酪蛋白复合基因型对濒危阿杰罗莱塞牛品种牛奶品质和凝乳特性的影响。
Influence of the Casein Composite Genotype on Milk Quality and Coagulation Properties in the Endangered Agerolese Cattle Breed.
作者信息
Albarella Sara, Selvaggi Maria, D'Anza Emanuele, Cosenza Gianfranco, Caira Simonetta, Scaloni Andrea, Fontana Annunziata, Peretti Vincenzo, Ciotola Francesca
机构信息
Department of Veterinary Medicine and Animal Production, University of Naples Federico II, via Delpino 1, 80137 Naples, Italy.
Department of Agricultural and Environmental Science, University of Bari Aldo Moro, 70126 Bari, Italy.
出版信息
Animals (Basel). 2020 May 20;10(5):892. doi: 10.3390/ani10050892.
The aim of this study was the characterization of CSN1S1, CSN2 and CSN3 genetic variability in Agerolese cattle, and the investigation of the effect of casein composite genotypes (CSN1S1, CSN2 and CSN3) on quality and coagulation traits of the corresponding milk. To these purposes, blood and milk from 84 cows were sampled and analysed. Allele frequencies at and revealed no Hardy-Weinberg equilibrium in the population with a prevalence of allele A for and allele B for . BBAAAB and BBAAAB composite genotypes were the most common in the population. BBAAAB showed a higher total solids and fat content (12.70 ± 0.16 and 3.93 ± 0.10, respectively), while BBAABB showed the best coagulation properties (RCT 12.62 ± 0.81; k 5.84 ± 0.37; a 23.72 ± 1.10). Interestingly, the A allele of was very widespread in the population; thus, it will be intriguing to verify if AA Agerolese cattle milk and the derived cheese may have better nutraceutical characteristics.
本研究的目的是对阿杰罗莱塞牛的CSN1S1、CSN2和CSN3基因变异性进行表征，并研究酪蛋白复合基因型（CSN1S1、CSN2和CSN3）对相应牛奶质量和凝乳特性的影响。为此，采集并分析了84头奶牛的血液和牛奶样本。对于[具体基因位点未给出]和[具体基因位点未给出]的等位基因频率显示该群体不符合哈迪-温伯格平衡，其中[具体基因位点未给出]的等位基因A占优势，[具体基因位点未给出]的等位基因B占优势。BBAAAB和BBAAAB复合基因型在群体中最为常见。BBAAAB的总固体和脂肪含量较高（分别为12.70±0.16和3.93±0.10），而BBAABB具有最佳的凝乳特性（凝乳时间12.62±0.81；k值5.84±0.37；a值23.72±1.10）。有趣的是，[具体基因位点未给出]的A等位基因在群体中非常普遍；因此，验证AA型阿杰罗莱塞牛的牛奶及其制成的奶酪是否可能具有更好的营养特性将是一件有趣的事情。
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