FEED PROCESSING TO MAXIMIZE PERFORMANCE IN PIGS

 Joe D. Hancock, Ph.D. Kansas State University

Why Grind?

• Enhanced mixing
• Decreased segregation

• Increased nutrient digestibility

Particle Size & DM Digestibility in Primiparous Sows

Particle Size & Litter Wt Gain in Primiparous Sows

Particle Size & DM Excretion in Primiparous Sows

Particle Size and Milling of Corn

Mixing

• What do I use as a marker?
• How much uniformity do I really need?

Mix Time and Markers

Mix Uniformity and CV for Salt in Finishing Diets

Mix Uniformity and ADG in Finishing Pigs

Mix Uniformity

• Broilers and nursery pigs:

CV for salt, Cr or Microtracer < 20%

Finishing pigs:

CV for salt < 30%

Thermal Processing

Roasting & micronizing

Steam flaking

Pelleting

Extrusion

Pelleting

• ADG increased by 6%
• Gain/feed increased by 6 to 7%
• Independent of particle size
• Pellets of 4 to 6 mm diameter adequate for weaning to market

Pellet Quality

Pellet Quality & ADG in Finishing Pigs

What to do?

• Monitor mean particle size closely
• Uniformity of particle size is of much less consequence
• Don’t kill yourself trying to get a mix CV of less than 10%
• Pellet quality is VERY important!!

 Regresar