Paper Title :Relationship between Feeding Type and The Occurrence of Aflatoxin M1 in Milk of High Yielding Dairy Cows

Author :G.S.Sumanasekara, W.M.P.B.Weerasinghe

Article Citation :G.S.Sumanasekara ,W.M.P.B.Weerasinghe , (2019 ) " Relationship between Feeding Type and The Occurrence of Aflatoxin M1 in Milk of High Yielding Dairy Cows " , International Journal of Advances in Science, Engineering and Technology(IJASEAT) , pp. 25-28, Volume-7,Issue-2, Special. Iss-2

Abstract : The major problem associated with concentrate feeds used for feeding cattle is declining quality by contamination with Aflatoxins. Objective: The aim of the study was to detect levels of Aflatoxin M1(AFM1) in cow milk , AFM1 levels present in milk related to different feed types and to identify the relationship between feed type and Aflatoxin M1 in milk. Design: Cross sectional study design. Milk samples from each farm assessed for presence of AFM1 using High Performance Liquid Chromatographic method. Setting: Ten dairy farms located in Nuwara-Eliya district were randomly selected.AFM1 analysis was done using High Performance Liquid Chromatography(HPLC). Results: The results indicated that AFM1 was present in 50% of samples. Coconut poonac shown the most significant relationship among individual feeds having a correlation of 0.65 and P value of 0.042 . Among feed combinations, coconut poonac and beer pulp combination showed the highest correlation of 0.77 and P value of 0.05. Grasses had shown a very poor relationship with the AFM1 occurrence in milk (r=0.053, P=0.885). Relationship between overall concentrate feeds in the study and AFM1 in milk, it was clear that they had a significant relationship having correlation of 0.65 and P value of 0.042. Majority of samples lied between 0-10 ng L-1 of AFM1 and one sample exceeded above 30 ng L-1. Two samples had AFM1 concentrations between 22-32 ng L-1. One sample lied between 32-42ng L-1 , did not exceed the EU recommended level of 50 ng L-1. The presence of AFM1 in milk under various management and feeding conditions is yet to be investigated in Sri Lanka. Keywords - Aflatoxin M1, Feed, Cow Milk.

Type : Research paper

Published : Volume-7,Issue-2, Special. Iss-2

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