Cattle grazing

The results of metabolism studies with laboratory animals and livestock indicate that endosulfan does not bioconcentrate in fatty tissues and milk. Lactating sheep administered radiolabeled endosulfan produced milk containing less than 2% of the label. Endosulfan sulfate was the major metabolite in milk (Gorbach et al. 1968). A half-life of about 4 days was reported for endosulfan metabolites in milk from survivors of a dairy herd accidentally exposed to acutely toxic concentrations of endosulfan endosulfan sulfate accounted for the bulk of the residues detected in the milk (Braun and Lobb 1976). No endosulfan residues were detected in the fatty tissue of beef cattle grazed on endosulfan-treated pastures for 31-36 days (detection limits of 10 ppm for endosulfan, 40 ppm for endosulfan diol) the animals began grazing 7 days after treatment of the pastures. Some residues were detected in the fatty tissue of one animal administered 1.1 mg/kg/day of endosulfan in the diet for 60 days. No endosulfan residues were... 

Pastushenko, V., Matthes, H-D., Hein, T. Holzer, Z. (2000) Impact of cattle grazing on meat fatty acid composition in relation to human nutrition. Proceedings of the 13th International IFOAM Scientific Conference, Basel, Switzerland, pp 293-6. 

In view of the above, groundwater in the vicinity of the landfill should be used as a drinking water supply only if the PBB concentrations are vigorously monitored. Cattle grazing should be restricted to the extent necessary. 

Harradine IR, McDougall KW. 1986. Residues in cattle grazed on land contaminated with heptachlor. Aust Vet J 63 419-422. 

On a comparative basis, Pu, Am and Cm tend to be assimilated from the G.I. tract into the internal body in the following order Pu < Am < Cm (Figure 3). When Pu-nitrate is inhaled in aerosol form by dogs (27), daughter Am-241 tends to be transported more from lung and lymph nodes to liver than does plutonium (Fig. 3). Another example of potential Am enrichment is that when the rumen contents of fistulated cattle grazing on the Nevada Nuclear Test Site were leached with simulated gastric fluids,... 

A site Cor ihc plum was selected close 10 the banks of the Vaal River, which is South Africa s major source of water. 50 miles (80 kilometers) south of Johannesburg and on top of a vast coal field. Sasol acquired approximately 8000 acres (3200 hectares) for the plant and its township which was to have the name of Sasolhurg. The site was in the middle of an area where cattle grazing and com (maize) production wcic the only activities and Sasol had to create its own infrastructure from scratch. 

Smith DD, Black SC. 1975. Actinide concentrations in tissues from cattle grazing near the Rocky Flats Plant. Report ISS NERC-LV-539-36. 

Dinkel CA, Minyard JA, Ray DE. 1963. Effects of season of breeding on reproductive and weaning performance of beef cattle grazing on seleniferous range. J Anim Sci 22 1043-1045. 

Blincoe C, Bohman VR, Fountain EL. 1969. Fallout concentrations in cattle grazing highly contaminated range. Health Phys 17 559-564. 

The cattle grazing in the river flood plains is exposed to three sources of heavy metals in the diet the drinking (river) water, the herbage and the ingested soil particles. Contribution of drinking water is less than 1% of the total heavy metal intake. The contribution of the contaminated grass and soil particles, however, is quite significant for the daily intake of As, Cd,... 

Hill NS, Thompson FN, Dawe DL, Stuedemann JA. Antibody binding of circulating ergopeptine alkaloids in cattle grazing tall fescue. Am J Vet Res 55 419-424, 1994. 

Naphtodianthrones isolated from the genus Hypericum include hypericin (C3oHi6Og, 10,11 -dimethyl-1,3,4,6,8,13-hexahydroxynaphtodianthrone), pseudohypericin, Fig. (3), and isohypericin [2,3,9,10,22]. Those metabolites are powerful photosensitizers and they are believed to be responsible for hypericism, a photodermatosis which affects cattle grazing on Hypericum plants. 

Balbuena, O., and Mastandrea, O. (1992). Clinical symptoms of cattle grazing on Melilotus alba with high molybdenum concentration in central-Chaco area. Veterinaria-Argentina 89 612-15. 

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