Forage Types and Benefits - University of Tennessee Documents/Small Ruminant Conference...20 80 —...
Transcript of Forage Types and Benefits - University of Tennessee Documents/Small Ruminant Conference...20 80 —...
Forage Types and Benefits
Forage Species and Management
• Attempt to manage existing vegetation, Small ruminants eat more browse and forbs than cattle
• Tromp undesirable vegetation: perilla mint, cocklebur, nimblewill, spiny amaranth
• Inventory forage needs weekly, decision to plant prior to end of recommended planting date April 1, July 1, Oct 1.
• Species planted: Low endophyte Tall fescue (Select), Prairie bromegrass(Persister), Red Clover (cinnamon), White Clover (Will), Crabgrass (Red River), Rye, Ryegrass, Millet and BMR sudangrass.
• High Tannin species
Evaluation of Stand
• Replant < 50% cover 4 to 9 plants per square foot
• Renovate with legumes 50 to 70% cover 6 to 11 plants per square foot
• Manage current stand >70% cover 12 or more plants per square foot.
Grass 6” or less apart with 3 tillers can be managed back to a full stand
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec
Winter annuals
(small grain/
annual ryegrass
15%
Cool season
perennial grasses
55%
Warm season
perennial grasses
20%Warm season
annual grasses
5%Spring
oats and
brassicas
5%
Approximate Percentages of Various Forages for Year Around Forage
Percentage of each species will vary relative to yield
NRCS
No need in planting a species that can’t
tolerate your managementForage
Species
Height to
begin grazing
Height to
terminate
graz.
Tall fescue
orchardgrass
an. Ryegrass
sericea lesp.
5-8” 3”
Bermudagrass 5-8” 2”
Native warm
season, sudan
18” 8-10”
8” 4”
Safe Pasture
• Hayed• Silage• Grazed with other stock for
one season• Grazed above 5”• Tilled and planted
5 days to months before larvae become infective dependent on moisture and warmth
14 days from ingestion before Haemonchus contortus sheds infected eggs.. For Ostertagia and Trichostrongylus it’s 21 days.
Most infective larvae in the bottom 5” of grass
Confine stock to one paddock. Plant the Sacrifice area in Bermudagrass or Ky 31 tall Fescue
• Continue to rotate cattle till paddocks are at minimum recommended grazing ht in the growing season or 2” in the non growing season
• Sacrifice paddock(s) • 10% of total pasture acreage is ideal but no more than 20%.
• Shade 50 to 63 sq ft/AU
• No water areas, drainageways, slope over 4% or karst features
• Bermudagrass base with tall fescue or annual ryegrass
Quality of Grass
Dairy quality
Don’t Graze
Dry ewe or cow quality
RELATIVE FEED COSTS$ per lb of TDN
• PASTURES• Permanent…………….. .01-.02
• Annual……………………. .03-.04
• STORED FORAGES• Hay………………………... .04-.05
• Silage…………………….. .04-.05
• CONCENTRATES and/or BYPRODUCTS………….05-.15+
NCSU BUDGETS
3 tons of hay removes ($184/ac fertilizer):- 150 lb. nitrogen- 40 lb. P2O5
- 145 lb. K2O
Each ton of hay removes ($61 fertilizer):- 40-60 lb. nitrogen- 13 lb. P2O5
- 48 lb. K2O
Forage Species to Plant
• Warm Season• Eastern gamagrass
• Big bluestem
• Indiangrass
• Improved Bermudagrass
• Crabgrass
• Pearl millet
• Sudangrass
• Sorghum x
• Sericea lespedeza
• Cool Season– Orchardgrass
– Rescuegrass bromegrass
– Tall Fescue (Novel or Select)
– Winter Annuals
– Alfalfa
– Brassicas
– Chicory
Plants with Condensed Tannins (potent antioxidants)“Medicinal Pasture”
• anti-cancer properties, as well as a positive impact on heart disease, immune systems and urinary tract infections.
• Sericea Lespedeza
• Annual lespedeza
• Birdsfoot trefoil
• Arrowleaf clover
• Berseem clover
• Crown vetch
• Multiflora-rose
• Autumn olive
• Chicory (volital oils)
• Mulberry
• Mimosa
Managing Existing VegetationWeeds/Forbs
Chemical composition of various plants browsed by goats (%)
Browse type
Crude
protein
Neutral
detergent
fiber
Calcium Phosphorous
Multiflora
rose18.2 34.5 0.99 0.32
Black locust 23.0 44.0 1.26 0.21
Honeysuckle 16.0 34.5 1.21 0.30
Brambles 17.1 24.5 0.23 0.84
Privet 20.0 26.8 0.89 0.34
Green briar 16.1 39.5 0.60 0.18
Trumpet
creeper16.7 43.1 0.42 0.22
http://pubs.ext.vt.edu/418/418-150/418-150.html
Table 2. Quality of alfalfa occurring in a newly established stand compared to seven annual weeds occurring in a weed nursery on July 16, 1971a
SpeciesInvitro digestible dry
matter (IVDDM)Acid detergent fiber
(ADF) Crude protein (CP)————————— % —————————
Alfalfab 72 24 27Redroot pigweedc 73 21 25Common lambsquarters
68 22 25
Common ragweed 73 25 25Pennsylvania smartweed
51 22 24
Yellow foxtail 69 30 20Giant foxtail 62 33 18Barnyardgrass 70 33 18aAdapted from Marten, G. C., and R. N. Andersen. 1975. Forage nutritive value and palatability of 12 common annual weeds. Crop Science 15:821-827.bAlfalfa was seeded on May 14, 1971.cWeed nursery was seeded naturally in late summer and autumn of 1970.
Table 3. Crude protein (CP) and invitro dry matter digestibility (IVDMD) of common weeds and forages at three stages of maturity
Weeds
Vegetative Flower/boot Fruit/headCP IVDMD CP IVDMD CP IVDMD
--------------------------------------- % --------------------------------------Herbaceous weedsCarolina geranium
19 78 19 70 11 68
Curly dock 30 73 19 54 16 51Cutleaf evening primrose
20 72 14 69 11 52
Henbit — — 20 78 16 75Virginia pepperweed
32 86 26 72 17 63
GrassesCheat 23 81 18 69 14 61Little barley 24 82 18 78 14 62Virginia wildrye
23 80 19 74 7 60
Wild oats 23 75 — — — —ForagesHairy vetch 30 80 29 77 26 77aAdapted from Bosworth, S. C., C. S. Hoveland, and G. A. Buchanan. 1985. Forage quality of selected cool-season weed species. Weed Science 34:150-154.
Table 4. Crude protein (CP) and invitro dry matter digestibility (IVDMD) of weeds and forages at three stages of maturitya
Weeds
Vegetative Flower/boot Fruit/headCP IVDMD CP IVDMD CP IVDMD
------------------------------------------% --------------------------------------Herbaceous weedsBur gherkin — — 17 75 14 79Coffee senna 17 81 22 75 15 67
Common purslane — — 19 80 — —
Cypressvine morningglory
20 80 — — 13 77
Florida beggarweed 22 74 17 65 13 55
Hemp sesbania 31 70 14 66 11 52
Ivyleaf morningglory 20 80 — — 11 78
Jimsonweed 25 72 21 66 17 59Prickly sida 17 80 18 70 12 56Redroot pigweed 24 73 17 71 11 64
Sicklepod 22 84 14 76 17 71Tall morningglory 20 82 — — 14 76
GrassesCrabgrass 14 79 8 72 6 63Crowfootgrass 16 67 8 54 9 43
Fall panicum 19 72 9 63 7 54Texas panicum 16 74 11 62 8 52
Yellow foxtail 18 73 12 66 14 57
ForagesBermudagrass 16 58 7 51 8 43
Pearl millet 17 59 6 60 8 60aAdapted from Bosworth, S. C., C. S. Hoveland, G. A. Buchanan, and W. B. Anthony. 1980. Forage quality of selected warm-season weed species. Agronomy Journal 72:1050-1054;
Before grazing by Goats, 600 lbs/ac
After Grazing 30 days by Goats
Note fence for goats is offset electric old barb behind electric
Blackberry briars
and Tall fescue
before grazing
Blackberry briars
and Tall fescue
after grazing
1700 lb/ac of
goats for 1 wk
Common ragweed
Marestail (horseweed)
Weeds are palatable at certain stages.A fast rotation of 3 days or less on a paddock and returning in ~45 days works well
Mow or trample prior in early bloom stage
Smooth Amaranths, not so bad
BAD WEEDS
Amaranths consumed best by sheepForb or Weed?
Ironweed eaten well by goats and sheep
Perilla mint very little eaten
Managing for More Diversity
Ryegrass “mulch” (on left) kept down pigweed
These plants can help control weeds: Allelopathic:
Winter RyeAnnual Ryegrass
Black OatsBrassicas
Sorghums
Photo by Kathy Voth
Smother PlantsHairy VetchAustrian Winter Pea
Managing for Continuous Cover
May be a little too lush, fiber is lacking. Let it get more mature before grazingOver mature not
high quality, may tromp a lot on the ground but will build soil health
Sweet vernal grass
Nimblewill
Nimblewill
AnnualsFast forage ASAP options
• Feb 15 to April1• Spring oats, forage turnips seeded
• April 15• Seed sudangrass
• May – July 1• Seed crabgrass, pearl millet
• August 15- Oct 1• Seed spring oats and forage turnips
• Cereal rye and annual ryegrass mix
10 calves(500wts) /Ac x 13 days x 2.0 adg = 260 lb/Ac x $1.50/lb of beef = $390/ac assumption is 50% of
forage is consumed
Warm Season Grass Full Seeding Rate
Species Drilled Broadcast• Sorghum sudangrass 30 45• Pearl Millet 10 20• Brown top millet 25 40• German foxtail millet 20 25• Teff 6 8• Crabgrass 3 5• Cowpeas 50 100• Soybeans 75 150• Corn 28 50
To get the benefit of a mix like this you have to delay grazing till the legumes have fully developed and produced flowers
Stockpile forage (double rest)
• Reserve pasture its sometimes called
• If you have a pasture that isn’t performing well skipping it in the rotation can improve production
• Plan for 60 to 90 days of grazing at all times of the year.
Quality of Stockpiled Tall Fescue vs. Hay
John Jennings and Mark Kennedy
Frost Seeding in fields with 50% or better stand of grass (additional options)
• February• 2 lb White clover• 4 lb Red clover• 8 lb Annual lespedeza (less productive soil)
• Optional Soil Health additions:• 4 lb Hairy vetch (less productive soil and wet soil)• 1 lb Arrowleaf clover• 1 lb Brassicas (turnips, canola or radish)• 2 lb Annual ryegrass• 3 lb Prairie bromegrass• 5 lb Tall Fescue
Come March legumes need to be drilled
Timing
• Evaluate forage supply prior to the end of seeding dates:• April 1
• July 1
• Oct 1
• Decide whether to fertilize, stockpile forage, supplement, seed, early wean, or de-stock
Annual Cover Crops
• Purpose
• Fill voids in perennial growth
• High Nutritional demand
• Increase residue
Grazing CornAre we suppose to be in here?What is this stuff?
Cost of corn $7/ac, 150,000 ppa, drilled
Later Day 1, 8/10/2012
Path for fence knocked down with truck, 3 wire poly fence
6 days grazing, Note: Goat heads high, Sheep heads low, Cattle in tall corn
Goats
Sheep
Note: All species will do some browsing and grazing
August 18, Day 8, of strip grazingToo much can be eaten, big screw up!
Not good residue (litter) management should have back fenced, results in reduced fertility, moisture conservation and lower biological activity
Prairie Bromegrass adapted to shade and heavy manure areas
Same site as previous slide in AugustPigs with Cattle, Goats, Dogs and Sheep