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Effect of gilt growth rate and backfat thickness on reproductive performance
ID Flisar, Tina (Avtor), ID Malovrh, Špela (Avtor), ID Urankar, Janja (Avtor), ID Kovač, Milena (Avtor)

URLURL - Predstavitvena datoteka, za dostop obiščite http://aas.bf.uni-lj.si/zootehnika/supl/3-2012/PDF/3-2012-199-203.pdf Povezava se odpre v novem oknu

Izvleček
Objective of this study was to analyze the effect of growth rate and backfat thickness at the end of test on reproductive performance in the first three parities, and association with lifetime productivity and longevity. Data of gilt productive and sow reproductive performance from large Slovenian multiplying farms was used. Altogether 8139 animals of two maternal genotypes were involved: Slovenian Landrace - line 11 (SL11) and hybrid 12 (Slovenian Large White X Slovenian Landrace - line 11). Statistical model included owner and sow genotype as fixed effects. Backfat thickness and growth rate were included as linear regression. Data was analyzed by GLM procedure in SAS/STAT. Average weight of gilts was 129.4 +/- 9.6 kg at 206.7 +/- 6.8 days of age, indicating average growth rate of 626 g/day. Gilts had 13.26 mm of backfat thickness, in range from 5.5 mm to 31.5 mm. The increase of 100 g of daily gain resulted in increase of 0.54 +/- 0.08 liveborn piglets in the 1st, 0.71 +/- 0.11 in the 2nd, 0.64 +/- 0.11 in the 3rd parity. Sows with higher growth rate were culled earlier (47 days). Gilts with thicker backfat had smaller litter size in the first three parities. Backfat thickness did not influence lifetime productivity, although sows with 10 mm thicker backfat farrowed more litters (0.41 in average) in lifetime and were culled 50 days later. Growth rate and backfat thickness did not affect the cost per liveborn piglet as number of days per liveborn piglet did not change.

Jezik:Angleški jezik
Ključne besede:pigs, gilts, management, growth rate, backfat thickness, lifetime production, reproductive performance
Vrsta gradiva:Delo ni kategorizirano (r6)
Tipologija:1.08 - Objavljeni znanstveni prispevek na konferenci
Organizacija:BF - Biotehniška fakulteta
Leto izida:2012
Št. strani:Str. 199-203
Številčenje:Suppl. 3
PID:20.500.12556/RUL-447 Povezava se odpre v novem oknu
UDK:636.4
ISSN pri članku:1854-4800
COBISS.SI-ID:3113096 Povezava se odpre v novem oknu
Datum objave v RUL:11.07.2014
Število ogledov:2110
Število prenosov:464
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Gradivo je del zbornika

Naslov:Livestock production as a technological and social challenge
COBISS.SI-ID:263173888 Povezava se odpre v novem oknu

Gradivo je del revije

Naslov:Acta agriculturae slovenica
Založnik:Biotehniška fakulteta
ISSN:1854-4800
COBISS.SI-ID:225696256 Povezava se odpre v novem oknu

Sekundarni jezik

Jezik:Neznan jezik
Ključne besede:prašiči, svinjke, menedžment, hitrost rasti, debelina hrbtne slanine, življenjska prireja, reprodukcija

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