Crude Protein, Calculated from Percentage of Total Nitrogen, in Wheat and Flour

2009 ◽  
Author(s):  
AACC Technical
Keyword(s):  
Total Nitrogen ◽  
Crude Protein

scholarly journals Isotopic of nitrogen and chemical analysis of deferred grazing marandu palisadegrass fertilized with urea and poultry litter

2016 ◽  
Vol 37 (4Supl1) ◽  
pp. 2609 ◽  
Author(s):  
Vania Luzia Fournou de Lima ◽  
Carlos Ducatti ◽  
Paulo Roberto de Lima Meirelles ◽  
Luciane Do Carmo Seraphim ◽  
Marco Aurélio Factori ◽  
...  
Keyword(s):  
Stable Isotope ◽  
Total Nitrogen ◽  
Crude Protein ◽  
Organic Fertilizer ◽  
Poultry Litter ◽  
Neutral Detergent Fiber ◽  
Chicken Manure ◽  
Control Treatment ◽  
Total N ◽  
Urochloa Brizantha

This study aimed to evaluate and quantify the methodology of stable isotopes, 15N values for the organic fertilizer (chicken manure) and inorganic (urea). In addition to evaluating the incorporation rate, chemical half-life and analysis thereof, for possible traceability through the pasture fertilized with different sources of N. The technique of employment with use of tracer stable isotope 15N possible to estimate the changes in the N soil, even in the face of the various changes that take place concurrently. The methodology determines the path of both N isotopes (15N and 14N), providing information about the system and estimating N transformation rates The experimental work was conducted at the Faculty of Veterinary Medicine and Animal Science, UNESP Botucatu. An area of 576m2 was used for the parcels, which were divided between the 3 treatments with 4 repetitions each: T1 - control treatment without fertilization; T2 - fertilization with urea and T3 - organic fertilizer with poultry litter. The grass was cut every 15 days, three months after fertilization, for a total of four periods of grazing exclusion. Experimental samples were analyzed for the isotopic nitrogen and crude protein, neutral detergent fiber, acid detergent fiber, cellulose, hemicellulose and lignin composition. Degradation of poultry litter, the sand bag method was analyzed by linear regression. (delta-N-15) forage, fodder percentage of nitrogen, percentage of total nitrogen sheet, (delta-N-15) on the sheet, and (delta-N-15) at the helm were different between treatments. To this end collection, difference was observed for% Total Nitrogen, % Total N in sheet, % Total N in the trunk and% Total N at the helm. The crude protein analysis revealed significant differences between treatments, while the crude protein and lignin differ according to time after fertilization. The technique of N stable isotope effectively distinguish the composition of organic and inorganic fertilizers in deferred grazing pastures of Urochloa brizantha cv. Marandu. Forage quality was not influenced by the source of N.

Low crude protein diets for broiler chickens aged 8 to 21 days should have a 50% essential-to-total nitrogen ratio

2020 ◽  
pp. 114709
Author(s):  
Rosana C. Maia ◽  
Luiz F.T. Albino ◽  
Horácio S. Rostagno ◽  
Maurílio L. Xavier Junior ◽  
Bruna S. Kreuz ◽  
...  
Keyword(s):  
Total Nitrogen ◽  
Broiler Chickens ◽  
Crude Protein ◽  
Nitrogen Ratio ◽  
Protein Diets

Utilization of amino acids by preruminant lambs. II.* The effects of independent alterations in total nitrogen and total essential amino acid intake

1977 ◽  
Vol 28 (5) ◽  
pp. 933 ◽  
Author(s):  
H Dove ◽  
GR Pearce ◽  
DE Tribe
Keyword(s):  
Amino Acids ◽  
Energy Intake ◽  
Total Nitrogen ◽  
Nitrogen Balance ◽  
Crude Protein ◽  
Three Dimensional ◽  
Essential Amino Acids ◽  
Metabolizable Energy ◽  
Nitrogen Intake ◽  
Metabolizable Energy Intake

Male crossbred lambs weighing 12.5 kg were infusedper abomasum with milk-based diets containing 259, 209 or 175 g crude protein (CP)/kg dry matter. The proportion of crude protein supplied as essential amino acids (EAA) was also varied, to provide diets containing 414, 512 or 613 g EAA/kg CP. This allowed an estimation of the effects of independent alterations in total EAA intake and total nitrogen intake on rates of liveweight gain, and on daily nitrogen balance and metabolizable energy intake. At a given proportion of EAA in crude protein, reductions in the EAA intake reduced the rate of liveweight gain, especially when diets contained 414 or 613 g EAA/kg CP. At constant EAA intake, rates of liveweight gain were reduced when the nitrogen intake was such that the dietary proportion of EAA departed from 512 g/kg CP. Responses in nitrogen balance were similar to those in liveweight gain except that, at constant EAA intake, increases in nitrogen intake improved nitrogen balance. All nitrogen balance responses were less pronounced than liveweight gain responses. Lambs given diets containing 414 or 613 g EAA/kg CP had lower metabolizable energy intakes. This was not due to reduced metabolizability of apparently digested energy, but to differences in apparently digested energy intake. The relative effects of nitrogen intake and the proportion of crude protein supplied as EAA, on liveweight gain and nitrogen balance are assessed by using three-dimensional representations of the responses. ___________________ Part I,Aust. J. Agric. Res., 28: 917 (1977).

Beef production from silage 3. The effect of supplements of hay and dried grass on the performance of beef cattle

1983 ◽  
Vol 37 (2) ◽  
pp. 195-202 ◽  
Author(s):  
C. Thomas ◽  
R. M. Tetlow ◽  
B. G. Gibbs ◽  
Margaret Gill
Keyword(s):  
Weight Gain ◽  
High Temperature ◽  
Beef Cattle ◽  
Total Nitrogen ◽  
Crude Protein ◽  
Dry Matter ◽  
Live Weight ◽  
Dry Matter Intake ◽  
Live Weight Gain ◽  
Ad Libitum

ABSTRACT1. The primary growth of perennial ryegrass was cut between 7 and 9 June and ensiled with formic acid at 2·5 1/t. The regrowth was cut on 24 July; part was dried at high temperature (dried grass), the remainder was left to dry in the field (hay). The dried grass (DG) and part of the hay were ground and pelleted, the hay being pelleted alone (PH) or with the addition of formaldehyde at 20 g/kg crude protein (PHF). The remainder of the hay was offered in the chopped form (CH). The four supplements (CH, PH, PHF, DG) were offered at two levels, 6·5 (L) and 130 (H) g dry matter per kg live weight to 54 British Friesian steers (initial live weight, 110 kg) receiving the silage ad libitum.2. The silage had a high pH and a high proportion of the total nitrogen was in the form of ammonia, indicating poor fermentation. The solubility of nitrogen in the supplements was highest (262 g/kg total nitrogen) in CH, progressively less in PH and PHF and lowest (122 g/kg total nitrogen) in DG.3. Total dry-matter intake was highest with DG at the higher level of inclusion. Dry-matter intake was significantly higher for PH and PHF than for CH (P < 0·001). However, intake of digestible energy did not differ between hays. Live-weight gain was increased from a low level of 0·24 kg/day (silage alone) by all supplements, but this effect was greater with DG than with the hays (P < 0·001). Level of supplementation increased live-weight gain from 0·54 to 0·74 kg/day.4. Supplements of dried grass gave higher live-weight gains than did hay made from the same sward. However, the results indicate that supplementation of badly preserved silage with grass hay of good quality can produce acceptable levels of performance of up to 0·70 kg/day in 4-month-old steers. Processing of the hay had little effect on animal performance.

Revised Kjeldahl Total Nitrogen Method for Feeds and Premixes

1972 ◽  
Vol 55 (5) ◽  
pp. 984-985
Author(s):  
Robert Odland
Keyword(s):  
Boric Acid ◽  
Refractory Material ◽  
Total Nitrogen ◽  
Crude Protein ◽  
Analysis Time ◽  
Acid Method ◽  
Kjeldahl Method ◽  
Complete Digestion

Abstract A Kjeldahl method for equivalent crude protein in feeds was modified by using a smaller sample (0.25 g) and smaller amounts of reagents in order to reduce analysis time and cut costs. A 6% CuSO4 catalyst was used for the complete digestion of refractory material. Winkler’s boric acid method was modified by including a 90% pretitration to insure complete retention of ammonia so that only one standardized reagent is needed.

scholarly journals Researches Regarding the Influence of Organic and Mineral Fertilization on the Soil Parameters and Total Crude Protein Content of Forages from a Permanent Meadow by Cluster Analysis (Part 1)

1970 ◽  
Vol 66 (1) ◽  
Author(s):  
Monica HĂRMĂNESCU ◽  
Alexandru MOISUC
Keyword(s):  
Cluster Analysis ◽  
Nitrogen Content ◽  
Protein Content ◽  
Total Nitrogen ◽  
Crude Protein ◽  
Total Nitrogen Content ◽  
Mineral Fertilizers ◽  
Soil Parameters ◽  
Crude Protein Content ◽  
Total Crude Protein

This paper presents researches regarding the influence of organic (sheep manure) and NPK mineral fertilizers on the soil parameters and total crude protein content (%) of forages, harvested in the middle of May, 2008, from a permanent meadow situated near Grădinari, in Caraş-Severin district. The studied permanent meadow was organized in ten trials fertilized with different doses of NPK mineral fertilizers, organic (sheep manure) and organic-mineral fertilizers. For each trial was made five replications. The total nitrogen content (%) was determinated by Kjeldahl method, and total crude protein was calculated by multiplying total nitrogen content with 6.25. The soil pH was determinated in aqueous solution (ratio soil / water = 1/10) using potentiometric method. Mobile forms of potassium and phosphorus were determinated by Egner-Riehm-Domingo method, extracted from soil with an acetate-lactate solution buffered at pH= 4.6, at 1/5 soil-solution ratio. The statistical interpretation was performed with Multivariate Exploratory Techniques, Cluster Analysis, implemented in Statistica 6 software. Using Cluster Analysis is possible to show the influence of organic and mineral fertilizers on the soil parameters (pH, total nitrogen content, mobile form of P, and mobile form of K) and total crude protein content of forages from the permanent meadow from Gradinari (Caraş-Severin District) by grouping all ten experimental trials in three main groups.

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