Corn Silage

Corn Silage from Pakistan

Corn silage is made by harvesting the entire maize plant at the late dough to early dent stage (30-35% dry matter), when the grain has developed but the stalk and leaves still contain significant moisture and digestible fibre. The harvested plant is chopped into 10-20 mm pieces by a forage harvester, then immediately compacted and sealed under anaerobic conditions. Natural lactic acid bacteria ferment the plant sugars into lactic acid over 3-4 weeks, dropping the pH to 3.8-4.2 and preserving the forage for 12+ months. The result is a sweet-smelling, highly palatable, energy-dense feed that dairy and beef operations rely on as a primary forage source.

Specifications

• Material: Whole-plant maize silage (fermented)

• Dry Matter: 30-38%

• Crude Protein: 7-9% (DM basis)

• Starch: 25-35% (DM basis)

• NDF (Neutral Detergent Fibre): 38-48% (DM basis)

• ADF (Acid Detergent Fibre): 22-30% (DM basis)

• ME (Metabolizable Energy): 10-11 MJ/kg DM

• TDN (Total Digestible Nutrients): 65-72%

• pH: 3.8-4.2 (properly fermented)

• Lactic Acid: 4-7% (DM basis)

• Butyric Acid: < 0.1% (quality indicator)

• Chop Length: 10-20 mm

• Colour: Olive-green to yellow-green

• Odour: Sweet, slightly acidic, fermented

Two Forms Available

Bale Silage

• Round bales, 400-600 kg each

• Chopped maize wrapped in 4-6 layers of UV-resistant stretch film immediately after baling

• Each bale is a self-contained, sealed fermentation unit

• Ideal for export: individual units are easy to handle, transport, and stack in containers

• Shelf life: 12-18 months if film remains intact

• Typical container load: 38-44 bales per 40ft container (18-22 MT)

Bulk Silage

• Loose chopped maize compacted in pit silos, bunker silos, or silage bags at the farm

• Covered with plastic sheeting and weighted to maintain anaerobic conditions

• Most common form for domestic dairy farm supply

• Available for export in bulk containers with silage bags or lined containers

• Most cost-effective per tonne, but requires more specialized loading and handling

Industrial Uses

• Dairy cattle feeding: Corn silage is the primary forage in modern dairy rations, typically comprising 40-60% of the total mixed ration (TMR) on a dry matter basis. Its high energy (starch from grain) and digestible fibre (from stalk and leaves) support high milk production, body condition, and rumen health

• Beef cattle feeding: Corn silage is used as the main forage in beef feedlot rations, backgrounding programs, and cow-calf operations. Its high energy density supports efficient weight gain and finishing

• Buffalo feeding: In Pakistan and South Asia, corn silage is increasingly adopted by commercial buffalo dairy farms as a replacement for traditional green fodder and wheat straw, improving milk yield and fat content

• Sheep and goat feeding: Corn silage is used as a supplementary forage for sheep and goat operations, particularly during dry seasons when fresh forage is scarce

• Biogas production: Corn silage is one of the most efficient feedstocks for anaerobic digestion in biogas plants, producing methane for electricity generation and heating

Quality Assurance

Each lot is tested for dry matter, crude protein, starch, NDF, ADF, pH, lactic acid, butyric acid, and mycotoxin levels. Properly fermented silage should have a pH of 3.8-4.2, sweet acidic smell, and no visible mould. Pre-shipment samples are provided for buyer evaluation. Bale integrity (film condition, absence of punctures) is inspected before loading.