Dalvit C, De Marchi M, Dal Zotto R, Zanetti E, Meuwissen T, Cassandro M
Department of Animal Science, University of Padova, Agripolis, Legnaro, Italy.
J Anim Breed Genet. 2008 Apr;125(2):137-44. doi: 10.1111/j.1439-0388.2007.00707.x.
The present study was a contribution on the genetic characterization of the Burlina local cattle breed, and an approach to understanding the relationships between Burlina, Holstein Friesian and Brown Swiss which represent the majority of the dairy cattle reared nowadays in North-East Italy. The obtained results helped to clarify the genetic diversity and distinctiveness of Burlina population. In particular, the low genetic distance between Burlina and Holstein Friesian and the assignment of a moderate percentage of Burlina animals to Holstein Friesian suggested that crosses between them took place in the past, while crosses with Brown Swiss seemed to be less frequent. However, analyses of marker genotypes, showed a cluster with only Burlina individuals, which demonstrates the genetic distinctness of this breed. The Burlina breed showed the highest variability among the analysed breeds and its inbreeding coefficient was low. The data contribute to the feasibility of a conservation and selection programme for this breed and the results are useful for the implementation of a conservation strategy that should aim to conserve animals where the contribution from foreign breeds is as small as possible.
本研究对布尔利纳本地牛品种进行了遗传特征分析，并探讨了布尔利纳牛与荷斯坦弗里生牛以及瑞士褐牛之间的关系，这三个品种代表了如今意大利东北部饲养的大多数奶牛品种。所得结果有助于阐明布尔利纳牛群体的遗传多样性和独特性。特别是，布尔利纳牛与荷斯坦弗里生牛之间的遗传距离较低，且有相当比例的布尔利纳牛被归类为荷斯坦弗里生牛，这表明它们过去曾发生过杂交，而与瑞士褐牛的杂交似乎较少。然而，标记基因型分析显示存在一个仅由布尔利纳个体组成的聚类，这证明了该品种的遗传独特性。布尔利纳牛品种在所分析的品种中表现出最高的变异性，其近亲繁殖系数较低。这些数据有助于该品种保护和选育计划的可行性，研究结果对于实施旨在尽可能减少外来品种贡献的保护策略具有重要意义。
