Naslov
Litter size traits in Black Slavonian and Nero di Parma pig breeds: effects of farrowing management and sow number per herd

Autori
Menčik, Sven ; Špehar, Marija ; Mahnet, Željko ; Knežević, Dominik ; Ostović, Mario ; Beretti , Valentino ; Superchi, Paola ; Sabbioni, Alberto

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, ostalo

Izvornik
Book of Abstracts of the 22nd ASPA Congress : Italian journal of animal science / Rossana Scipioni - : Taylor & Francis, 2017, 145-146

Skup
22nd Congress of Animal Science and Production Association

Mjesto i datum
Perugia, Italija, 13.06.2017. - 16.06.2017

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
pig, Black Slavonian, Nero di Parma, farrowing management

Sažetak
The management of reproduction of local breeds of pigs is the key factor influencing their reproductive efficiency, genetic and biodiversity. The production of offspring and their further raising make the basis of production organization, as well as management strategies in conservation procedure for local pig breeds. The aim of this study was to analyse and evaluate Litter Size (LS) traits in two autochthonous pig breeds accord-ing to their similarity in breeding procedure, as Management of Farrowing (MF) and Number of Sows per Herd (NSH), to improve their reproductive performance and self-sustainability.Data analysis included 2026 parities of Black Slavonian (BS)and 906 of Nero di Parma (NP), from the 1st to 10th parity(PAR). The LS traits referred to Total Number of Born (TNB), Number of Born Alive (NBA) and Number of Weaned (NW)piglets. Data analysis was performed using GLM (SAS). Five effects with two double interactions were included in the model of calculation to analyse the possible factors influencing between-breed differences in reproductive efficiency. The following effects were tested: breed (BR), PAR, four season of farrowing (SF) according to calendar year, NSH (three levels: 1-3, 4-10 and ˃10 reproductive sows per herd) and MF (two levels: controlled farrowing in roofed premises and farrowing at uncontrolled and non-roofed sites) with interaction in the scalar equation as BR*MF and BR*NSH. The results were expressed as Least Squares Means±SE. Pooled farrowing analysis showed TNB to be lower in BS (6.93 ± 0.08) compared with NP sows (8.31 ± 0.13), with significant effects (p<.05) ofBR, PAR, MF, BR*NSH and BR*MF. The NBA was 6.48 ± 0.09 in BS vs 8.01 ± 0.15 in NP sows, with significant effects (p<.05) of BR, PAR, MF, BR*NSH and SF. The analysis of NW with 6.24 ± 0.09 in BS and 6.47 ± 0.15 in NP sows pointed to significant effects (p<.05) of PAR, SF, MF, BR*NSH and BR*MF. Accordingly, differences between the breeds could be ascribed to the higher number of controlled farrowing in population of NP vs BS with the best results in LS within a group from 4 to 10 sows per herd.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA