Can low input dairy systems be economically and environmentally sustainable? Results from a farmlet study.
نویسندگان
چکیده
A two-year dairy study was conducted under irrigation at Lincoln, Canterbury, comparing 1. Moderate stocking rate (MSR, 3.9 cows/ha; comparative (CSR) of 89 kg live weight (LWT)/t DM (dry matter) offered; 150 nitrogen (N) fertiliser/ha/year; grain supplementation 0.55 t DM/cow/year; wintering cows off- farm); or 2. Low (LSR, 2.9 CSR 91 LWT/t grazing diverse pasture (Italian ryegrass, plantain, red- and white clover); 103 N on-farm). The Lincoln University Dairy Farm (LUDF; 3.4 76 169 fertiliser/ha/year) the benchmark. Milk yield, production quality data were modelled in FARMAX OverseerFM to estimate financial environmental performance each farm. Performance similar for MSR LUDF. LSR gave best outcome across 2018/19 2019/20, leaching approximately 31% less compared with However, annual milk solids per ha 28% relative Correspondingly, operating profit 35% These losses can be mitigated an system if farmer adopts more complex management.
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ژورنال
عنوان ژورنال: Journal of New Zealand grasslands
سال: 2023
ISSN: ['2463-2872', '2463-2880']
DOI: https://doi.org/10.33584/jnzg.2022.84.3567