scholarly journals Digestibility of the lichen Stereocaulon paschale in reindeer

Rangifer ◽  
1981 ◽  
Vol 1 (1) ◽  
pp. 27
Author(s):  
Endre Jacobsen
Keyword(s):  
Chemical Composition ◽  
Protein Content ◽  
Crude Protein ◽  
Dry Matter ◽  
Apparent Digestibility ◽  
Crude Protein Content ◽  
Northern Norway ◽  
Dry Matter Digestibility

<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>

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
Keyword(s):  
Protein Content ◽  
General Equation ◽  
Crude Protein ◽  
Dry Matter ◽  
The Other ◽  
Apparent Digestibility ◽  
Crude Protein Content ◽  
Crude Fibre ◽  
Modified Equation

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.

The apparent digestibility of crude protein by the ruminant: III. The application of the general equation to rations containing urea

1957 ◽  
Vol 48 (3) ◽  
pp. 384-386 ◽  
Author(s):  
M. H. French
Keyword(s):  
Protein Content ◽  
General Equation ◽  
Crude Protein ◽  
Dry Matter ◽  
Ammonium Salts ◽  
Apparent Digestibility ◽  
Crude Protein Content ◽  
Microbial Protein ◽  
Urea Nitrogen

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.

Seasonal production of Andropogon gayanus

1971 ◽  
Vol 77 (1) ◽  
pp. 47-52 ◽  
Author(s):  
R. J. Haggar ◽  
M. B. Ahmed
Keyword(s):  
Protein Content ◽  
Crude Protein ◽  
Dry Matter ◽  
Crude Protein Content ◽  
Wet Season ◽  
Mature Leaves ◽  
Dry Matter Digestibility ◽  
Andropogon Gayanus ◽  
The Mean

SummaryThe crude protein content and in vitro dry-matter digestibility (I.V.D.) of leaves and stems of Andropogon gayanus, grouped into four different age categories, were measured at weekly intervals during the secondhalf of the 1968 wet season. The crude protein content of all categories of leaf and stem rose to a maximumat ear emergence; significant reductions occurred thereafter, especiallyin the younger categories of leaf and stem. At any point in time the younger leaves and stems contained significantly more crude protein than the older leaves and stems.Although the mean crude protein content of each stem category was significantly lower than the corresponding leaf category, the young, elongating stems had a significantly higher crude protein content than the older, mature leaves at the time of ear emergence.The mean I.V.D. of all leaf and stem categories was highest at the start of the recording period. At ear emergence the I.V.D. of the young elongating stems was at least as high as the mature leaves. After ear emergence the I.V.D. of the stems fell more rapidly than the leaves.The results support the principle of cutting at ear emergence to achieve maximum yields of digestible nutrients.

The intensive production of herbage for crop-drying: Part I. A study of the productivity of two annual crops and two leys and of their responses in yield and chemical composition to applications of nitrogenous manure

1948 ◽  
Vol 38 (4) ◽  
pp. 425-436 ◽  
Author(s):  
W. Holmes
Keyword(s):  
Chemical Composition ◽  
Protein Content ◽  
Crude Protein ◽  
Dry Matter ◽  
First Year ◽  
Crude Protein Content ◽  
Annual Crops ◽  
Intensive Production ◽  
Second Year

SUMMARY1. The importance of uniform production of herbage for crop-drying is emphasized.2. A replicated experiment is described which compared four crops, two annuals and two leys under four manurial treatments which included a control and three applications of fertilizer (3½ cwt. ‘nitrochalk’) distributed during the season in three ways.3. Vetches yielded 2500–3000 lb. dry matter per acre of 28–30% crude-protein content in two cuts.Barley yielded 2500–3000 lb. dry matter per acre of 18–21% crude protein in five to six cuts.Leys yielded 4000–5000 lb. dry matter per acre of 15–18% crude protein in four cuts in their first year, and 5000–6000 lb. dry matter per acre of 15–18% crude protein in five cuts in their second year.

Effect of stage of maturity of forage oats on crude protein content and dry-matter yield

1984 ◽  
Vol 102 (1) ◽  
pp. 251-252 ◽  
Author(s):  
A. Haile
Keyword(s):  
Chemical Composition ◽  
Protein Content ◽  
Crude Protein ◽  
Dry Matter ◽  
Tropical Climate ◽  
Protein Yield ◽  
High Yield ◽  
Dry Matter Yield ◽  
Crude Protein Content ◽  
Forage Crops

The management of non-leguminous annual forage crops can affect dry matter (D.M.) yields, chemical composition, and nutritive (feeding) values largely because of the stage of maturity at which the crop is harvested. After studies for selecting high-yield forage oat varieties for a highaltitude tropical climate (Haile, 1976), it was considered necessary to look into the management of forage oats so that the time of harvesting for maximum forage and crude protein yield could be established.

The nutrition of the early-weaned calf. I. The effect on nitrogen retention of diets containing different levels of groundnut meal

1961 ◽  
Vol 3 (2) ◽  
pp. 121-126 ◽  
Author(s):  
F. G. Whitelaw ◽  
T. R. Preston ◽  
R. D. Ndumbe
Keyword(s):  
Body Weight ◽  
Crude Protein ◽  
Dry Matter ◽  
Nitrogen Retention ◽  
Apparent Digestibility ◽  
Crude Protein Content ◽  
Dietary Nitrogen ◽  
Dry Matter Digestibility ◽  
Groundnut Meal ◽  
Different Levels

1. Nitrogen balance studies were made on eight early weaned calves given diets varying in crude protein content from 11·6% to 22·6% in dry matter.2. Nitrogen retention increased significantly as the level of crude protein increased to 19·20%; there was no further increase in nitrogen retention when the level of protein was increased to 22·6%.3. Dry matter digestibility and apparent digestibility of dietary nitrogen rose progressively as the level of crude protein increased.4. The nitrogen retention of calves fed diets adequate in protein was calculated to be 2·88 g. per 100 g. gain in body weight.

scholarly journals Assesment of Biochemical Forage Quality of Sweet Sorghum [Sorghum bicolor (L.) Moench ssp. saccharatum]

2021 ◽  
pp. 1-9
Author(s):  
Abdullah Oktem ◽  
Celal Yucel ◽  
Ayse Gulgun Oktem
Keyword(s):  
Protein Content ◽  
Sweet Sorghum ◽  
Crude Protein ◽  
Dry Matter ◽  
Forage Quality ◽  
Neutral Detergent Fiber ◽  
Net Energy ◽  
Crude Protein Content ◽  
Acid Detergent Fiber ◽  
Dry Matter Digestibility

In this study, it was aimed to determine some forage quality characteristics of sweet sorghum genotypes in semi-arid climatic conditions. The experiment was set up in randomized complete block design with 4 replicates. Research was carried out in 2016 and 2017 under Harran Plain second crop conditions, Sanliurfa, Turkey. In the study 21 genotypes of sweet sorghum were used. Crude protein content, crude ash, acid detergent fiber (ADF), neutral detergent fiber (NDF), dry matter digestibility, dry matter consumption, were determined in the study. Significant differences were found between the genotypes for tested characteristics (P≤0.01). According to average of two years, crude protein content ranged from 4.20% (Tracy) to 5.90% (USDA S.Africa), crude ash from 4.44% (Theis) to 6.90% (Topper 76), acid detergent fiber (ADF) from 27.84% (Nebraska sugar) to 36.30% (USDA-Zaire). The highest NDF value was obtained from USDA-Zaire genotype (56.49%) whereas the lowest values were seen at N98 genotype (43.11%). Dry matter digestibility values were between 60.62% (USDA-Zaire) and 67.21% (Nebraska sugar), dry matter consumption between 2.14% and 2.85%. The highest relative feed value was obtained from N98 genotype (148.95) whereas the lowest values were seen at USDA-Zaire genotype (101.00). Net energy values ranged from 1.38 Mcal kg-1 (USDA-Zaire) to 1.50 Mcal kg-1 (Nebraska sugar). Considering the properties examined in terms of feed quality, it was seen that the crude protein content and net energy value was low. But ADF, NDF, digestible dry matter, dry matter consumption and relative feed values were within acceptable levels. Nebraska sugar, Topper 76, N98, Roma, M81E, Tracy and Corina genotypes were found as the best for forage quality in sweet sorghum. It was determined that sweet sorghum can be used as a forage source.

Criteria for expressing nutritional values of subtropical grasses

1960 ◽  
Vol 11 (2) ◽  
pp. 121 ◽  
Author(s):  
R Milford
Keyword(s):  
Protein Content ◽  
Crude Protein ◽  
Dry Matter ◽  
Protein Digestibility ◽  
Poor Quality ◽  
Early Spring ◽  
Crude Protein Content ◽  
Nutritional Values ◽  
Dry Matter Digestibility ◽  
Sufficient Energy

The results from digestibility experiments made with 17 different subtropical grasses are discussed. The most suitable criteria for expressing nutritional values are crude protein content, crude protein digestibility, nitrogen balance, dry matter intake, and dry matter digestibility. Feeding standards based on starch equivalents and total digestible nutrients which are used in temperate environments are highly inaccurate when applied to these subtropical species. Large seasonal fluctuations occur in the nutritional value of subtropical grasses. At the height of the summer growing season values are very high and adequate for all forms of animal production. In the winter and early spring the grasses are generally of poor quality and are unable to meet the requirements for producing livestock. At this time the crude protein content and crude protein digestibility are low. Animals are also unable to obtain sufficient energy because the dry matter intakes and dry matter digestibilities of the grasses are low. The very low nutritive values obtained during winter and early spring usually occur after grasses have been killed by frost. Frost resistance is therefore an important criterion in selecting subtropical grasses which will maintain high nutritional values throughout the entire yew.

INFLUENCE DES CULTIVARS, DES DATES ET DES DOSES DE SEMIS SUR LE RENDEMENT ET LA QUALITÉ DE LA LUZERNE L’ANNÉE DU SEMIS

1984 ◽  
Vol 64 (2) ◽  
pp. 309-317
Author(s):  
L. BELZILE ◽  
R. RIOUX
Keyword(s):  
Medicago Sativa ◽  
Protein Content ◽  
Crude Protein ◽  
Dry Matter ◽  
Total Yield ◽  
Crude Protein Content ◽  
Dry Matter Digestibility ◽  
Yield And Quality ◽  
Medicago Sativa L ◽  
Made In

The effects of cultivars, seeding rates and dates on alfalfa (Medicago sativa L.) yield and quality in the seeding year were studied from 1971 to 1975 on a Kamouraska clay. Results showed the importance of seeding alfalfa before the end of May. Seedings made in early and in mid-May resulted in equivalent yield. Differences between cultivars were more important on the second than on the first cut. Regrowth was an important factor in the seedling year. The total yield of the Alfa cultivar is higher than Vernal and Narragansett and it is also higher for every combination of rates and seeding dates. Seeding rates were not an important factor except at the first cut where a rate of 6.7 kg/ha gave a lower yield than a rate of 13.4 kg/ha. Dry matter digestibility of Alfa is sometimes higher than for the other cultivars in the study. Late seeding generally increased the digestibility of the second cut dry matter, whereas rates of seeding have no effect on either first or second cut material. The crude protein content is not affected by seeding rates and the effects of cultivars are generally very small. With a delay in seeding dates the crude protein content of the second cut material is sometimes increased.Key words: Medicago sativa L., cultivar, date, rate

The apparent digestibility of the non-nitrogenous fraction of pig feeds

1962 ◽  
Vol 58 (1) ◽  
pp. 49-51
Author(s):  
J. Glover ◽  
H. W. Dougall
Keyword(s):  
Protein Content ◽  
Crude Protein ◽  
Dry Matter ◽  
Apparent Digestibility ◽  
Crude Protein Content ◽  
Simple Method ◽  
The Relationship

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.

Sign in / Sign up

Export Citation Format

Share Document