Leila Taherabadi; Farokh Kafilzadeh
Volume 23, Issue 3 , September 2021, , Pages 387-394
Abstract
The aim of this study was to investigate the effect of Lactobacillus fermentum 92069 (LF) isolated from yogurt on chemical and microbial fermentation and aerobic stability of high moisture corn silage. After propagation and concentration determination LF was used to prepare experimental treatments with ...
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The aim of this study was to investigate the effect of Lactobacillus fermentum 92069 (LF) isolated from yogurt on chemical and microbial fermentation and aerobic stability of high moisture corn silage. After propagation and concentration determination LF was used to prepare experimental treatments with concentrations of zero (control, LF0), 1×106 cfu/g fresh forage (LF1) and 2×106 cfu/g fresh forage (LF2). Three replicates of each treatment were stored in laboratory silos for 90 days. The results showed that the chemical composition of silages (DM, NDF, ADF, CP, WSC) was not affected by addition of LF. LF2 had a significant lower pH compared to the control (P<0.05). LF1 and LF2 silages showed a higher concentration of lactic acid (P<0.05). Concentration of acetic acid increased and mold population decreased in LF2 compared to the other silages (P<0.05). There was no significant difference between population of lactic acid bacteria and yeast in silages. The aerobic stability of LF0 and LF1 silages decreased significantly compared to LF2 (P<0.05). During the aerobic stage after opening the silos, LF2 silage had the lowest pH (P<0.05). However, yeast population of silages during the aerobic stage was not affected by treatment. The results of this study showed that Lactobacillus fermentum 92069 has the potential to be used as a silage inoculant.
Mohammad Reza Ghorbani; tahereh mohammadabadi; Hadis Mirzaei
Volume 22, Issue 3 , September 2020, , Pages 417-429
Abstract
This experiment was conducted to investigate the effect of processed date pit on broiler performance. In this experiment, 280 broiler chicks were used in a completely randomized design with seven treatments and four replicates. The experimental treatments were: 1- control (diet without date pit), 2- ...
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This experiment was conducted to investigate the effect of processed date pit on broiler performance. In this experiment, 280 broiler chicks were used in a completely randomized design with seven treatments and four replicates. The experimental treatments were: 1- control (diet without date pit), 2- 10 percent raw date pit, and treatments 3 to 7- were 10 percent date pit that processed with steam pressure, NaOH, and fermented with Lactobacillus fermentum, Bacillus subtilis, and Aspergillus niger respectively. The crude protein content of processed date pit was higher, and the ether extract content was lower (exept NaOH) than raw date pit (p < 0.05). The feed intake, body weight gain, feed conversion ratio and cecal microbial population of broiler chickens were not affected by experimental treatments. The small intestine length of birds that fed diets containing processeddate pit with steam pressure and NaoH was significantly reduced in comparison with birds resived diets containing fermented date pit with Aspergillus niger and without date pit (p < 0.05). The highest amount of litter dry matter and lowest amount of excreta ash was observed in groups fed diet containing raw date pit (p < 0.05). According to the results of this study, the processing methods of date pit has no effect on broiler performance and cecal microbial population. Therefore, due to the high cost of processing, and the favorable effects of feeding raw date pit on broiler litter quality, the use of raw date pit in broilers diet is recommended.
Naser Mahmoudnia; Behrouz Dastar; Omid Ashayerizadeh; Javad Bayat
Volume 21, Issue 2 , July 2019, , Pages 261-271
Abstract
Two experiments were conducted to determine the nutrient ileal digestibility of raw date pit (RDP) and fermented date pit (FDP) as well as their effects on performance and some bloody traits in broiler chickens,. The first experiment was conducted in a completely randomized design with 72 male broiler ...
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Two experiments were conducted to determine the nutrient ileal digestibility of raw date pit (RDP) and fermented date pit (FDP) as well as their effects on performance and some bloody traits in broiler chickens,. The first experiment was conducted in a completely randomized design with 72 male broiler chicks, three treatments and six replicates (four chicks each) . The treatments consisted of a corn – soybean diet and two experimental diets which prepared by replacing RDP and FDP to basal diet at 25 %. The second experiment was performed in a 2× 4 factorial arrangement along with a control treatment in completely randomized design in a population of 540 day old broiler chickens in nine treatments with five replicates (12 chicks each). Dietary treatments included a diet without date pit (control), and diets containing two, four, six and eight percent of RDP or FDP. The digestibility of crude protein, fiber and ash in the FDP were higher than RDP (p<0.05). Feeding broiler chickens with FDP compared to RDP, improved weight gain (2110.5 g vs 1991.3 g ) and increased feed intake (p<0.05). The blood cholesterol and LDL-c decreased in chickens fed by FDP compared to RDP (p<0.05). According to the results of this experiment fermentation of date pit increases digestibility of its nutrients and improves weight gain of broiler chickens.
Aazam Mirheidari; Noor Mohamad Torbatinejad; Saeed Hassani; Pirouz Shakeri
Volume 20, Issue 4 , February 2019, , Pages 553-564
Abstract
Two experiments were conducted to assess the addition of pistachio by-product biochar (PBB) to lactatingIn first experiment, the effects of the addition of different levels (0, 0.5, 1 and 1.5% diet on dry matter basis, DM) ofPBB on rumen fermentation parameters after 24h of incubation were investigated ...
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Two experiments were conducted to assess the addition of pistachio by-product biochar (PBB) to lactatingIn first experiment, the effects of the addition of different levels (0, 0.5, 1 and 1.5% diet on dry matter basis, DM) ofPBB on rumen fermentation parameters after 24h of incubation were investigated in a completely randomized designwith four treatments and three replications. Second experiment was designed to evaluate effect of feeding selectedlevel of PBB on performance and nutrient digestibility of 8 lactating Kermanian ewes in a Latin square change-overdesign with two 21-day periods. Methane production and ammonia-N concentrations decreased linearly (P<0.01), andpH increased linearly (P<0.01) as the dietary level of PBB raised. With the addition of 1%diet, milk yield, blood glucose, digestibility of DM increased (P<0.05) and blood urea nitrogen (BUN) decreased(P<0.05) compared to control group. In general, adding 1% of PBB to lactatingand digestibility of DM.
Sharifeh Ghavidel Heydari; Farzad Bagherzadeh Kasmani; Mehran Mehri
Volume 20, Issue 4 , February 2019, , Pages 601-611
Abstract
This experiment was conducted to assess the effect of safflower meal (SFM) containing microbial and enzyme supplementations on performance, meat quality and humoral immunity of Japanese quail. A total of 300 seven-days-old Japanese quails were assigned in a completely randomized design to five treatments, ...
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This experiment was conducted to assess the effect of safflower meal (SFM) containing microbial and enzyme supplementations on performance, meat quality and humoral immunity of Japanese quail. A total of 300 seven-days-old Japanese quails were assigned in a completely randomized design to five treatments, four replications and 15 chicks in each replication. The experimental treatments included 1) a corn and soybean meal based diet (control) 2) diet containing 20% SFM 3) diet containing 20% Fermented SFM 4) diet containing 20% SFM + Calsporin® probiotic at a rate of 50 mg/kg feed and 5) diet containing 20% SFM+ Endo-Power® enzyme to the amount of 125 mg/kg feed. The results of this study showed that the use of fermented SFM, Calsporin® probiotic and enzyme treatments improved weight gain and feed intake of chicks when compared to control group (P<0.05). The feed conversion ratio for the chicks in control group and quails receiving diets containing fermented SFM and SFM+ Endo-Power® enzyme was lower than that of other experimental groups (P<0.05). Birds fed with SFM had lower meat cooking loss (P<0.05). The meat water holding capacity and also antibody titer against sheep red blood cell (SRBC) were higher in treatment receiving fermented SFM when compared to control group (P<0.05). According to the positive effects of nutrition with fermented SFM and containing probiotic and enzyme supplements on performance, meat quality and immunity system of Japanese quail, this accessible and inexpensive source of protein could be used in quail diet.
Zeinab Yousefi; Tahereh Mohammadabadi; Morteza Chaji; Mohammad Bojarpour
Volume 16, Issue 1 , May 2014, , Pages 31-41
Abstract
This experiment was conducted to investigate the digestibility and fermentation parameters of diets containing flower, pod with seed and leaf of siris in sheep by two-step digestion and gas production methods. The experimental diets were including zero, 25, 50, 75 and 100 percent of Siris flower, pod ...
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This experiment was conducted to investigate the digestibility and fermentation parameters of diets containing flower, pod with seed and leaf of siris in sheep by two-step digestion and gas production methods. The experimental diets were including zero, 25, 50, 75 and 100 percent of Siris flower, pod and leaf. The result showed that gas production potential of diet containing 50 percent leaf was greater than other treatments (P<0.05). Gas production rate of diet containing 75 percent flower showed significant increase compared with the other diets (P<0.05). Partitioning factor, microbial biomass, biomass efficiency were the greatest for diets containing 100 percent leaf and different levels of pod (P<0.05). Dry matter digestibility of diets including different levels of siris leaf, 50 percent siris flower and 25 percent siris pod and neutral detergent fiber digestibility of diets including different levels of siris flower and 25 percent Siris pod were higher compared to control diet (P<0.05). The lowest concentration of ammonia nitrogen was belonged to diets containing 100 percent leaf and pod of Siris (P<0.05). It could be concluded that Siris leaf, flower and pod with seed of siris can be used instaed of alfalfa in sheep diet and increase digestibility and diet ruminal fermentation.