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Study on Growth and Development Pattern of Chinese Holstein Calf and Heifer

YU Zhi1，GAO Yan-xia1，2，3，CAO Yu-feng1，2，3，LI Qiu-feng1，2，3，LI Jian-guo1，2，3   

  1.  (1.College of Animal Science and Technology，Hebei Agricultural University，Baoding 071001，China；2.Research Center of Embryo Engineering Technology in Cattle and Sheep of Hebei Province，Baoding 071001，China；3.Cattle Science Institute，Hebei Agricultural University，Baoding 071001，China)

  • Revised:2014-03-11 Online:2014-06-20 Published:2014-07-24

Abstract: The objective of this study was to measure the body weight，height，length，chest and pipe circumference of 150 Chinese Holstein calf and heifers from born to breeding，aiming to revealing the growth and development pattern and drawing the growth curve. The results showed that the body weight，height，length，chest and pipe circumference of heifers at 13-month age respectively were 366.26 kg，125.69 cm，168.01 cm，139.38 cm and 17.83 cm，reached the breeding requirements. The fastest growth period of heifers was from birth to 8 month old，the speeding of growth decreased after 8 month old. The estimate of body weight for calf and heifer were：Y＝-284.087＋4.747X1＋5.664X2－3.209X3－25.352X4 and Y=96.475X22X3.

Key words:

Chinese Holstein; growth and development; body measurement; body weight