Iodine Concentrations in Milk from Iodophor Teat Dips

Abstract

Forty Holstein and Jersey cattle were assigned to four groups by milk production of Dairy Herd Improvement Association records. Cattle were on pasture and free-choice roughage supplemented with a concentrate and mineral mixture that was mixed without iodine supplementation. Teats of cows in each group were dipped for 27 days with chlorhexidine (controls) or iodophor teat dips with 1, .25, or .1% concentrations of iodine. Individual milk samples were taken on days 0, 20, and 27 for determination of iodine in milk. Mean iodine remained fairly constant, although there was a transitory increase for 1 and .25% dips at day 20. Mean iodine in milk (microgram/liter) for days 0, 20, and 27 were control: 31.3, 19.8, 14.7; 1.0%: 21.8, 51.5, 23.7; .25%: 34.5, 46.9, 36.7; .1%: 13.6, 14.5, 14.9. Iodophor teat dips did not add appreciable amounts of iodine to the bulk milk.

Scientific Opinion on the safety and efficacy of iodine compounds (E2) as feed additives for all animal species: calcium iodate anhydrous, based on a dossier submitted by Calibre Europe SPRL/BVBA

“…Increase of iodine in milk (µg/L) Galton et al (1986) 1 A 35 Ryssen et al (1985) 2 A 11-60 Berg and Padgitt (1985) 2.5 A 7 Rasmussen et al (1991) 2.5 A 54 Rasmussen et al (1991) 2.5 B/A 69 Falkenberg et al (2002) 2.7 B 30 3 A 54 Rasmussen et al (1991) 5 A 20 Borucki 5 B (complete cleaning) 25 Galton (2004) 5 A 27-32 Galton et al (1984) 5 A 36 Rasmussen et al (1991) 5 B/A 41 Borucki 5 B (incomplete cleaning) 88 Hamann and Heeschen (1982) 5 A 120 Berg and Padgitt (1985) 10 A 7 Swanson et al (1990) 10 A 46 Galton et al (1984) 10 A 90 Galton et al (1986) 10 A 76 Galton et al (1984) 10 B,A 150 Galton et al (1986) 10 B,A 110 Conrad and Hemken (1978) 10 A 88 Borucki 10 A 49 Borucki 10 A (spraying) 409 Borucki 10 B (complete cleaning) 54 1: A: after milking; B: before milking Table D4: Iodine concentration (µg/kg fresh weight) of salt-and fresh water fish, crustaceans and molluscs (-Food Composition and Nutrition Tables‖, ). Increase of iodine in milk (µg/L) Galton et al (1986) 1 A 35 Ryssen et al (1985) 2 A 11-60 Berg and Padgitt (1985) 2.5 A 7 Rasmussen et al (1991) 2.5 A 54 Rasmussen et al (1991) 2.5 B/A 69 Falkenberg et al (2002) 2.7 B 30 3 A 54 Rasmussen et al (1991) 5 A 20 Borucki 5 B (complete cleaning) 25 Galton (2004) 5 A 27-32 Galton et al (1984) 5 A 36 Rasmussen et al (1991) 5 B/A 41 Borucki 5 B (incomplete cleaning) 88 Hamann and Heeschen (1982) 5 A 120 Berg and Padgitt (1985) 10 A 7 Swanson et al (1990) 10 A 46 Galton et al (1984) 10 A 90 Galton et al (1986) 10 A 76 Galton et al (1984) 10 B,A 150 …”

Wpływ jodowanych lizawek solnych i dippingu strzyków na zawartość jodu w mleku i osoczu/osoczu krwi krów

“…The use of teat dips containing 3 g I/kg [23] and 4 g I/kg [24] caused milk iodine content to increase from 33 to 54 μg/1000 mL milk. Iodine dipping has received a great deal of attention in the past, especially in American and German studies [19,23,39,40]. In an earlier study, iodine teat dipping increased the cow's milk iodine content by 80-100 μg/1000 L (Conrad and Hemken, 1978) [22].…”

“…Iodine applied to the udder surface and teat channel orifice is absorbed into the blood through skin integuments and can increase the iodine content of milk. The available information on this subject is inconsistent and covers a long period of time [18][19][20][21][22][23][24]. It was assumed that giving cows iodine-fortified salt licks as well as teat dipping with iodine would increase milk iodine content.…”

Scientific Opinion on the safety and efficacy of iodine compounds (E2) as feed additives for all species: calcium iodate anhydrous and potassium iodide, based on a dossier submitted by HELM AG

“…Berg and Padgitt (1985) 10 A 7 Swanson et al (1990) 10 A 46 Galton et al (1984) 10 A 90 Galton et al (1986) 10 A 76 Galton et al (1984) 10 B/A 150 Galton et al (1986) 10 B/A 110 Conrad and Hemken (1978) 10 A 88 Borucki 10 A 49 Borucki 10 A (spraying) 409 Borucki 10 B (complete cleaning) 54 1: A: after milking; B: before milking …”