The energy values and nutritive value indices of Digitaria decumbens, Sorghum almum, and Phaseolus atropurpureus

1966 ◽  
Vol 17 (4) ◽  
pp. 411 ◽  
Author(s):  
DJ Minson ◽  
R Milford
Keyword(s):  
Organic Matter ◽  
Protein Content ◽  
Dry Matter ◽  
Nutritive Value ◽  
Energy Content ◽  
Regression Equations ◽  
Energy Value ◽  
Digestible Energy ◽  
Dry Matter Digestibility ◽  
Digitaria Decumbens

Two subtropical grasses, Digitaria decumbens and Sorghum almum, and one legume, Phaseolus atropurpureus (var. Siratro), cut at different ages were fed to sheep indoors to measure voluntary intake and apparent energy digestibility. Energy values of dry matter ranged from 4.11 to 4.48 kcal/g and those of organic matter from 4.47 to 4.94 kcal/g. There was a positive correlation between the energy value of organic matter and the crude protein content (r = 0.84, P < 0.01). The apparent digestibility of feed energy was correlated with species, age, and dry matter digestibility but there were significant differences between the regression equations for each species. Age was the most important factor determining the digestible energy content of the three species, and the energy value of digestible organic matter varied from 3.860 to 4.801 kcal/g. This value was positively correlated with protein content. The intake of digestible energy (kcal/kg0.75) was approximately four times as great for young cuts as for mature cuts of both grasses. Nutritive value index (N.V.I.) was closely correlated with the intake of digested energy for the three species (r > 0.998, P < 0.001), but the regression coefficient for S. almum was significantly different from those for D. decumbens and P. atropurpureus. The relative merits of the digestible energy and N.V.I. methods of expressing the energy value of pasture are discussed, and it is concluded that digestible energy is the more suitable method.

Digestible energy of wheat and oat grains when fed to sheep

1971 ◽  
Vol 11 (53) ◽  
pp. 610 ◽  
Author(s):  
MC Nottle
Keyword(s):  
Organic Matter ◽  
Dry Matter ◽  
Energy Content ◽  
The Body ◽  
Wheat Grain ◽  
Crude Fibre ◽  
Digestible Energy ◽  
Dry Matter Digestibility ◽  
Gross Energy ◽  
Feeding Trials

In pen feeding trials with eight Merino wethers, digestion coefficients were estimated for rations of cereal chaff-wheat grain-oat grain mixture, and wheat grain and oat grain fed separately at two levels of intake. Digestion coefficients for wheat and oat grain fed at 675 g/day in a double crossover experiment were dry matter 89.4, 80.8 per cent, organic matter 90.1, 82.6 per cent, protein 82.3, 77.6 per cent, ether extract 84.1, 90.9 per cent, crude fibre 33.2, 59.9 per cent, nitrogen free extractives 93.2, 85.8 per cent, energy 88.1, 81.0 per cent, total digestible nutrients 91.6, 87.1 per cent, and starch equivalents 90.7, 85.7. When these grains were fed at 785 g/day there was about 10 per cent improvement in crude fibre digestibility for both grains and 1-2 per cent improvement for other estimations with oats but not with wheat. The gross energy content of the wheat and oat grains when fed at 675 g/day was 4407 and 4700 calories/g dry matter. The digestible energy of the wheat in calories/g dry matter and organic matter was 3869 � 30, 3933 � 30 and for oats 3791 � 59, 3910 � 61. When fed at 785 g/day these values for wheat were 3850 � 50,3911 � 51 and for oats 3796 � 34, 3913 � 51. A highly significant relationship was found between energy and dry matter digestibility which for wheat diets was Y = 1.074x 7.840. r = 0.993 (P<0.001), and for oats and the mixed diet of cereal chaff-oat grain-wheat grain, Y = 0.983x + 1.550. r = 0.996 (P<0.001) where Y = energy and X = dry matter digestibility and r = the coefficient of correlation. Because of the similar digestible energy content of, and the body weight gains of sheep on, these two grains it was concluded that under the present conditions these grains were equivalent weight for weight.

scholarly journals Development of yield and nutritive value of timothy in primary growth and regrowth in northern growing conditions

2008 ◽  
Vol 19 (3) ◽  
pp. 252 ◽  
Author(s):  
O. NISSINEN ◽  
P. KALLIAINEN ◽  
L. JAUHIAINEN
Keyword(s):  
Organic Matter ◽  
Protein Content ◽  
Crude Protein ◽  
Dry Matter ◽  
Nutritive Value ◽  
Rapid Decline ◽  
Crude Protein Content ◽  
Percentage Unit ◽  
Primary Growth ◽  
Organic Matter Digestibility

The development of the yield and nutritive value of timothy (Phleum pratense L.) both in the primary growth and in the regrowth were studied at MTT Plant Production Research, a unit of MTT Agrifood Research Finland, in Rovaniemi (66°35´N) in 1999–2001. The dry matter yield and leaf:stem ratio were measured from the crop samples, and the contents of crude protein and organic matter digestibility of both whole plant samples and leaf and stem fractions were analysed. In primary growth, the most rapid increase of dry matter, 220–240 kg ha-1 per day, was measured around the beginning of the heading stage. There was a very strong positive correlation between the proportion of stems and the amount of dry matter in the primary yield. The daily growth rate of the regrowth was less than half of that of the primary growth. The fastest decrease, 1 percentage unit per day, in crude protein content was measured at the pasture stage (4–5-leaf stage). During the entire sampling period, the average daily decline in crude protein content in the primary growth of timothy was 0.65 percentage units. The main cause for the rapid decline in crude protein content was the high proportion of stem matter and its low protein content. In the regrowth, during the last four weeks before the harvest, the average daily decline in crude protein content was 0.28 percentage units.The average decline in organic matter digestibility from early pasture stage to late silage stage was 0.9 percentage units per day. The most remarkable change was noticed at the growth stage of timothy when about the half of stems were heading and it was then that the digestibility decreased by more than one percentage unit per day. The rapid decline in organic matter digestibility was due to the low digestibility of stem matter. The daily change in forage digestibility in the regrowth was very small, on average 0.11%.;

A note on the relationship between the digestible dry matter and the digestible energy content of ruminant diets

1961 ◽  
Vol 1 (1) ◽  
pp. 24 ◽  
Author(s):  
RJ Moir
Keyword(s):  
Dry Matter ◽  
Energy Content ◽  
Accurate Description ◽  
Digestible Energy ◽  
Dry Matter Digestibility ◽  
Wide Range ◽  
Ruminant Diets ◽  
The Relationship

The digestible energy content (y, in Calories per gram) of a wide range of foodstuffs for ruminants may be accurately estimated from the dry matter digestibility (x per cent) by the regression y = 0.0467 x - 0.158 (r = 0.998). It follows that dry matter digestibility itself is a simple and accurate description of the digestible energv content of foodstuffs for ruminants.

The relation between various energy parameters, chemical composition and digestibility of some pasture swards in a subtropical environment

1971 ◽  
Vol 11 (51) ◽  
pp. 397 ◽  
Author(s):  
H Jeffery
Keyword(s):  
Organic Matter ◽  
Chemical Composition ◽  
Crude Protein ◽  
Dry Matter ◽  
Energy Content ◽  
Digestible Energy ◽  
Independent Variables ◽  
Energy Parameters ◽  
Normal Acid ◽  
Subtropical Environment

Results obtained from 45 sheep metabolism trials, involving 190 sheep periods, with 11 different pasture types were analyzed to determine equations for the prediction of energy content, energy digestibility and digestible energy content. Independent variables considered in the analyses were crude protein and normal acid fibre contents and dry matter, organic matter and normal acid fibre digestibilities. In all equations significant pasture type effects were detected. The importance of these effects are discussed with particular consideration of likely biases that may result and the errors of prediction associated with overall regressions. The regressions obtained in this study are compared with a number of others reported in the literature.

The digestibility and voluntary intake by sheep of six tropical grasses

1972 ◽  
Vol 12 (54) ◽  
pp. 21 ◽  
Author(s):  
DJ Minson
Keyword(s):  
Organic Matter ◽  
Dry Matter ◽  
Grass Species ◽  
Stages Of Growth ◽  
Dry Matter Digestibility ◽  
Digitaria Decumbens ◽  
Chloris Gayana ◽  
The Mean ◽  
Voluntary Intake ◽  
The Difference

The digestibility and voluntary intake of Chloris gayana, Digitaria decumbens, Panicimum maximum var tricboglume, Paspalm dilatatum, Pennisetm Clanhtinum, and Setaria splendih were measured with sheep in metabolism pens. All grasses were grown under the same conditions and cut at the same time. Each grass was cut after growing for 28, 70, and 98 days in the summer and then again (except for P. dilatatum) after 42, 70, and 105 days in the following autumn. Four successive 28-day regrowths of each grass (two cuts only for P. dilatatum) were also harvested during the summer. All 55 cuts were artificially dried and fed at the same time, each cut being fed to eight sheep. Differences in dry matter and organic matter digestibility between grass species were relatively small with a maximum mean difference of six digestibility units between S. splendida and P. clandestinzrm. For the 28-day regrowths S. splendida was 5.1 digestibility units higher but with the more mature regrowths the difference was 6.8 digestibility units. The mean voluntary intake of dry matter of S. splendida and P. clandestinum was 9 and 11 per cent lower than that of D. decmbens (P<0.01) with the largest differences in voluntary intake between grasses occurring at the mature stages of growth. Large differences were found between grass species in both the slope and intercept of regressions relating voluntary intake to dry matter digestibility.

scholarly journals Evaluación de variedades e híbridos de maíz (Zea mays) para ensilado.

2006 ◽  
Vol 12 (2) ◽  
pp. 193
Author(s):  
Jesús Fuentes ◽  
Antonio Cruz ◽  
Lorenzo Castro ◽  
Gilberto Gloria ◽  
Sergio Rodríguez ◽  
...  
Keyword(s):  
Zea Mays ◽  
Organic Matter ◽  
Protein Content ◽  
Dry Matter ◽  
Dry Matter Digestibility ◽  
Randomized Design ◽  
Fodder Production ◽  
Completely Randomized Design ◽  
New Research

This research was conducted to evaluate 16 corn varieties cultivated for silage. The evaluation included: fodder production of green and dry matter, protein content and in vitro dry matter digestibility (IVDMD) and organic matter digestibility (IVOMD). A completely randomized design was used for statistical analysis and Tukey mean separation was used when appropiated. Fodder production as kg/ha was higher for AN446 (114028), AN445 (110993), and AN430R (106389). Dry matter fodder production was higher for AN447 (29270), AN461 (28026), VS373 (25434). Protein content (%) was higher for G4657 (7.58), AN388 (7.28), and AN448 (7.17). The best values for IVDMD (%)were for G1990 (69.14), AN446 (63.78), and AN430RR (63.50), while the higher values for IVOMD (%) were for G1990 (71.78), AN446 (65.20), and AN447 (65.12). Varieties AN446 and AN447 appeared frequently with the best values in the parameters evaluated, therefore, new research has to be performed with these varieties to confirm results found in this study.

Nutritive value of alkali-treated wheaten straw fed to sheep with supplements of either lupins or barley and urea

1981 ◽  
Vol 21 (109) ◽  
pp. 183 ◽  
Author(s):  
SC Valentine ◽  
RB Wickes
Keyword(s):  
Organic Matter ◽  
Sodium Hydroxide ◽  
Dry Matter ◽  
Nutritive Value ◽  
Digestible Energy ◽  
Ad Libitum

Untreated straw and alkali-treated straw were prepared by spraying long wheaten straw in windrows with water or a 6.6% (w/v) solution of sodium hydroxide to give a concentration of sodium hydroxide of 7g per 100 g straw. Merino wethers were fed the straws ad libitum with or without a supplement of either lupins or a mixture of barley and urea. The in vivo organic matter digestibilities (%) of the alkali-treated straw diets supplemented with lupins (61.3) or barley and urea (59.3) were greater (P<0.05) than those of the untreated straw diets supplemented with lupins (54.6) or barley and urea (55.7). The intakes of dry matter (g day-1) and digestible energy (MJ day-1), respectively, were greater (P<0.01) for the sheep offered alkali-treated straw supplemented with lupins (769, 7.7) or barley and urea (847,7.9) than for those offered untreated straw supplemented with lupins (598, 5.4) or barley and urea (639, 5.9). Sheep offered the supplemented alkali-treated straw diets produced 39% more wool and lost less (P<0.05) liveweight than sheep offered the supplemented untreated straw diets. Retention of nitrogen (g day-1) by sheep was greater (P<0.01) when the alkali-treated and untreated straws, respectively, were supplemented with barley and urea (3.6, 2.8) than with lupins (1-9, 0.9). It is concluded that a more effective method of application of sodium hydroxide must be developed if treatment of straw with sodium hydroxide is to become a routine and economic technique for use on southern Australian farms.

A note on the apparent digestibility and nutritive value of whole cottonseed given to sheep

1992 ◽  
Vol 55 (2) ◽  
pp. 285-287 ◽  
Author(s):  
A. Karalazos ◽  
D. Dotas ◽  
J. Bikos
Keyword(s):  
Organic Matter ◽  
Dry Matter ◽  
Nutritive Value ◽  
Latin Square ◽  
Apparent Digestibility ◽  
Digestible Energy ◽  
Neutral Detergent Fibre ◽  
Gross Energy ◽  
Maize Grain ◽  
Whole Cottonseed

Four castrated crossbred (Karagouniki♂ × Friesian♀) rams were used in a 4 × 4 Latin-square design to determine the apparent digestibility of four diets based on alfalfa hay and maize grain and containing varying proportions of whole cottonseed (WCS). The proportions of WCS studied were 0, 175, 355 and 530 g/kg diet dry matter (DM) and the respective apparent digestibility coefficients of DM were 0·744, 0·716, 0·689 and 0·625; of organic matter, 0·772, 0·739, 0·718 and 0·643; and of neutral-detergent fibre (NDF), 0·409, 0·481, 0·522 and 0·472. The gross energy (GE) apparent digestibility coefficients were 0·745, 0·722, 0·704 and 0·641, for the same order of treatments. The effect of the incorporation of WCS instead of maize grain in the diet in significantly reducing DM, OM and GE digestibility was evident. The lowest digestible energy value of WCS was observed in the treatment with the highest level of WCS.

scholarly journals Nutritive value and digestibility of macronutrients from sheep and alpaca skin hydrolysates as a new alternative in juvenile rainbow trout (Oncorhynchus mykiss) feeding

2020 ◽  
Vol 23 (1) ◽  
Author(s):  
Marcelino Jorge Araníbar-Araníbar ◽  
Bernardo Roque-Huanca ◽  
Harnold Segundo Portocarrero-Prado ◽  
Francisco Halley Rodríguez-Huanca ◽  
María del Pilar Blanco-Espezúa ◽  
...  
Keyword(s):  
Organic Matter ◽  
Rainbow Trout ◽  
Crude Protein ◽  
Dry Matter ◽  
Nutritive Value ◽  
Stocking Density ◽  
Quality Parameters ◽  
Apparent Digestibility ◽  
Digestible Energy ◽  
Juvenile Rainbow Trout

Abstract Background The protein source from fish meal is very important in trout feeding, but it is expensive and very scarce. Alternative nutrient sources are required to achieve sustainability as trout production rapidly grows in Peru. The objective of this research was to determine the proximate chemical composition and the apparent digestibility coefficient (ADC) of dry matter, organic matter, crude protein, crude fat, and digestible energy of hydrolyzed sheep (HSS) and alpaca (HSA) skins in juvenile rainbow trout. Methods A total of 450 fishes were randomly distributed in nine digestibility tanks, with 60.0 ± 1.32 g of initial weight and 6.4 kg/m3 of stocking density. The water quality parameters were as follows: pH 8.4, temperature 11.5 °C, and dissolved oxygen 6.2 mg/l. The skin hydrolysates were treated at 130 °C with 15 psi pressure for 120 min. Fish were fed a reference diet and an experimental diet containing 70% reference diet and 30% skin hydrolysate. The ingredients of the diets were mixed and then extruded at 95 °C with 4-mm diameter (Extruder Khal® EE800). The ADC was determined by the indirect method using insoluble ash as a non-digestible marker. Results The ADC in HSS and HSA was similar for dry matter (67.7 vs 69.1%), organic matter (66.9 vs 68.2%), crude protein (70.4 vs 70.1%), and digestible energy (3.35 vs 3.24 Mcal/kg DM), but crude fat values were different (12.3 vs 48.0%; p < 0.001, respectively). Conclusion The hydrolyzed sheep and alpaca skins had a high content of macronutrients with an acceptable apparent digestibility of nutrients, making them a viable alternative to improve the nutritive value of more economical feeds for rainbow trout feed.

scholarly journals The nutritive value of frosted wheat for sheep

2001 ◽  
Vol 41 (2) ◽  
pp. 205 ◽  
Author(s):  
E. C. Richardson ◽  
A. G. Kaiser ◽  
J. W. Piltz
Keyword(s):  
Organic Matter ◽  
Dry Matter ◽  
Nutritive Value ◽  
Control Treatment ◽  
Wheat Crop ◽  
Wheat Grain ◽  
Balance Study ◽  
Dry Matter Digestibility ◽  
Whole Wheat ◽  
Digestible Organic Matter

The effect of frosting on the nutritive value of wheat grain was determined in a digestibility experiment with sheep. Thirty-six Merino wethers were maintained on diets of lucerne chaff (30%) and whole wheat grain (70%) which was sourced from either severely frosted (SF), lightly frosted (LF) or unfrosted (UF) crops. The experiment was conducted in a repeated balance study with 8 replications per treatment diet for each of the 7 treatment diets, new animals were assigned to the chaff control (treatment diet 8). The diets were offered at the liveweight maintenance level of feeding and the digestibility of the wheat component was calculated by adjusting for the digestibility of the lucerne component. Frosting had a relatively small effect on the nutritive value of wheat grain for sheep. Dry matter digestibility for UF, LF and SF wheats did not differ significantly (0.886, 0.854 and 0.839, respectively), although the SF wheat had a lower digestibility than the UF wheat at P<0.10. The organic matter digestibility, digestible organic matter in the dry matter and estimated metabolisable energy (ME) content were all significantly (P<0.05) lower for SF compared with UF wheat grain (0.856 v. 0.908, 0.859 v. 0.915 and 13.5 v. 14.3 MJ/kg DM respectively). This study demonstrated that wheat from the severely frosted wheat crop had a lower estimated ME content of about 1 MJ/kg DM (equivalent to about 6% less ME) than wheat from the unfrosted crop fed in this study. However, the resultant ME of all samples fed fell within the normal observed ME range for wheat.

Sign in / Sign up

Export Citation Format

Share Document