Paper Information

Journal:   ANIMAL SCIENCE RESEARCHES (FACULTY OF AGRICULTURE, UNIVERSITY OF TABRIZ)   2015 , Volume 25 , Number 4; Page(s) 45 To 53.
 
Paper: 

IDENTIFICATION OF PROTEIN FRACTIONS, AMINO ACID PROFILE, AND IN VITRO DIGESTIBILITY OF THREE SAMPLES OF POULTRY BY-PRODUCT MEAL IN RUMINANT NUTRITION

 
 
Author(s):  KAZEMI BONCHENARI M., ALIZADEH A.R., JAVADI L., TAGHI NEJAD ROUDBANEH M.*
 
* DEPARTMENT OF ANIMAL SCIENCE, TABRIZ BRANCH, ISLAMIC AZAD UNIVERSITY, TABRIZ, IRAN
 
Abstract: 

BACKGROUND: poultry by-product meals are a excellent source of protein in diet because of their high protein content and sensible price. Although incorporating them in animal diets need to proper determination of their protein quality.
OBJECTIVES: In the present study amino acid profile, Cornell Net Carbohydrate and Protein system (CNCPS) fractioning of protein and in vitro digestibility of three poultry by-product meals (Makian (M), Iran-Teyhoo (IT) and Kooshan (K)) samples were determined and compared.
METHODS: In vitro digestbilities of DM and OM also were determined using three rumen-fistulated sheep. Protein contents of samples were 50.7, 55.5 and 62.6% for M, IT and K, respectively (P < 0.05). The CNCPS analysis showed that fractions A and B2 were similar in the samples studied, however, B1, B3 and C fractions differed among them. The K samples had the greatest B3 and C fractions among the samples.
RESULTS: Both IVDMD and IVOMD were differed for three samples of poultry by-product meals (P < 0.05). The amino acids arginine, cysteine, leucin, threonine and valine were differed among treatments, but histidine, isoleucin, lysine, methionin, phenylalanine and tryptophane were similar among them. The results indicate that there were considerable variations among the poultry by-product meals with regard to chemical composition, CNCPS protein fractions and amino acid profiles.
CONCLUSIONS: The results showed, chemical composition of poultry-by product meal has to determine before being included in animal rations.

 
Keyword(s): POULTRY BY-PRODUCT MEAL, AMINO ACID, CNCPS
 
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