Izlaganje sa skupa

ALLOMETRIC VS. DYNAMIC MODELS IN THE INVESTIGATION OF PIG GROWTH

Goran Kušec ; Poljoprivredni fakultet, Zavod za sepcijalnu zootehniku
Ivona Đurkin ; Poljoprivredni fakultet, Zavod za sepcijalnu zootehniku
Gordana Kralik ; Poljoprivredni fakultet, Zavod za sepcijalnu zootehniku
Ulrich Baulain ; Friedrich-Loeffler-Institut für Nutztiergenetik
Erhardt Kallweit ; University of Goettingen

Sažetak

A total of 68 barrows, divided into 4 groups regarding
the MHS genotype and feeding regime (intensive and
restrictive). Data on muscle and fat growth were obtained
by magnetic resonance imaging (MRI). Allometric growth
analysis showed that muscle tissue grew proportionally
with the increase of live weight; fat grew faster in relation
to live weight in all investigated groups of pigs. Significant
differences in growth coefficients for fat were found only
between feeding groups. The analysis by asymmetric
S-function was more informative. Muscle growth pattern
significantly differed between the groups of investigated
pigs (Nn pigs performed better under intensive feeding
than under restrictive feeding regime, while no difference
was found between NN pigs from two feeding regimes).
The optimal slaughter weight of pigs calculated on the
basis of live weight and muscle growth (130 and 126
kg for intensively fed NN and Nn pigs, respectively, and
about 114 kg for both genotypes from the restricted group
of pigs). Growth patterns of fat differed significantly only
between the feeding groups. It appears that asymmetric
S-function is more accurate and informative model than a
simple allometric function, providing a more robust base
for important decisions in fattening of pigs.

Ključne riječi

Growth models; MRI; pigs

Hrčak ID:

45996

URI

https://hrcak.srce.hr/45996

Datum izdavanja:

1.11.2008.

Podaci na drugim jezicima: hrvatski

Posjeta: 1.979 *