Ondiek, J.O.;Tuitoek, J.K.;Abdulrazak, S.A.;Bareeba, F.B.;Fujihara, T.
Asian-Australasian Journal of Animal Sciences
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v.13
no.9
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pp.1249-1254
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2000
A study was conducted to evaluate the replacement value of Leucaena leucocephala and Gliricidia sepium as nitrogen sources in commercial type supplements for dairy goats. Six crossbred $(Toggenburg{\times}Saanen)$ goats at late stage of lactation were allocated to three dietary treatments in a double $3{\times}3$ Latin square design. The animals were offered rhodes grass (Chloris gayana) hay ad libitum and supplemented with either Leucaena-based concentrate (LBC), Gliricidia-based concentrate (GBC) or commercial based concentrate (CC). Voluntary food intake, milk yield and composition and changes in live weight were measured. The total dry matter (DM) intake was higher (p<0.05) in goats fed GBC than CC (1385 vs 1331 g/d). The DM intake for LBC (1343 g/d) was similar to CC (1331 g/d). The DM intake of hay was also higher (p<0.05) in goats fed GBC (834 g/d) than those receiving LBC or CC (789, 782 g/d, respectively). Animals supplemented with GBC recorded positive (11 g/d) weight gain while the other groups lost weight (13, 19 g/d) for LBC and CC respectively, although these differences were not statistically significant (p>0.05). The composition of milk were: butterfat 58, 49 and 55 g/kg; crude protein 37.0, 35.4 and 36.1 g/kg; lactose 33, 29 and 30 g/kg; Ash 8.5, 8.5 and 7.9 g/kg and total solids 136.5, 121.9 and 129.0 g/kg, for goats fed LBC, GBC and CC respectively. There were no differences in the composition of milk due to these dietary treatments. At the end of performance trial, a digestibility trial was conducted using 6 female goats allocated to the three treatments (LBC, GBC and CC) in an incomplete randomized block design and each goat received a different supplement in each of two successive periods. There were no differences in nutrient digestibility except for DM, which was higher (p<0.05) in CC compared to the other treatments (615, 622, 720 g/kg for LBC, GBC and CC, respectively). Economic analysis showed that CC diet was more expensive (0.20 US$/kg) and had a lower margin over supplementation (0.11 US$) compared to LBC and GBC (0.13 vs 0.12 US$/kg and 01.5 vs 0.12 US$, respectively). It is concluded that the Leucaena and Gliricidia could contribute as nitrogen sources in compounded diet supplements without any detrimental effects on production in dairy goats.
Ten male buffalo calves (aged 6-8 months, average body wt. $88.5{\pm}0.5kg$) were divided into two groups of five animals in each. All the animals were fed on urea-ammoniated wheat straw (4% urea, 50% moisture) along with concentrate mixture (50:50 on DM basis). In addition animals in group II were given sodium sulphate to see the effect of sulphur on the utilization of nitrogen added through urea-ammoniation. This feeding practice continued for a period of 120 d, during which fortnightly body weights were taken to assess their growth rate. A metabolism trial was conducted after 90 days of feeding to know the digestibility of nutrients and their balance. Results revealed no significant difference in the intake of DM and other nutrients in two groups. The digestibility of DM, OM, EE, NDF, ADF and cellulose was alike in animals fed ammoniated straw and ammoniated straw+sodium sulphate supplemented group, whereas the digestibilities of CP and hemicellulose was significantly (p<0.01) more in group I and II respectively. There was no significant difference in intake of nitrogen, calcium and phosphorus in 2 groups. Similarly, the balance of these 3 nutrients was positive and statistically alike in two groups. Intake and excretion of sulphur through faeces and urine was significantly (p<0.01) more in group II than in group I. Inspite of higher excretion of sulphur through faeces and urine in group II, the sulphur balance was significantly (p<0.05) more in group II than in group I, probably due to significantly (p<0.01) higher intake of sulphur in this group. There was no significant difference in total body weight gain or average daily gain between two groups, indicating that addition of sodium sulphate did not have any positive effect on these parameters. Similarly the intake of DM, DCP and TDN were also alike in two groups. The DCP and TDN values of the two diets were 8.0, 60.4 and 6.8, 56.6% respectively. Feeding cost/unit gain was alike in both the groups.
Two experiments were conducted to determine the effect of alkaline hydrogen peroxide (AHP) treatment (1% NaOH+1.5% $H_2O_2$; 1 AHPMS, 2% NaOH+1.5% $H_2O_2$; 2AHPMS) on rate and extent of degradation of mustard straw (MS) in sacco in sheep, and its in vivo digestion and ruminal fermentation characteristics when fed to sheep with concentrate (200 g per sheep daily). The treatment of straw with 1 and 2% AHP increased its sodium content by 148 and 296% to that of untreated straw (UMS). There was significant decrease in NDF and hemicellulose contents of AHP treated straw and increase in cellulose and lignin contents. Phenolic acids like ferrulic, $\rho$-coumaric and o-coumaric significantly (p<0.001) reduced by AHP treatment of mustard straw. In first experiment the in sacco degradation of DM, OM and NDF was significantly (p<0.01) greater for 2 AHPMS than for UMS at all incubation periods. The disappearance of nutrient from 1 AHPMS and 2 AHPMS treated straws continue to increase up to 96 h whereas in UMS the peak disappearance was found at 48 h. By using the equation {(y=a+b) ($1-e^{-ct}$)} the degradation rates (c) for DM, OM, and NDF were significantly higher for UMS than AHP treated straws. Level of alkali (1 and 2%) had significant effect on degradation characteristics (a, b, c and $P_{0.05}$) of DM and NDF fraction of MS. However, the effect was not pronounced on OM fraction of MS. In feeding experiment, the intake of nutrients for DM, OM, cell wall constituents and energy was higher on 2 AHPMS, whereas no effect on the digestibility of these nutrients was observed. The apparent nitrogen retention was higher (p<0.05) both in 1 and 2 AHPMS groups. Water intake by animals was significantly increased due to AHP treated mustard straw feeding. Rumen liquor pH was higher in 2 AHPMS fed animals. The $NH_3-N$ of rumen liquor was not affected by feeding of AHP treated MS based diets. Total VFA concentration was significantly (p<0.01) higher in UMS fed group. The fractional out flow rate of DM was higher (p<0.05) in animals fed on 2 AHPMS diets compared to UMS and lAHPMS fed groups. The population of large holotrichs was higher (p<0.05) on AHP treated MS fed diets compared to UMS. The study indicated that treatment of mustard straw with AHP changed its chemical composition towards a better feed. The nutritive value of 2% AHP treated mustard straw was better in terms of dry matter intake and apparent nitrogen retention. The higher in sacco DM, OM and NDF disappearance however, was not confirmed by in vivo data in this study.
This study was conducted to investigate the effects of dietary garlic and may flower powder on $CO_2$ and $CH_4$ emission by Hanwoo cows fed TMR (Total Mixed Ration) based diet. Animals were housed in a hood-type respiration chamber and the environmental temperature was maintained at $20^{\circ}C$. Gases were measured for 24 hours using the multi-detector instrument gas monitoring system (Mamos-300, Australia). The treatments composed of groups with no intake of garlic and may flower powder (Control), with intake of garlic at 0.5% of DM (T1), with intake of garlic at 1% of DM (T2), with intake of may flower at 0.5% of DM (T3), with intake of may flower at 1% of DM (T4), with intake of garlic and may flower at 0.5% of DM (T5) and with intake of garlic and may flower at 1% of DM (T6). The results indicated that $CO_2$ emission in T3 was 53% lower than that of control (p<0.05), and $CH_4$ emissions was 57% lower than control (p<0.05). Also, the hourly pattern of $CO_2$ and $CH_4$ emissions in T3 showed the least difference with all treatments. Gas emissions pattern peaked after 1 hour of feeding and this gap was wider in the afternoon than in the morning hours.
Journal of The Korean Society of Grassland and Forage Science
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v.19
no.3
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pp.197-202
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1999
This study was conducted to evaluate the dry matter yield, quality and utilization of nutrients of crabgrass (Digitaria sanguinalis L.) dominant swards as a roughage sources. Dry matter yield of stages, chemical composition, DM digestibility was obserbed, and DM intake, digestibility and utilization of nitrogen and energy by Korean native goats was determined. Average DM yield of crabgrass dominant swards was obtained 8,473kg/ha, and average contents of CP, NDF, ADF and lignin was 13.0%, 74.1%, 38.6% and 10.4%, respectively. DM intake by Korean native goats was lower for crabgrass dominant swards than for sown grass swards(P>0.05). Digestibility of DM, celluar constituents, NDF and ADF by Korean native goats was significantly lower for crabgrass dominant swards than for sown grass swards(P<0.05). Utilization of nitrogen and energy by Korean native goats was significantly lower for crabgrass dominant swards than for sown grass sward(P<0.05). Above the results, although crabgrass dominant swards was lower than in DM yield, digestibility, and utilization of N and energy, but the DM yield of crabgrass dominant swards was obtained 8,471kg/ha without fertilizer. Therefore it appears that crabgrass dominant swards have a potential to provide roughage sources.
Duckweed, an aquatic plant of the family Lemnaceae, is a rich source of protein and also contains cell wall materials. Spirodela, Lemna and Wolffia, the most available species of duckweeds were evaluated in terms of their chemical composition, the rate and extent of digestion of their dry matter(DM) and crude protein(CP) in the rumen and also their acceptability to the cattle. The three species contained CP of 284, 399 and $299g{\cdot}kg^{-1}$ DM, respectively; NDF of 471, 574 and $476g{\cdot}kg^{-1}$ DM, respectively; ADF of 215, 203 and $227g{\cdot}kg^{-1}$ DM, respectively. The rumen digestibilities of DM of the three species for 24 h were 410, 570 and $731g{\cdot}kg^{-1}$ DM, respectively and of CP were 528, 740 and $778g{\cdot}kg^{-1}$ DM, respectively. The rates of digestion of DM of the three duckweeds were 2.22, 3.63 and $5.73%h^{-1}$, respectively and of CP were 5.14, 4.22 and $6.05%h^{-1}$, respectively. Similarly, the extent of digestion of DM were 853, 723 and $926g{\cdot}kg^{-1}$ DM, respectively and of CP were 801, 874 and $943g{\cdot}kg^{-1}$ DM, respectively. Mixed duckweeds as a component of a concentrate mixture were eaten by the cattle at the rate of 10% of their live weights. It may be concluded that the dry matter and crude protein of the available duckweeds wee highly degradable in the rumen and may be fed to cattle mixing with concentrates. For the effective utilization of duck weeds as cattle feed their effect on the rumen digestion kinetics of a roughage diet need to be studied carefully.
Soybean (Glycine max) is an important ingredient of cuisines worldwide. While there is a wealth of evidence that soybean could be a good source of macronutrients and phytochemicals with healthpromoting effects, concerns regarding adverse effects have been raised. In this work, we reviewed the current clinical evidence focusing on the benefits and risks of soybean ingredients. In breast, prostate, colorectal, ovarian, and lung cancer, epidemiological studies showed an inverse association between soybean food intake and cancer risks. Soybean intake was inversely correlated with risks of type 2 diabetes mellitus (T2DM), and soy isoflavones ameliorated osteoporosis and hot flashes. Notably, soybean was one of the dietary protein sources that may reduce the risk of breast cancer and T2DM. However, soybean had adverse effects on certain types of drug treatment and caused allergies. In sum, this work provides useful considerations for planning clinical soybean research and selecting dietary protein sources for human health.
Inefficient rumen microbial fermentation is a major factor limiting intake of low quality roughage in ruminants. In this study, the effect of energy supplementation on rumen microbial fermentation, absorption of balanced digestion products and voluntary feed intake in sheep was investigated. A basal diet of a urea-treated mixture of wheaten chaff and barley straw (3:1 DM) containing 22.2 g N/kg DM was used. Four Merino-cross wethers weighing $45{\pm}4.38\;kg$ and fitted with permanent rumen and abomasal cannulae were allocated to four treatments in a $4{\times}4$ Latin square design. The dietary treatments were basal diet ($E_0$), or basal diet supplemented with sucrose (112.5 g/d) administered to the animals intra-ruminally ($E_R$), abomasally ($E_A$), or through both routes (50:50) ($E_{RA}$). Feed intake (basal and dietary) was increased (p<0.05) by sucrose supplementation through the rumen ($E_R$) or abomasum ($E_A$). However, there was no difference (p>0.05) in intake between animals on the control diet and those supplemented with sucrose through both intraruminal and abomasal routes ($E_{RA}$). The digestibility of DM and OM was highest in $E_R$ and $E_A$ supplemented animals. Although the rumen pH was reduced (p<0.001) in animals supplemented with sucrose entirely intra-ruminally ($E_R$), the in sacco degradation of barley straw in the rumen was not adversely affected (p>0.05). Intra-ruminal sucrose supplementation resulted in a higher concentration of total VFA, acetate and butyrate, while the pattern of fermentation showed a higher propionate: acetate ratio. Intra-ruminal supplementation also increased (p<0.05) the glucogenic potential (G/E) of the absorbed VFA. However, there was no difference (p>0.05) in microbial protein production between the four dietary treatments. Protozoa numbers were increased (p<0.05) by intra-ruminal supplementation of sucrose.
Journal of The Korean Society of Grassland and Forage Science
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v.5
no.3
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pp.176-179
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1985
Digestion trials were conducted to evaluate intake and digestibility of grass harvested at different dates. Silage was prepared from first-growth forage (predominantly timothy) which cutting dates; 4 June (vegetative, called early-cut) and 30 June (heading, called late-cut). The silage was fed to wethers at restricted and ad libitum levels of intake. The crude protein and crude fat of silage decreased with advancing maturity, while contents of fibre increased. DM intake of early-cut and late-cut silage were $99g/W_{kg}^{0.75}\;and\;75g/W_{kg}^{0.75}$, respectively. In digestibility and TDN, significant differences (p<0.01) between early-cut and late-cut silage were found. There was no significant difference in DM digestibility of early-cut silage between restricted and ad libitum feeding, but DM digestibility was decreased markedly in ad libitum feeding that out of account in fecal condition. Digestibility of all composition in early-cut silage, except for hemicellulose, was not observed with increasing levels of intake. Digestibility of crude protein, NDF and hemicellulose in late-cut silage were decreased (p<0.05) in ad libitum when compared with restricted feeding. Results of this study suggest that digestibility of early and late forages harvested as silage varies with levels of intake. Thus, relationship levels of intake and digestibility must be considered cautiously.
This experiment was carried out to examine the seasonal changes in feed intake and feeding behavior in Korean spotted deer under farmed condition to obtain basic information for efficient feeding management. The seasonal daily gain was the highest (p<0.05) in summer and the lowest (p<0.05) in winter. Dry matter intake (DMI) was the highest (p<0.05) in spring (2,685 g/day) and the lowest in winter (1,929 g/day). Intake of roughage in the DMI was the greatest in spring and that in winter was significantly lower (p<0.05) than in spring. Also DMI, expressed in terms of metabolic body weight ($kgW^{0.75}$), was 85.5 g, 70.6 g, 70.9 g and 65.1 g for spring, summer, autumn and winter, respectively, and thus was the highest in spring and the lowest in winter (p<0.05). Deer exhibited similar eating patterns, comparatively short and frequent periods, in all seasons. They showed comparatively intensive patterns of rumination during midnight for autumn and winter and relatively continuous patterns of chewing activity during spring and summer. There were no significant differences in seasonal eating time and ruminating time. However, exercise time was the greatest for winter and the lowest for summer and there was a significant difference (p<0.05) between summer and winter. Although not significant, eating time per 100 gDM ingested tended to be short in spring and summer and long in autumn and winter. Ruminating time per 100 gDM ingested was the shortest (p<0.05) in spring compared with in other seasons. The conclusion can be drawn that since deer have seasonal differences in feed intake and feeding habits, it is necessary to establish and develop an efficient feeding system for deer.
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