Table 6 Cumulative NH3 emission and manure characteristics of Nellore cattle fed with sources of rumen undegradable protein during the finishing phase in feedlot.

From: Effects of rumen undegradable protein sources on nitrous oxide, methane and ammonia emission from the manure of feedlot-finished cattle

Variables1

Treatment2

SEM3

p value

SM

BSM

CGM

RDP vs. RUP

BSM vs. CGM

NH3, kg ha−1

800

707

882

112

0.687

0.259

DM, g kg−1 DM

913

800

827

59

0.231

0.312

OM, g kg−1 DM

565

618

579

24

0.475

0.197

N, g kg−1 DM

24.4

24.9

24.7

0.4

0.432

0.77

C, g kg−1 DM

271

309

287

14

0.185

0.163

C/N

11.1

11.3

10.7

0.1

0.487

 < 0.001

NH4+, mg kg−1 DM

276

188

180

13

 < 0.001

0.697

  1. 1NH3 = accumulated values during 77 days of evaluation. DM = dry matter, OM = organic matter; 2SM = manure of animals fed soybean meal as a source of rumen degradable protein (RDP), BSM = manure of animals fed by-pass soybean meal as a source of rumen undegradable protein (RUP), CGM = manure of animals fed corn gluten meal as a source of RUP. 3SEM = standard error of the mean. Chamber considered as an experimental unit (n = 9).
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