Effects of Dry Period Length on Milk Yield Traits of Holstein Friesian Cattle

1 Çanakkale Onsekiz Mart University, Faculty of Agriculture, Animal Science Department, 17020, Çanakkale, Turkey
2 Kocatepe University, Faculty of Veterinary Medicine, Afyon, Turkey


UGUR, F. and M. D. AKBULUT, 2005. Effects of dry period length on milk yield traits of Holstein Friesian cattle. Bulg. J. Agric. Sci., 11: 189-191

The effects of dry period length on the milk yield traits of Holstein-Friesian cattle were investigated. Dry periods were classified in four groups named Group 1 (between 40-55 days), Group 2 (between 56-60 days), Group 3 (between 61-65 days) and Group 4 (between 66-80 days). The effects of the groups on 305- day milk yield, actual milk yield and average daily milk yield were nonsignificant (P>0.05). The maximum actual milk yield and average daily milk yield were obtained in Group 1. These findings indicated that the cattle can stay in dry period for 40 - 55 days without any negative effect on milk yield traits.

Key words: cattle; dry period; milk production>
Abbreviations: M305 = 305- day milk yield, ACMY = actual milk yield, ADMY = average daily milk yield, LL = lactation length