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Transfer of aflatoxin B1 from feed to milk and from milk to curd and whey in dairy sheep fed artificially contaminated concentrates

Battacone, Gianni and Nudda, Anna and Palomba, Michele Francesco Luigi and Pascale, Michelangelo and Nicolussi, Paola and Pulina, Giuseppe (2005) Transfer of aflatoxin B1 from feed to milk and from milk to curd and whey in dairy sheep fed artificially contaminated concentrates. Journal of Dairy Science, Vol. 88 (9), p. 3063-3069. eISSN 1525-3198. Article.

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Abstract

An experiment was carried out using dairy ewes to study the transfer of aflatoxin B1 (AFB1) from feed to milk and from milk to cheese. The effects of AFB1 on liver function and hematological parameters were also investigated. Fifteen ewes were assigned to treatments in replicated 3 × 3 Latin squares. The experimental groups received 32, 64, or 128 µg/d of pure AFB1 for 7 d followed by 5 d of clearance. On the sixth day of the first period, the total daily milk produced by each ewe was collected separately and processed into cheese. The results indicate that the level of AFB1 used did not adversely affect animal health and milk production traits. The aflatoxin M1 (AFM1) concentrations in milk approached a steady-state condition in all treated groups between 2 and 7 d after the start of treatment. The mean AFM1 concentrations of treated groups in steady-state condition (184.4, 324.7, and 596.9 ng/kg in ewes fed 32, 64, or 128 µg of AFB1, respectively) were significantly affected by the AFB1 doses. The AFM1 concentration was linearly related to the AFB1 intake/ kg of BW. The carry-over values of AFB1 from feed into AFM1 in milk (0.26 to 0.33%) were not influenced by the AFB1 doses. The AFM1 concentrations in curd and whey were linearly related to the AFM1 concentrations in the unprocessed milk.

Item Type:Article
ID Code:1020
Status:Published
Refereed:Yes
Uncontrolled Keywords:Aflatoxin, dairy sheep, carry-over, milk
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/19 Zootecnica speciale
Area 03 - Scienze chimiche > CHIM/08 Chimica farmaceutica
Divisions:001 Università di Sassari > 01 Dipartimenti > Scienze zootecniche
002 Altri enti e centri di ricerca del Nord Sardegna > Istituto zooprofilattico sperimentale della Sardegna, Sassari
001 Università di Sassari > 01 Dipartimenti > Farmaco, chimico, tossicologico
Publisher:American Dairy Science Association
eISSN:1525-3198
Deposited On:18 Aug 2009 10:04

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