Table 3. Mean (±SD) of the lambs’ productive performance parameters as a function of the evaluated factors inherent to the lamb (sex, type of pregnancy, and lamb breed).
| BW (kg) | DWGBW (kg) | WW (kg) | DWGW-150 (kg) | ||
|---|---|---|---|---|---|
| Sex of the lamb | Male Female |
(244) 4.64 ± 1.60a (235) 4.53 ± 1.36a |
(202) 0.27 ± 0.11a (186) 0.25 ± 0.10b |
(207) 21.72 ± 10.00a (188) 20.53 ± 9.49b |
(120) 0.17 ± 0.11a (129) 0.15 ± 0.10a |
| Pregnancy type | Single Twin |
(293) 5.01 ± 1.60a (186) 3.95 ± 1.27b |
(239) 0.29 ± 0.11a (149) 0.21 ± 0.08b |
(245) 23.33 ± 10.38a (150) 17.59 ± 8.18b |
(149) 0.17 ± 0.11a (100) 0.15 ± 0.09a |
| Lamb breed | ½ hd ½ ile ½ suf ½ tex suf tex ile |
(12) 4.42 ± 2.15bc (61) 4.58 ± 2.09bc (43) 4.30 ± 1.72c (80) 4.74 ± 2.35ab (20) 3.77 ± 1.88c (93) 5.07 ± 2.58a (62) 4.42 ± 1.90c |
(11) 0.29 ± 0.15ab (47) 0.27 ± 0.13abc (41) 0.23 ± 0.10c (61) 0.25 ± 0.14abc (17) 0.23 ± 0.13bc (75) 0.30 ± 0.15a (48) 0.25 ± 0.14c |
(12) 21.63 ± 10.66ab (48) 21.28 ± 11.01ab (43) 19.75 ± 9.00b (61) 20.89 ± 11.14ab (18) 19.21 ± 9.94ab (77) 23.56 ± 12.11a (48) 20.23 ± 10.90b |
(1) 0.16 ± 0.05ab (29) 0.21 ± 0.14a (36) 0.14 ± 0.08b (33) 0.13 ± 0.07b (17) 0.14 ± 0.07b (51) 0.14 ± 0.08b (32) 0.21 ± 0.13a |
In parentheses in each column is the number of lambs (n). (BW): birth live weight; (DWGBW): average daily live weight gain from birth to weaning; (WW): weaning live weight; (DWGW-150): average daily live weight gain from weaning to 150 days of age; (hd): Hampshire Down; (ile): Ile de France; (suf): Suffolk; (tex): Texel. (½): means half-blood of the described breeds. Different letters in the columns indicate differences according to Tukey or Bonferroni test (p < 0.05) for each factor (sex, type of pregnancy, and lamb breed).