Agronomic evaluation of Stylosanthes guyanensis and its use in the diet of laying hens

1978 ◽  
Vol 91 (3) ◽  
pp. 661-666 ◽  
Author(s):  
O. C. Onwudike ◽  
A. A. Adegbola
Keyword(s):  
Vitamin A ◽  
Protein Content ◽  
Crude Protein ◽  
Egg Production ◽  
Total Yield ◽  
Crude Protein Content ◽  
Crude Fibre ◽  
Carotene Content ◽  
Vitamin A Status ◽  
Cutting Height

SummaryThe responses of Stylosanthes guyanensis (Stylo) to frequency and height of cutting and the effects of feeding increasing amounts of stylo meal on egg production, yolk vitamin A, yolk colour and percentage hatchability were studied. In the agronomic study, the higher the cutting height, the higher the total yield of dry matter, yield of crude protein, yield of carotene, percentage of crude fibre and the lower the carotene and crude-protein content. A highly significant correlation between the carotene content and crude-protein content (r = +0·91) was obtained.The addition of stylo meal as more than 10% of the feed significantly (P < 0·01) depressed egg production. On the other hand, yolk colour, yolk vitamin A status and percentage hatchability were significantly improved with the feeding of stylo meal.

scholarly journals THE YIELD STABILITY AND QUALITY OF LEGUMES DURING TWO CONSECUTIVE, EXTREMELY DRY YEARS

2013 ◽  
Vol 59 (4) ◽  
pp. 167-177
Author(s):  
Miriam Kizeková ◽  
Ján Tomaškin ◽  
Jozef Čunderlík ◽  
Ľubica Jančová ◽  
Janka Martincová
Keyword(s):  
Protein Content ◽  
Crude Protein ◽  
Dry Matter ◽  
Seasonal Pattern ◽  
Red Clover ◽  
Dry Matter Yield ◽  
Crude Protein Content ◽  
Crude Fibre ◽  
Herbage Quality

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.

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 performance of laying hens on diets using barley as the main energy source

1973 ◽  
Vol 13 (62) ◽  
pp. 251 ◽  
Author(s):  
EA Dunstan
Keyword(s):  
Energy Source ◽  
Protein Content ◽  
Crude Protein ◽  
Egg Production ◽  
Laying Hens ◽  
Metabolizable Energy ◽  
The Other ◽  
Crude Protein Content ◽  
Egg Weight ◽  
Equal Energy

An experiment compared egg production on a diet using a mixture of wheat, barley, and oats as the grain portion, with a diet in which the wheat and oats were replaced with barley. A comparison between sundried and dehydrated lucerne meal was included. A second experiment compared the same formulations of barley and mixed grain diets as used in the first experiment, and a mixed grain diet of higher crude protein content. Replacing wheat and oats with barley in an otherwise unchanged diet did not significantly affect the number of eggs produced but did increase the average egg weight by 1.1 g in both experiments, significantly so in one experiment, but not in the other. Increasing the crude protein content of the mixed grain diet did not significantly affect either egg production or egg weight. Consumption of the barley diet was greater than the mixed grain diets. This increase in consumption was less than would have been expected on the basis of equal energy intakes, indicating that the metabolizable energy value of the barley used was greater than values previously published for barley. No differences were found in performance between sundried and dehydrated lucerne meal.

The composition and nutritive value of seeds hays

1944 ◽  
Vol 34 (2) ◽  
pp. 88-92 ◽  
Author(s):  
W. S. Ferguson ◽  
S. J. Watson
Keyword(s):  
Protein Content ◽  
Crude Protein ◽  
Nutritive Value ◽  
Fibre Content ◽  
First Year ◽  
Crude Protein Content ◽  
Crude Fibre ◽  
Two Samples ◽  
Crude Fibre Content ◽  
Clover Content

The examination of 108 first year seeds hays showed the average crude protein content to be 9·0 ― and the average crude fibre content 25·7 ―. The crude protein content varied from 5·0 to 13·5 ― and was directly associated with the clover content.Figures obtained on hays cut in the second and third years of the ley suggest that the protein content falls, and the crude fibre content rises, with increasing age of ley.The composition and digestibility of twenty first year hays were determined and the average figures quoted for hays of high, medium and low clover content. The starch equivalent values of these hays were high and moderately constant, varying from 33·3 to 41·2, average 36·8. The protein equivalent values varied from 1·8 to 8·4 ―, average 5·1 ―.The composition and digestibility of four samples of second year seeds hay, two samples of third year hay, one sample of second cut hay in its first year and one sample of lucerne and cocksfoot hay were also determined.

EFFECT OF COMPANION CROPS ON FORAGE ESTABLISHMENT IN SOUTH COASTAL BRITISH COLUMBIA

1990 ◽  
Vol 70 (3) ◽  
pp. 777-784 ◽  
Author(s):  
S. FREYMAN ◽  
S. BITTMAN
Keyword(s):  
British Columbia ◽  
Protein Content ◽  
Crude Protein ◽  
Total Yield ◽  
Forage Yield ◽  
Research Station ◽  
Crude Protein Content ◽  
Hordeum Vulgare L ◽  
Companion Crop ◽  
Coastal British Columbia

Field trials were conducted at the Agriculture Canada Research Station, Agassiz, B.C. from 1986 to 1988 to study, under south coastal British Columbia conditions, the use of companion crops in grass establishment. Orchardgrass (Dactylis glomerata L.), perennial ryegrass (Lolium perenne L.), or a mixture of the two was seeded with either oats (Avena sativa L.) or barley (Hordeum vulgare L.) as a companion crop, or as sole crops with weeds either allowed to grow or controlled by herbicide. First cut yields were highest and second cut yields lowest in the establishment year whenever a companion crop was used. Companion crops had no effect on third cut yield in the establishment year, nor on yield the following year. Total yield in the establishment year was highest whenever a companion crop was used due to the higher forage yield of annual cereals than perennial grass at first cut. Proportion of weeds in the first cut was lowest with a companion crop and highest where grass was seeded alone without herbicide. Crude protein content of the first cut was lowest with a companion crop while establishment method had no effect on crude protein content of subsequent cuts. In the second year crude protein content of the forage was highest with ryegrass and lowest with orchardgrass particularly if sprayed with herbicide. A companion cereal crop can be used when seeding forage grasses in south coastal British Columbia, and there is no advantage to using a herbicide for weed control on forage seedlings grown without a companion crop.Key words: Companion crop, establishment, forages, British Columbia

EFFECTS OF CUTTING TREATMENTS ON LADINO CLOVER GROWN ALONE AND IN MIXTURE WITH GRASSES: II. CHEMICAL COMPOSITION OF FORAGE

1960 ◽  
Vol 40 (2) ◽  
pp. 328-334 ◽  
Author(s):  
Paul Gervais
Keyword(s):  
Chemical Composition ◽  
Protein Content ◽  
Crude Protein ◽  
Ash Content ◽  
Crude Protein Content ◽  
Lower Content ◽  
Crude Fibre ◽  
Smooth Bromegrass ◽  
Cutting Frequency ◽  
Made In

Ladino clover grown alone and in mixture with timothy and smooth bromegrass was cut two, four and six times per season to a height of [Formula: see text] and 3 inches. Forage harvested in 1955 and 1956 from a seeding made in 1954 at the Experimental Farm, Lennoxville, Quebec, was chemically analysed.Ladino clover contained more K but less N-free extract and Ca when grown alone than when associated with a grass. Bromegrass had a higher content of crude protein, ash, P and K, and a lower content of N-free extract than timothy.Height of cutting failed to modify the chemical composition of the grasses. In the clover, close cutting reduced the fat and K contents and increased the ash content.The crude protein content increased and the crude fibre and N-free extract contents decreased in both forage fractions with increasing cutting frequencies. Fat was highest in the clover cut four times and in the grasses cut four and six times. The ash content in the clover was not significantly altered by cutting frequency but tended to decrease with increasing maturity in the grasses. The Ca content was lowest in the clover cut six times and in the grasses cut twice. In both forage fractions, the P and K contents were higher with either four or six cuttings than with two cuttings.

scholarly journals Phytase in diets with crude protein levels for commercial layers

2017 ◽  
Vol 39 (2) ◽  
pp. 163
Author(s):  
Adriana Aparecida Pereira ◽  
Otto Mack Junqueira ◽  
Dirceu Neutzling Griep Junior ◽  
Dorgival Morais de Lima Júnior ◽  
Sarah Sgavioli ◽  
...  
Keyword(s):  
Protein Content ◽  
Crude Protein ◽  
Egg Production ◽  
Egg Quality ◽  
Crude Protein Content ◽  
Feed Conversion ◽  
Egg Weight ◽  
Protein Levels ◽  
Randomized Design ◽  
And Performance

 The aim of this study was to evaluate the action of the phytase enzyme in diets formulated with variations in the crude protein content on performance and egg quality of commercial layers. A total of 336 commercial layers were housed at eight birds per cage in a 3 × 2 factorial arrangement with seven replicates. Treatments consisted of four crude-protein levels (17, 15, and 13%) and two enzyme levels (0 and 500 FTU kg-1 diet), distributed in a completely randomized design. Feed intake, egg production, feed conversion per dozen eggs and per kilogram, egg weight and mass, specific gravity, eggshell thickness, and Haugh unit were measured over five 28-day periods. The performance of commercial layers fed the diet containing 13% crude protein worsened, irrespective of phytase addition. However, at 15% crude protein, phytase inclusion did not affect feed conversion or egg weight. Inclusion of phytase leads to equal egg-quality and performance results at the dietary crude protein levels of 17 and 15%. The crude protein content of 13%, with or without phytase, is not recommended for the diet of brown-egg layers. 

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 components of ruminant feeds

1960 ◽  
Vol 55 (3) ◽  
pp. 391-394 ◽  
Author(s):  
J. Glover ◽  
H. W. Dougall
Keyword(s):  
Protein Content ◽  
Crude Protein ◽  
Apparent Digestibility ◽  
Crude Protein Content ◽  
Crude Fibre ◽  
Carbohydrate Digestibility ◽  
Protein Components

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.

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