الفهرس 
review of literatureOnly 14 pages are availabe for public view
 |  | from | 273 |  |  |
| | | from | 273 | | |
Abstract
The reduction in local feedstuffs resources for livestock
is considered one of the main constrains for increasing and
developing animal production in Egypt. The annually
nutri tiona! gap between I ivestock demands and local
nutritional resources has been estimated to be 3.5 million
tons of total digestible nutrients (Abo Akkada & Nour 1985).
One of the available solutions for this problem is to use non
traditional feeding resources such as non-edible by- products
and wastes logs to be incorporated into the rations of
1 ivestock which are capable utilizing them as stuffs to
e edible meat, milk or others for human consumption. The
only 1 imitation is to obtain these stuffs as cheaper as
possible than the traditional one and not cause any health
hazard for the consumer. One of these non traditional feeds
is to add fat on the ration of ruminants. There are basically two reasons for the addition of fat to the diet of the
ruminants animal, first, to act as an energy source and,
second, to influence the composition of the final animal
products inparticular desired direction (Clapperton & Steel
1983b). Soya lecithine and sunflower soapstock are by products
of oil and soap manufacture. They are considered types of fat
sources and feeding fat for ruminants of interest for several reasons. One of these reasons is their high energy
density so that they can be used as energy sources to
substitute for a part of the grains in the diet (specially
yellow corn) and this can increase production during early
lactation when cows fail to consume sufficient energy and
offered a mean of producing animal products with a fatty
composition wich coincides with the consumer preference.
Morever, the other most important benefit for using these byproducts
is to reduce pollution and aid in solving one of the
animal production constraints without expensing the government
foreign currency.