Cottonseed: The 'recipe' for cows and its nutritional power

Whole cottonseed is primarily used as feed for high-production dairy cows, offering significant nutritional value.

The primary toxic substances found in cottonseed are gossypol and cyclopropenoid fatty acids. Gossypol is present in the yellow pigments of the seed, with higher concentrations in whole seeds compared to cottonseed meal, which has lower levels after oil extraction. Consuming high proportions of gossypol can cause serious health issues, particularly in young pigs, poultry, and calves aged 4 to 6 months, if levels exceed 1%.

For weaned calves weighing over 150 kg, the maximum tolerable level of free gossypol is 100 ppm, and 200 ppm for older calves. Another concern is the seed's hygroscopic nature, making it susceptible to absorbing moisture. This can lead to the easy development of fungal toxins like aflatoxin. Therefore, the maximum moisture content should not exceed 11%.

Key nutritional components of cottonseed include protein, fiber, and essential minerals such as calcium, phosphorus, and potassium, along with vitamins B and E. Cottonseed meal, derived from crushed and ground seeds after fiber and oil extraction, is particularly rich in protein, typically ranging from 41% to 45%, and also contains about 40% fiber.

When feeding whole cottonseed to dairy cows, the maximum daily intake should not exceed 3 to 4 kilograms per animal due to its high fat content. Acceptance may initially be low, so a gradual introduction period of about a week or mixing it with green forage or silage is recommended.

Understanding the properties of cottonseed and its byproducts is essential for improving meat and milk production, reducing costs, and preventing future health problems in livestock.