Aber High Sugar Grasses - What are the Benefits?
Farmers using Aber High Sugar Grasses (HSG) can benefit from increased production while simultaneously helping the environment. These award-winning perennial ryegrass varieties are bred to contain higher water-soluble carbohydrates than standard grasses. This enhances protein use efficiency in livestock, ensuring less is wasted as harmful ammonia and nitrous oxide emissions.
What are the benefits?
Dairy
- Up to 6% average higher milk yield per cow (Miller et al, 2001):
- 2.7kg per day increase in milk yield in late lactation cows (Miller et al, 2001).
- Dry matter intake increase: 2kg per head per day (Miller et al, 2001).
- Diet digestibility: 3% improvement with Aber HSG vs standard grasses (Miller et al, 2001).
Beef
- Up to 25% dry matter intake increase (IBERS).
- Up to 20% higher daily liveweight gain (IBERS).
Sheep
- Up to 20% higher daily liveweight gain (IBERS).
- Up to 20% higher sward carrying capacity (IBERS).
Increase in liveweight gain (LWG) in lambs grazing Aber HSG
| Timeframe | Liveweight gain change |
| 6 May-27 May | 15% increase |
| 27 May-17 June | 26% increase |
| 17 June-8 July | 6% increase |
Source: Lee et al, 2001
Environmental
- 24% reduction in urinary N excretion (IBERS).
- 4-6% reduction in nitrate leaching (Soteriades et al, 2018).
- 7-11% decrease in ammonia losses to the atmosphere (Soteriades et al, 2018).
- 40% lower carbon footprint per litre of milk when combined with improved manure management (Soteriades et al, 2018).
Reduced emissions from dairy cows grazing Aber HSG
| Measure | Early lactation dairy cows | Late lactation dairy cows |
| N in urine per kg milk | 26% decrease | 41% decrease |
| N in faeces per kg milk | 5% decrease | 25% decrease |
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