Evaluation of Age and Dietary Ingredients on Nutrient Utilization in the Young Chick

Experiments then were conducted to evaluate utilization of various carbohydrate sources and several different soy products varying in antinutritional factors and heat processing at different ages. Dietary MEn varied greatly among carbohydrate sources and increased with age for several sources, and sucrose was not utilized as well as dextrose by the young chick. Growth performance results also indicated that dextrinized starches may be utilized better than gelatinized starches by the young chick. Dietary MEn and AA digestibility also varied with age and among different soy products, with soy protein isolate and soy protein concentrate yielding the highest values and severely under heated soybeans having very low AA digestibility values. The MEn and AA digestibilities of soybeans were improved by genetically removing both the Kunitz trypsin inhibitor and the lectins. Our last study indicated that feeding Oasis(TM) hatching supplement (compared to fasting) immediately after hatching had a beneficial effect on growth performance and subsequent energy utilization of a corn-soybean meal diet and that Oasis(TM) may be stimulating early gut development. Our results suggest some potential benefits of feeding dextrose, dextrinized starches, waxy-corn, high-oil corn, soy protein isolate, soy protein concentrate, and Oasis(TM) during the first 1 to 3 weeks posthatching. The results also suggest that severely underprocessed (underheated) soybeans should not be included in the diet of the very young chick.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Animal Sciences

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2015

Author dc:creator

• Batal, Amy Beth

Contributors dc:contributor

• Parsons, Carl M.

• Agriculture, Animal Culture and Nutrition

Language dc:language

eng

Identifier

(MiAaPQ)AAI3030409

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/83537