Unit 9: Dairy Cattle Feeding - Unit 9 Objectives:
- Discuss life-cycle feeding programs for dairy
- Identify nutrient needs and additives used
- Understand nutrition related diseases/disorders
Unit 9: Dairy Cattle Feeding - Feeding for Milk Production
- General
- What types of systems are in use for milk production in today’s industry?
- What influences which system is utilized?
- Feeding is often the determining factor in productivity of lactating dairy cows
- Represents 50% of the total cost of production
- Nutrient requirements for lactation are several times that of maintenance requirement
Unit 9: Dairy Cattle Feeding - Things to remember:
- There is more variation in protein content and quality and energy in forages & concentrates
- Primarily concerned with NEl, CP, DP, RUP, & AA contents of the ration
- Mineral content and interactions are becoming much more important and manipulated
- Forage Consumption
- Estimated daily intake of forages is based on body weight and forage quality
- What does forage quality have to do with it?
Unit 9: Dairy Cattle Feeding - Forage intake must be restricted somewhat to allow for sufficient grain supplementation to support milk production
- Silage can replace hay at a ratio of 3:1
- Pasture intake will usually exceed silage intake
- Some evidence that increased feeding times can increase total forage consumption
Unit 9: Dairy Cattle Feeding - Concentrates for Dairy Cattle
- Concentrate mixture
- Grains, milled feeds, protein supplements, min/vit
- Level of concentrate fed depends:
- Amount of forage consumed
- Milk production
- Milk fat composition
- NEVER feed over 60% concentrate in the diet – drastically changes VFA composition in the rumen – what health problems does it cause?
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