Laxmi Puja And The Hidden Irony II

The quality of the feed has a direct effect on the quality of the market products like milk, meat, and eggs. Aflatoxinsparticularly AFB1 produced by toxigenic Aspergillus mold contaminate and cause food/feed safety concerns.

Oct. 26, 2019, 6:32 p.m.

Tihar time!

Laxmi Puja is celebrated by worshipping the cow on the third day of Tihar. The ox and the person who helps to plough the field (hali) are worshipped on the fourth day. On the final day, the sister worships the brother and wishes him a long life. We see that the birds and animals are worshipped, not merely remembered, for their contribution to the human society.


I want to make it clear in the beginning that I am not opposed to the ongoing tradition of worshipping the Laxmi or the cow. However, let us analyze what we really feed the animals/birds whose products we enjoy as nutritious protein food. For nutrition purposes, we raise the cows, other animalsor the poultry birds commercially too. Since open fields are not available anymore, commercial feeds are used to raise the birds/animals. The quality of the feed has direct effect on the quality of the market products like milk, meat and eggs. Aflatoxins particularly AFB1 produced by toxigenic Aspergillus moldcontaminate the dry feeds. AFB1 is the most potent known carcinogenic secondary metabolite that develops in improperly stored food/feed. AFB1 is metabolized and secreted into milk as AFM1, also a carcinogen, within about 12 hours of feeding.If a toxin free diet is fed for 3-4 days, the toxin cannot be detected in the milk.

Feeding cattle large doses of aflatoxins within a short period results in aflatoxin poisoning (aflatoxicosis). This will manifest as anemia, easy bruising, reproductive inefficiency, including abnormal estrous/ heat cycles (too short or too long) and abortions. Other symptoms include impaired immune response, increased susceptibility to other diseases and rectal prolapse.Long term exposure to aflatoxins results in symptoms of feed refusal, reduced growth rate, reduced milk production and decreased feed conversion efficiency. Weight loss, rough hair coat and mild diarrhea may occur.

Cattle being fed aflatoxin contaminated feeds secrete AFM1 in their milk long before the symptoms appaear. The shedding in urine and feces is insignificant. Cancer effect per sein livestock for meat purpose is not recognized and there is not much information regarding animals raised for milk purpose. Researchers have analyzed dairy and meat products and have pointed to the need to improve feed quality.

Is there any way out to minimize toxins in feeds?

This goes to the central issue of minimizing invisible toxins in the dry food system. We have argued earlier that moisture is the enemy of dry foods. We need to dry the harvested foods, especially maize, within 4-5 days to the processing moisture contents and package into water-proof containers. However, the traditional practice has been to harvest food crops, let them dry naturally either inside the house or in raised open structures like Suli or Thangro. Porous containers are then used to store foods like paddy making the moisture content of the stored foods to fluctuate according to the ambient environment. Thus, natural drying cannot easily dry food like maize and rice harvested during the rainy season to the processing moisture contents. Due to lack of awareness and lack of drying resources, the toxigenic molds proliferate in the storage. There are pre-harvest molds too which begin to disappear in the storage. Even at the moisture contents where these molds do not develop, the insects cause massive visible damage to the grains depriving the people from the nutrients. This moisture regimen for profuse insect activity is between 9-14%. However, pesticide-free airtight/hermetic packaging can control the insects and also minimize nutrient loss at the processing or the milling moisture regimen.When the growers cannot manage moisture content of their dry food/feed products, the quality deteriorates slowly. In other words, toxic mold and insects build up and nutrients decline. The decline in nutrients is not obvious to the growers. They prefer to use such poor quality product proudly as feeds to animals and birds. There is no awareness that the toxic product ends up in the dairy and animal products.

If we feed poor quality feed (laden with toxins) for 364 days and worship on Laxmi Puja day, this seems odd to me. Looks like we are making the animal sick by feeding toxic feed for 364 days and unknowingly inviting ill health to her as well. Dysentery is one of the visible symptoms of feeding aflatoxin infested feed.

So, my conscious does not allow me to celebrate Laxmi Puja until we improve feed/food quality. Please see how serious health problems are hovering around our head: liver cancer and malnutrition being prominent ones. A promise to start looking for quality food/feed could be a real worshipping point on Laxmi Puja day.

Dahal, PhD. Seed Scientist (Retired), UC Davis, CA, USA; Food, Nutrition and Health Sub-committee, Agri Promotion Committee/Agri Promotion Committee/NRNA; Asta-Ja RDC; NAPA; Sacramento Nepalese Lions Club

Dr. Peetamber Dahal.jpg

Dr Peetambar Dahal

Soil Scientist, University of California, Davis , USA

Laxmi Puja And The Hidden Irony
Oct 19, 2017

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