Harvest Management for Baled Silage
Proper harvest management is essential for producing high-quality baled silage and maintaining forage value.

 
Priority Crops for Silage
  • First Cut Hay:
    • Ideal for baled silage as it avoids delays waiting for dry-down.
    • Ensures timely subsequent harvests and improved forage quality.
  • Other Suitable Crops:
    • Green feed or high-moisture crops difficult to dry.
    • Surplus forage not needed for grazing.
    • Late-fall/third cuts harvested under cool conditions—high sugar content improves fermentation.

 
Cutting and Swathing Guidelines
  • Leave high stubble to prevent soil contamination and maintain feed quality.
  • Swath width should match baler width for uniform bales and proper wrapping.
  • If swath width is narrow, use a weaving pattern when baling to avoid barrel-shaped bales.
  • Wide swaths and good crimping promote rapid dry-down.

 
Twine Selection
  • Use plastic twine instead of sisal.
    • Oil-based preservatives in sisal can degrade plastic wrap.

 
Baling Options
Round Balers
  • Most common for baled silage.
  • Hard-core or variable-chamber balers preferred for firm, dense bales.
  • Check compatibility with high-moisture forage.
  • Features for silage baling:
    • Roller scrapers for wet forage.
    • Cutting attachments for slicing forage (recommended cut: 8 inches / 20 cm).
    • Slicing improves fermentation and ration mixing.
Square Balers
  • Medium and large square balers gaining popularity:
    • Easier transport and marketing.
    • High capacity; some models include forage knives.
  • Small-square balers are impractical for silage due to wrapping challenges.

 
Key Recommendations
  • Prioritize first cut and high-moisture crops for silage.
  • Maintain proper swath width and stubble height.
  • Use plastic twine and ensure baler compatibility with silage.
  • Consider balers with slicing features for improved fermentation.
 
Storage Systems for Baled Silage
Proper storage is essential to maintain forage quality and prevent spoilage. Two common systems for baled silage storage are tube systems and individual bale wrapping.

 
Tube Systems
  • Design: Bales are pushed through a hoop into a pre-fashioned plastic tube.
  • Plastic Specifications:
    • Minimum thickness: 4 mils
    • UV-resistant; typically white with a black liner for added strength.
  • Home-Made Tube System:
    • Manual operation; time-consuming.
    • Requires securing loose plastic to prevent air entry.
  • Tube-o-Later System:
    • Automated; uses guides and adjustable rings for tight plastic fit.
    • High efficiency: up to 200 bales/hour.
  • Hydraulic Tube Systems:
    • Use hydraulic power and fingers to push bales and stretch plastic for a secure seal.

 
Round-Bale Individual Wrap
  • Method: Each bale is stretch-wrapped with controlled tension using four layers of plastic.
  • Plastic Requirements:
    • 50% stretch factor
    • UV resistance
    • High tear strength and adhesion
    • Color: White for high sunlight areas; black for low sunlight.
  • Advantages:
    • Minimal spoilage due to tight wrap.
    • Bales can be moved and stacked in small storage areas.
    • Popular in Europe for flexibility and quality preservation.
Square-Bale Individual Wrap
  • Method: Similar to round bale wrapping, using stretch film with the same specifications.
  • Bale Size: Adjusted to 4–5 ft (1.2–1.5 m) for easier handling and wrapping (instead of standard 8 ft).
  • Advantages:
    • Practical for transport and marketing.
    • Suitable for operations preferring square bales.
Tube-Wrapped System
  • Design: Bales placed on a platform and hydraulically moved through a revolving ring that stretch-wraps four layers of plastic.
  • Features:
    • Creates long tubes of tightly wrapped bales.
    • Processes 70+ bales/hour.
    • Uses half the plastic compared to individual wrapping.
  • Plastic Specifications: Same as individual wrap systems.
 

 
Key Recommendations
  • Use UV-resistant plastic of proper thickness.
  • Ensure airtight seals to prevent spoilage.
  • Choose storage system based on operation size, labor availability, and equipment capacity.

 

Storage Site Recommendations for Baled Silage
Proper site selection and maintenance are essential to protect silage quality and minimize spoilage risks.

 
Key Guidelines
  • Well-Drained Location: Prevent water accumulation around bales.
  • Vegetation Control: Keep the site free of long grass to reduce rodent and wildlife activity.
  • Debris-Free Area: Remove sharp objects or debris that could puncture plastic wrap.
  • Wind Protection: Choose a wind-sheltered area to reduce plastic damage and air infiltration.
  • Row Orientation:
    • Prefer north-south alignment to minimize sun exposure issues.
    • East-west rows can cause moisture migration and attract rodents due to warm southern exposure.
  • Regular Inspection: Check wrapping frequently for punctures or tears; repair immediately using red construction tape.
  • Wildlife Protection: Consider covering bales with protective fabric to reduce damage from animals.

 
Key Takeaways
  • Site preparation and regular monitoring are critical for maintaining airtight seals.
  • Proper orientation and protection reduce spoilage and extend storage life.

 

Feeding Benefits of Baled Silage
Baled silage (baleage) offers significant advantages as a forage option, particularly for backgrounding calves and improving feed efficiency.

 
Key Benefits
  • Improved Palatability:
    • Soft texture enhances intake and reduces feed waste compared to dry hay.
  • Reduced Feed Loss:
    • Manitoba Agriculture trials showed 25% feed savings over hay when fed in round-bale feeders.
  • Lower Digestive Risks:
    • Reduced incidence of bloat and other issues common with fresh alfalfa or alfalfa hay.
  • Versatile Feeding Options:
    • Compatible with dry hay systems (round-bale feeders, field unrolling).
    • Can be chopped and fed alone or incorporated into mixed rations.
  • Less Leaf Loss:
    • Unrolling in the field results in less leaf shatter than dry hay.

 
Impact of Forage Quality on Animal Performance
(University of Manitoba trial – 49 days, chopped baled silage, no grain supplement)
Forage Quality (RFV)
Initial Weight (lb)
Final Weight (lb)
Gain/Day (lb)
Feed/lb Gain (lb)
Low (RFV 78)
729
828
1.96
8.53
Medium (RFV 112)
727
864
2.81
6.80
High (RFV 155)
727
898
3.63
5.39
Key Insight: Higher-quality baled silage significantly improves daily gain and feed efficiency, reducing feed cost per pound of gain.

 
Summary
  • Baled silage improves palatability, reduces waste, and lowers digestive risks.
  • Performance varies with forage quality—higher RFV yields better gains and efficiency.
  • Ideal for flexible feeding systems and cost-effective livestock production.
Baled Silage Versus Chopped Silage
Research shows that baled silage ferments more slowly than chopped silage. This difference is primarily due to:
  • Surface Area: Chopped silage exposes more surface area for bacterial activity.
  • Plant Juices: Chopping releases plant juices quickly, accelerating fermentation, while whole-fiber bales release juices more slowly.

 
Fermentation Rate Comparison
(pH Levels Over Time)
Days Fermenting
pH – Baled Silage
pH – Chopped Silage
0
5.7
5.7
1
5.8
5.1
3
5.7
4.9
9
5.5
4.6
60
5.1
4.4
Key Insight:
  • Chopped silage reaches a stable pH (~4.4) within 1 day, while baled silage may take up to 60 days to achieve similar acidity.

 
How to Improve Baled Silage Fermentation
  • Use baling equipment with integrated knives to slice forage during baling.
  • Increase bale density to reduce air pockets and speed fermentation.
  • Consider inoculants for crops with lower carbohydrate content (e.g., alfalfa).

 
Summary
  • Baled silage offers flexibility but requires careful management to ensure proper fermentation.
  • Equipment upgrades and best practices can minimize the slower fermentation drawback.