부산대학교 도서관

Fibre is the most widespread natural polymer. It is essential for the plants, but it is also present in bacteria, fungi and even in animals. The fibre is one of the NSPs (non-starch polysaccharides), commonly called dietary fibre, which are difficulty digested by the poultry. Nevertheless, the optimization of diets takes into consideration the concentration of this element in the raw ingredients because the fibre content influences the energy concentration of the different feedstuffs. In terms of nutrition physiology, energy is the most important and the most expensive ingredient of poultry diets. The fibre-high ingredients are cheaper than the ingredients currently used for the manufacture of diets for poultry. Our study investigated the possibility of using high-fibre raw ingredients for pullet-layer diets as early as from the starter stage. The working hypothesis is that a pullet layer has to get used to highfibre diets, which are good for its performance as adult hen, starting from its early days. This will also increase its ingesting capacity because the high-fibre diets are more voluminous. The study attempted to accustom Lohmann Brown pullet-layer from their growing period with high-fibre diets which included: DDGS, rice bran, wheat bran and sunflower meal. The feeding regimen included three stages: stage 1 (1-3 weeks) 21% CP, 3050 kcal ME and 4% fibre; stage 2 (4-8 weeks) 18.5% CP, 2950 kcal ME and 5% fibre; stage 3 (9-16 weeks) 16,5% CP, 2800 kcal ME and 4% fibre. Cellulozolytic enzymes were used to enhance fibre digestibility, and a mycotoxin inhibitor was used just in case. The results showed that the early feeding of different levels of fibre didn't affect the growth performance of the pullets during the period from 1-16 weeks. The pullets-layers displayed a good adaptability to this kind of diets as shown by a good feed conversion ratio, a body weight comparable to the producer's guidelines and a perfect health state. [ABSTRACT FROM AUTHOR]