1Department of Engineering, Production and Agricultural Economy, University of La Laguna La Laguna, Tenerife, Spain.
2Department of Nutrition Y Alimantos Saltillo, University Autonoma Agraria Antonio Narro, Coah-25315, Mexico.
3Department of Parasitology, Ecology and Genetics University of La Laguna La Laguna, Spain.
The influence of year and season of birth, parity of dam, type of birth and sex of lamb on growth traits of Canarian hair lambs was examined using data on 3206 Canarian lambs from 1508 dams and 44 sires raised in the Tenerife Island. Ram lambs had higher (P<0.001) birth weight (BW), 60-d weaning weight (WW) and pre-weaning daily weight gain than ewe lambs. Season had no effect on birth weight but WW was the lowest in winter. BW, WW and preweaning daily gain were highest in single born lambs. Parity had no definite effect on any of the studied parameters.
Type of birth, parity of dam, weight gain, sheep
