engleski

Growth of weaned pigs and correlation between live body weight gain at the start and finish of rearing period

In the intensive swine industry study of age-related growth rates is a prerequisite for successful production. Thus, in a large swine population with homogeneous breed / sex composition it is importaant 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 of individual weighing in 7-day intervals. The pigs were fed standard fed mixtures ad libitum during the experiment. Preliminary data concerning age-related growth of rearing pigs indicate that the pigs 24.34 ą 0.02 days old (ranging from 19 to 29 days) weighed on average 5.46 ą 0.1 kg (ranging from 3.5 to 8.3 kg) at weaning. At the end of the rearin period pigs were 80.34 ą 0.27 days old (ranging from 75 to 85 days) and weighed on average 20.10 ą 0.43. we have obteined 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 + 2.39x).There is no significant correlation between sex and live body weight change.

correlation; age related growth; live body weight; postweaning pigs

nije evidentirano