Second laying cycle effects of a mixture of organochlorine insecticides on broiler breeder hens

Kan, C.A.; Rooyen, Jenny C. Jonker-Den

doi:10.1021/jf60216a060

Cited by 4 publications

(13 citation statements)

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“…They are all calculated (if possible) on p,p-DDT in the feed and p,p-DDT + p,p-DDE in the product. The range is partly explicable by the influence of egg production as shown by Cecil et al (1973) and our own experiments (Kan and Tuinstra, 1976; Kan and Jonker-den Rooyen, 1978a). The low values of Singh et al (1970) and Smith et al (1970) are probably due to the use of a mixture of , '-DDT and other isomers or metabolites, but no details on this point are available.…”

Section: Ddtmentioning

confidence: 67%

“…This half-value time depends on egg production and thus on excretion through eggs as it was shortest in high-producing hens. On the contrary, in low-producing hens no real depletion was detected (Kan and Jonker-den Rooyen, 1978a).…”

Section: Half-value Times In Laying Hensmentioning

confidence: 84%

“…The influence of laying percentage changed by Ca level in the diet (Cecil et al, 1973) or age of the birds (Kan and Tuinstra, 1976; Kan and Jonker-den Rooyen, 1978a) on accumulation in both eggs and fat has been clearly demonstrated.…”

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confidence: 99%

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Accumulation of organochlorine pesticides in poultry: a review

Kan¹

1978

J. Agric. Food Chem.

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Accumulation ratios (level of pesticide in fat or egg to its level in the feed) of hexachlorobenzene (HCB),•, ß-, and 7-hexachlorocyclohexane (HCH), heptachlor and its epoxide, DDT, dieldrin, aldrin, endrin, and methoxychlor in laying hens and broilers are discussed. The pesticides can be grouped into several categories according to accumulation ratios: highly accumulating like HCB, d-HCH, heptachlor epoxide, dieldrin, aldrin; intermediate like heptachlor, endrin; low like a-and 7-HCH; and very low like methoxychlor. Depletion of residues of the pesticides in laying hens and eggs is correlated with the accumulative properties. Depletion of residues in broilers is mostly governed by growth rate and thus by dilution in the fat.

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Section: Ddtmentioning

confidence: 67%

Section: Half-value Times In Laying Hensmentioning

confidence: 84%

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Accumulation of organochlorine pesticides in poultry: a review

Kan¹

1978

J. Agric. Food Chem.

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“…After reaching a plateau in residues in eggs, differences in residues between samples of different dates in these experiments still occur (Kan and Jonker-den Rooyen, 1978b; Waldron and Naber, 1974). It has not been es-Spelderholt Institute for Poultry Research, Ministry of Agriculture and Fisheries, 7361 DA Beekbergen, Netherlands. tablished whether this variation is due to day-to-day differences in the analytical procedures, to changes for one hen, or to differences between hens, as generally not all eggs laid are used for analysis.…”

mentioning

confidence: 72%

“…The effect of egg production on accumulation of organochlorine pesticides in laying hens has been clearly demonstrated (Cecil et al, 1973; Kan and Tuinstra, 1976b; Kan and Jonker-den Rooyen, 1978b). The accumulation ratios in high-producing (laying percentage >90%) hens could, however, not be predicted from those experiments.…”

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confidence: 96%