Naslov
The influence of rape seed / oil on the quality of chicken carcasses

Autori
Kralik, Gordana ; Škrtić, Zoran ; Kušec, Goran ; Kadlec, Jaromir

Izvornik
Czech journal of animal science (1212-1819) 48 (2003), 2; 77-84

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
chicken ; carcass ; rape oil/seed ; fatty acids ; polyunsaturated fatty acids

Sažetak
The aim of the study was to investigate the effect of replacement of swine lard by rape oil and seed in broiler diets on carcass quality, fat deposition and composition of fatty acids in the lipids of breast muscles and abdominal fat. The study was performed on 72 carcasses of Ross 208 male broilers. Regarding the feeding regime, broilers were divided into three groups: in the finisher, the first group was given 7.5% swine lard, together with other feeds ; the 2nd group was given 6.2% rape oil and 3rd group received 13.5% rape seed and 2% swine lard. The following carcass weights were found in the three groups of chicken: 1944 g, 1892 g and 1826 g, respectively. The addition of rape products to broiler diets resulted in a decrease in carcass weights (P<0.01) and had a significant influence on the yield of wings (P<0.01) and beck (P<0.05) in the carcass and on the yield of skin and subcutaneous fat in the breast (P<0.01) as well as of muscle and skin with subcutaneous fat (P<0.05) in the carcass. It significantly affected (P<0.01) the difference between the deposition of abdominal adipose tissue in broilers of the 1st and 2nd as well as the 2nd and 3rd group. The addition of rape oil and seed to broiler diets lowered the content of SFA, but increased the content of MUFA and α ; ; ; -linolenic fatty acid in muscles and in abdominal fat. The differences in linoleic (C 18:2n-6) and α ; ; ; -linolenic (C18:3n-3) fatty acid were statistically significant (P<0.01). At the same time, PUFA n-6 and PUFA n-3 ratio was lowered from 21.26 to 6.63 and 7.03 in the lipids of breast muscles, and from 16.34 to 7.62 and 8.17 in the lipids of abdominal fat.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

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