Rye Grass
Lolium spp.
Also known as: Italian rye grass, ryegrass
About Rye Grass
Most common cultivated perennial high protein grass with high palatability.
Nutritional value and use in livestock rations
Rye Grass is a roughage (forage) and a protein source in the Pakistan Feed Library. On average rye grass contains crude protein 23.3% of dry matter, metabolisable energy 2.4 Mcal/kg, TDN 66.8% of dry matter, NDF 43.5% of dry matter.
Protein-rich forages help lift the crude-protein level of a ration while also supplying the fibre the rumen needs. They are usually combined with energy feeds and minerals, and the ration is balanced for the production stage of the animals.
Nutrient values vary with variety, growing conditions, processing and storage, so treat the averages as a guide. Send us your ration details if you would like advice on using it in a TMR.
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Nutritional analysis
| Nutrient | Unit | Average | SD | Min | Max |
|---|---|---|---|---|---|
| Dry matter | % | 13.5 | - | 11.4 | 14.9 |
| Crude protein | % DM | 23.3 | 3.4 | 19.0 | 27.0 |
| Ash | % DM | 13.3 | 1.0 | 12.5 | 15.0 |
| Fat (ether extract) | % DM | 3.5 | 1.6 | 1.7 | 4.8 |
| Neutral detergent fibre (NDF) | % DM | 43.5 | 5.3 | 38.0 | 49.7 |
| Acid detergent fibre (ADF) | % DM | 26.5 | 4.9 | 21.0 | 33.0 |
| Total digestible nutrients (TDN) | % DM | 66.8 | 2.8 | 63.1 | 70.0 |
| Metabolisable energy (ME) | Mcal/kg | 2.4 | 0.1 | 2.3 | 2.5 |
| Net energy – maintenance (NEm) | Mcal/kg | 1.5 | 0.1 | 1.4 | 1.6 |
| Net energy – gain (NEg) | Mcal/kg | 0.9 | 0.1 | 0.8 | 1.0 |
| Net energy – lactation (NEl) | Mcal/kg | 1.5 | 0.1 | 1.4 | 1.6 |
| Digestible energy (DE) | Mcal/kg | 2.9 | 0.1 | 2.8 | 3.1 |
- Literature values
- Laboratory analysis
- Calculated from lab data
SD = standard deviation DM = dry matter. Nutrients other than dry matter are expressed on a dry-matter basis. TDN = total digestible nutrients; ME, NEm, NEg, NEl and DE = metabolisable, net (maintenance / gain / lactation) and digestible energy.
