Comparison of recording results of purebred and crossbred Hereford cattle in Poland Porównanie wyników oceny użytkowości czystorasowej i mieszańcowej populacji bydła rasy hereford w Polsce
Comparison of recording results of
purebred and crossbred Hereford cattle in Poland.
The aim of the study was to compare purebred
and crossbred Hereford cattle in respect to their
compliance with the breeding goals and standards
adopted by the Polish Association of Breeders and
Producers of Beef Cattle. The study was based on
data for the years 2002–2015 from the PABPBC
and for the years 1996–2001 from the National
Center of Animal Breeding (NCAB). The properties
that were evaluated were the average body
weight of calves after birth (kg), average daily
weight gain of calves from birth to 210 days (g),
average body weight of calves at 210 days (kg)
and average milk yield of cows (kg). One can observe
a gradual decline in the share of the national
Hereford beef cattle population, it also shows
a significant decrease in the number of crossbreds
with Hereford breed. Purebred Hereford cows delivered
calves about 2–3 kg heavier than calves
from crossbreds ones. Higher birth weights, both
within the purebred and hybrid population, had
bulls. The difference between bulls and heifers
was usually 2–3 kg depending on the assessment
year. For both populations growing trend of bull
calves body weight at birth could be observed. In
case of heifers calves the growing trend was observed
in purebred population only. the average
daily weight gain of calves increased considerably
in the last years of analysis. The presented
data show that both pure-bred calves and hybrids
were characterized by relatively high body weight
gain in the rearing period. The average daily gain
was 812–1002 g for pure-bred heifers and 852–
–1045 g for pure-bred bulls and for crossbred
heifers 876–1039 g and 889–1081 g for bulls.
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