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Titolo:
Meat quality of broilers fattened deliberately slow by cereal mixtures to higher age. 2. Total lipid, cholesterol and fatty acid content
Autore:
Komprda, T; Zelenka, J; Tieffova, P; Stohandlova, M; Foltyn, J; Fajmonova, E;
Indirizzi:
Mendel Univ Agr & Forestry Brno, Brno, Czech Republic Mendel Univ Agr & Forestry Brno Brno Czech Republic rno, Czech Republic State Plant Protect Adm Brno, Brno, Czech Republic State Plant Protect AdmBrno Brno Czech Republic , Brno, Czech Republic
Titolo Testata:
ARCHIV FUR GEFLUGELKUNDE
fascicolo: 1, volume: 65, anno: 2001,
pagine: 38 - 43
SICI:
0003-9098(200102)65:1<38:MQOBFD>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
ARACHIDONIC-ACID; LINOLENIC ACID; METHYL-ESTERS; LIPOPROTEIN; TISSUES; DIET; NUTRITION; MUSCLE; GROWTH;
Keywords:
broilers; growth rate; cholesterol; PUFA; arachidonic acid; eicosapentaenoic acid; docosohexaenoic acid;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
28
Recensione:
Indirizzi per estratti:
Indirizzo: Komprda, T Mendel Univ Agr, Dept Food Technol, Zemedelska 1, Brno 61300, Czech Republic Mendel Univ Agr Zemedelska 1 Brno Czech Republic 61300 epublic
Citazione:
T. Komprda et al., "Meat quality of broilers fattened deliberately slow by cereal mixtures to higher age. 2. Total lipid, cholesterol and fatty acid content", ARCH GEFLUG, 65(1), 2001, pp. 38-43

Abstract

Three experimental groups (twelve animals each) of female chickens of the Ross 208 hybrid combination were fattened intentionally slow by cereal mixtures (given from the age of six weeks exclusively). The experimental diets were as follows: wheat-type (W) diet fed restrictively (WR), and maize-typediet (M) fed either restrictively (MR) or semi-ad libitum (MS). The fourthgroup of chickens (control) was fattened a commercial feed mixture ad libitum. Birds were slaughtered when they reached the live weight of 2200 g (46, 74, 87 and 90 days for control, MS, WR and MR group), and were analysed for cholesterol by liquid chromatography and fatty acids by gas chromatography in breast meat and thigh meat. Slowly growing chickens of all groups deposited more (P < 0.01) cholesterol in breast meat and thigh meat as compared to the control group. MS-chickens had higher (P < 0.01) cholesterol content in breast meat and thigh meat than WR-chickens. Total polyunsaturated fatty acids (PUFA) content in thighmeat lipids, and alpha -linolenic acid and linoleic acid concentration in both breast meat Lipids and thigh meat lipids of chickens of all slow growing groups was lower (P < 0.01) as compared to control chickens, despite thehigher content of total PUFA in W and M diets in comparison with the control diet. Less (P < 0.01) linoleic acid was deposited in thigh meat lipids of WR-chickens than in MR-chickens. Despite the higher linoleic/alpha -linolenic acid ratio in the experimental finishers (W, M), content of eicosapentaenoic acid in thigh meat lipids did not differ (P > 0.05) between all groups of chickens, and content of eicosapentaenoic acid in breast meat lipids of WR-chickens and docosahexaenoic acid in breast meat lipids of MR-chickens was even higher (P < 0.01) in comparison with the control group. Concentration of arachidonic acid decreased (P < 0.01) both in breast meat lipids and in thigh meat lipids in the sequence: restrictively fed chickens (WR, MR) > semi- nd libitum fed chickens (MS) > fast growing chickens (control). Arachidonic acid content in breast meat and thigh meat was 67-89 and 113-135mg/100 g of the fresh matter in experimental chickens (W, M), and 14 and 17 mg/100 g in control chickens, respectively. We conclude that meat of chickens fattened intentionally slow by the cereal diets and slaughtered at twelve weeks contained 20% more cholesterol and six times more arachidonic acid, and was therefore less favourable from theviewpoint of a healthy human nutrition than meat of conventionally fed broilers slaughtered at six weeks of age.

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Documento generato il 01/12/20 alle ore 22:37:21