Genetic analysis of Fourier transform infrared milk spectra in Danish Holstein and Danish Jersey.
Genetic analysis of Fourier transform infrared milk spectra in Danish Holstein and Danish Jersey.
复制标题
丹麦荷斯坦牛和丹麦泽西牛的傅里叶变换红外牛奶光谱的遗传分析。
DOI：
10.3168/jds.2018-14464
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发表时间：
2019
影响因子：
3.5
通讯作者：
A. Buitenhuis
中科院分区：
文献类型：
--
作者：
R. M. Zaalberg;N. Shetty;Luc Janss;A. Buitenhuis
傅里叶变换红外牛奶光谱数据通常用于牛奶质量控制，并已被证明是由基因驱动的。本研究的目的是(1)估计5,008-925 cm-1红外区1,060个波数的遗传力，(2)估计遗传力增加的波数之间的基因组相关性，以及(3)比较丹麦荷斯坦和丹麦泽西奶牛的结果。对于丹麦荷斯坦奶牛，有3275头奶牛和19656头牛奶记录。在丹麦泽西岛，有3408头奶牛和20228头牛奶记录。我们使用了分层混合模型，并采用了贝叶斯方法。个体波数遗传力在丹麦荷斯坦为0.00-0.31，在丹麦泽西为0.00-0.30。计算了15个选定的波数之间的基因组相关性，丹麦荷斯坦和丹麦泽西的波数从弱到很强(0.03到0.97和-0.11到-0.97)。在所选择的15个波数中，观察到两组波数，其中组间基因组相关为负，组内为正相关。与丹麦泽西奶牛相比，丹麦荷斯坦奶牛的遗传力和基因组相关性更高，但两个品种的遗传力和基因组相关性相似。品种差异在与乳糖相互作用的中红外区域和与蛋白质相互作用的光谱区域最为明显。总之，傅里叶变换牛奶光谱的个体波数的遗传力是中等的，并且在整个光谱的波数之间观察到了很强的基因组相关性。丹麦荷斯坦奶牛的遗传力和基因组相关性较高，品种差异最大的是与蛋白质或乳糖相互作用的光谱区域。
Fourier transform infrared milk spectral data are routinely used for milk quality control and have been revealed to be driven by genetics. This study aimed to (1) estimate heritability for 1,060 wavenumbers in the infrared region from 5,008 to 925 cm-1, (2) estimate genomic correlations between wavenumbers with increased heritability, and (3) compare results between Danish Holstein and Danish Jersey cows. For Danish Holstein, 3,275 cows and 19,656 milk records were available. For Danish Jersey, 3,408 cows and 20,228 milk records were available. We used a hierarchical mixed model, with a Bayesian approach. Heritability of individual wavenumbers ranged from 0.00 to 0.31 in Danish Holstein, and from 0.00 to 0.30 in Danish Jersey. Genomic correlation was calculated between 15 selected wavenumbers, and varied from weak to very strong, in both Danish Holstein and Danish Jersey (0.03 to 0.97, and -0.11 to -0.97). Within the 15 selected wavenumbers, a subdivision into 2 groups of wavenumbers was observed, where genomic correlations were negative between groups, and positive within groups. Heritability and genomic correlations were higher in Danish Holstein compared with Danish Jersey, but followed a similar pattern in both breeds. Breed differences were most pronounced in the mid-infrared region that interacts with lactose and the spectral region that interacts with protein. In conclusion, heritability for individual wavenumbers of Fourier transform milk spectra was moderate, and strong genomic correlations were observed between wavenumbers across the spectrum. Heritability and genomic correlations were higher in Danish Holstein, with the strongest breed differences showing in spectral regions interacting with protein or lactose.
影响因子：
9.8
作者：
Browning, Brian L.;Browning, Sharon R.
通讯作者：
Browning, Sharon R.