Sadjadi M, Becker W A
Poult Sci. 1980 Sep;59(9):1977-84. doi: 10.3382/ps.0591977.
Thirty-seven male Coturnix quail were weighed (99 g) and anesthetized. The leaf fat (1.35 g) was surgically removed from these birds at 58 days of age. Ten days later, they were single-pair mated and produced 141 male and 137 female offspring. The offspring weighed 107 g (males) and 114 g (females) at 58 days of age and had 2.53 g (male) and 1.31 g (female) of leaf fat. Estimates of heritability of body weight were .74 +/- .21 (sire-son regression), .69 +/- .22 (sire-daughter regression), .67 +/- .18 (full-sib analysis for males), and .73 +/- .18 (full-sib analysis for females). Heritability estimates of leaf fat were .71 +/- .33 (sire-son regression), .58 +/- .34 (sire-daughter regression), .65 +/- .18 (full-sib analysis for males), and .33 +/- .17 (full-sib analysis for females). Genetic correlations between body weight and leaf fat using the sire-offspring relationship were .77 +/- .10 and .74 +/- .22 for sons and 1.01 and .90 +/- .06 for daughters when estimated by arithmetic and geometric methods, respectively. Corresponding genetic correlations from the full-sib analyses were .82 +/- .08 (males) and .55 +/- .21 (females). Environmental correlations were .80 +/- .11 (males) and .87 +/- .47 (females), and phenotypic correlations were .82 +/- .09 (males) and .64 +/- .28 (females). Males had the highest percent of fat (2.5%) as compared with females (1.2%), a reversal of the broiler chicken relationship. The surgical technique developed in this experiment might be used for estimating abdominal fat in young chicken broilers. It was concluded that Coturnix quail could be used as a pilot animal in abdominal fat research provided due caution was taken of the differences between the two species.
对37只雄性日本鹌鹑进行称重（99克）并实施麻醉。在这些鹌鹑58日龄时，通过手术摘除其叶脂肪（1.35克）。10天后，将它们进行单对交配，产下141只雄性后代和137只雌性后代。这些后代在58日龄时体重分别为107克（雄性）和114克（雌性），叶脂肪含量分别为2.53克（雄性）和1.31克（雌性）。体重遗传力估计值为：父子回归法为0.74±0.21，父女回归法为0.69±0.22，雄性全同胞分析法为0.67±0.18，雌性全同胞分析法为0.73±0.18。叶脂肪遗传力估计值为：父子回归法为0.71±0.33，父女回归法为0.58±0.34，雄性全同胞分析法为0.65±0.18，雌性全同胞分析法为0.33±0.17。利用父子关系估计体重与叶脂肪之间的遗传相关性，通过算术法和几何法估计时，儿子分别为0.77±0.10和0.74±0.22，女儿分别为1.01和0.90±0.06。全同胞分析得到的相应遗传相关性为：雄性0.82±0.08，雌性0.55±0.21。环境相关性为：雄性0.80±0.11，雌性0.87±0.47，表型相关性为：雄性0.82±0.09，雌性0.64±0.28。与雌性（1.2%）相比，雄性的脂肪百分比最高（2.5%），这与肉鸡的情况相反。本实验中开发的手术技术可用于估计幼龄肉鸡的腹部脂肪。得出的结论是，在对两种物种之间的差异给予适当注意的情况下，日本鹌鹑可作为腹部脂肪研究的实验动物。
