Slow-release urea in supplement fed to beef steers

Gonçalves, Ana Paula; Nascimento, Carolina Fernanda Moysés do; Ferreira, Fernanda Altieri; Gomes, Rodrigo da Costa; Manella, Marcelo de Queiroz; Marino, Celso Luís; Demarchi, João José Assumpção de Abreu; Rodrigues, Paulo Henrique Mazza

doi:10.1590/s1516-8913201502162

Cited by 17 publications

(13 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Furthermore, data described by Oliveira Júnior, Pires, Susin, et al () and Carmo et al () obtained 13.4% of butyric acid value in extruded urea group. In accordance with our results (Table ), Gonçalves et al (), Oliveira Júnior, Pires, Susin, et al () and Carmo et al () demonstrated 93.5, 105.7 and 155.8 mMol of total VFA respectively.…”

Section: Discussionsupporting

confidence: 93%

“…This data had no differences from the urea‐containing treatment, which presented mean value of 59.8%, differing from soya bean meal with 60.5% of acetic acid concentration in ruminal fluid. Moreover, Gonçalves et al () evaluated slow release urea in beef steers supplementation by replacing the true protein with NPN (protected urea); thus, the results have not demonstrated differences on propionic acid concentration in all treated groups with an average of 17.1 mol/100 mol. In addition to found data by Carmo et al (), the group obtained an average result of 24.3% on propionic acid concentration for extruded urea treatment.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Extruded urea could reduce true protein source in beef cattle diets

Moraes

Ítavo

et al. 2019

Animal Physiology Nutrition

View full text Add to dashboard Cite

Rumen micro‐organisms are capable of producing microbial protein from ammonia and carbon skeleton, and non‐protein nitrogen (NPN) may be one of the sources of ammonia. Alternative source of NPN is the slow release of ammonia sources in which the product is the extrusion of starch with urea. This work aimed to determine the effects on nutrient intake, ingestive behaviour, digestibility, nitrogen balance, ruminal pH, rumen ammonia nitrogen, volatile fatty acids (VFA) and blood parameters with increased levels of extruded urea (50, 60, 70 and 80 g/100 kg of body weight [BW]) in beef cattle diet. Four rumen cannulated crossbred steers with initial mean weight of 336 ± 47 kg in a 4 × 4 Latin square design were distributed. Diets were formulated with 400:600 g/kg roughage:concentrate ratio on dry matter based and provided once per day, being used whole corn silage as roughage. There were no effects on nutrient intake (kg/day), ingestive behaviour, apparent digestibility, nitrogen balance, volatile fatty acid (VFA) and blood parameters in extruded urea treatment groups. Similar results were observed on time spent on feeding, rumination and idleness. There were positive linear effects (p = 0.022) on rumen pH in the time of 8 hr after feeding and also on plasma concentration of the extruded urea levels (p = 0.039); whereas a linear negative effect (p = 0.030) was observed on ammonia nitrogen for the collection time of 2 hr after feeding. Increased levels of extruded urea could maintain nutrient intake, digestibility, ingestive behaviour, rumen pH and blood parameters in normal conditions. In conclusion, we recommend the extruded urea use with values up to 80 g/100 kg BW in confined beef cattle that receive balanced diets with 140 g/kg of crude protein.

show abstract

Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 99%

Extruded urea could reduce true protein source in beef cattle diets

Moraes

Ítavo

et al. 2019

Animal Physiology Nutrition

View full text Add to dashboard Cite

show abstract

“…The molar proportions of acetate and propionate were 68.8% and 28.2%, respectively, which are within the normal ranges of 54 to 74% (acetate) and 16 to 27% (propionate) proposed by Silva and Leão (1979) and by Filho and Pina (2011). Although the present study was conducted in a closed and restricted system (in vitro) and despite the fact that the rumen is a dynamic environment, with passage of solids and liquids and entry of saliva and feed, our results corroborate in vivo studies (Heldt et al 1999;Laguna et al 2013;Gonçalves et al 2015).…”

Section: Discussionsupporting

confidence: 81%

Substitution of Non-Protein Nitrogen for True Protein Increases Microbial Growth and Degradation of Fibrous Carbohydrates from Buffel Grass

Neto¹

2021

IJAB

View full text Add to dashboard Cite

The aim of this study was to evaluate the effects of different sources of nitrogenous compounds on the in vitro utilisation of neutral detergent fibre from buffel grass in advanced phenological stage, the experiment consisted of testing five levels of substitution of urea for casein: 0, 25, 50, 75 and 100%. The effects of the substitution levels were evaluated by in vitro incubation at different times: 0, 3, 6, 9, 12, 24, 36, 48, 72 and 96 h. The degradation rate of potentially degradable NDF increased up to the replacement level of 50%, but declined by 6.53 and 13.57% in the treatments with 75 and 100% substitution of urea for casein, respectively, as compared with the treatment without substitution. Discrete lag time was reduced by 1.31 h in the treatment with 50% substitution and by 2.7 h at 100% substitution, as compared with 0% substitution. The substitution of up to 50% non-protein nitrogen for true protein increased microbial growth efficiency by 16.1% as compared with the treatment without substitution. Acetate and propionate concentrations were not affected by the substitution of urea for casein. The use of 50% non-protein nitrogen and 50% true protein as nitrogen sources for rumen microorganisms favour microbial growth and optimise the degradation of neutral detergent fibre from low-protein buffel grass. © 2021 Friends Science Publishers

show abstract

“…Penggunaan produk gelatinisasi sebanyak 30% (R 2 ) nyata lebih tinggi dibanding penggunaan sebesar 15% (R 1 ) maupun penggunaan urea dicampur empulur (R 0 ). Rendahnya kecernaan sapi yang mendapat perlakuan R 0 dibanding R 2 diduga karena tidak seimbangnya nitrogen dalam rumen dengan kandungan bahan organik tercerna, dimana NPN tidak komplet dimanfaatkan untuk pertumbuhan mikroba (Goncalves et al, 2015). Hal ini telah ditegaskan Seo et al (2010) dari hasil penelitiannya bahwa suplai ransum yang mengandung karbohidrat mudah terfermentasi dapat meningkatkan penangkapan amonia dalam rumen karenanya dapat meningkatkan sintesis protein mikroba.…”

Section: Kecernaan Bahan Kering Dan Nutrien Ransumunclassified

Efek penggunaan produk gelatinisasi empulur gewang (Corypha utan lamk) dengan urea terhadap pertumbuhan sapi bali yang mengkonsumsi rumput alam

Lazarus

Lawa

2020

JNP

View full text Add to dashboard Cite

Tujuan dari penelitian ini adalah menentukan efek penggunaan produk gelatinisasi empulur gewang dengan urea terhadap pertumbuhan sapi bali yang mendapat rumput alam sebagai ransum basal. Lima belas ekor sapi bali jantan dialokasikan untuk mendapat satu dari tiga perlakuan pemberian ransum yaitu, urea dicampur empulur gewang (R0), produk gelatinisasi empulur gewang dengan urea sebanyak 15% (R1) dan produk gelatinisasi empulur gewang dengan urea sebanyak 30% (R2). Rancangan acak lengkap digunakan sebagai rancangan percobaan dengan 3 perlakuan dan 5 ulangan. Data hasil penelitian dianalisis menggunakan analisis ragam dan uji lanjutan Duncan. Hasil penelitian menunjukkan penggunaan produk gelatinisasi empulur gewang dengan urea meningkatkan konsumsi, kecernaan, pertambahan bobot badan dan efisiensi penggunaan ransum sapi bali (P<0,01). Respon ternak sapi bali lebih tinggi pada penggunaan produk gelatinisasi empulur gewang dengan urea dalam ransum dibanding campuran empulur gewang dengan urea. Penggunaan produk gelatinisasi empulur gewang dengan urea sebanyak 30% dalam ransum nyata lebih tinggi dibanding penggunaan sebanyak 15%. Disimpulkan bahwa penggunaan produk gelatinisasi empulur gewang dengan urea sebagai suplemen dalam ransum meningkatkan konsumsi, kecernaan, pertambahan bobot badan dan efisiensi penggunaan ransum ternak sapi bali yang mengkonsumsi rumput alam dibanding penggunaan empulur gewang dicampur urea. Respon pertumbuhan tertinggi ditunjukkan ternak sapi bali yang mendapat produk gelatinisasi empulur gewang dengan urea 30% dalam ransum.

show abstract

Slow-release urea in supplement fed to beef steers

Abstract: Replacing regular urea (RU) by slow-release urea (SRU) at two levels of non-protein nitrogen (NPN)

Cited by 17 publications

References 23 publications

Extruded urea could reduce true protein source in beef cattle diets

Extruded urea could reduce true protein source in beef cattle diets

Substitution of Non-Protein Nitrogen for True Protein Increases Microbial Growth and Degradation of Fibrous Carbohydrates from Buffel Grass

Efek penggunaan produk gelatinisasi empulur gewang (Corypha utan lamk) dengan urea terhadap pertumbuhan sapi bali yang mengkonsumsi rumput alam

Contact Info

Product

Resources

About