Prediction of dairy performance of cows by theinduced lactation:III. The analysis of the resultsof the induced lactation
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概要
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Twenty four heifers of Holstein in 3 stations were administered with synthetic estrogen "Euvestin", one million I. U. in total, and their induced lactation, reproduction and growth were examined.<BR>The total milk yeild was 952.5 kg., thepeak yield 5.60 kg., and milk fat 3.35% in average. There we-re differences inresults between stations, and it suggested that not only genetic factors but also environ-mental factors played an important role.<BR>The coefficients of correlation between dairy characters were calculated and the phenotypic resemblance between half sibs in dairy characters showed fairly high value, O.318-0.588. <BR>The influence of the treatment upon reproduction was not so much excepting few cases, and that upon growth was slight.
- 日本繁殖生物学会の論文
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