Huang, Chengfei;Li, Ping;Ma, Xiaokang;Jaworski, Neil William;Stein, Hans-Henrik;Lai, Changhua;Zhao, Jinbiao;Zhang, Shuai
Asian-Australasian Journal of Animal Sciences
/
v.31
no.8
/
pp.1315-1324
/
2018
Objective: An experiment was conducted to investigate the effects of different diet formulations: F1 (Two complicated basal diets containing different crude protein levels plus tested feedstuff) vs F2 (A simple corn soybean meal [SBM] basal diet plus tested feedstuff) combined with total collection (TC) or chromic oxide ($Cr_2O_3$) marker or acid-insoluble ash (AIA) marker method, and freeze-dry or oven-dry (OD) technique on estimation of nutrient digestibility in diets fed to growing pigs. Methods: In F1, twelve barrows were allocated to two $6{\times}4$ Youden Squares. The treatment diets included a high protein basal (HPB) diet, a low protein basal (LPB) diet, a corn diet and a wheat bran (WB) diet formulated based on the HPB diet, and a SBM diet and a rapeseed meal (RSM) diet formulated based on the LPB diet. In F2, eight barrows were allocated to two $4{\times}4$ Latin Squares. The treatment diets included a corn basal diet, a SBM basal diet formulated based on the corn diet, and a WB diet and a RSM diet formulated based on the SBM diet. Results: Concentration of digestible (DE) and metabolizable energy (ME), and the apparent total tract digestibility of gross energy, ash, neutral detergent fibre, and acid detergent fibre determined by $Cr_2O_3$ marker method were greater than those determined by TC and AIA marker methods in HPB, LPB, and RSM diets formulated by F1 and in corn diet formulated by F2 (p<0.05). The DE values in WB and both DE and ME values in SBM and RSM estimated using F1 were greater than those estimated using F2 (p<0.05). Conclusion: From the accuracy aspect, the AIA marker or TC method combined with OD technique is recommended for determining the energy concentration and nutrient digestibility of components in diets fed to growing pigs.
Journal of The Korean Society of Grassland and Forage Science
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v.27
no.1
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pp.57-66
/
2007
This study was conducted not only to evaluate the feed value for forests and organically produced-agricultural byproducts, but also to determine effects of different hilly pasture types on feed intake, nutrient digestibility and nitrogen retention in Korean black goats. Forty black goats were employed in the feeding trial and they were separated into four treatments (forages grown in chemical fertilizer, organic forages, native plants and browses) with 10 goats for each treatment. Furthermore, 12 goats, for nutrient digestibility trial, were allotted to few treatments of three goats per treatment with a randomized complete block design. Total body weight gain and average daily gain were significantly (p<0.05) decreased in the order of forages grown in chemical fertilizer, organic forages, native plants and browses throughout the trial. Dry matter intake (DM), digestible DMI, DM digestibility and nitrogen retention were highest in forages treatment grown in chemical fertilizer (p<0.05). From the above results, Organic Korean black goats fed forest byproducts as forage source and domestic organically produced-agricultural byproducts as supplemental diets were somewhat lowered in their performance. However, it showed high stability in the sustainable farming of organic Korean black goats. As the result, the consumption of organic Korean black goats might be more desirable for medicinal use rather than fur meat as a table food. The way to increase the low performance of organic Korean black goats for supplemental diets might be the additional supply of lacking nutrients for supplemental diets
Darlis, N. Abdullah;Liang, J.B.;Jalaludin, S.;Ho, Y.W.
Asian-Australasian Journal of Animal Sciences
/
v.12
no.8
/
pp.1292-1297
/
1999
A preference test on feed and nutrient intakes were conducted on four male ($1.25{\pm}0.08kg$) and four female ($1.21{\pm}0.15kg$) lesser mouse deer (Tragulus javanicus) in captivity. Each animal was kept in individual cages placed in a well-ventilated animal house. The experiment was conducted in two weeks, where the first week was for adaptation to the feeds and the second week for measurements of nutrient intake, nutrient digestibility and nitrogen balance. The feeds offered were kangkong (Ipomoea aquatica), long bean (Vigna sinensis) and french bean (Phaseolus vulgaris) as roughages and proteinaceous feeds; sweet potato (Ipomoea batatas) and carrot (Daucus carota) as carbohydrate-rich feeds; and commercial rabbit pellet (0.3 cm diameter and 0.5 cm long) as a complete feed. The dry matter (DM) content of each feed in the order mentioned above was 7.1, 6.1, 3.9, 18.5, 6.2 and 87.6%, respectively. Long bean had the highest protein (CP) content (29.7%), while sweet potato had the lowest (6.2%). The CP contents of other feeds were within the range of 14.2 - 25.1%. Among the feeds, carrot had the lowest energy content (3.83 kcal/g) and long bean the highest (4.67 kcal/g). When fresh weight of the feed was considered, the male mouse deer consumed sweet potato the most ($86.3{\pm}12.90g/d$), but the female had a high preference for carrot ($79.2{\pm}9.76g/d$). The other feeds were consumed in lesser amounts. However, in terms of DM of the feed, the amount of commercial pellet consumed was the highest for both male ($45.0{\pm}5.10%$) and female ($44.7{\pm}7.38%$) mouse deer, followed by sweet potato ($33.1{\pm}4.43%$ and $22.4{\pm}7.73%$ for male and female, respectively). Significant (p<0.05) differences in DM, organic matter (OM) and gross energy (GE) intakes were observed between male and female mouse deer. The male consumed higher amount of DM, OM and GE than the female. The total DM intake was $40.7{\pm}2.24g/d/kg$$W^{0.75}$ for male and $35.9{\pm}1.72g/d/kg$$W^{0.75}$ for female mouse deer. Percentage digestibilities of DM, OM, CP and GE were within 72.7~80.8% and were not significantly different between male and female mouse deer. However, male mouse deer had significantly (p<0.05) higher digestible DM, OM and GE intakes than the female. Both male and female mouse deer were in positive nitrogen balance (0.6 g N/d/kg $W^{0.75}$). The male mouse deer gained $7.6{\pm}3.45g/d$, while the female gained $4.3{\pm}2.40g/d$.
Journal of the Korean Society of Food Science and Nutrition
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v.39
no.7
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pp.1078-1082
/
2010
The substantial trace mineral usabilities of seven seaweeds for nutrient evaluation have been studied. As the neutral detergent fiber (NDF) bound trace minerals have been known to be indigestible, these contents were excluded in the digestible trace mineral contents evaluation. Therefore, those four trace mineral contents in seven seaweeds and their NDF-bound contents were estimated. Consequently, the NDF-bound Zn, Cu and Mn contents, except Fe, in seven seaweeds were between 10 and 20% of total trace mineral contents, thus 80~90% of seaweeds trace minerals were observed to be substantially digestible. Although the average estimated availability of Fe in the seaweeds were relatively low, those Zn, Cu and Mn were high in relative to those total contents. Thus, even with consideration of their digestibility, seaweeds could be one of good sources of trace minerals for human nutrition because of their high availabilities of Zn, Cu and Mn.
Journal of The Korean Society of Grassland and Forage Science
/
v.26
no.1
/
pp.25-30
/
2006
This experiment was conducted to compare the fresh yield and dry matter yield, and nutritive values of whole crop barley treated with Urea (200 kg/ha, T2) and ammonium sulfate fertilizer as 200 kg/ha (T3), 300 kg/ha (T4) and 400 kg/ha (T5) at the Bae-Ho reclaimed tideland. Korea from 2003 to 2005. Salt contents of soil in the ammonium sulfate plots (T3, T4, T5) were lower than those of T2. The fresh yields of ammonium sulfate plots (T3, T4, T5) were higher than those of T2 as 62% (p>0.05), 41% (p>0.05) and 23% (p<0.05), respectively. The dry matter yield of T3, T4 and T5 (ammonium sulfate) was significantly (p<0.05) higher at 5,080 kg/ha, 4,667 ka/ha, 4,040 kg/ha, respectively. The total digestible nutrients (TDN) yield tends to have a similar result. Crude protein (CP) content was highest in T3 and CP trends to decrease as the level of ammonium sulfate was increased. Total digestible nutrient (TDN) were high in T3 and T4. The sodium content of T3 and T4 were lower than T2. Based on the study, it was more desirable to use ammonium sulfate (200 kg N/ha) rather than Urea as fertilizer on reclaimed land in terms of forage production and nutritive value.
Journal of The Korean Society of Grassland and Forage Science
/
v.17
no.2
/
pp.123-134
/
1997
The effects of cutting 6equency and nitrogen fertilization on feed values of reed canarygrass were investigated in uncultivated rice paddy and the attemp was made to estimate the economical and efficient levels of nitrogen fertilization for the increased production of nutrients in reed canarygrass. The results are summarized as follows; 1. Crude protein(CP) content was higher at 1st cut of all treatments(12.5% in 3 cutting 6equency; 19, 7% in 4 cutting frequency; 22.5% in 5 cutting kquency). However, Total Digestible Nutrients(TDN) and Relative Feed Value(RFV) in 3 and 4 cutting 6equencies were higher at 3rd cut(63.5%, 126.8) and 4th cut(65.7%, 146.4) respectively in which the contents of Neutral Detergent Fiber(NDF) and Acid Detergent Fiber(ADF) were lowest. In 5 cutting frequency, 1st cut showed the highest TDN and RFV as 70.5% and 232.4 respectively. 2. The level of nitrogen fertilization affected CP content of reed canarygrass. Nitrogen fertilization of 120kgl halcut showed high CP contents of 11.4, 14.7 and 16.5% in 3, 4 and 5 cutting eequency respectively. In 3 and 4 cutting frequency, TDN and RFV were highest with nitrogen fertilization of 90kg/ha/cut where NDF and ADF were lowest, however those in 5 cutting frequency were highest with nitrogen fertilization of 30kg/ha/cut. 3. The yields of CP varied according to the number of cutting frequency and those were 0.45~0.65 in 3 cutting hquency, 0.35~0.50 in 4 cutting frequency, and 0.19~0.67tond/ha in 5 cutting 6equency respectively and TDN was 2.09~3.60, 1.64~2.77 and 0.73~2.96tons/ha respectively. 4. The ratios between the yields of CP and TDN were 5.48, 4.60 and 4.34 in 3, 4 and 5 cutting 6equency respectively and it indicates lower ratio in result of higher number of cutting 6equency. 5. Higher nitrogen fertilization increased the yields of CP and TDN. The yields of CP were higher in 5 cutting frequency as 1.55~2.62tons/ha than of 3(1.20~1.91tons/ha) and 4 cutting frequency(1.35-2.23tons/ha). The yields of TDN were 6.31~9.93, 5.99~9.99 and 7.16~10.57tons/ha in 3, 4 and 5 cutting frequency respectively. 6. The levels of nitrogen fertilization for high production efficiency of crude protein(kg CPYkg N) was estimated as 113.4~302.5kg/ha and it resulted in 1.44~2.09ton/ha of CP yields. The levels of nitrogen fertilization for high production efficiency of dry matter was 199.2-361.3kgha in which nitrogen were fertilized below 400kg/ha and it resulted in 1.64~2.17ton/ha of CP yields. 7. The levels of nitrogen fertilization for high production efficiency of total digestible nutrients(kg TDNYkg N) were 149.9~294.1kg/ha in 3 and 4 cutting kequency and it resulted in 8.66~8.89ton/ha of TDN yileds. With the levels of nitrogen fertilization for high production efficiency of dry matter of 199.2~361.3kg/ha, TDN yields were high as 8.77~9.94ton/ha.
Cho, S.B.;Lee, H.J.;Chung, I.B.;Long, H.F.;Lim, J.S.;Kim, Y.Y.;Han, In K.
Asian-Australasian Journal of Animal Sciences
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v.21
no.2
/
pp.232-236
/
2008
This experiment was performed to investigate the effects of two energy levels and four lysine:digestible energy (DE) ratios on the apparent digestibility of nutrients in finishing pigs. The experiment was conducted using a $2{\times}4$ randomized complete block (RCB) design with three replicates. Twenty-four cross-bred finishing barrows ((Landrace${\times}$Yorkshire)${\times}$Duroc) with an average body weight of $64.2{\pm}0.69kg$ were assigned to one of eight treatments. Each barrow was placed in an individual metabolism crate and dietary treatment and water was provided ad libitum. Diets were designed to contain lysine:ME ratios of 1.5, 1.8, 2.1 and 2.4 g/Mcal at 3.35 and 3.6 Mcal/kg of diet in a $4{\times}2$ factorial arrangement. Dry matter (DM), ash, Ca and P digestibility were not affected by energy density or lysine:DE ratios. Crude fat digestibility increased as the energy density increased from 3.35 to 3.6 Mcal of DE/kg. Increasing the lysine:DE ratio also increased crude protein digestibility. There were no interactions between energy density and lysine:DE ratio in terms of nutrient digestibility. Nitrogen excretion via feces was not affected by energy density and lysine:DE ratio, while nitrogen excretion via urine was significantly affected by energy density and lysine:DE ratio. The apparent digestibility of all amino acids except for isoluecine, arginine and aspartic acid as well as average values of essential amino (EAA), non-essential amino acids (NEAA) and total amino acid digestibility (p>0.05) were not affected by energy density. The apparent digestibility of all amino acids except for leucine, proline, alanine and tyrosine, NEAA and total amino acid digestibility were significantly affected by lysine: DE ratio (p<0.05). Interactive effects of energy and lysine:DE ratio also significantly affected amino acid digestibility except for isoleucine, alanine, cystine, leucine, phenylalanine, glutamine and proline (p<0.05). In conclusion, these results suggest that maintaining the appropriate lysine:DE ratio becomes more important as the energy density of the diet increases. Consequently, increasing the lysine:DE ratio can result in increased crude protein digestibility and urinary nitrogen excretion, although apparent protein digestibility and nitrogen excretion were not affected by energy density Furthermore, increasing the lysine:DE ratio also increased the apparent digestibility of essential amino acids, except for leucine, regardless of energy density. The optimum lysine:DE ratio for maximum essential amino acid digestibility of the $64.2{\pm}0.69kg$ pig is approximately 2.4 g of lysine/Mcal of DE.
To increase both the production of mushrooms and the usages of the residues (used media) for roughage, the pinchips(PC) and sawdusts(SD) of three Korean oak species were tested as cultivating media for Lentinus edodes with varing the composition of the media. The results are as follows. 1. Organic acids(tannic acid and citric acid), which were added in the PC medium to enrich the quality of mushrooms, did not increase the growths of the mycelia and the quality. 2. The mushrooms were able to be harvested from six months after beginning the cultivation. No significant differences were found among the qualities of the mushrooms produced by various treatments. 3. The contents of crude proteins(1.82-4.55%) in the used media were higher than those in woods (c.a. 0.7%), and the total digestible nutrients (44.0-46.0%) in the used medium were not much different from those in rice straws (c.a.48.0%). 4. The contents of some essential amino acids (methionine in the used medium of the tannic acid added PC or S.D. and isoleucine, phenylalanine and lysine in the used medium of the untreated PC or SD) were higher than those in the control (raw media). The contents of a few other essential amino acids (threonine, valine and arginine) were lower in the used media. Most nonessential amino acids in the used media, particularly in the used bed-log, appeared to decrease than those in the control.
Twelve adult male crossbred (Sahiwal${\times}$Holstein Friesian) cattle were distributed into four groups of three each on body weight basis. Animals were given wheat straw as a basal diet. The animals of group I and II were supplemented with concentrate mixture and animals of group III and IV were supplemented with cold processed urea molasses mineral block (UMMB). Thirty mg monensin/day/animal was supplemented to the animals of group II and 35 ppm monensin were incorporated in the UMMB supplemented to the animals of group IV. Vit.A and D mixture was given to all the animals once a week. Dry matter (DM) intake (kg/d) through wheat straw was 19.0 percent higher in the UMMB (without monensin) supplemented group (group III) than those of the concentrate mixture (without monensin) supplemented group i.e. group I. Total DM intake (kg/d) was lower in the monensin supplemented groups than those of non-supplemented groups though differences were not statistically significant. Digestible dry matter, organic matter (OM), crude protein (CP) and total digestible nutrients (TDN) intake were similar in all the groups. Average block consumption for 45 d period in the group III (0.95 kg/d) and group IV (0.84 kg/d) did not differ significantly. DM digestibility (%) was significantly (p<0.01) higher in the group II (58.9) as compared to the group I (52.7) and group III (54.0) but similar to the group IV (57.2). OM digestibility was also significantly (p<0.05) higher in the group II (63.2) as compared to that of the group I (54.9) but similar to the group III (57.8) and IV (59.2). Ether extract (EE) digestibility was significantly (p<0.01) higher in the group I (76.9) and II (80.3) as compared to the group III (59.87) and IV (55.77). Nitrogen free extract (NFE) digestibility was significantly (p<0.05) higher in the group II (62.38) as compared to that of the other groups. Crude protein (CP) and crude fibre (CF) digestibilities were not affected either due to UMMB or monensin. Nitrogen balance did also not differ significantly among the groups. However, Ca and P balance (g/d) in the group III (3.1, 1.3) and IV (3.0, 1.4) were significantly (p<0.01) higher than those of the group I (0.6, 0.2) and II (0.4, 0.3). Blood glucose (mg/100ml) was significantly (p<0.01) higher in the group II (65.2) and IV (65.2) as compared to the group I (55.2) and group III (53.9). Plasma urea-N level (mg/100 ml) in the group III (19.0) and IV (17.8) were significantly (p<0.01) higher than that of the group I (10.5) and II (12.3). So, monensin supplementation either with cold process UMMB or concentrate mixture did not show any additional effect on feed intake and digestibility but increases blood glucose level in adult cattle.
Influence of different levels of corn steep liquor (CSL) on chemical composition of urea treated wheat straw (UTWS) and its dietary effect on nutrient intake, digestibility, milk yield and its composition were studied. The 5% UTWS was ensiled with 0, 3, 6 and 9% CSL on dry matter (DM) basis. Total nitrogen and neutral detergent fiber (NDF) contents of UTWS ensiled with 0, 3, 6 and 9% CSL increased linearly with the increasing level of CSL. Increase in NDF content was due to increased neutral detergent insoluble nitrogen contents. Four experimental diets were formulated to contain 35% UTWS ensiled without CSL (control), 45 (WS45), 55 (WS55) and 65% (WS65) UTWS ensiled with 9% CSL, respectively. Dry matter, NDF and acid detergent fiber (ADF) intakes by lactating buffaloes fed diets containing varying levels of UTWS ensiled with or without CSL remained similar across all treatments. However, DM, NDF and ADF intakes as a percent of body weight and digestible DM, NDF and ADF intakes were higher in animals fed WS65 diet compared to those fed other diets. Apparent DM, crude protein (CP), NDF and ADF digestibilities were higher in diets containing UTWS ensiled with CSL compared to control. These differences may be attributed to higher rates of degradability of UTWS ensiled with 9% CSL than that ensiled without CSL. The 4% fat corrected milk and CP were statistically higher with WS65 diet compared to other diets. Percent milk fat, solid not fat and total solid remained unchanged across all treatments.
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