JEB logo

Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP

About Journal
    Home
    Obituary: Dr. R. C. Dalela
    Editorial Board
    Reviewer Panel
    Publication Policies
    Guidelines for Editors
    Guidelines for Reviewers
    Abstracting and Indexing
    Subscription and Payments
    Contact Journal
    About Triveni Enterprises
 
Read Journal
    Current Issue
    Journal Archives
 
For Authors
    Guidelines for Authors
    Terms and Conditions
    Fees and Payments
    Track Paper Status
 

Google Search the Journal web-site:


    Abstract - Issue Mar 2020, 41 (2)                                     Back


nstantaneous and historical temperature effects on a-pinene

Effect of dietary metabolic energy on growth performance, blood homeostasis in ducks under heat stress-related climate change

 

J. S. Shin, K.H. Um and B.S. Park* 

College of Animal Life Science, Kangwon National University, Chuncheon, Gangwondo-24289, South Korea

*Corresponding Author Email : bspark@kangwon.ac.kr

Paper received: 14.08.2019??????? ?????????????????????????????????????? Revised received: 31.12.2019????????????? ???????????????? Accepted: 08.01.2020

 

Abstract

Aim: This study was carried out to investigate the effect of dietary metabolic energy on growth performance, homeostasis of blood biochemical parameters, immunoglobulin G (IgG), and corticosterone in meat duck exposed to heat stress.

Methodology: A total of 320 meat ducks (Cherry valley, Anas platyrhynchos) were randomly allotted into five groups. In all experimental treatment groups, dietary crude protein content was fixed at 18%. metabolic energy level for the control group (thermononeutral temperature, 26?C) was set at 3000 kcal kg-1, while metabolic energy levels for heat stress groups were set at 2900, 3000, 3100 or 3200 kcal kg-1. Heat stress conditions were artificially induced at 36?C with relative humidity of 70% once daily (from 11:00 to 16:00 hr) during finisher periods (day 22 to 42).?????

Results: Compared to control group, heat stress groups with different metabolic energy showed significant decrease in body weight gain, feed intake, red blood cell, and platelets. Heat stress groups with different metabolic energies showed significant increase in feed conversion ratio, blood lipid profiles, aspartate aminotransferase, alanine transferase, electrolytes, pH, gas concentration, immunoglobulin G, and corticosterone compared to the control group.Among heat stress groups, red blood cells and platelets were significantly higher in the heat stress group with metabolic energy of 3000 compared to those in other groups. Blood IgG and corticosterone levels were significantly lower in 2900 and 3000 groups than those in heat stress groups with metabolic energy of 3100 and 3200.??????

Interpretation: The results of this study suggest that dietary metabolic energy 3000 kcal kg-1 level can improve the growth performance of meat duck exposed to heat stress by modulating homeostasis of blood biochemical parameters.??

Key words: Blood homeostasis, Corticosterone, Ducks, Growth performance, Heat stress, Immunoglobulin G

 

 

 

Copyright ? 2020 Triveni Enterprises. All rights reserved. No part of the Journal can be reproduced in any form without prior permission. Responsibility regarding the authenticity of the data, and the acceptability of the conclusions enforced or derived, rest completely with the author(s).