Twenty one Karadi cows raised at Bakrajo Farm, College of Agriculture, University of Sulaimani,
Kurdistan Region, Iraq, over the period April 2006 – May 2007 were used in this study. Cows were
naturally mated, then calved between 13th of June 2006 and 21st of January 2007. Cows were scored
according to the East of Scotland College of Agriculture system (ESCA) for their body condition at two
periods; sixty days before the expected calving, and at calving (1-3 days after calving). Data were
analyzed using the General Linear Model (GLM) procedure system by Statistical Analysis System (SAS).
The overall means of milk yield of 8 weeks, total milk yield, peak milk yield, persistency, and
lactation period were 217.76 ± 18.13 kg, 290.43 ± 34.10 kg, 35.00 ± 2.69 kg/week, 4.29 ± 0.28 week, and
89.38 ± 7.01 days, respectively. Body condition score at drying off and at calving had a significant effect
on 8 weeks, total milk yield, peak milk yield and persistency. Lactation period was affected by body
condition score at drying off, whereas body condition score at calving not affected the former trait.
Parity and season of calving not affected the former traits.
Data for the present investigation was collected on 41 native black does at the Bakrajou farm, college of
Agriculture, University of Sulaimania during March-August 2002.During the pre-weaning period, milk yield
was recorded once a week by suckling technique and hand milking. After weaning (90 days) does were hand
milked till they dry off.Total milk yield averaged 136.78 ± 7.70 kg, the maximum daily yield (1800 gm/d)
attained at 8th week of lactation. The correlation coefficients between total milk yield and monthly yield were
all positive and significant, the range being 0.32-0.98. Linear multiple regression equation using maximum R-
square improvement between total milk yield and monthly yield was calculated.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.