Original scientific paper
GROWTH OF WEANED PIGS AND CORRELATION BETWEEN LIVE BODY WEIGHT GAIN AT THE START AND FINISH OF REARING PERIOD
Tomislav Balenović
; Veterinary Faculty, University of Zagreb, Zagreb, Republic of Croatia
Velimir Sušić
; Veterinary Faculty, University of Zagreb, Zagreb, Republic of Croatia
Ivan Vrbanac
; Veterinary Faculty, University of Zagreb, Zagreb, Republic of Croatia
Boris Krsnik
; Veterinary Faculty, University of Zagreb, Zagreb, Republic of Croatia
Ivica Valpotić
; Veterinary Faculty, University of Zagreb, Zagreb, Republic of Croatia
Abstract
In the intensive swine industry study of age-related growth rates is a prercquisite for successful production. Thus, in a large swine pupulation with homogeneous breed/sex composition it is important to know the possibilities of growth in all age groups of pigs to attain management related to the expected production To determine possible correlation between age and live body wight gain of pigs (of both sexes) during the rearing period we have used data of individual weighing in 7-day intervals. The pigs were fed standard feed mixtures ad libitum during the experiment. Preliminary data concerning age-related growth of rearing pigs indicate that the pigs 24.34 ± 0.02 days old (ranging from 19 to 29 days) weighed on average 5.46 ± 0.1 kg (ranging from 3.5 to 8.3 kg) at weaning. At the end of the rearing period pigs were 80.34 ± 0.27 days old (ranging from 75 to 85 days) and weighed on average 20.10 ± 0.43. We have obtained significant positive correlation( r= 0.538; P< 0,01) and regression line for live body weight gain in 80 day-old pigs depending on their live body weight gain at 24 days (Yc =7.06 + 2.39 x). There is no significant correlation between sex and a live body weight change.
Keywords
correlation; age related growth; live body weight postweaning pigs
Hrčak ID:
163925
URI
Publication date:
18.7.1995.
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