat was greater than other vegetable oil groups, although no statistical significance was found among treatments. 2. Feed intake data indicated that corn oil group of both rats and chicks consumed considerably more feed than other groups. Whereas feed intake of fish oil groups was the lowest among the experimental animals indicating that fish oil might contain unfavorable compound that depresses the palatability. In feed efficiency, soybean oil group of rats and corn oil group of chicks were significantly better than other experimental groups. In general, addition of fat or oils in the diet improved feed effeciency of diet. 3. Nutrient utiIizabiIity and nitrogen retention data showed that fat in the experimental diet containing 10% fat or oils was absorbed better than crude fat in control diet. It was also found that there was no significant difference in nitrogen retention among treatment. 4. Liver fat content of rapeseed oil group was much higher than that of control group and other group. It was also noticed that feeding more polyunsaturated fatty acids resulted in higher content of Iiver fat. 5. Present data indicated that serum cholesterol content of rapeseed oil and sesame oil group of rat was the higher than that of control group. Serum cholesterol content of animal fat group of chicks was higher than other group. It was interesting to note that serum cholesterol content of chicken was higher than that of rats?regardless of the kind of oils received. 6. Analytical data revealed that fatty acid composition of vegetable oil was composed mainly of oleic acid and linoleic acid, whereas animal fat and fish oil were composed of saturated fatty acid such as, myristic and palmitic acid. It should be mentionted that the perilla oil contained a very large amount of linolenic acid (58.4%) comparing with that in order vegetable oils. Little arachidonic acid was detected in vegetable oil, whereas none in animal fat and. fish oil.
Ghosh, Chiranjit;Yang, Seung Hak;Kim, Jong Geun;Jeon, Tae-Il;Yoon, Byung Hyun;Lee, Jai Young;Lee, Eun Young;Choi, Seok Geun;Hwang, Seong Gu
Asian-Australasian Journal of Animal Sciences
/
v.26
no.8
/
pp.1189-1196
/
2013
Adipose tissue development and function play a critical role in the regulation of energy balance, lipid metabolism, and the pathophysiology of metabolic syndromes. Although the effect of zinc ascorbate supplementation in diabetes or glycemic control is known in humans, the underlying mechanism is not well described. Here, we investigated the effect of a zinc-chelated vitamin C (ZnC) compound on the adipogenic differentiation of 3T3-L1 preadipocytes. Treatment with ZnC for 8 d significantly promoted adipogenesis, which was characterized by increased glycerol-3-phosphate dehydrogenase activity and intracellular lipid accumulation in 3T3-L1 cells. Meanwhile, ZnC induced a pronounced up-regulation of the expression of glucose transporter type 4 (GLUT4) and the adipocyte-specific gene adipocyte protein 2 (aP2). Analysis of mRNA and protein levels further showed that ZnC increased the sequential expression of peroxisome proliferator-activated receptor gamma ($PPAR{\gamma}$) and CCAAT/enhancer-binding protein alpha (C/$EBP{\alpha}$), the key transcription factors of adipogenesis. These results indicate that ZnC could promote adipogenesis through $PPAR{\gamma}$ and C/$EBP{\alpha}$, which act synergistically for the expression of aP2 and GLUT4, leading to the generation of insulin-responsive adipocytes and can thereby be useful as a novel therapeutic agent for the management of diabetes and related metabolic disorders.
Ianni, Andrea;Martino, Camillo;Innosa, Denise;Bennato, Francesca;Grotta, Lisa;Martino, Giuseppe
Asian-Australasian Journal of Animal Sciences
/
v.33
no.5
/
pp.825-835
/
2020
Objective: The aim of the present study was to investigate the effect of dietary zinc supplementation of Friesian cows on chemical-nutritional and aromatic properties of Caciocavallo cheese after 7 days (C7) and 120 days (C120) of ripening. Methods: Twenty eight Friesian cows, balanced for parity, milk production and days in milk, were randomly assigned to 2 groups. The control group (CG) was fed with a conventional complete diet, while the experimental group (zinc group, ZG) received a daily zinc supplementation of 60 mg for kg of dry complete feed. During the experimental period, the milk yield was monitored and samples of milk and caciocavallo cheese were collected and analyzed for chemical-nutritional composition and aromatic profile. Results: The enrichment of dairy cows diet with zinc, did not influence milk yield and composition, however a marked reduction of somatic cell count was evidenced. Both in milk and cheese the ZG samples were characterized by a lower concentration of satured fatty acids and an increase in oleic, vaccenic and rumenic acids. The aromatic profile of dairy products was also positively affected by dietary zinc intake, with an increase in concentration of carboxylic acids, esters and lactones. Conclusion: The present results suggest a positive role of dietary zinc intake in improving the quality of bovine milk and related cheese, in particular for the increase in concentration of bioactive fatty acids such as rumenic acid. The changes evidenced in cheese through the analysis of the volatile profile, would be consistent with the development of interesting organoleptic properties, although further evaluations should be performed to confirm the consumer acceptability of these changes.
De la roza, Begona;Martinez, Adela;Modrono, Sagrario;Argamenteria, Alejandro
Proceedings of the Korean Society of Near Infrared Spectroscopy Conference
/
2001.06a
/
pp.1629-1629
/
2001
The knowledge of the nutrition in animal production is difficult to assess due of difficulty to determine the amount and quality of feeds intake, mainly if forages are the most important compound in the diet. It must be able to know responses to the metabolic process in lactating dairy cows earring out feeds evaluation trials. These metabolism studies with cows, requires measurements of: I) The amount of all feeds consumed. II) Excretion of faeces. III) Excretion of urine. Taking as a basis these trials, forage and total intake, dietary digestibility and balances of nitrogen and energy can be calculated. However, these feeds evaluation experiments with animals are very time consuming and expensives. The faeces excreted by animals containt undigested residues of the diet consumed. For this reason, their analysis can be an successful tool to determine the amount and quality of feed intake and other important biological parameters. The aim of this work was to know if faeces analysis by NIR could be used to determine with enough accuracy some attributes of different lactating dairy cows diets, using a global equation, developed on an heterogeneus population. For this purpose a total of 79 faecal samples from eight grass, three grass silages and two maize silages metabolic trials, on six cows each one, were used to constitute the initial population. The calibration equations were developed to predict forage and total intake, organic matter digestibility, digestibility coefficient of crude energy and digestibility energy. The combination of several trials with different diets and animal conditions gave promising results.
Coffee is known to increase pancreatic secretion of digestive enzymes. The mutagen, aflatoxin B1(AFB1) is contained in fermented foods and known to increase the specific activities of pancreatic chymotrypsin, trypsi, amylase, and lipase. Nowadays, coffee intake is increased among Koreans who have consumed relatively high amount of traditional fermented foods. Therefore, this study was performed to examine the effect of coffee and AFB1 on pancreatic exocrine function and structure. Rats were divided into 10 experimental groups. The first five groups were W(control group), LD(0.2g decaffeinated coffee/Kg B.W), HD(3g decaffeinated coffee/Kg B.W), LC(0.2g coffee/Kg B.W), and HC(3g coffee/Kg B.W). The second five groups were WA, LDA, HDA, LCA, HCA, same as first five groups in caffieine level but treated with AFB1. The result of this experiment showed that the caffeine intake did not influence significantly on the growth and feed efficiency. But water intake was increased by caffeine intake and AFB1 treatment. The weights of pancreas and liver were increased as the caffeine intake was increased. Trypsin activities were tend to increase in concentrated coffee groups(HD, HC). AFB1 treated groups showed the higher trypsin level than the AFB1 untreated groups. Amylase activities were tend to increase in concentrated coffee groups(HD, HC) of AFB1 untreated animals. AFB1 treated did not show the additional effect on the stimulated amylase secretion by coffee. Lipase activities were tend to decrease in concentrated coffee groups(HD, HC) of AFB1 untreated animals. Lipase activities were increased in the order named WA group, coffee groups, decaffeinated coffee groups in AFB1 treated animals. AFB1 treated groups showed the higher lipase level than AFB1 untreated groups. In the histologic observation of pancreas HCA group showed more dense compound tubuloalveolar glands and proliferation of nuclei than normal. The result suggested a development of a atypia which is ongoing phase to a cancer.
This study reports on the pervaporation separation of a volatile organic compound(VOC), dichloromethane(DCM) from water using fluorinated copolysiloxaneimide membranes. The copolysiloxaneimide membranes were prepared from 4,4'-(hexafluoroisopropylidene)diphthalic anhydride(6FDA) and two diamines(polysiloxane diamine(SIDA), 2-(perfluorohexyl)ethyl-3,5-diaminobenzene(PFDAB)). By varying the ratio of flexible polysiloxane diamine(SIDA)/rigid fluorinated aromatic diamine(PFDAB) from 0/100 to 100/0 mol%, five copolysiloxaneimide membranes were prepared success- fully. The pervaporation properties of DCM/water were examined in terms of two diamine monomer ratio at room temperature and the feed composition of 0.05 wt% in water. It was found that the increase in SIDA content led to high permeation flux and pervaporation selectivity towards DCM by the enhanced sorption/sorption selectivity and diffusion coefficient/diffusion selectivity due to the increased hydrophobicity and fractional free volume.
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