Meeting the Nutritional Needs of Livestock on Pasture Donna M. Amaral-Phillips University of...
-
Upload
constance-boyd -
Category
Documents
-
view
214 -
download
0
description
Transcript of Meeting the Nutritional Needs of Livestock on Pasture Donna M. Amaral-Phillips University of...
Meeting the Nutritional Needs of Livestock on
Pasture
Donna M. Amaral-PhillipsUniversity of Kentucky
Excellent Pasture Managers
Integrate Forage Management and Sound Animal
Management Practices
For Efficient and Profitable Animal Performance
Concept #1:Nutrient Needs of Grazing Ruminants Change With ...
• Milk Production --Cow & Calf – Higher production greater
nutrient needs– First 3 months after calving
greater than next 3 months
Master Grazer Educational Program
Concept #1:Nutrient Needs of Cattle
Change With ...• Stage of pregnancy
– Last 3 months of pregnancy greater than middle trimester
Master Grazer Educational Program
Concept #1:Nutrient Needs of Cattle
Change With ...• Stockers- Rate of gain
–Stockers gaining 2.5 lbs greater than 1.5 lbs per day
Master Grazer Educational Program
Concept #2: Forage Factors Regulate Intake
“Q- squared” Forage Concept
Quality
and
Quantity
Master Grazer Educational Program
Forage Quantity Determines
Feed Intake andPerformance
Concept #3: Cattle Selectively Graze
• Forage grazed higher quality than forage collected through pasture clippings
Master Grazer Educational Program
Nutrient Content of Pasture and Hay
(Dry matter basis) Crude Protein ADF TDN (%) (%) (%) Alfalfa Grazed 33 20 80 Clipped 20 30 60 Fescue/Clover Grazed 25 29 66 Clipped 16 35 58
Master Grazer Educational Program
Selective Grazing
• Forage grazed higher quality than forage collected through pasture clippings
• Cattle eat the top of the plant first–Especially important for alfalfa and
red clover plant
Master Grazer Educational Program
Concept # 4:
Forage Species determines intake and performance
Master Grazer Educational Program
Cool Season Grasses
Grasses and Legumes
Legumes
Forage Intake
and Digestibility
Forage Species
Master Grazer Educational Program
Concept # 5: Time Spent Grazing Does Not IncreaseOn Poor-Quality Pastures
• Cattle spend approximately 8-9 hrs per day grazing in 3 different grazing periods
• Cattle spend the same amount of time grazing regardless of pasture quality or yield
Master Grazer Educational Program
Concept #6: Performance Versus Pasture Utilization
Nose of the Steer/Cow/Calf or
Sheep/goat
In Contact With Green, Leafy Forage At All Times