Iranian Journal of Fisheries Sciences
مجله علوم شیلاتی ایران
IJFS
Agriculture
http://jifro.ir
1
admin
1562-2916
10.18869/acadpub.ijfs
en
jalali
1396
1
1
gregorian
2017
4
1
16
2
online
1
fulltext
fa
The comparative effects of dietary supplementation with Pediococcus acidilactici and Enterococcus faecium on feed utilization, various health-related characteristics and yersiniosis in rainbow trout (Oncorhynchus mykiss
Walbaum, 1792)
<p style="margin-right:1.4pt;text-align:justify;line-height:110%;direction:ltr;unicode-bidi:embed;"><span style="letter-spacing:0pt;"><span style="color:windowtext;"><span style="font-family:times new roman,serif;">This study examined the effects of feeding of two dietary probiotics on growth performance and feed utilization, intestinal colonization and related health criteria, biochemical parameters, hematological indices, and immune parameters and protection against </span></span></span><span style="letter-spacing:0pt;"><span style="color:windowtext;"><span style="font-family:times new roman,serif;">Yersinia ruckeri</span></span></span><span style="letter-spacing:0pt;"><span style="color:windowtext;"><span style="font-family:times new roman,serif;"> in </span></span></span><span style="letter-spacing:0pt;"><span style="color:windowtext;"><span style="font-family:times new roman,serif;">Oncorhynchus mykiss</span></span></span><span style="letter-spacing:0pt;"><span style="color:windowtext;"><span style="font-family:times new roman,serif;"> during a period of 56 days. The study included 3 groups:1(a control group of fish, 2) a group of fish fed with a basal commercial diet supplemented with 2 × 10<sup>6</sup> CFU g<sup>-1</sup> </span></span></span><span style="letter-spacing:0pt;"><span style="color:windowtext;"><span style="font-family:times new roman,serif;">Pediococcus acidilactici</span></span></span><span style="letter-spacing:0pt;"><span style="color:windowtext;"><span style="font-family:times new roman,serif;"> (PA-group and 3) a group of fish fed with a basal commercial diet supplemented with 2.5 × 10<sup>8</sup> CFU g<sup>–1</sup> </span></span></span><span style="letter-spacing:0pt;"><span style="color:windowtext;"><span style="font-family:times new roman,serif;">Enterococcus faecium</span></span></span><span style="letter-spacing:0pt;"><span style="color:windowtext;"><span style="font-family:times new roman,serif;"> strain IR5 (EF-group). Each group was run in triplicate. The PA-group and EF-group showed significant improvement with respect to WG, SGR, FCR, PER, lactic acid bacteria (LAB) (%) in intestinal, intestinal colonization (log CFU g–<sup>1</sup>), survival (%), RBCs, WBCs, hematocrit percentage (Hct %), and respiratory burst activity (RBA) levels, each of which was significantly higher than that in the control group (</span></span></span><span style="letter-spacing:0pt;"><span style="color:windowtext;"><span style="font-family:times new roman,serif;">p</span></span></span><span style="letter-spacing:0pt;"><span style="color:windowtext;"><span style="font-family:times new roman,serif;"><0.05). </span></span></span><span style="letter-spacing:0pt;"><span style="color:windowtext;"><span style="font-family:times new roman,serif;">The</span></span></span><span style="letter-spacing:0pt;"><span style="color:windowtext;"><span style="font-family:times new roman,serif;"> WG and PER in the EF-group were significantly higher than that in the PA and control groups (</span></span></span><span style="letter-spacing:0pt;"><span style="color:windowtext;"><span style="font-family:times new roman,serif;">p</span></span></span><span style="letter-spacing:0pt;"><span style="color:windowtext;"><span style="font-family:times new roman,serif;"><0.05). Levels of immune-system response across a variety of measures, some of the measured hematological indices, LAB (%) in intestines, and </span></span></span><span style="letter-spacing:0pt;"><span style="color:windowtext;"><span style="font-family:times new roman,serif;">survival rate (%) were higher in the PA group than that in the EF group on 56th days of feeding</span></span></span><span style="letter-spacing:0pt;"><span style="color:windowtext;"><span style="font-family:times new roman,serif;">. Mortality in the PA group (20%) and EF group (33.3%) were significantly lower compared with that in the positive control (73.3%) during the 10 days following exposure to </span></span></span><span style="letter-spacing:0pt;"><span style="color:windowtext;"><span style="font-family:times new roman,serif;">Y. ruckeri</span></span></span><span style="letter-spacing:0pt;"><span style="color:windowtext;"><span style="font-family:times new roman,serif;"> (</span></span></span><span style="letter-spacing:0pt;"><span style="color:windowtext;"><span style="font-family:times new roman,serif;">p</span></span></span><span style="letter-spacing:0pt;"><span style="color:windowtext;"><span style="font-family:times new roman,serif;"><0.05).</span></span></span></p>
Rainbow trout, Probiotic, Growth performance, Hemato-immunological parameters, Yersinia ruckeri
753
773
http://jifro.ir/browse.php?a_code=A-10-23-11&slc_lang=fa&sid=1
A.
Abedian Amiri
100319475328460021751
100319475328460021751
No
Gh.
Azari Takami
takami85@hotmail.com
100319475328460021752
100319475328460021752
Yes
M.
Afsharnasab
100319475328460021753
100319475328460021753
No
V.
Razavilar
100319475328460021754
100319475328460021754
No