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ICV
ORIGINAL PAPER
 
CC-BY 4.0
 
 

The effect of graded levels of dietary threonine on nitrogen retention and structure of the small intestine in young pigs

E. Święch 1  ,  
M. Boryczka 1,  
M. Taciak 1,  
 
1
The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, 05-110 Jabłonna, Poland
J. Anim. Feed Sci. 2011;20(3):350–360
Publish date: 2011-08-09
KEYWORDS
ABSTRACT
The effects of four levels of dietary threonine (Thr) on growth performance, N retention and structure of the small intestine were studied in pigs from 13 to 22 kg of body weight (BW). Four diets were formulated to contain 6.46, 7.43, 8.37 and 9.32 g Thr. Each diet was fed to six pigs for 19 days and N balance was determined at 15 kg BW. Tissue samples of the small intestine were taken for histological and histochemical measurements. In pigs fed Thr-deficient diet, N retention (g per day) was lower than on diets containing 7.43 and 9.32 g Thr per kg. Tunica mucosa thickness and number of goblet cells (in villi and/or in crypts) containing neutral mucins were smaller on Thr-deficient diet than on other diets. It can be assumed that the level of dietary Thr amounting about 7.4 g per kg covers the requirement of piglets from 10 to 25 kg for rapid growth and maximal N retention as well as for supporting gut barrier function.
CORRESPONDING AUTHOR
E. Święch   
The Kielanowski Institute of Animal Physiology and Nutrition, Polish Academy of Sciences, 05-110 Jabłonna, Poland
 
CITATIONS (3):
1. Threonine requirement of White Pekin ducks from hatch to 21 d of age
M. Xie, L. Zhang, Z.G. Wen, J. Tang, W. Huang, S.S. Hou
British Poultry Science
2. Gut morphology of young pigs fed diets differing in standardized ileal digestible threonine and wheat gluten used as a source of non-essential amino acids
E. Święch, M. Barszcz, A. Tuśnio, M. Taciak
Journal of Animal and Feed Sciences
3. Comparative studies of versatile extracellular proteolytic activities of lactic acid bacteria and their potential for extracellular amino acid productions as feed supplements
Ye Heng Lim, Hooi Ling Foo, Teck Chwen Loh, Rosfarizan Mohamad, Norhani Abdullah
Journal of Animal Science and Biotechnology
ISSN:1230-1388