Effect of High Dietary Copper on Fatty Acid Composition of the Chick

Poupoulis, C.; Jensen, L. S.

doi:10.3382/ps.0550122

Cited by 7 publications

(2 citation statements)

References 12 publications

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“…copper. Growth rate was lower for chicks fed the corn starch diet with no added corn oil, possibly because of an essential fatty acid deficiency, although later studies did not reveal a marked increase in eicosatrienoic acid (20:3) which is a characteristic biochemical sign in animals deficient in essential fatty acids (Poupoulis and Jensen, 1975). Copper accentuated the growth depression.…”

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confidence: 98%

Effect of High Dietary Copper on Gizzard Integrity of the Chick

Poupoulis

Jensen

1976

Poultry Science

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Six experiments were conducted with male broiler chicks kept in battery brooders to investigate the effects of feeding diets high in copper on the integrity of the gizzard lining. Conventional and corn starch-soy basal diets were used. Slight improvements in body weight gain and/or feed efficiency were observed when the diets were supplemented with 250 p.p.m. copper as as CuSO4-5HSO, but higher levels (500 to 1000 p.p.m.) depressed growth and decreased feed efficiency. Little or no gizzard erosion was seen in birds fed the practical ration without added copper. Gizzard erosion was observed with 250 p.p.m. copper and the severity of the condition increased with higher levels. With the same level of copper supplementation, severity of gizzard erosion was greater when chicks were fed the corn starch-soy diet than when fed the practical diet. Adding 0.5 p.p.m. selenium to the practical diet containing 1000 p.p.m. copper slightly improved the appearance of the gizzard lining, although the subjective scoring index was significantly (P less than 0.05) lower in only one of two experiments. The addition of zinc, vitamin E, and vitamin B12 did not prevent the gizzard damage caused by high copper levels. Severity of gizzard erosion was significantly reduced by adding 0.35% cholic acid to the semipurified diet with 500 p.p.m. copper, but not to the practical diet with 100 p.p.m. copper. There was no correlation between acidity of the gizzard contents and severity of the erosion.

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confidence: 98%

Effect of High Dietary Copper on Gizzard Integrity of the Chick

Poupoulis

Jensen

1976

Poultry Science

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“…In pigs, the inclusion of supplemental copper decreased the melting point and increased the proportion of unsaturated fatty acids at the expense of SFA (Amer and Elliot, 1973). In broiler chickens, however, supplemental copper at 250 mg/kg in the diet did not reduce the ratio of palmitic and stearic acid to palmitoleic and oleic acid (Poupoulis and Jensen, 1976). Inconclusive effects of feeding copper to laying hens at 150 to 750 mg/kg on the fatty acid composition of liver and adipose tissue lipids have been reported by Jackson and Stevenson (1981).…”

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confidence: 99%

Influence of dietary fat source and copper supplementation on broiler performance, fatty acid profile of meat and depot fat, and on cholesterol content in meat

Skřivan¹,

Skřivanová²,

Marounek

et al. 2000

British Poultry Science

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1. Three hundred and twenty d-old chickens were fed on a wheat/maize-soyabean meal diet supplemented with (i) 50 g/kg lard, (ii) 25 g/kg lard and 25 g/kg rapeseed oil, (iii) 50 g/kg rapeseed oil, and (iv) 50 g/kg rapeseed oil and 200 mg copper per kg as copper sulphate pentahydrate. 2. Final weights at 39 d of age in chickens receiving rapeseed oil were lower by 9% than in those fed on the diet containing only lard (P<0.05). The fatty acids profiles of lipids extracted from the tissues of 10 chickens per group reflected those of the diets. 3. The polyunsaturated fatty acid (PUFA) content of breast muscles and abdominal fat (expressed as a percentage of total fatty acids) was increased and the ratio of n-6:n-3 fatty acids was decreased by the substitution of lard by rapeseed oil (P<0.001). These changes were more pronounced for the adipose tissue than for breast muscles. 4. Copper sulphate supplementation increased the final body weight of chickens by 4.3% (P<0.05), reduced the saturated fatty acid (SFA) proportion (P<0.05) in abdominal fat and increased the PUFA:SFA ratio (P<0.05). The magnitude of improvement, however, was small. 5. The substitution of rapeseed oil for lard decreased the concentration of cholesterol in breast muscles by 13%. Copper supplementation further reduced the cholesterol content by 25%. Both effects were significant (P<0.001).

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Identification of the component responsible for the effects of added dietary copper sulphate in the female domestic fowl

Jackson

Stevenson

1981

J Sci Food Agric

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Sulphate, as sulphuric acid, was fed to Shaver 288 and Warren Studler SSL laying hens for 280 days at levels equivalent to 0.2, 0.4, 0.6, 0.8 and 1.0 g sulphate kg-l diet. The results obtained were compared with those found using similar diets to which the sulphate was added as copper sulphate pentahydrate (CuSO4. ~H z O ) .Addition of HzS04 had no effect on food intake, food conversion efficiency, body-weight or egg production. The addition of CuSO4 caused adverse effects on food intake, egg production and body-weight. The HzS04 had no effect on liver, kidney, oviduct, ovary and gizzard weight per unit body-weight. CuSO4 decreased ovary and oviduct weights and increased gizzard weight. HzS04 had no significant effect on liver copper (Cu) concentrations but CuSO4 increased liver Cu. The highest level of CuSO4 addition depressed liver lipid concentration in the Shaver 288 birds. Both the HzS04 and the CuSO4 affected the levels of individual fatty acids.

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Effect of High Dietary Copper on Fatty Acid Composition of the Chick

Cited by 7 publications

References 12 publications

Effect of High Dietary Copper on Gizzard Integrity of the Chick

Effect of High Dietary Copper on Gizzard Integrity of the Chick

Influence of dietary fat source and copper supplementation on broiler performance, fatty acid profile of meat and depot fat, and on cholesterol content in meat

Identification of the component responsible for the effects of added dietary copper sulphate in the female domestic fowl

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