Volume 9, Issue 22 (12-2018)                   rap 2018, 9(22): 1-8 | Back to browse issues page

XML Persian Abstract Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Saki A A, Malecky M, Atashi E, Mirzaie Goudarzi S, Zamani P, Hosseini Siyar S A. Determination of Optimum Level of Threonine in the Diet Laying Japanese Quail of During 10-17 Weeks of Age. rap. 2018; 9 (22) :1-8
URL: http://rap.sanru.ac.ir/article-1-781-en.html
Bu-Ali Sina University
Abstract:   (329 Views)
This experiment was conducted to determine in the threonine requirements laying japanese quail. A total of 240 female Japanese quails were used from 10 to 17 weeks of age, in a completely randomized design (CRD). Experimental treatments consisted of three treatments: basal diet (0.69% threonine), basal diet+0.05% L- threonine (0.74% threonine) and basal diet+0.1% L- threonine (0.79% threonine), with 4 replicates and 20 quails in each. Feed intake, egg production, egg mass, feed conversion ratio and body growth rate were recorded during this study. Egg quality traits were measured biweekly. Performance parameters were not affected by supplementation L- threonine. Quail requirement for threonize was evaluated using, linear regression and quadratic equation. The lowest feed intake and the highest thin albumen of height showed by 0.74% dietary threonine with a quadratic trend. Albumen height, albumen index, yolk color and Haugh unit were decreased linearly by increasing threonine levels. Based on these results, it is concluded that the 0.69% threonine level in the diet was enough to achieve the potential of egg performance in of laying Japanese Quail.
Full-Text [PDF 1266 kb]   (171 Downloads)    
Type of Study: Research | Subject: تغذیه طیور
Received: 2017/08/10 | Revised: 2019/01/26 | Accepted: 2018/09/30 | Published: 2019/01/26

Add your comments about this article : Your username or Email:

Send email to the article author

© 2019 All Rights Reserved | Research On Animal Production(Scientific and Research)

Designed & Developed by : Yektaweb