Effects of Different Levels of Date Waste Vinegar in Diet and Water on Growth Performance, Gastrointestinal Tract Morphology, Ileal Microflora and Immune Response of Broilers
Article Type:
Research/Original Article (دارای رتبه معتبر)

To investigate the effects of dietary supplementation with industrial vinegar (IV) and waste date vinegar (WDV) on growth performance, intestinal morphology, and immune response of broilers, five hundred Ross 308 chickens were randomly divided into 50 cages in a 42-day breeding period. The experiment consisted of ten treatments with five replications in each treatment including; control 1 (standard feed without  WDV or IV), control 2 (control 1 + 2% water into the feed), 1, 2, and 3% of WDV and 2% industrial vinegar (IV) into the feed and 0.5, 1, and 1.5% of WDV and 1% industrial vinegar (IV) into the water. One chicken from each replicate was slaughtered on days 24 and 42 to investigate gastrointestinal tissue growth as well as intestinal morphology. The results showed that growth performance was not affected by treatments in any period. The height and width of the villus in the treatments containing 1% of WDV into the water and 2% of WDV into the feed increased with time compared to the control treatments. On day 42 of the experiment, the crypt depth was also higher in the treatment containing 1% of WDV into the feed compared to the other treatments. The ileal coliforms were also affected by WDV addition into the feed at 42 days of age compared to other groups (P < 0.05). The highest amount of IgM and IgG were found to levels of 2% and 1% of WDV into the diet, respectively (P < 0.05). However, SRBC, ND titter was not affected by treatments. Also, no difference was found between industrial vinegar in water or feed in most of the studied parameters. The results of this study showed that supplementation of the diet with WDV had a positive effect on intestinal morphology and immune system of broilers compared to industrial vinegar.

Poultry Science Journal, Volume:8 Issue: 2, Summer Autumn 2020
247 to 255
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