Table 2.
Least-squares means (±SE) for the main effects of ewe age and breed and solutions for udder half composite log10 somatic cell count (LSCCA) on total LWW at MSU and the USSES
Effect | Level | LWW MSU, kg | LWW USSES, kg |
---|---|---|---|
Ewe age, yr | 1 | — | 32.8 ± 5.44b |
2 | 35.0 ± 2.08b | 50.6 ± 4.76a | |
3+ | 41.7 ± 2.08a | 59.6 ± 2.71a | |
MSU/USSES breed* | Rambouillet/Crossbred | 38.6 ± 2.26 | 53.8 ± 3.26a |
Targhee/Suffolk | 38.1 ± 1.93 | 41.5 ± 3.39b | |
LSCCA† | Early | −12.8 ± 4.00* | — |
Peak | ns‡ | −14.8 ± 5.22* |
*Rambouillet and Targhee ewes were sampled at MSU, Crossbred (3/8 Suffolk, 3/8 Columbia, 1/4 Texel) and Suffolk ewes were sampled at USSES.
†Early, Peak = LSCCA quantified at early (< 5 d) and peak (30 to 45 d) lactation.
‡ns = coefficient is not different from zero (P = 0.87).
a,bMeans within an effect and column with no superscript in common are different (P < 0.05).