Dietary organic selenium improves growth, survival and resistance to vibrio mimicus in cultured marron, cherax cainii (Austin, 2002)
MetadataShow full item record
NOTICE: This is the author’s version of a work that was accepted for publication in Fish and Shellfish Immunology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Fish and Shellfish Immunology, Vol. 32 (2013). doi: 10.1016/j.fsi.2013.04.011
To determine the effects of dietary organic selenium (OS) supplementation on the growth performance and immune competence of marron, Cherax cainii (Austin, 2002), a group of marron were fed 0.2 g kg−1 of Sel-Plex® supplemented basal diet and then compared with another group (control) of marron fed basal diet without any supplementation. After 90 days of feeding, final weight, average weekly gains (AWG), relative gain rate (RGR), specific growth rate (SGR), survival, total and differential haemocyte counts (THC and DHC), were compared between the two groups. Surviving marron from each group were then divided into three sub-groups (three tanks per sub-group with seven marron per tank); (1) first sub-group was injected with 20 μL of 3.24 × 106 cfu Vibrio mimicus; (2) the second sub-group was injected with 20 μL normal saline and (3) the third sub-group was not subjected to injection and became the control group. THC, DHC, neutral red retention time (NRRT) and Vibrio ranks of post-injected marron were evaluated for 96 h, at every 24-h interval.The results showed that after 90 days of feeding, final weight, AWG, RGR, SGR, survival, THC, proportion of hyaline cells of OS-fed marron were significantly higher (P<0.05) than the control group, whereas proportion of granular and semigranular cells were not affected by dietary OS. After challenging with V. mimicus, survival rate of marron without dietary OS significantly decreased (P<0.05) as compared to the control group of marron. THC of marron in all sub-groups were significantly reduced (P<0.05) after the challenge. However, THC and granular cells of sub-groups fed OS were higher than other sub-groups. Vibrio ranks and NRRT of marron fed OS were significantly lower and slower, respectively, than marron fed without OS. These findings demonstrated the benefits of OS inclusion in the marron diet in terms of growth, health and disease resistance.
Showing items related by title, author, creator and subject.
The effects of dietary organic selenium supplementation on physiological status of cultured marron, Cherax cainii (Austin, 2002)Nugroho, Rudy Agung (2014)Six 90-day feeding experiments including outdoor commercial marron ponds trial were designed and conducted to investigate the effects of dietary Sel-Plex® as a source of organic selenium (OS) supplementation in marron, ...
Immunological responses of customised probiotics-fed marron, Cherax tenuimanus, (Smith 1912) when challenged with Vibrio mimicusAmbas, I.; Suriawan, A.; Fotedar, Ravi (2013)A two-phased experiment was conducted to investigate the effects of dietary supplementation of customised probiotics on marron physiology. During the first phase marron were fed probiotic supplemented feed for 70 days, ...
Dietary supplementation of mannan oligosaccharide improves the immune responses and survival of marron, Cherax tenuimanus (Smith, 1912) when challenged with different stressorsSang, Huynh; Ky, Le; Fotedar, Ravi (2009)Three trials were conducted to determine the effects of mannan oligosaccharide (Bio-Mos) on the immune responses of marron. In the first trial marron were challenged with Vibrio mimicus infection, in the second with NH3 ...