Abstract
This study aimed to determine the in vitro degradability of dry matter and the total gas production of oil seed press cake from biodiesel production (Gossypium hirsutum L., Helianthus annuus L., Ricinus communis, Moringa oleifera L. and Pinhao manso curcas L.) at four different levels of replacement (0, 30, 50, and 70%) for cane sugar (Saccharum officinarum RB.) in ruminant feed. Inocula were prepared using the ruminal fluid of three Holstein cows, and data were collected after 48 hours of incubation. The byproducts of Moringa had the highest degradability, and castor presented the lowest values at all evaluated levels of replacement. Castor bean byproduct showed the highest total gas production, cotton showed the lowest production, and the byproduct of Moringa at the 70% level showed the best ruminal fermentation results. These results demonstrate that the use of oil seed press cake from biodiesel production (Helianthus annuus L. and Ricinus communis) can replace cane sugar in ruminant feed.
Highlights
The growth of farm cattle for meat and milk production has led to increased research on animal nutrition using alternative foods because the forages that comprise the main ingredients in ruminant feed may not meet the growing demand
The study of byproducts from biodiesel production as an alternative for animal feed allows for an increased nutritional value of the diet at a low cost and increases the competitiveness of the supply chain by reducing prices
When using agricultural industry byproducts as alternative food, it is necessary to evaluate these materials with respect to the performance and health of the animals (AZEVEDO et al, 2013)
Summary
The growth of farm cattle for meat and milk production has led to increased research on animal nutrition using alternative foods because the forages that comprise the main ingredients in ruminant feed may not meet the growing demand. The study of byproducts from biodiesel production as an alternative for animal feed allows for an increased nutritional value of the diet at a low cost and increases the competitiveness of the supply chain by reducing prices. In Brazil, a large amount of agricultural byproducts are produced, and agribusiness products with potential use in animal. When using agricultural industry byproducts as alternative food, it is necessary to evaluate these materials with respect to the performance and health of the animals (AZEVEDO et al, 2013). The proper use of the byproducts further enables the production chain of biodiesel, it is necessary to obtain knowledge of certain factors such as the storage and the need for treatments to improve their nutritional value, thereby reducing the deleterious effects towards
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