Castor bean cake detoxified with calcium hydroxide in diets for pigs at growing and finishing phases

Abstract

The present study was aimed to evaluate the use of increasing levels of castor bean cake detoxified with calcium hydroxide in diets for pigs at growing and finishing phases on performance, diet digestibility, weight of digestive organs, carcass traits, and economic evaluation. A total of 40 barrows with 44.59 ± 5.16 kg initial weight were fed diets with 0%, 7%, 14%, and 21% detoxified castor bean cake. Increasing levels of detoxified castor bean cake in diets resulted in linear worsening in the average daily gain of the pigs. Dry matter, crude protein, and gross energy digestibilities were adversely affected by the levels of detoxified castor bean cake. A linear decrease in loin eye area and ham yield was detected depending on detoxified castor bean cake inclusion levels. Although the detoxified castor bean cake had no effect on the assessed economic variables, its use in diets for growing and finishing pigs is not recommended.

A Case Study of Energy Balance of Castor Bean Cultivation in Iran

“…However, in a similar study conducted in the city of Varamin (Tehran, Iran), the energy efficiency was calculated to be 144.66 counting the produced biomass, and 3.81 for the produced seeds only [28]. In the research carried out in Brazil, the energy productivity was reported to be 117 0.02 and 0.14 kg.MJ -1 in traditional and mechanized farming systems respectively [17].…”

“…After the oil processes, the biomasic waste is used in different recovery processes to obtain energy, biodiesel, animal food, compost, paper, water retenders, etc. [16][17][18]. The seeds of Ricinus communis, which contain ricin, a water-soluble toxin, have limited uses for humans and animals [19].…”