Wednesday, July 1, 2020

Day 0

Using the June 15 data, the lambs were sorted by weight, age, type of rearing, and FEC. Every other lamb was allocated to either group 1 or group 2. Group 1 lambs will receive a daily supplement of energy (whole barley). Group 2 lambs will graze only. Both lambs will graze similar pastures. 

After an 11 day acclimation period, the lambs (n=79) were weighed on June 26 (day 0). FAMACHA© and body condition scores were determined. Weights ranged from 40.6 to 103.4 lbs. and averaged 72.6 lbs. ± 14.2 lbs. The median weight was 73.8 lbs.

FAMACHA© scores ranged from 1 to 3 and averaged 1.8 ± 0.4. The median FAMACHA© score was 1.8. No lamb required deworming based on the criteria of the FAMACHA© system and Five Point Check©. Body condition scores ranged from 2 to 3.5 and averaged 2.8 ± 0.4. The median body condition score was 3. Fecal samples were collected from the lambs on June 15.  Fecal egg counts (FEC) ranged from 0 to 750 epg and averaged 200 ± 171 epg.

Group 1 (supplemented)
Group 2 (pasture only)

The two groups have similar starting weights, ages, FAMACHA© and body conditions scores and fecal egg counts.

Group
Treatment
#
Age days
Weight
lbs.
FAMACHA (1-5)
BCS
(1-5)
FEC
epg
1
Supplemented
40
106.7
72.5
1.7
2.8
200
2
Pasture only
39
109.6
72.8
1.8
2.8
200

79
108.1
72.6
1.7
2.8
200

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