The apparent digestibility of crude protein by the ruminant: IV. The effect of crude fibre

1957 ◽  
Vol 49 (1) ◽  
pp. 78-80 ◽  
Author(s):  
J. Glover ◽  
M. H. French

The role of crude fibre in modifying the general equation relating the digestibility coefficient of crude protein to the percentage of crude protein in the dry matter of a feed is described.It is shown that for normal average food-stuffs the effect is slight and that for all practical routine purposes the original equation will provide satisfactory estimates of the digestibility coefficient when only the crude-protein content of the dry feed is known.On the other hand, when exceptional feeds are encountered, particularly those in which the crudefibre/crude-protein relationship is abnormal, then more accurate estimates of the digestibility coefficient of crude protein can be obtained from the modified equation which is described above.

1957 ◽  
Vol 48 (3) ◽  
pp. 384-386 ◽  
Author(s):  
M. H. French

The digestibility of the crude-protein equivalent (N × 6·25) of rations containing urea conforms with the general equation, y = 70 log x − 15, correlating the dry-matter crude-protein content (x) with its coefficient of digestibility (y), irrespective of whether the urea nitrogen is absorbed as ammonium salts or converted to microbial protein prior to digestion.


2013 ◽  
Vol 59 (4) ◽  
pp. 167-177
Author(s):  
Miriam Kizeková ◽  
Ján Tomaškin ◽  
Jozef Čunderlík ◽  
Ľubica Jančová ◽  
Janka Martincová

Abstract This study highlights the effect of drought and ambient temperature on performance and herbage quality of legume monocultures and grass-legume mixtures. In a field experiment, the total dry matter yield, seasonal pattern of dry matter yield distribution, content of crude protein and crude fibre of monocultures of red clover and alfalfa and grass-legume mixtures were investigated during two consecutive dry years (2011-2012). Alfalfa cultivars Kamila and Tereza grown as monocultures or as mixtures with Festulolium braunii (cultivar Achilles) outperformed the red clover cultivars Fresko and Veles and provided a well-balanced total and seasonal dry matter yield during both years. Across all experimental years, crude protein content was significantly higher at alfalfa monocultures and mixture when compared with clover monocultures (P < 0.05). However, considerable lower content of crude fibre at clover monocultures in comparison with alfalfa ones was found. Responses of nutritive parameters of both legume species to weather variables were different. Crude protein content in red clover was independent of rainfall and temperature. In contrast, the crude fibre content correlated with temperature whereby the alfalfa monocultures showed stronger correlations (P < 0.05) than red clover monocultures.


1958 ◽  
Vol 51 (3) ◽  
pp. 289-293 ◽  
Author(s):  
J. Glover ◽  
D. W. Duthie

The apparent digestibility of crude protein by the non-ruminants, pigs, horses, rats, man and the rabbit, is shown to be related to the crude protein content of the feed, and the form of the relationship is similar to that for ruminants. With non-ruminants the apparent digestibility of crude protein is markedly depressed by the crude fibre content of the feed, whereas with ruminants the depression is only slight. The relevant equations show that pigs are much more sensitive to crude fibre than horses and rabbits, and both the latter react more markedly to crude fibre than do the ruminants.Despite the apparently significant differences between the equations for the ruminant and nonruminant herbivores, it is shown that over the normal range of crude protein and crude fibre content in feedingstuffs suitable for herbivores, the apparent digestibility coefficient of crude protein is similar for all. In other words, despite different abilities to cope with crude fibre, the herbivores as a class digest crude protein in normal feeds to much the same extent. On the other hand, the pig, an omnivore, is shown to be very markedly affected by the crude fibre content of such feeds.


1960 ◽  
Vol 55 (3) ◽  
pp. 391-394 ◽  
Author(s):  
J. Glover ◽  
H. W. Dougall

The digestibility of the non-protein constituents (almost entirely carbohydrate) of ruminant fodders is shown to be a function of the level of the crudefibre and crude-protein components.The effect of increasing crude fibre in the diet is to depress the digestibility of carbohydrate, irrespective of the level of crude protein associated with it.The effect of crude protein on the digestibility of carbohydrate is only well marked when its concentration in the dry feed lies below some 5%, that is when the feed is below approximate maintenance levels. Increasing the crude-protein content of the diet from some 2 to about 5% leads to increased digestibility of carbohydrate, but thereafter in the range of some 6–30% crude protein the protein effect is very slightly depressing to carbohydrate digestibility and is apparently quite negligible at average crude-fibre concentrations to be expected at any given level of crude protein.The implications of the various aspects of this paper are that the variability in digestibility of the non-nitrogenous component of ruminant feeds depends mainly on the respective levels of crude protein and crude fibre in the diet and to a very much lesser extent, if at all, on the species of ruminant or class of feed, be it silage, roughage or even mixture.


Author(s):  
Sonata Kazlauskaitė ◽  
Audronė Žebrauskienė ◽  
Povilas Mulerčikas ◽  
Ilona Vagusevičienė ◽  
Elena Survilienė ◽  
...  

Investigation of impact of novel plant origin products on sweet basil has been carried out in 2014–2015. The plants were grown in the poly tunnel. The test on sweet basil quality parameters was carried out in the Laboratory of the Quality of Plant Raw Materials at Aleksandras Stulginskis University applying standardized analysis methods. It has been determined that, the sweet basil comparing with the control grew best in both 2014 (80.1 cm) and 2015 (80.8 cm) when biological products Canelys, Ekoflavon and Ekoflavon + Oleorgan were applied. In 2014, the most significant absolute dry matter content (92.20%) was accumulated using Oleorgan, and in 2015, significantly the highest dry matter content (90.19%) has been accumulated using Ecoflavon + Canelys. The most significant (11.64%) crude fibre content in 2014 has been obtained under Canelys application, while in 2015, significantly the highest result (14.26%) has been collected by the control. Significantly the highest quantity of crude ash (19.44%) in 2014 has been determined when the plants were treated with Canelys, however in 2015, the best result (21.86%) has been obtained after the use of the Oleorgan. The most significant (20.07%) crude protein content in 2014 has been accumulated when the plants were treated with Ekoflavon. Therefore, in 2015 significantly the highest (16.68%) crude protein content was found in the treatment Ekoflavon + Canelys, still the result did not differ significantly from the treatment when only Ecoflavon was used. The aim of the study was to investigate the influence of some biological products on the growth and qualitative characteristics of sweet basil.


Rangifer ◽  
1981 ◽  
Vol 1 (1) ◽  
pp. 27
Author(s):  
Endre Jacobsen

<p>The digestibility of the lichen Stereocaulon paschale is studied in a digestibility trial with two reindeer calves. The lichen is collected near Kautokeino in Northern Norway. Chemical composition of the lichen is shown in Table 1. Compared with Cladonia-species the content of crude protein and ash is higher in Stereocanlon paschale The content of Ca, P and Mg in the two species is of the same magnitude, while the content of Na and CI is ten times higher in Cladonia alpestris. The estimated digestibility is shown in Table 2. The dry matter digestibility is calculated to 46, 4%, which is very low compared to Cladonia-species. The higher crude protein content in Stereocaulon paschale has resulted in a positive apparent digestibility of protein.</p><p>Tinaj&aring;k&aring;l&aring;n (Stereocanlon paschale) sulavuus porolla.</p><p>Abstract in Finnish / Yhteenveto: Tinaj&aring;k&aring;l&aring;n sulavuutta on tutkittu sulavuuskokeissa kahdella poronvasalla. Kokeessa k&aring;ytetty j&aring;k&aring;l&aring; on koottu l&aring;helt&aring; Kautokemoa. J&aring;k&aring;l&aring;n kemiallinen koosturnus on esitetty taulukossa I. Tinaj&aring;k&aring;l&aring;n sis&aring;lt&aring;m&aring; raakaproteiini- ja tuhkapitoisuus on korkeampi kuin (Cladonia-lajeilla). Ca-, P- ja Mg-pitoisuudet ovat po. j&aring;k&aring;l&aring;lajeilla samantasoiset, kun taas Cladonia alpestris sisalt&aring;m&aring;t Na- ja Cl-pitoisuudet ovat kymmenen kertaa korkeampia. Sulavuuslaskelmat esitet&aring;&aring;n taulukossa 2. Kuiva-aineen sulavuus on 46,4% mik&aring; on eritt&aring;in alhainen verrattuna Cladonia-lajien sulavuuteen. Tinaj&aring;k&aring;l&aring;n korkeampi proteiinisis&aring;lto on vaikuttanut myonteisesti valkuaisaineen sulavuuteen.</p><p>Ford&oslash;yelighet av saltlav, (Stereocaulon paschale) til rein</p><p>Abstract in Norwegian / Sammendrag: Ford&oslash;yeligheten av saltlav (Stereocaulon paschale) er unders&oslash;kt i ford&oslash;yelsesfors&oslash;k med 2 reinkalver. Lav til fors&oslash;ket er sanket n&aelig;r Kautokeino. Kjemisk sammensetning av lavet er vist i Tabell 1. Sammenlignet med Cladonia-arter er innholdet av r&aring;protein og aske h&oslash;yere i saltlavet. Innholdet av Ca. P og Mg er p&aring; samme niv&aring; i disse arter, mens innholdet av Na og Cl er ti ganger h&oslash;yere i Cladonia alpestris. Den beregnede ford&oslash;yelighet er vist i Tabell 2. For t&oslash;rrstoff er ford&oslash;yeligheten 46,4%, som er sv&aelig;rt lavt sammenlignet med ford&oslash;yeligheten for Cladonia-arter. Det h&oslash;yere proteininnholdet i saltlav har f&oslash;rt til positiv ford&oslash;yelighet for protein.</p>


2009 ◽  
pp. 87-98
Author(s):  
Gyuláné Györgyi

This study presents the yield results of some French bean varieties in organic and conventional farming. This study presents the advantage of organic farming in environmental point of view and in nutrition. Sale of organic products is insured, there is solvent demand rather in abroad than in Hungary.In Research Centre of Nyíregyháza had made organic farming since 1994, at present on 74 hectares.In the first trial, variety comparison with 9 yellow podded French beans in organic and conventional farming was conducted. Varieties: Carson, Cherokee, Debreceni sárga, Goldmine, Héliosz, Minidor, Sonesta, Sundance és Unidor. The following parameters were observed: the time of emergence and flowering, number of plants per plot, plant height and flowing green harvest. We weighed yield of the standardized, un-standardized and diseased pod fractions. The results were evaluated statistically with SPSS and Excell softwares.Emergence had all at once, but the plants of organic farming were 5 days earlier at flowering and maturity, than conventional farming.The plants in organic place were more developed than in conventional ones. Emergence was more uniform, the growth and the number of plant were square. Significant difference was not detected in plant height between two places. Most of the varieties examined had better total yield in organic place, than in conventional ones. Deviation depended on variety. ‘Sonesta’ and ‘Debreceni sárga’ had the best yield in both places. Inconventional farming choice can be expanded with ‘Unidor’ and ‘Sundance’. In organic farming choice can be expanded with ‘Minidor’ and ‘Carson’.In both places the Sonesta, Debreceni sárga and Unidor varieties had the most standardized yield per hectare. In organic place Carson variety had good pod yield because it was infected less by diseases.In the another trial we studied inside content values of some varieties on organic and conventional places. The parameters were observed: dry matter-, starch-, crude fibre-, crude protein content and amino acid content.The rates of asparagin or glutamine acid were the highest, which was followed by serin or histidine. In asparagin content was the most deviation between conventional and organic farming.Significant differences were between varieties in dry matter-, starch-, crude fibre-, and crude protein content both on organic and conventional places. Each variety had significant differences between organic and conventional farming.Starch had strong and negative correlation with dry matter, crude fibre and crude protein content.Budai piaci and Minidor varieties and BU-16 variety candidate had higher starch content and lower dry matter, crude fibre and crude protein content on organic place. Sonesta variety had almost equal dry matter content on both places, but crude protein content was higher with 10% and starch content was lower with 6% on organic place, than on conventional place. Paridor variety had almost equal starch content, but it had higher dry matter and crude protein content on organic place. 


1962 ◽  
Vol 58 (1) ◽  
pp. 49-51
Author(s):  
J. Glover ◽  
H. W. Dougall

A simple method for the estimation of the digestible non-nitrogenous fraction of normal pig feeds is described. It requires only knowledge of the digestibility coefficient of the crude protein contained in the dry matter of the feed.More accurate estimates can be obtained by applying to this method a simple correction involving only the crude protein content of the dried feed. Attention is drawn to the intimacy of the relationship between the digestibilities of the non-nitrogenous and nitrogenous components of the diet.


1959 ◽  
Vol 52 (2) ◽  
pp. 230-237 ◽  
Author(s):  
D. J. C. Jones

1. Four varieties of marrow stem kale, three of thousand headed kales, Hungry Gap Kale and Rape-Kale were grown at three centres in mid-Wales. They were sampled in the early winter period and separate leaf and stem samples analysed for the proximate constituents and minerals.2. Leaf to stem ratios were measured on both a green and dry matter basis and the latter values used to calculate whole plant values for the chemical constituents.3. The leaves of the marrow stem kales were higher in dry matter than the stems, except in the case of the Purple Stem Kale. This variety resembled the thousand headed and rape-type kales in having a higher dry matter in the stems. On a dry matter basis, the leaves of all the varieties were richer than the stems in ether extract, crude protein, total ash and all the minerals except potassium and sodium. These elements occurred to a greater extent in the stems of the fleshy stemmed marrow stem kales than in the leaves. The stems were higher in crude fibre and nitrogen-free extractives.4. The leaves of the rape-type kales were higher than those of the other varieties in silica, phosphorus and potassium. They were the best source of phosphorus on a whole plant basis. The marrow stem kales had considerably higher leaf and stem values for sodium and were markedly superior to the other varieties as a source of the element.


2018 ◽  
Vol 34 (3) ◽  
pp. 345-353 ◽  
Author(s):  
Violeta Mandic ◽  
Zorica Bijelic ◽  
Vesna Krnjaja ◽  
Aleksandar Simic ◽  
Maja Petricevic ◽  
...  

Maize is the very important silage source in the world. Timely harvesting ensure high maize forage yield and quality. Therefore, the study focused on the effects of four harvesting times (starting at the 12 August every 7 days) on yield and qualitative parameters of forage green mass of maize hybrid ZP 677. The experiment was set in Vojvodina Province, Serbia, during the 2013 and 2014 growing seasons. Plant height, stem diameter, number of leaves per plant, ear percentage, forage yield, dry matter content and crude protein content were higher, while stem percentage was lower in 2014 with favorable climatic condition. Forage yield, crude protein content, ADF and NDF decreased, while dry matter content significantly increased with delay in harvesting. The maize hybrid should be harvested when the milk line is three-quarter of the way down the grain that is in the third decade of August.


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