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Titolo:
DIETARY MARINE-ALGAE PROMOTES EFFICIENT DEPOSITION OF N-3 FATTY-ACIDSFOR THE PRODUCTION OF ENRICHED SHELL EGGS
Autore:
HERBER SM; VANELSWYK ME;
Indirizzi:
TEXAS A&M UNIV,TEXAS AGR EXPT STN,DEPT POULTRY SCI COLLEGE STN TX 77843 TEXAS A&M UNIV,TEXAS AGR EXPT STN,DEPT POULTRY SCI COLLEGE STN TX 77843
Titolo Testata:
Poultry science
fascicolo: 12, volume: 75, anno: 1996,
pagine: 1501 - 1507
SICI:
0032-5791(1996)75:12<1501:DMPEDO>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
RAT-LIVER CELLS; DOCOSAHEXAENOIC ACID; EICOSAPENTAENOIC ACID; MENHADEN OIL; OMEGA-3-FATTY-ACIDS; RETROCONVERSION; DESATURATION; CAROTENOIDS; OXIDATION; NUTRITION;
Keywords:
MARINE ALGAE; MENHADEN OIL; N-3 FATTY ACIDS; DOCOSAHEXAENOIC ACID;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
31
Recensione:
Indirizzi per estratti:
Citazione:
S.M. Herber e M.E. Vanelswyk, "DIETARY MARINE-ALGAE PROMOTES EFFICIENT DEPOSITION OF N-3 FATTY-ACIDSFOR THE PRODUCTION OF ENRICHED SHELL EGGS", Poultry science, 75(12), 1996, pp. 1501-1507

Abstract

Two experiments were conducted to investigate the usefulness of a natural golden marine algae (MA) as a poultry ration supplement for the production of shell eggs rich in n-3 fatty acids (n-3 FA). This MA is unique due to a high concentration of docosahexaenoic acid (DHA; C-22:6n-3) and the absence of other n-3 FA normally present in marine oils such as menhaden oil (MO). In the first experiment, 60 24-wk-old SingleComb White Leghorn (SCWL) hens were divided among four dietary treatments, including a typical corn-soybean control (CON); 1.5% MO, supplying 233 mg eicosapentaenoic acid (EPA) and 155 mg DHA per d; 2.4% MA, supplying 200 mg DHA/d; and 4.8% MA, supplying 400 mg DHA/d. A second experiment using 96 56-wk-old SCWL was conducted using the same diets. In both experiments, eggs were collected weekly for 4 wk for determination of egg production parameters and yolk FA content. Each week, yolksamples were extracted, saponified, methyl estered, and quantified using:gas chromatography. Transient depressions in egg and yolk weights were noted early in Experiment 1 in response to dietary 4.8% MA. Although egg and yolk weights were not affected in Experiment 2, egg production was significantly reduced in the 4.8% MA treatment. Egg production was unaffected due to diet or week in Experiment 1. In both experiments, yolk polyunsaturated profiles were significantly influenced by diet. Dietary n-3 FA supplementation significantly increased yolk total n-3 FA with concomitant reductions in yolk n-6 FA. Although hens fed MO were supplied predominantly EPA, the principal yolk FA deposited wasDHA. Marine algae also promoted efficient yolk DHA deposition with the highest yolk DHA concentrations attained in eggs from hens fed 4.8% MA. These data indicate that utilization of MA as a direct source of dietary n-3 FA may provide an efficient alternative to current sources of n-3 FA available for the production of poultry products rich in n-3FA.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/07/20 alle ore 04:53:41