RT Journal Article
SR Electronic
A1 Tvrdoň, Zdeněk
A1 Humpolíček, Petr
T1 Impact of hyperprolific line of litter size in multiplication herd
JF Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis
YR 2014
VO 57
IS 2
SP 151
OP 154
DO 10.11118/actaun200957020151
UL https://acta.mendelu.cz/artkey/acu-200902-0016.php
AB The hyperprolific line is considered to be maximally effective in pursuit of progress in sow's reproduction. Hyperprolific line efficiency is commonly evaluated in regard of breeding herd progress. We decided to study how effective it is with respect to increasing of litter size in multiplication herd. Our study is specific by using the data from practice, concretely it is based on the information about the ancestor of sows in multiplication herd. The ancestors could be the member either hyperprolific line or normal line. The information about performances of sows breed in multiplication herd was known. The mixed linear models in SAS for Windows 9.1.2. were conducted to statistical analysis. Our results indicated that no significant effect on litter size was achieved by selection criteria used in the hyperprolific line creation. In studied population no differences between TNB, NBA or NW were found on the 1<sup>st</sup> as well as on the 1<sup>st</sup>-5<sup>th</sup> litters. As we have mentioned above, the study is specific by using the data from practice. Therefore the studied population size is limited. It is necessary to take into consideration when the results are applied. Nevertheless, the results shown that other studies with larger population should be done to reevaluate the selection criteria.