求翻译：运用QTL定位技术使人们更好地完善了对奶牛经济性状的利用，不受性别、年龄的限制，克服了传统生化方法的缺陷，为早期选种提供了可行的方法。是什么意思？

The use of QTL mapping technology makes it perfect for cows to better use of economic traits, from sex, age limits, to overcome the shortcomings of traditional biochemical methods for early selection provides a feasible method.

Using QTL positioning technology to bring about a better refined the use of cows, and economic nature of the restriction is not affected by gender, age, and overcome the shortcomings of traditional biochemical methods for early elections, which provide a viable way.

Caused the people using the QTL localization technology to consummate well to the cow economical character use, the sex, the age limit, has not been overcome the traditional biochemistry method flaw, has provided the feasible method for the early seed selection.

Using QTL positioning technologies enable people to improve the utilization of economic traits in dairy cattle, not limited by gender, age, to overcome the defects of traditional biochemical methods, provided a viable way for early seed selection.

Using QTL positioning technologies enable people to improve the utilization of economic traits in dairy cattle, not limited by gender, age, to overcome the defects of traditional biochemical methods, provided a viable way for early seed selection.