Effects of level of supplementation in late gestation on performance of meat goat does

and kids

T. Hutchens, M, Neary, K. Andries, J. TowersUniv. of KY, Purdue Univ. & KY State Univ.

(2005-2007) Spring Pasture Kidding Programs

Supplemented and Non-Supplemented • Objective was to find the lowest input level for a

commercial goat herd kidding on KY-31 tall fescue E. • Supplementation:– Significant to highly significant differences in 60 and 90

day weaning weights.– Increase in doe efficiency for number of kids weaned– Improved kid weaning weights as a percent of doe body

weight.– Increased doe efficiency for weaning multiple births. – Increase in herd efficiency for numbers of kids

weaned/doe exposed.

Energy Needs for Meat Goat Female Graph 1.

1st Trimester Preg. Day(0– 50)

3rdTrimester Preg. Day (100-150

2ndTrimester Preg. Day (50-100)

LactationDay (150-225)

Graph modified from Langston Univ. online certification short course.

Non-lactating Period Day(225-365)

• Objective: to evaluate if productivity of Boer x Kiko does can be influenced by supplementation strategy in last 56 days of gestation– Second trimester – grass hay– 24 Boer x Kiko does (3-4 years of age)– Ultrasound verification 2 feti– Does were randomly allocated into 6 does per

treatment group – Does were fed fescue & alfalfa mix hay, 15% CP,

56.9% NDF – DM bases– Hay was chopped and fed free choice in

individual feeders (disappearance and refusals were recorded weekly)

– Supplement was 1 of 4 soybean hull treatments fed at 1 and 2 percent of initial average BW (48.2 ± 3.3 kg)

– Supplement level was (0.45 kg and 0.9 kg)

Treatments were soybean hulls fed at:• 1=1% SBH for 28d + 2% SBH 28d (M,H)• 2=0% SBH for 28d +2% SBH 28d (L,H)• 3=2% SBH for 28d +2% SBH 28d (H,H)• 4= 1% SBH for 28d +1% SBH 28d (M,M)• Supplementation period was 56 days• Doe body weights and body condition

scores were taken at – 14 day intervals for the 56 day gestational

period, – 24 hours after kidding, – 30, 60, 90 days during lactation

• Kid body weights were recorded at – birth, and 30,60,90 days – average daily gain was calculated

Effects of Supplementation Pre-Kidding Doe Performance

Treatments1

Items 1 (1%, 2%) 2 (0%, 2%) 3 (2%, 2%) 4 (1%, 1%) SEM

Script MH LH HH MM

Initial Wt kg 49.29 48.67 46.87 48.16 3.30

Initial BCS 2.33 2.58 2.42 2.58 0.17

14-d kg 51.28a,b 48.12a 53.33b 52.24b 0.8

14-d BCS 2.58 2.53 2.53 2.78 0.07

28-d kg 53.98a 52.01a 57.60c 54.89b,c 0.72

28-d BCS 2.56 2.46 2.52 2.71 0.17

42-d kg 57.15a 54.91a 60.76b 57.46a 0.77

42-d BCS 2.38 2.30 2.86 2.71 0.15

56-d kg 62.99 58.02 65.10 60.50 3.60

56-d BCS 2.37 2.23 2.43 2.73 0.28

1Means within rows not followed by common superscript differ (P≤ .05)

Effects of Supplementation Post-Kidding Doe Performance

Treatments1

Items 1 (1%, 2%) 2 (0%, 2%) 3 (2%, 2%) 4 (1%, 1%) SEM

Script MH LH HH MMKidding wt. kg 49.72 49.49 52.15 49.29 1.44

Kidding BCS 2.33 2.34 2.41 2.50 0.13

Lactation wt kg

30-d kg 42.94 41.19 42.90 41.32 1.20

30-d BCS 1.53 1.31 1.51 1.47 0.14

60-d kg 41.85 41.80 42.02 40.80 0.97

60-d BCS 1.41 1.42 1.33 1.34 0.17

90-d kg 42.45 41.07 41.55 40.64 0.97

90-d BCS 1.34 1.25 1.34 1.41 0.14

1Means within rows not followed by common superscript differ (P≤ .05)

Effect of Dam Supplementation Level Growth and Performance of Kids

Treatments1

Items 1 (1%, 2%) 2 (0%, 2%) 3 (2%, 2%) 4 (1%, 1%) SEM

Script MH LH HH MMBirth weight, kg 3.62 3.21 3.46 3.30 0.14

30-d kg 7.88 8.11 8.11 7.91 0.37

60-d kg 11.93 12.87 12.39 12.33 0.58

90-d kg2 14.25 16.04 15.91 15.26 0.64

ADG kg

Birth-30 –d .138 .166 .155 .154 .009

30-60-d .142 .163 .150 .152 .009

60-90-d .116a .144b .138a,b .133a,b .007

1Means within rows not followed by common superscript differ (P≤ .05)2Notter, D. 2009. The 2008 Kiko Goat National Genetic Evaluation. (Adjustment factors)

Effect of Dam Supplementation Level Growth and Performance of

Male/Female KidsGender1

Items Intact Male Female SEM

Birth weight, kg 3.57a 3.22b 0.09

30-d, kg 8.54a 7.46b 0.25

60-d, kg 13.37a 11.38b 0.39

90-d, kg 16.63a 14.10b 0.43

ADG kg

Birth-30 d 0.165a 0.142b 0.007

30-60 d 0.163a 0.140b 0.006

60-90 d 0.144a 0.121b 0.005

1Means within rows not followed by common superscript differ (P≤ .05)

Daily Hay Disappearance for Does in Late Gestation

Treatments1

Intake as fed 1 (1%, 2%) 2 (0%, 2%) 3 (2%,2%) 4 (1%,1%) SEM

Script MH LH HH MM

0-14 d, kg 1.24 1.25 1.15 1.39 0.08

14-28 d, kg 1.73 1.72 1.69 1.73 0.04

28-42 d, kg 1.63 1.69 1.74 1.77 0.08

42-56 d, kg 1.72 1.67 1.79 1.79 0.09

0-28 d, kg 1.49 1.50 1.43 1.57 0.05

28-56 d, kg 1.60 1.70 1.72 1.83 0.07

0-56 d, kg 1.59 1.62 1.62 1.72 0.051Means within rows not followed by common superscript differ (P≤ .05)

Remarks

• Late gestation supplement levels use in this trial did not affect growth and performance of meat goat does or kids.

References

• Data analyzed by one way analysis of variance using mixed model procedures (SAS, 2003).

• Notter, D. 2009. The 2008 Kiko Goat National Genetic Evaluation. Kiko Goat NSIP Notebook No. 1, National Sheep Improvement Program, Centennial, Co, 12 pp.

Questions

Soybean Hulls

Chopped Mixed Hay

Table-1: Effects of Supplementation on Doe Performance

Treatments1

Items 1 (1%, 2%) 2 (0%, 2%) 3 (2%, 2%) 4 (1%, 1%) SEM

Script MH LH HH MM

Initial Wt kg 49.29 48.67 46.87 48.16 3.30

Initial BCS 2.33 2.58 2.42 2.58 0.17

Amt fed 0.45kg + 0.9kg 0.0kg + 0.9kg 0.9kg + 0.9kg 0.45kg + 0.45kg1Means within rows not followed by common superscript differ (P≤ .05)Average initial BW (48.2 ± 3.3 kg)