scholarly journals Effect of substituting maize grain with cobs treated with combinations of urea and wood ash on chemical composition and in sacco degradability

2021 ◽  
Vol 48 (5) ◽  
pp. 239-244
Author(s):  
A. Abdulazeez ◽  
O. R. Madibela ◽  
C. M. Tsopito

An experiment was conducted to determine the effect of substituting maize grain with maize cobs treated with 25% urea (U) plus 75% wood ash (WA) on chemical composition and in sacco degradability. Maize grain was substituted with graded levels of 25U75WA in the dietary ingredients and the treatments were: 100M = 100% maize grain, 66M34C = 66% maize grain plus 34% treated maize cobs, 34M66C = 34% maize grain plus 66% treated maize cobs and 100C = 100% treated maize cobs. Samples were analyzed for dry matter (DM), organic matter (OM), ash, crude protein (CP), neutral detergent fibre (NDF), acid detergent fibre (ADF) and acid detergent lignin (ADL); they were incubated in saccofor 6, 12, 24, 48 and 72 hrs and their DM degradation kinetics described using the equation y = a + b ct (1- e- ). Results indicated that as maize grain is substituted with treated maize cobs, NDF, ADF and ADL also increased, however only the neutral detergent soluble (NDS) for treatment 100C was reduced. At 72 hrs of incubation, treatment 34M66C had the highest DM degradation, rapidly soluble fraction 'a' and potential degradability 'a+b'. It was concluded that maize cobs treated with combinations of urea and WA could substitute 66% of maize grain in sheep diets.     Une expérience a été menée pour déterminer l'effet de la substitution du grain de maïs par des épis de maïs traités avec 25 % d'urée (U) plus 75 % de cendre de bois (WA) sur la composition chimique et la dégradabilité du sac. Le grain de maïs a été remplacé par des niveaux gradués de 25U75WA dans les ingrédients alimentaires et les traitements étaient : et 100C = 100 % d'épis de maïs traités. Les échantillons ont été analysés pour la matière sèche (MS), la matière organique (MO), les cendres, les protéines brutes (CP), les fibres au détergent neutre (NDF), les fibres au détergent acide (ADF) et la lignine au détergent acide (ADL) ; ils ont été incubés dans sacco pour 6, 12, 24, 48 et 72 heures et leur cinétique de dégradation de la matière sèche décrite en utilisant l'équation y = a + b (1-e-ct). Les résultats ont indiqué que lorsque le grain de maïs est remplacé par des épis de maïs traités, NDF, ADF et ADL ont également augmenté, mais que seul le détergent neutre soluble (NDS) pour le traitement 100C a été réduit. À 72 heures d'incubation, le traitement 34M66C présentait la plus forte dégradation de MS, la fraction rapidement soluble « a » et la dégradabilité potentielle « a+b ». Il a été conclu que les épis de maïs traités avec des combinaisons d'urée et d'AO pouvaient remplacer 66% des grains de maïs dans l'alimentation des moutons.

2013 ◽  
Vol 58 (No. 4) ◽  
pp. 176-192 ◽  
Author(s):  
Z. Belachew ◽  
K. Yisehak ◽  
T. Taye ◽  
G.P.J. Janssens

The study was aimed at determining the chemical composition, in sacco ruminal dry matter and organic matter degradability of leaves and fruits of tropical condensed tannin rich multipurpose tree species (MPTS). The MPTS studied were Ekebergia capenesis, Ficus sycomorus, Maesa lanceolata, and Rhus glutinosa. Chemical composition of dry matter (DM), crude protein (CP), crude ash (CA), ether extract (EE), crude fibre (CF), neutral detergent fibre (NDF), non-fibre carbohydrates (NFC), and condensed tannin (CT) was determined. In sacco rumen degradability was measured using three rumen fistulated Holstein Friesian-Boran cross steers at 0, 6, 12, 24, 48, 72, and 96 h. The DM and organic matter (OM) degradability data were fitted to the equation Y = a + b(1 &ndash; e<sup>&ndash;ct</sup>). The values for each chemical constituent ranged 5.43&ndash;11.49% (CA), 7.97&ndash;17.06% (CP), 1.57&ndash;31% (EE), 12.20&ndash;27.5% (CF), 5.84&ndash;39.30% (NFC), and 7.2&ndash;16.72% (CT). Ekebergia capensis leaves had the greatest values for slowly degradable fraction (b), effective degradability (ED), and rate of degradation (c) in DM (P &lt; 0.001) whereas E. capensis fruit had significantly the greatest soluble fraction (a), potential degradability (b), and effective degradability (ED) values as compared to the a, PD, and ED values in the fruits of other plants(P &lt; 0.001). Yet in OM degradation kinetics, the greatest and least values of potential degradability (PD) were recorded for F. sycomorus (89.89%) and E. capensis (55.90%) leaves (P &lt; 0.001). Similar to the rapidly soluble fraction a, ED was found to be the greatest in fruits as compared to leaves of the plants (P &lt; 0.001). Generally variation of plant parts led to significant differences in chemical composition, DM, and OM degradability and the degradable parameters. The leaves and fruits recorded more than 60% DM and OM degradability at 24 h, which implied that they were all greatly degradable in the rumen.


2020 ◽  
Vol 12 (8) ◽  
pp. 1164-1174
Author(s):  
Ruonan Wang ◽  
Ruitao Sun ◽  
Fei Zheng ◽  
Kenan Tang ◽  
Dasen Liu

The experiment was aimed to predict the relationship between rumen degradation parameters and chemical composition, especially acid detergent lignin, and molecular structure profiles of lignin (the relative content ratio of syringyl and guaiacyl unit) of twenty-two herbaceous and leguminous forage, which were commonly used as roughage for dairy cows in the northeast of China. Analyses of the spectra of forage materials' high boiling solvent lignin samples showed that common features and specific vibrations to each unique lignin were found in the spectrum. In this paper, the spectra of materials high boiling solvent lignin demonstrated absorption at the band around 1332 cm–1 (syringyl) and 1258 cm–1 (guaiacyl). The spectra indicated that the lignin of the plant materials used in this study are H-G-S type. A broad range was found among the chemical composition for each feedstuff. The degradation kinetics characteristics among feedstuffs also had relatively large range of variation. The relative content ratio of syringyl (S) and guaiacyl (G) unit of leguminous samples positively correlated with some rumen degradation characteristics. However, there was no correlation between relative content ratio of S and G unit and degradation parameters among the herbaceous materials (p > 0.05). According to analyses, content acid detergent lignin (ADL) and relative content ratio of S and G could be the predictors of the degradation parameters expect SCP among forage. In conclusion, the relative content ratio of S and G might be potentially used to predict some of the degradation parameters (Kd CP, EDCP, SNDF) of leguminous feedstuffs.


2020 ◽  
Vol 47 (1) ◽  
pp. 246-256
Author(s):  
N. J. Ekanem ◽  
U. Okah ◽  
F. O. Ahamefule ◽  
O. J. Ifut ◽  
K. Ikwunze ◽  
...  

Enterolobium cyclocarpum leaves are less acceptable by ruminants due to their high contents of anti-nutritional factors. The effect of preserving Enterolobium cyclocarpum leaves as hay and silage or silage: hay combinations on the proximate, fibre fractions, anti-nutritional factors, minerals and vitamins compositions were investigated in this study. Six experimental treatments consisting of 100% fresh Enterolobium cyclocarpum leaves, 100% ensiled Enterolobium cyclocarpum leaves, 100% sun dried Enterolobium cyclocarpum leaves, 75% silage: 25% hay, 50% silage: 50% hay and 25% silage: 75% hay were formulated. Each treatment was replicated 3 times and analyzed for chemical composition. The crude protein content ranged from 14.70 – 22.05%, which significantly differed (p<0.05) across treatments with the highest value in the fresh leaves. The values for neutral detergent fibre ranged from 56.64 – 57.92 %, acid detergent fibre from 37.14 – 39.87 % and acid detergent lignin from 13.30 – 14.96 %, they all differed significantly (p<0.05) across treatments with highest values in the 100% ensiled treatment. Preservation as silage significantly (p<0.05) reduced the concentrations of tannin, phytate and hydrocyanic acid, while preservation as hay significantly (p<0.05) reduced the concentration of saponin. The mineral contents of the EC leaves preserved as silage, hay and silage: hay combinations (Treatments 2 - 6) compared favourably with the mineral contents of the fresh leaves (Treatment 1). Preserved EC leaves (Treatments 2 – 6) had significantly (p<0.05) higher concentrations of vitamin C (444.21 –657.60 mg/100g) than the fresh leaves (308.79mg/100g). Thus preservation of E. cyclocarpum leaves as silage or hay improved its chemical composition and reduced its contents of anti-nutritional factors.


2003 ◽  
Vol 2003 ◽  
pp. 166-166
Author(s):  
H. Fazaeli ◽  
A. Azizi ◽  
Z. A. M. Jelan ◽  
S. A. Mirhadi

Fungal treatment has been recently considered as a promising method for improving the nutritive value of straw (Zadrazil et al., 1997). Several studies have been conducted to identify species of white-rot fungi for assessing their ability to improve the nutritive value of straw (Yamakamwa et al., 1992). Since there are many species of fungi in nature, there is an interest in characterising of some species. The objectives of this experiment were to study the effect of five Pleurotus fungi on the chemical composition, in vitro digestibility and in sacco degradability of wheat straw and evaluate their effect in upgrading the nutritive value of lignicellulosic materials.


2017 ◽  
Vol 57 (7) ◽  
pp. 1512 ◽  
Author(s):  
R. P. McDonnell ◽  
M. vH. Staines ◽  
M. L. Douglas ◽  
M. J. Auldist ◽  
J. L. Jacobs ◽  
...  

This experiment compared the rumen degradability characteristics of five starch-based concentrate supplements used by Western Australia (WA) dairy producers. Six rumen-fistulated, non-lactating, Holstein-Friesian cows were used to measure the in sacco rumen degradability of maize grain, oats, wheat, sodium hydroxide-treated wheat (NaOH wheat) and Maximize® (a commercial pellet commonly used by WA dairy producers). Cows were offered a basal diet of custom-made cubes (60 : 40 lucerne hay : wheat grain) at maintenance feeding level. Rumen disappearance of dry matter (DM), starch and crude protein was determined for each concentrate at 0, 1, 2, 4, 8, 16, 24, 36, 48 and 72 h, and fitted to an exponential model to estimate degradation kinetics. Effective degradability coefficients were then calculated at three rumen solid-outflow rates (0.02, 0.05 and 0.08/h). Degradability of DM at 0.08/h was lowest (P < 0.001) in maize grain (0.64) and oats (0.68) and greatest in wheat (0.83), with that in NaOH wheat (0.80) and Maximize (0.76) being intermediate. Starch degradability at 0.08/h was also lowest (P < 0.001) in maize grain (0.70), intermediate for NaOH wheat (0.83) and Maximize (0.87), and greatest for wheat (0.96) and oats (0.98). Degradability of crude protein was lowest (P = 0.001) in Maximize (0.66) and NaOH wheat (0.69), greatest in oats (0.85), with that in maize grain (0.72) and wheat (0.79) being intermediate. For producers where availability of maize grain for dairy cow rations is limited, such as in WA, these results indicated that NaOH wheat and Maximize may be considered as alternative starch sources to increase post-ruminal digestion of starch, although the magnitude of this increase will still not be as great as for maize grain.


2005 ◽  
Vol 56 (2) ◽  
pp. 187 ◽  
Author(s):  
S. Andrés ◽  
F. J. Giráldez ◽  
J. S. González ◽  
R. Peláez ◽  
N. Prieto ◽  
...  

Sixty-two herbage samples, harvested in natural meadows located in the mountains of León (north-west Spain), and characterised by a diverse botanical composition and different stages of maturity of the plants, were used to evaluate the ability of chemical composition and near infrared (NIR) spectroscopy to predict in vitro digestibility and in sacco degradability of the neutral detergent fibre (NDF) fraction. In vitro digestibility was performed as described by the Goering and Van Soest procedure. Three dry Holstein-Friesian cows fitted with a rumen cannula were used to incubate the herbage samples. A Bran+Luebbe InfraAlyzer 500 spectrophotometer was used to obtain the NIR spectra corresponding to the 62 original herbage samples. Prediction equations for the estimation of in vitro digestibility and in sacco degradability parameters of the NDF fraction were generated using NIR spectra or chemical data as independent variables. The results showed that the in vitro digestibility and kinetic parameters of degradation of the NDF fraction could not be predicted accurately, probably as a consequence of the errors corresponding to the reference methods. In contrast, these errors did not greatly affect the extent of disappearance of the NDF fraction at later times, so the accuracy of prediction of these parameters was higher, especially when NIR spectra were used as independent variables. This is probably due to the close relationship that the parameters showed with the chemical data, since this kind of information, together with some physical characteristics of the samples, is included in the NIR spectra.


2021 ◽  
Vol 48 (5) ◽  
pp. 343-352
Author(s):  
A. Abdulazeez ◽  
C. M. Tsopito ◽  
O. R. Madibela

Effect of treating maize cobs with a combination of urea and wood ash (WA) on chemical composition, in vitro gas production, and in sacco degradability were examined in a previous study. The treatments were: (100U) =100% urea +0% wood ash, (75U25WA) = 75% urea +25% wood ash, (50U50WA) = 50% urea +50% wood ash, (25U75WA) =25 % urea + 75% wood ash and (0U0WA) = Untreated maize cobs. It was concluded in the study that, treatment 25U75WA gave better results in terms of all the parameters measured. This study aimed at determining the effect of feeding Twana sheep diets whose grain was substituted with maize cobs treated with 25%U and 75%WA on nutrient intake, digestibility, nitrogen utilization, rumen NH3, pH and performance. Tswana sheep were fed experimental diet whose maize grain was substituted with graded levels of 25U75WA in the dietary ingredients and the treatments were: 100M = 100% maize grain, 66M34C = 66% maize grain plus 34% treated maize cobs, 34M66C = 34% maize grain plus 66% treated maize cobs and 100C = 100% treated maize cobs in a 4×4 Latin Square Design (4 animals were rotated in 4 periods for all the treatments). Treatment 34M66C had crude protein intake (CPI), dry matter intake (DMI), organic matter intake (OMI) and neutral detergent fibre intake (NDFI) of 0.1334, 0.9500, 0.8921 and 0.4800 kg/d respectively (P<0.05) while the crude protein digestibility (CPD), dry matter digestibility (DMD), organic matter digestibility (OMD) and neutral detergentfibre digestibility (NDFD) were 79.57, 68.02, 66.26, and 57.8% respectively (P<0.05). All the treatments had similar (P>0.05) rumen NH3 ranging from 23.55 – 24.00 mg/ml while rumen pH were different (P<0.05) and ranged from 6.117 – 6.937 however treatment 100M had lower pH. Treatment 100M and 34M66C had average daily gain (ADG) of 0.1150 and 0.1417 kg/d, respectively (P<0.05), however, treatment 100M had lower feed conversion ratio (FCR) of 5.217 compared to 7.059 (P<0.05) for 34M66C. It was concluded that farmers should include 34M66C in the diet of Tswana sheep for optimum performance and also reduce the cost of feed.     Effet du traitement des épis de maïs avec une combinaison d'urée et de cendres de bois (CB) sur la composition chimique, la production de gaz in vitro et dans la dégradabilité de SACCO ont été examinées dans une étude précédente. Les traitements étaient: (100u) = 100% urée + 0% de cendre de bois, (75U25CB) = 75% d'urée + 25% de cendres de bois, (50u50wa) = 50% d'urée + 50% de cendre de bois, (25U75CB) = 25% d'urée + 75% de cendres bois et (0U0CB) = épis de maïs non traité. Il a été conclu dans l'étude que, le traitement 25U75CB a donné de meilleurs résultats en termes de tous les paramètres mesurés. Cette étude visait à déterminer l'effet de l'alimentation des régimes de moutons Twana dont le grain a été substitué aux épis de maïs traité avec 25% U et 75% de CB sur l'apport nutritionnel, la digestibilité, l'utilisation de l'azote, le rumen NH3, la performance de la pharmacie. Les moutons de Tswana ont été nourris à une alimentation expérimentale dont le grain de maïs était substitué par des niveaux de grade de 25U75WA dans les ingrédients alimentaires et les traitements étaient les suivants: 100m = 100% de grain de maïs, 66 m34c = 66% de grain de maïs de maïs plus 34% d'épis de maïs traité, 34m66c = 34% de maïs Grain Plus 66% COBS de maïs traité et 100c = 100% cobs de maïs traités dans un design carré latin 4 × 4 (4 animaux ont été tournés en 4 périodes pour tous les traitements). Traitement 34M66C avait une consommation de protéines brutes (CPB), une consommation de matière sèche (CMS), une consommation de matière organique (CMO) et une consommation de fibres de détergents neutres de 0,1334, 0,9500, 0,8921 et 0,4800 kg / j respectivement (p <0,05) tandis que le Digestibilité des protéines brutes (DPB), digestibilité de la matière sèche (DMS), digestibilité de la matière organique (DMO) et digestibilité de fibres de détergent neutres (DFDN) étaient de 79,57, 68,02, 66,26 et 57,8% respectivement (p <0,05). Tous les traitements avaient des analgésiques similaires (p> 0,05) Rumen NH3 allant de 23,55 à 24,00 mg / ml tandis que le pH de rumen était différent (p <0,05) et allait de 6,117 - 6,937Cependant, le traitement 100M avait un pH inférieur. Traitement 100m et 34m66C avaient un gain quotidien moyen (GQM) de 0,1150 et 0,1417 kg / j, respectivement (p <0,05), cependant, le traitement 100M avait un rapport de conversion d'alimentation inférieur (CAI) de 5,217 par rapport à 7,059 (p <0,05) pour 34 m66c. Il a été conclu que les agriculteurs comprennent 34 m66c dans le régime alimentaire des moutons de Tswana pour des performances optimales et réduisent également le coût des aliments pour animaux.


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