Table 1.
Most likely position, test statistic values and estimated effects of parent-of-origin QTL for growth and beef carcass traits that were detected with at least 5% chromosome-wise evidence for linkage.
| Traita | BTA | cMb | −logPc | P valued | QTL typee | Effect ± SEf | % σp2g | Bracketing markers (cM) |
|---|---|---|---|---|---|---|---|---|
| BWT, kg | 3 | 125 | 4.9 | 0.431 | Mat-i | 0.31 ± 0.46 | 3.8 | BM2924 (113)–RM309 (128) |
| 2.06 ± 0.44 | ||||||||
| 6 | 0 | 3.9 | 0.026 | Pat | 1.88 ± 0.49 | 2.5 | ILSTS90 (0)–TEXAN24 (5) | |
| 8 | 30 | 4.2 | 0.319 | Partial-i | 0.87 ± 0.53 | 4.9 | BM3419 (21)–BM310 (31)–TGLA10 (33) | |
| 0.80 ± 0.51 | ||||||||
| −1.64 ± 0.50 | ||||||||
| −0.15 ± 0.49 | ||||||||
| −0.10 ± 0.92 | ||||||||
| −3.05 ± 0.84 | ||||||||
| 9 | 0 | 4.4 | 0.308 | Partial-i | −0.13 ± 0.43 | 5.1 | BMS2151 (0)–BM757 (1)–ETH225 (8) | |
| −1.11 ± 0.42 | ||||||||
| −0.93 ± 0.41 | ||||||||
| 1.14 ± 0.41 | ||||||||
| 0.20 ± 0.72 | ||||||||
| 1.66 ± 0.69 | ||||||||
| 18 | 91 | 2.9 | 0.271 | Mat | −1.11 ± 0.34 | 1.8 | EAC (82)–TGLA227 (92) | |
| WWT, kg | 2 | 2 | 2.3 | 0.602 | Mat | 4.67 ± 1.65 | 1.5 | TGLA44 (0)–BM3627 (6) |
| 11 | 75 | 3.3 | 0.095 | Mat | −8.50 ± 2.42 | 2.2 | BM6445 (53)–BM746 (88) | |
| YWT, kg | 2 | 3 | 2.5 | 0.403 | Mat | 6.06 ± 2.03 | 1.6 | BY42 (2)–BM3627 (6) |
| 5 | 64 | 2.3 | 0.629 | Pat | −6.11 ± 2.19 | 1.4 | CSSM22 (59)–IGF1 (62)–TEXAN15 (69) | |
| SWT, kg | 2 | 3 | 4.2 | 0.059 | Mat | 12.44 ± 3.11 | 3.1 | BM81124 (1)–BY42 (2)–BM3627 (6) |
| 4 | 65 | 2.9 | 0.502 | Mat | 11.94 ± 3.71 | 2.0 | BM1224 (54)–BM6458 (65) | |
| 12 | 74 | 2.1 | 0.619 | Pat | −9.57 ± 3.62 | 1.4 | BM4028 (70)–EAB (73)–ILSTS33 (87) | |
| 13 | 64 | 4.2 | 0.049 | Mat | 12.85 ± 3.18 | 3.1 | TGLA381 (60)–RM327 (72) | |
| 25 | 11 | 2.4 | 0.890 | Mat-i | −14.34 ± 4.30 | 2.2 | BMC4216 (0)–BM4005 (16) | |
| −6.83 ± 4.30 | ||||||||
| HCW, kg | 2 | 6 | 3.8 | 0.050 | Mat | 8.09 ± 2.12 | 2.8 | BY42 (2)–BM3627 (6)–TGLA431 (9) |
| 4 | 65 | 2.9 | 0.341 | Mat | 8.12 ± 2.50 | 2.0 | BM6458 (65)–TEXAN28 (78) | |
| 5 | 71 | 2.9 | 0.427 | Partial | −2.53 ± 2.32 | 3.0 | TEXAN15 (69)–RM29 (71)–BM1819 (72) | |
| 4.73 ± 2.32 | ||||||||
| 9.81 ± 2.32 | ||||||||
| 25 | 7 | 2.6 | 0.696 | Mat-i | −10.62 ± 3.05 | 2.3 | BMC4216 (0)–BM4005 (16) | |
| −4.98 ± 3.00 | ||||||||
| ABF, mm | 1 | 48 | 2.5 | 0.247 | Mat | 0.79 ± 0.27 | 1.7 | BM4307 (37)–TGLA57 (49) |
| 3 | 62 | 2.2 | 0.489 | Pat | 0.90 ± 0.33 | 1.5 | INRA3 (54)–HUJ246 (65) | |
| 7 | 5 | 2.3 | 0.536 | Pat | 0.90 ± 0.32 | 1.5 | BM7160 (0)–RM12 (10) | |
| 20 | 56 | 2.7 | 0.369 | Mat | 0.82 ± 0.26 | 1.9 | BM4107 (53)–BM5004 (73) | |
| KPH, % | 2 | 57 | 4.2 | 0.023 | Pat | −0.14 ± 0.03 | 3.1 | BM4440 (57)–NPY3R (58)–TEXAN8 (60) |
| 11 | 46 | 2.5 | 0.506 | Mat | 0.10 ± 0.04 | 1.7 | TGLA327 (44)–CSSM16 (47) |
aBWT, birth weight; WWT, weaning weight; YWT, yearling weight; SWT, slaughter weight; HCWT, hot carcass weight; ABF, adjusted subcutaneous fat thickness between the 12th and 13th ribs; KPH, percentage of kidney, pelvic, and heart fat relative to carcass weight.
bLocation at which the test statistic was maximized.
cNegative logarithm of the comparison-wise P-value of the test statistic against the null hypothesis of no QTL at the most likely position for the inferred QTL model.
dP-values are genome-wide levels of evidence for linkage.
eDetected QTL type: Pat, QTL with paternal expression; Mat, QTL with maternal expression; Partial, parent-of-origin QTL with expression of both parental alleles. For gender–QTL interaction analysis, -i indicates significance of the gender interaction term with the assumption of different effects for the two breed alleles.
fEstimates of paternal and maternal effects for Pat and Mat QTL, respectively, and of paternal, maternal, and dominance effects for partial QTL. For the gender-specific QTL, the estimates of the declared POE effect are in the order of male (regular font) and female (italic font) effects.
gProportion of phenotypic variance due to the QTL, [100* (1−(residual SS under Ha/residual SS under Ho)*(dfHo/dfHa)], where dfHo and dfHa are degree of freedoms corresponding to the residuals under the Ho (no QTL) and Ha models, respectively.