IMGP Annual Meeting January 16, 2010

Terry K. HutchensExtension Specialist

Goat ProductionUniversity of Kentucky

859-257-2465

thutchen@uky.eduhttp://www.uky.edu/Ag/AnimalSciences/goats/goat.html

Source of Goat Producer’s Newsletter and other educational materials

2005-2006 Kid on Pasture Only 2007 Supplemented on Pasture Study

SIPAC, Jasper IN • Gestational period divided in to (3) 50-day

periods or trimesters• Supplementation of grazing began on day 50 (2nd

trimester)• Supplement rate 2nd trimester at 1% of BW, • 3rd trimester supplemented at 1.5% BW, • Lactation period (90-days to weaning)

supplement at 1% BW • Does averaged 94.6 lbs LBW, • Supplement rates 1.04 lbs and 1.54 lbs (AF basis)

Feeding Design for Se Study

• Handfed 1 time daily 14% Concentrate

Feeding Bunk at SIPAC

AS Fed % Commodity

10 DDGS

16 Cracked Corn

65 SBH

4 Liq. Molasses

5 Mineral

.05 Ammonium Chloride

Observational Results of Doe Supplementation in 2007

Effect on Ave Weaning Wt.Year Trt LS M

30-Day Wt.Lbs

LS M60-Day Wt.

Lbs

LS M90-Day Wt.

lbs05, 06 - Sup 15.17 21.84 26.7607 +Sup 15.61 23.93a 34.11a

P Value=N=161

0.0298 <.0001

Joint project Perdue, UK & KSU (SIPAC)Analysis K. Andries KSU

Observational Results of Doe Supplementation in 2007

Doe Efficiency

Year # Does Exposed

# Open Does

# Does Kidded

# Kids Lost/Doe Kidded

Total Kid Weaning Wt/Total Doe-BW

2005 30 8 22 0.77 0.34

2006 28 0 28 0.5 0.43

2007 39 4 35 0.23 0.50

Joint project Perdue, UK & KSU (SIPAC)

Observational Results of Doe Supplementation in 2007

Herd Efficiency Includes does with kids lost and open does.

Year # Does Exposed

Ratio of Kids Born/Doe Exposed

Ratio of Kids Weaned/Doe Exposed

Portion of Kids Weaned/Doe Exposed

A B 1-(A-B)2005 30 1.07 0.57 0.502006 28 2.03 1.43 0.402007 39 1.64 1.46 0.82

Joint project Perdue, UK & KSU (SIPAC)

Observational Results of Doe Supplementation in 2007

Doe Efficiency Multiple Births

Yr

Does Single Births

Kids/Doe Singles Weaned

Does Twin Birth

Kids/Doe Twins

Weaned

Does Triplet Birth

Kids/Doe Triplet

Weaned05 9 0.11 13 1.23 0 006 5 0.8 17 1.53 6 207 11 0.82 17 1.65 7 2.86

Joint project Perdue, UK & KSU (SIPAC)

Why Are We Seeing These Differences?

• Endophyte effect • Dry Matter Intake may peak at 4% of body weight

(DMI Summer and Fall 4%)• Lack of nutrient density during the rapid spring

growth period due to high moisture content• Grazing a monoculture pasture, reduced pasture

diversity• Need for improved milk production