DD152051A1 - METHOD OF REDUCING THE EMERGENCY EFFECT OF RAPSE EXTRACTION SCRAP - Google Patents

Abstract

With the invention, the feed value and the possibilities of using rapeseed meal, a protein substitute valuable from the amino acid composition, should be substantially improved in the feeding of agricultural animals. By treating rapeseed meal with dilute formaldehyde solutions in conjunction with calcium hydroxide, the physiologically negative effect in pollutants contained in it is greatly reduced. Furthermore, other positive effects are to be expected. The invention should preferably be used in animal production plants or special feed processing plants.

Description

Method for reducing the pollutant effect of rapeseed meal

Field of application of the invention

The invention relates to a method for reducing the pollutant effect of rapeseed extraction meal. The use of the invention in the processing of rapeseed meal for feeding to agricultural grouse animals is improved. the feed value and the? Purpose of the feed, * The invention is preferably used in animal production systems directly bz? / _E adopted by special feed processing plants.

Characteristic of the known technical solutions

Rapeseed mustard oil is due to its amino acid contents; a valuable feed for the diet of farmed grouse animals «. However, pollutants contained therein, predominantly glucosinolates, negatively affect animal performance and health status when feeding untreated rapeseed meal. "The following solutions are known for the elimination or reduction of the effects of these pollutants"

-Extraction of the glucosinolates with or without: previous hydrolysis (e.g., DD-PS 102574, DD-PS 113992, DD-PS 127952)

-Fermentative destruction or * inactivation of pollutants

(e.g., DE-AS 2111871, Food £ 6, 843-848, 1: 972)

Mixed blending of rapeseed meal with potatoes or corn (food 1_6, 843-848, 1972; food 17, 147-152, 1: 973)

Release of spontaneous fermentation in rapeseed meal (DD-PS 137245)

Inactivation of the enzyme myrosinase (e.g., SE-AS 257658, U.S. Patent 3574640)

Heat treatment for volatilization or "in the presence of heavy metal salts to decompose the pollutants" (EL-IS 75252, US-PS 3106469, US-PS 3560217)

The disadvantage for the extraction process as well as the fermentative destruction bsw _e inactivation of pollutants are nutrients' losses and high process costs by an expensive technology "Such methods have so far only for the recovery of protein! Solaten obtained for human consumption a meaning.

The mixed silage of rapeseed meal, with potatoes or maize and the sole ensilization of rapeseed meal lead to satisfactory results. At high rapeseed fractionation scrap fraction in the mixed silage is the rate of degradation, the glucosinolates too low. In sizing processes, the time required, the creation of technological conditions and the observance of the cooking conditions may adversely affect the practical application. Inactivation of the enzyme myrosinase does not diminish the harmful effects since the rapeseed myrosinase can be replaced by the myrosinase of the bacteria in the digestive tract of the animals.

In heat treatments even in the presence of heavy metal salts occur nutrient damage, especially in protein.

Aim of the invention

With the invention, the feed value and the usability of rapeseed meal in feeding farm animals should be substantially improved.

Explanation of the essence of the invention € | ψ ^ ||||

It is the object of the invention to provide a method by which the physiologically negative effects of the pollutants contained in the rapeseed meal can be significantly reduced.

In dilute formaldehyde solutions, with the addition of alkalis, in particular calcium hydroxide, reaction reactions of the formaldehyde itself and with other compounds take place. Since the pollutants contained in the rapeseed meal, especially G-lucosinolates, are water-soluble, it must be expected that they will be included in the reaction reactions and change their characteristic effect. "

According to the invention, such a reaction mixture, consisting of a strongly diluted formaldehyde solution, is mixed homogeneously with EaIciumhydroxid or · calcium oxide in rapeseed extraction meal. At the latest after 24 hours so treated rapeseed meal can be fed. Such treated rapeseed meal bread is much better eaten than untreated "Harmful effects of glucosinolates on animal performance were undetectable in experimental trials.

Compared to previously known methods, the following advantages are worth highlighting;

-The cost of the. Treatment agents are low. For treatment, no complex technology is required.

- Losses of feed energy due to nutrient losses (eg .Bo Extract! Onsverfahren) do not occur.

-All additives can remain in the feed "The " addition of! Calcium hydroxide even enables a reduction in the use of mineral mixtures in pig feed rations »

-The time required for the treatment is very short in comparison with the ensiling procedures «

Execution sbeispi el

The invention will be explained in more detail below using an embodiment v / earth »

In 100 liters of warmed up water (about 323 ⁰ K) 5 kg quicklime (CaO) are dissolved. Subsequently, 5 parts of foraldehyde solution (about 30 #ig) are mixed in. The solution thus obtained is homogeneously distributed in 200 kg of rapeseed meal by a mixer or manually.

In the interest of a homogeneous distribution of the reaction mixture, repeating the rapeseed extraction meal is advantageous "

The product thus obtained has a trookensubstanzgehalt of; about 60-65 ^ and, after the smell of formaldehyde has subsided, can be fed in this condition. The storage time of the rapeseed meal treated in this way should not be more than 5 days, otherwise an acidification can take place without drying or additional preservatives *

Tests with rapeseed extraction soot proportions of up to 25 % in pig feed rations showed that rapeseed meal thus treated was eaten well.

Claims (1)

Erfindungsansprucb Method of reducing the effect of pollutants, especially rapeseed meal, characterized in that rapeseed extraction rotot is treated with dilute formaldehyde solutions in combination with caustic hydroxide. "