Mohammad Hossein nemati; Mustafa Hajilou; sayed abdoullah hosseini; seyyed saeid mousavi
Volume 23, Issue 4 , January 2022, , Pages 549-559
Abstract
In this research the effect of Bioplus B2 probiotic and galactooligosaccharide prebiotic (GOS) on performance, egg quality, and some blood parameters of commercial laying hens were investigated in a sample of 216 hy-line laying hens (w36) with the same average weight aging 50 to 62 weeks for a period ...
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In this research the effect of Bioplus B2 probiotic and galactooligosaccharide prebiotic (GOS) on performance, egg quality, and some blood parameters of commercial laying hens were investigated in a sample of 216 hy-line laying hens (w36) with the same average weight aging 50 to 62 weeks for a period of 12 weeks in a completely randomized design with 6 treatments, 6 replications and 6 hens per each replication in the cage system. Experimental treatments included 1) without additives (as control), 2) diets containing 0.1% Bioplus B2 probiotic, 3) to 6) diets; containing, 0.05, 0.1, 0.15 and 0.20 % of galactooligosaccharides prebiotic, respectively. The results indicated that both egg weight and mass was increased significantly (P<0.05) in the Bioplus B2 probiotic treatment. Egg production percentage, feed intake and feed conversion ratio were not significantly influenced by treatments. Using galactooligosaccharide at the levels of 0.05, 0.1 and 0.2 percent improved dry eggshell weight significantly while the levels of 0.05, 0.15 and 0.2 percent increased eggshell weight per unit area compared to the control (P<0.05). Total protein and albumin of serum increased in the Bioplus B2 treatment (P<0.05). Using Bioplus B2 probiotic and 0.15% galactooligosaccharide significantly decreased blood cholesterol level (P<0.05). In general, the results showed that the using of prebiotic galactooligosaccharide at the level of 0.15 % increases the weight of eggshell per unit area, decreases the blood serum cholesterol, and improves some performance traits compared to control group, therefore it can be used instead of probiotic Bioplus B2.
Moustafa Hajilou; Hamid Reza Mirzaei Alamouti; Mehdi Ganjkhanlou; Hamid Amanlou
Volume 17, Issue 2 , October 2015, , Pages 347-358
Abstract
Four ruminally-cannulated Holstein cows were used in a 4 × 4 Latin square changeover design within periods of 21 days to evaluate effects of feeding frequency of different sources of rumen degradable nitrogen on total tract digestibility of nutrients, feeding behaviors, rumen and blood metabolites ...
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Four ruminally-cannulated Holstein cows were used in a 4 × 4 Latin square changeover design within periods of 21 days to evaluate effects of feeding frequency of different sources of rumen degradable nitrogen on total tract digestibility of nutrients, feeding behaviors, rumen and blood metabolites of Holstein cows. Treatments were: 1) control diet which was as total mixed ration (TMR) offered once daily in the morning (08:00), 2) control diet in which a part of its soybean was offered at 19:00, 3) control diet in which a part of its urea was offered at 19:00 and 4) control diet in which a part of its fish meal was offered at 19:00. Rumination time increased in cows fed twice daily with protein sources (P<0.05). Total tract digestibility of dry matter and organic matter were higher in cows received urea at the evening time. Total tract digestibility of neutral detergent fiber increased with feeding all sources of protein at the evening time (P<0.05). Molar proportion of volatile fatty acids, rumen pH and rumen ammonia concentration were not affected by feeding time of protein sources. The results indicated that increasing delivery of rumen degradable nitrogen sources improved dry matter and fiber digestibility and chewing activity of non-lactating Holstein dairy cows.