In the thesis we aimed on data connected with slaughter analysis of the body, carcass yield,
feed conversion and content of chemicals, including pH of thighs and loin. In the experiment,
we used standard nutrias which have been weaned at the second month of age. There were 90
nutrias in the experiment. Nutrias were fed with complete feed mix - made by Kooperace
Hrotovice created by CLUS in Prague utility model UV 24096, ad libitum. Nutrias were
weighted every 28 days. At the age of 6, 7, and 8 months, 6 females and 6 males were chosen
and slaughtered. Results were analysed by variation of analysis, ANOVA method and with age
and sex interactions. We have used value P <= 0,05 as statistical significant difference. As a result, we have found out that males grew significantly (P <= 0,05) faster than females. The
highest feed conversion was recorded at 4th month of the experiment. Influence of age on the
weight of carcass without a head and organs was observed (P <= 0,029), carcass weight of
males increased significantly (P <= 0,001). Fat percentage was influenced by both sex
(P <= 0,001) and age (P <= 0,001). It loin part weight decreased with growing age (P <= 0,001),
and was significant (P <= 0,029).according to sex with lower decreasing in males. For the loin
percentage, there was recorded interaction of sex and age (P <= 0,038) and was affected by age
(P <= 0,007) and sex (P <= 0,007) as well. Decrease was significantly faster in females. The pH
values of loin and thighs were growing with age (P <= 0,001) and were influenced by sex as
well, for loin (P <= 0,013) and thighs (P <= 0,016). For proteins we have recorded significant
interaction of sex and age (P <= 0,009). Fat content was higher in females (P <= 0,009).
Conclusion of the thesis showed, that nutrias can be slaughtered in the age of six months,
without a negative on effect meat quality. Males are better in carcass yield, higher protein
content and lower fat percentage, in comparison of same age of females.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:258555 |
| Date | January 2016 |
| Creators | Bubeník, Tomáš |
| Contributors | Tůmová, Eva, Zdeněk, Zdeněk |
| Publisher | Česká zemědělská univerzita v Praze |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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