scholarly journals Effect of dietary concentrations of energy, crude protein, lysine, and methionine on the performance of White Leghorn layers in the tropics

2011 ◽  
Vol 20 (4) ◽  
pp. 528-541 ◽  
Author(s):  
S.V. Rama Rao ◽  
V. Ravindran ◽  
T. Srilatha ◽  
A.K. Panda ◽  
M.V.L.N. Raju
Keyword(s):  
Crude Protein ◽  
White Leghorn ◽  
The Tropics

Influence of different concentrations of metabolisable energy at constant ratio to dietary protein, lysine, methionine, calcium and phosphorus on the performance of White Leghorn layers in the tropics

2013 ◽  
Vol 53 (6) ◽  
pp. 523 ◽  
Author(s):  
S. V. Rama Rao ◽  
M. V. L. N. Raju ◽  
V. Ravindran ◽  
A. K. Panda
Keyword(s):  
Feed Efficiency ◽  
Crude Protein ◽  
Egg Production ◽  
Egg Mass ◽  
White Leghorn ◽  
Phytate Phosphorus ◽  
Nutrient Density ◽  
Bird Colony ◽  
Metabolisable Energy ◽  
The Tropics

An experiment was conducted to study the effect of nutrient density on the performance (21–72 weeks of age) of White Leghorn layers reared in an open-sided poultry house in the tropics. Six diets with graded levels (9.62–11.72 MJ/kg) of metabolisable energy (ME) with an increment of 0.42 MJ were formulated. Concentrations of crude protein, lysine, methionine, calcium and non-phytate phosphorus were kept constant to ME in all diets (15.9, 0.73, 0.35, 3.19 and 0.31 g/MJ ME, respectively). At 21 weeks of age, a total of 5280 birds was distributed randomly in 4-bird colony cages and 22 such cages in a row constituted one replicate. Each diet was fed ad libitum to 10 replicates from 21 to 72 weeks of age and performance parameters were recorded at 28-day intervals (period, 1–13). Egg production (EP) increased (P < 0.05) with increasing dietary ME and maximum response in EP was observed when dietary ME levels ranged between 10.93 and 11.69 MJ/kg during the majority of periods, while in periods 6, 7 and 8 (summer, 28−37°C), maximum EP was observed at higher ME levels in diet (11.64–11.69 MJ/kg diet). Feed intake (P < 0.01) decreased, feed efficiency (P < 0.01), egg mass (P < 0.01) and weight gain (P < 0.05) improved quadratically with increase in dietary ME concentration. Maximum feed efficiency was observed at 11.36 MJ ME/kg diet during 21–72 weeks of age. Egg shell defects were not influenced (P > 0.05) by dietary nutrient density. Mortality reduced quadratically with increase in dietary ME concentration and mortality was minimum at 11.64 MJ ME/kg diet. Based on results from the experiment it was concluded that White Leghorn layers (21–72 weeks of age) require 11.36 MJ ME/kg diet for maximum egg production, feed efficiency and egg mass with better liveability. The calculated intake of metabolisable energy, crude protein, lysine, methionine, calcium and non-phytate phosphorus in layers fed 11.30 MJ ME/kg diet was 1.157 MJ, 18.42 g, 865 mg, 409 mg, 3.68 g and 358 mg per bird per day, respectively.

In Vitro gas production assessement of Panicum maximum incubated with Leucaena leucocephala at varying proportions to predict the nutritional value for ruminants

2021 ◽  
Vol 44 (3) ◽  
pp. 371-377
Author(s):  
O. O. Falola ◽  
O. O. Olufayo
Keyword(s):  
Leucaena Leucocephala ◽  
Crude Protein ◽  
Small Ruminants ◽  
Short Chain Fatty Acids ◽  
Gas Production ◽  
Panicum Maximum ◽  
In Vitro Gas Production ◽  
Metabolisable Energy ◽  
The Tropics

The inclusion of multipurpose trees with grass such as Panicum maximum in the diet of ruminants may enhance productivity. Thus, the study was carried out to determine the proximate composition, in vitro gas production characteristics and parameters of Leucaena leucocephala and Panicum maximum at varying proportions. Five diets were formulated such that Panicum maximum was substituted with Leucaena leucocephala at different ratio: T1 (100% Panicum maximum), T2 (100% Leuceana leucocephala), T3 (50% P. maximum + 50% L. leucocephala), T4 (75% P. maximum + 25% L .leucocephala) and T5 (25% P. maximum + 75% L. leucocephala). Data were subjected to analysis of variance. Values obtained for dry matter (34.43 –35.95g/100g) decreased with the increased inclusion of Leuceana leucocephala in the diets. The crude fiber values (14.33 – 30.75g/100g) also followed the same trend while crude protein (CP) content (10.70 – 26.78g/100g) increased the inclusion of Leucaena leucocephala in the diets. There were significant (P < 0.05) differences in the treatment means of organic matter digestibility (OMD 31.93 – 37.07%), Metabolisable energy (ME 3.62 – 4.33 MJ/kgDM), short chain fatty acids (SCFA 0.04 – 0.16mL) and methane (ME 1.00 – 2.50 mL).The values (2.00 – 4.67 ml/200mgDM) obtained for immediate soluble 'a' was significantly (P < 0.05) different among the treatments. The extent of gas production (a+b) ranged from 2.00 – 4.67 mL/200mgDM, T1 (100% Panicum maximum) recorded the lowest while highest was observed in T2 (100% Leucaena leucocephala). The insoluble but degradable fraction 'b'ranged from 2.67 – 5.67ml/200mgDM, while the rate of gas production 'c' ranged from 0.04 – 0.14ml/hr. In conclusion, the enhanced values of crude protein, OMD, SCFA, and ME in the Panicum maximum and Leucaena leucocephala mixture indicate that the diets is able to meet the nutrients requirements of small ruminants in the tropics especially during the dry season.

Effects of Time of Nitrogen Application on Yield of Maize in the Tropics

1966 ◽  
Vol 2 (2) ◽  
pp. 101-105 ◽  
Author(s):  
Adeboyejo A. Fayemi
Keyword(s):  
Nitrogen Fertilizer ◽  
Crude Protein ◽  
Crude Protein Content ◽  
Nitrogen Application ◽  
Time Of Application ◽  
Cropping Season ◽  
Maize Grain ◽  
High Yields ◽  
The Tropics ◽  
Maize Ear

SummaryA four-year study from 1958 to 1962 showed that time of application of fertilizer nitrogen greatly influenced the yield of grain, the percentage of nitrogen and the crude protein of the grain under Nigerian conditions characteristic of the early maize cropping season from March to July. Split applications of nitrogen fertilizer significantly increased maize grain yield by 35 per cent when two equal doses were given one month and two months after planting; and by 31 per cent when four equal doses were supplied at planting and one month, two months and three months after seeding. Yield was significantly reduced when application was delayed two months after planting. High yields of maize were not obtained by supplying the whole of nitrogen fertilizer at one time, eidier at sowing or any time later during the growing season. However, applying all of the nitrogen fertilizer one month after planting significantly increased the percentage of nitrogen and of the crude protein content of the grain. The maize ear weight was favourably influenced by spreading the nitrogen application over the three-month period of the maize growth.

scholarly journals Accessing the nutritional composition and phytochemical screening of Panicum maximum and Newbouldia laevis leaves

2020 ◽  
Vol 40 (1) ◽  
pp. 161-167
Author(s):  
A. O. Yusuf ◽  
O. S. Sowande ◽  
O. M. Sogunle ◽  
V. A. Akinbami ◽  
O. O. Oyebanji ◽  
...  
Keyword(s):  
Veterinary Medicine ◽  
Crude Protein ◽  
Nutritional Composition ◽  
Animal Production ◽  
Panicum Maximum ◽  
Ether Extract ◽  
Phytochemical Screening ◽  
Crude Fibre ◽  
Dry Seasons ◽  
The Tropics

Ruminant livestock in most parts of the tropics graze extensively on naturally growing forages which are poor in quality. These tropical forages compared to those in the temperate, support lower levels of ruminant animal production mainly because they contain less nitrogen and are less digestible. The quality and quantity of these grasses become more critical in the dry seasons and thereby imposing more serious constraint to the development and productivity of these animals. Therefore, a study was conducted to access nutritional composition of Panicum maximum and Newbouldia laevis. Phytochemical screening of Newbouldia laevis was also carried out. Newbouldia laevis had higher crude fibre, ether extract and crude protein compared to Panicim maximum. The phytochemical screening revealed the presence of Tannin, Alkaloids, Flavonoids and Saponnin in Newbouldia laevis. The percentages of tannin, alkaloids, flavonoids and saponin in the Newbouldia laevis were 11.5, 52.07, 3.1 and 0.64, respectively while none was recorded for Panicum maximum. The relatively high crude fibre, ether extract and crude protein values for both plants s appeared satisfactory for animal production. Also, the presence of the phytochemicals in the plant showed it importance in ethno veterinary medicine and pharmacology.

scholarly journals Chemical composition of rhizoma perennial peanut (Arachis glabrata) harvested for hay in the tropics

1969 ◽  
Vol 87 (1-2) ◽  
pp. 1-18
Author(s):  
Teodoro M. Ruiz ◽  
Efraín Cancel
Keyword(s):  
Chemical Composition ◽  
Crude Protein ◽  
Nutritive Value ◽  
Forage Yield ◽  
Neutral Detergent Fiber ◽  
Tropical Grasses ◽  
Arachis Glabrata ◽  
Agricultural Experiment ◽  
The Caribbean ◽  
The Tropics

The effect of harvest interval (HI), six-, nine-, and 12-wk, and season of growth (winter, spring, summer, and fall) on crude protein (CP) and neutral detergent fiber (NDF) was studied with rhizoma perennial peanut (RPP) TARS line nos. 17033, 17050, 17052, and 17097 (PI nos. 276233, 262826, 262833, and 262839, respectively) and cv Florigraze and Arbrook at the Lajas Agricultural Experiment Substation. The same parameters were evaluated with PI nos. 276233, 262839, and cv Florigraze at the Juana Díaz Substation. The overall mean CP concentration for RPP, across HI and season of growth was 16.3 and 15.5% in the Lajas and Juana Díaz studies, respectively. In both trials, accession 17033 had the lowest (14.2%) and accession 17097 the highest (16.7%) CP values (P < 0.05). Harvest interval negatively influenced CP concentration (P < 0.01). An increase in HI from six to 12 weeks resulted in a reduction of CP from 17.3 to 15.5%, and from 16.5 to 13.7% in the Lajas and Juana Díaz studies, respectively. In the latter study the CP concentrations of forage harvested at six and nine weeks were similar. Differences in NDF among RPPs were significant (P < 0.05) in both trials. In both, accession 17033 had the highest (49.9%) and accession 17097 the lowest (48.1%) concentration. Increasing HI resulted in quadratic increases (P < 0.01) in NDF concentration. Results for the six-, nine- and 12-wk intervals were 47.8, 50.9, and 51.8% at Lajas and 45.8, 44.5, 52.0% at Juana Díaz, respectively. Season of growth did influence chemical composition of RPP; however, unlike the pattern observed in tropical grasses, the chemical composition of RPP was better in the seasons of greater forage yield (spring and summer). These results show the excellent potential for high nutritive value of RPP when grown in the Caribbean tropics. 

Nutritive contents of Allanblackia floribunda Oliv. (Guttiferae) forage in sylvopastoralism in southeastern agroecological zone of Nigeria

1970 ◽  
Vol 15 (2) ◽  
Author(s):  
A.I. Onyenso ◽  
K.A. Nwobodo ◽  
A.M. Yakubu
Keyword(s):  
Water Availability ◽  
Crude Protein ◽  
Crude Fibre ◽  
Good Source ◽  
Mineral Contents ◽  
Cross River ◽  
Cross River State ◽  
The Tropics ◽  
Rivers State ◽  
Agroecological Zone

Nutrition is one of the major constraints to livestock production in the tropics. This research aimed at assessing the nutritive contents of Allanblackia floribunda leaves from different sylvopastoralism locations in the southeastern agroecological zone of Nigeria: Ikwuano L.G.A. in Abia state, Ikom L.G.A. in Cross River state and Eleme L.G.A. in Rivers State. Leaf samples were analysed in the laboratory to determine their nutritive contents. The results of the proximate, minerals and vitamins analysis of Allanblackia floribunda leaves from Ikwuano, Ikom and Eleme as follows; crude protein: 9.51%, 8.46%, 9.86%; fat: 4.64%, 3.69%, 4.19%; Crude fibre: 17.32%, 15.24%, 17.12%; ash: 5.26%, 4.10%, 4.50%; carbohydrate: 0.46%,0.41%, 0.46% and moisture: 10.07%, 9.90%, 9.60%. For the mineral contents, calcium:14.70mg/100g,14.6970mg/100g, 15.37mg/100g; magnesium: 11.20 mg/100g, 11.33 mg/100g, 10.40 mg/100g; phosphorus: 287.88 mg/100g, 280.53 mg/100g, 290.05 mg/100g; potassium: 217.67 mg/100g, 219.12 mg/100g, 220.13 mg/100g and sodium: 21.07 mg/100g, 21.70 mg/100g, 20.67 mg/100g. For the vitamins, vitamins C: 15.25 mg/100g, 11.73 mg/100g, 14.66 mg/100g; thiamine: 0.04 mg/100g, 0.06 mg/100g, 0.04 mg/100g; riboflavin: 0.06 mg/100g, 0.06 mg/100g, 0.04 mg/100g; niacin: 0.18 mg/100g, 0.22 mg/100g, 0.16 mg/100g. The Anova results showed significant differences (p<0.05) in the proximate, minerals and vitamins contents, and such could reflect the variation in the types of soil and water availability in the areas. Generally, Allanblackia floridunda leaves are good source of forage for livestock. Keywords: Nutritive contents, Allanblackia floribunda leaves, sylvopastoralism, southeastern agroecological zone

The apparent digestibility of crude protein by the ruminant: II. The general equation and some of its implications

1957 ◽  
Vol 48 (3) ◽  
pp. 379-383 ◽  
Author(s):  
M. H. French ◽  
J. Glover ◽  
D. W. Duthie
Keyword(s):  
General Equation ◽  
Crude Protein ◽  
Protein Digestibility ◽  
Practical Applications ◽  
Total Percentage ◽  
Large Bulk ◽  
Mixed Feeds ◽  
The Tropics ◽  
First Time

The general equation, y = 70 log x − 15, connecting y, the digestibility coefficient, to x, the percentage of crude protein in the dry matter of the feed of ruminants, which was proposed in an earlier paper, has been shown to fit all the directly determined world data for cattle, sheep and goats which have been published by Schneider (1947). It is applicable to rations composed of both single and mixed feeds for it is the total percentage of crude protein in the ration which determines its digestibility.The equation is of general application, irrespective of climate or feed, and for the first time a link is provided between the large bulk of data from temperate regions and those hitherto neglected and apparently aberrant data from the tropics and subtropics.The equation adequately explains a large part of the variability of results obtained by the ‘by difference’ method. In particular, attention is drawn to its value in explaining ‘associative effects’ in mixed feeds.It would seem to have several practical applications; one being the ready determination of the average digestibility of crude protein in rapidly growing grasses and herbages at different stages of development; another being the evaluation of average crude protein digestibility of single or compound feeds in those parts of the world where adequate facilities for digestibility studies are not available. It can also be used in computing maintenance and production rations for meat and milk.

Chemical composition, dry matter and crude protein digestibilities of some tropical browse plants estimated in vitro

1998 ◽  
Vol 22 ◽  
pp. 297-299
Author(s):  
C. M. Shayo ◽  
P. Udén
Keyword(s):  
Chemical Composition ◽  
Phenolic Compounds ◽  
Crude Protein ◽  
Dry Matter ◽  
Regression Line ◽  
Dry Season ◽  
Important Food ◽  
True Digestibility ◽  
The Tropics

Browse plants are generally regarded as important food resources for ruminants in the tropics due to their high levels of nitrogen. Particularly during the dry season livestock eat browse which may contain considerable amounts of phenolic compounds including tannins at levels of up to half of the dry matter (Reed, 1986). Tannins are known to react with proteins to form rumen undegradable or totally indigestible complexes.A uniform food fraction is assumed to have the same true digestibility irrespective of source and level in the food. In the test of uniformity developed by Lucas (1964) and applied by Van Soest (1967) the digestible fraction per unit food is regressed upon its concentration in the food. The slope of the line gives its true digestibility, the intercept, the potential metabolic fraction and the variation around the regression line explains the extent of uniformity of the fraction.

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