Methane emissions and growth performance of beef cattle grazing multi-species swards in different pesticide-free integrated crop-livestock systems in southern Brazil

被引：2

作者：

Portugal, Thales Baggio ^{[1
,2
]}

Carvalho, Paulo Cesar de Faccio

de Campos, Breno Menezes ^{[1
]}

Szymczak, Leonardo Silvestri ^{[1
,3
]}

Savian, Jean Victor ^{[4
,5
]}

Zubieta, Angel Sanchez

de Souza Filho, William ^{[3
]}

Rossetto, Jusiane ^{[3
]}

Bremm, Carolina ^{[3
]}

de Oliveira, Leandro Bittencourt ^{[1
]}

de Moraes, Anibal

Bayer, Cimelio ^{[6
]}

Monteiro, Alda Lucia Gomes ^{[7
]}

机构：

[1] Univ Fed Parana, Dept Crop Prod & Protect, BR-80035050 Curitiba, Brazil

[2] CONSIPA Consulting Integrated Crop Livestock Syst, BR-84015500 Ponta Grossa, Brazil

[3] Univ Fed Rio Grande do Sul, Grazing Ecol Res Grp, BR-91540000 Porto Alegre, Brazil

[4] Inst Nacl Invest Agr INIA, Ruta 8,Km 281, Treinta, Uruguay

[5] Inst Nacl Invest Agr INIA, Ruta 8,Km 281, Tres, Uruguay

[6] Fed Univ Rio Grande Do SulUFRGS, Fac Agron, Dept Soil Sci, Porto Alegre, Brazil

[7] Univ Fed Parana, Sheep & Goat Prod & Res Ctr, BR-80035050 Curitiba, Brazil

来源：

JOURNAL OF CLEANER PRODUCTION | 2023年 / 414卷

关键词：

Animal production; Eucalyptus; Enteric methane emissions; Mixed swards; Steers; GREENHOUSE-GAS EMISSIONS; FECAL CRUDE PROTEIN; INSTANTANEOUS INTAKE; SOIL CARBON; MANAGEMENT; RUMINANTS; DIGESTIBILITY; TEMPERATE; SAMPLES; SHADE;

D O I：

10.1016/j.jclepro.2023.137536

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The aim of this study was to assess the growth performance, forage intake and methane (CH4) emissions by beef cattle grazing under different spatiotemporal integrated crop-livestock systems (ICLSs). The experiment was conducted for two years (2017-2018 and 2018-2019) in warm season perennial pastures and cool season annual pastures grazed by beef steers. Three pesticide-free ICLS treatments - livestock-forestry (LF); crop-livestock (CL), and crop-livestock-forestry (CLF) - plus, a livestock control pesticide-free system (L) were conducted in randomized complete block design, with three replicates per treatment. Maize crop rotation was done with cool season cover crop under no-tillage. Eucalyptus trees (Eucalyptus benthamii) were planted in 2013 and intercropped with tree alleys. The animal performance, organic matter (OM) intake and enteric CH4 emission, yield, and intensity were assessed. We found no significant difference (P > 0.05) for average daily gain (ADG), stocking rate (SR), and daily live weight gain (LWG) per area for the different ICLS arrangements and seasons. The ICLS arrangements did not affect (P > 0.05) CH4 emission, yield, and intensity, with averages of 186 g steer � 1 day- 1, 26 g kg � 1 OM intake and 210 g kg � 1 of ADG, respectively. The average CH4 emissions per steer per day, per OM intake, per ADG and LWG per area were greater (P < 0.05) for steers when grazing warm season compared to cool season pastures. The integration or not of beef cattle with crops and/or forestry does not influence CH4 emissions, yield, and intensity by beef steers grazing pastures under moderate grazing intensity. Our results reinforce that well-managed integrated systems are a reliable climate-smart agriculture alternative for increasing production, e.g., grain, wood, meat, and mitigating or without increasing greenhouse gas emissions, such as CH4 from enteric fermentation in beef cattle.

引用

页数：9

共 77 条

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