rashid safari - Academia.edu (original) (raw)

Papers by rashid safari

پژوهشهای تولیدات دامی, Apr 1, 2021

British Society of Animal Science, Jul 3, 2007

Research on Animal Production

The aim of this study was to investigate the effect of different levels of aflatoxin on the gas p... more The aim of this study was to investigate the effect of different levels of aflatoxin on the gas production, in vitro fermentation parameters, dry matter and organic matter digestibility of sheep's diet. This experiment was conducted in a completely randomized design with 5 treatments and 4 replicate per treatment. The treatments included 1.diet without aflatoxin and methanol (control), 2.control with methanol, 3.diet containing 400 ng / ml of aflatoxin B1, 4.diet containing 800 ng / ml of aflatoxin B1, and 5.diet containing 1200 ng / ml of aflatoxin B1 in ruminal fluid. Treatments were incubated at 0, 12, 24, 36, 48, 60, 72, 84, 96 hours and the amount of gas produced was measured using a barometer at 39 °C. The results showed that treatments with high levels of aflatoxin, especially 1200 ng / ml rumen fluid, significantly decreased gas production compared to those without aflatoxin. Addition of different levels of aflatoxin significantly decreased dry matter and organic matter digestibility, microbial mass production, and biodegradability index compared to control group. The results of this study showed that rumen microorganisms have the ability to neutralize aflatoxin at low levels and fermentation conditions are not significantly affected. With increasing level of aflatoxin in the diet, the gas production, digestibility of dry matter and organic matter, and also microbial mass production and PF was reduced. Therefore, it can be concluded that aflatoxin modifies ruminal fermentation processes with reduced nutrient degradability, which is dependent on aflatoxin concentration.

International Silage Conference, 2012

The purpose of this study was to investigate the effect of adding various levels of waste sour le... more The purpose of this study was to investigate the effect of adding various levels of waste sour lemon pomace to lucerne on the properties and ruminal gas production of silage. Levels of 0 (Control), 25 (L1), 50 (L2), 75 (L3), and 100 (L4) % lemon pomace were replaced by lucerne for silage preparation and silenced for 60 days. The experiment was conducted in a completely randomized design with three replications (3 silos per treatment). After opening the silos, pH and dry matter were measured immediately, and the dried samples were kept at -20 until further tests. The silage pH decreased with the addition of lemon pomace compared to the control (p

Pizhūhishhā-yi ̒ulum-i dāmī-i Īrān, 2015

To estimate the effect of microencapsulated fish oil on blood metabolites, rumen and blood plasma... more To estimate the effect of microencapsulated fish oil on blood metabolites, rumen and blood plasma fatty acids concentrations twelve Sannan dairy goats with 30 ± 5 days in milk (DIM) were allocated to 3 treatments in a 3×2 change over design with 2 periods of 30 days. Treatments were: 1) the control (without fish oil), 2) microencapsulated fish oil (2% fish oil capsulated in 6% treated whey protein concentrate, 3) fish oil (2% fish oil and 6% whey protein concentrate). Concentration of C18:0 in the rumen for microencapsulated fish oil decreased significantly in comparison with the control. The same manner was observed in goat's blood plasma for microencapsulated fish oil. Microencapsulated fish oil led to a significant increase in polyunsaturated fatty acids concentration, hence concentration of C18:3, C20:5 EPA, C22:5 DPA and C22:6 DHA as a source of ω3 fatty acids increased 10, 20, 10 and 13 folds in comparison with the control and 10, 20, 2 and 2.5 folds in comparison with the...

... 08-24. Title : ( In vitro gas production technique to determining of nutritive value of vario... more ... 08-24. Title : ( In vitro gas production technique to determining of nutritive value of various sources of citrus pulp ). , Abdol Mansour Tahmasbi , Abbas Ali Naserian , REZA VALIZADEH , RASHID SAFARI , Full Text. Abstract. his ...

The purpose of this study was to investigate the nutritional effects of various sources of organi... more The purpose of this study was to investigate the nutritional effects of various sources of organic and inorganic selenium sources plus vitamin E on qualitative characteristics of Japanese quail eggs, stored at 5 ° C. A total of 144 Japanese quail at 6 weeks of age were randomly distributed into 3 experimental groups with 4 replicates and 12 birds per replicate. Treatments were: 1- Basal diet 2- Basal diet + 0.4 mg/kg sodium selenite mineral supplement with 30 mg/g of vitamin E, 3-Basal diet + 0.4 mg/kg organic selenium supplement sel-plex and 30 mg/kg of vitamin E. Quails were fed with experimental diets for six weeks. At the end of the sixth week, 24 eggs from each experimental unit were randomly selected and kept at 5 C˚ ¬for 30 days. Eggs stored at 15 ¬and 30 days after storage at 5 C˚ were analyzed for qualitative characteristics including weight loss, color intensity, Haugh unit, yolk pH and albumen pH. The results of the experiment showed that total weight loss did not signifi...

This experiment was conducted to investigate the effect of addition of different sources of selen... more This experiment was conducted to investigate the effect of addition of different sources of selenium Plus vitamin E in Japanese quail diet on egg quality during storage. A total of 144 6-week-old Japanese quails were used. Birds were randomly, distributed into 3 treatments using a complete randomized design with four replicates per treatment and 12 bird per replicate. The 3 dietary treatments were: 1- Basal diet, 2- Basal diet + 0.4 mg /kg Sodium selenite and 120 mg / kg of vitamin E and 3- basal diet + 0.4 mg / kg Organic selenium Selplex and 120 mg / Kg of vitamin E. Quails were fed with experimental diets for six weeks, and then from each experimental unit, 24 eggs were randomly collected and stored at 22 °C for 30 days. Eggs were analyzed for 15 and 30 days after storage at 22 °C in terms of qualitative traits including weight loss, yolk color intensity, Haugh unit (HU) and pH of yolk and albumen. The results showed that weight loss in the group on organic and inorganic suppleme...

Samples of Salvia leriifolia were collected from Khorasan mountains in different growing stages. ... more Samples of Salvia leriifolia were collected from Khorasan mountains in different growing stages. Chemical composition, rumen degradability characteristics of dry matter (DM), crude protein (CP) and neutral detergent fiber (NDF) of Salvia leriifolia whole plant (stem and leaves) in different flowering stages and plant leaves in comparison with alfalfa hay and triticale straw were measured using 4 permanently fistulated steers. CP contents for the whole plant Salvia leriifolia in early flowering, mid flowering and full bloom stage and Salvia leriifolia leaves were 9.57, 16.10, 9.57 and 15.81 percent respectively and for alfalfa hay and triticale straw were 13.99 and 3.85 percent respectively. Rumen degradability measurements of treatments indicated that most parts of these nutrients were degraded during the first 24 hrs of incubation, degradation continued up to 48 hrs with the much lower rates. DM degradability of Salvia leriifolia whole plant harvested at early, mid and end of the flowering stages after 96 hrs incubation were near to those of alfalfa hay and higher than triticale straw. More than 70% of CP and 50% NDF of whole plant Salvia leriifolia were in the form of rumen degradable. Gas production technique also showed that most of the gas production is in the first 48 hour and gas amount for different stages of flowering and plant leaves were between alfalfa and triticale straw. It is concluded that Salvia leriifolia can be regarded as a forage closed to alfalfa hay for ruminants.

Resistance of microencapsulated fish oil (MFO) in the rumen and its effects on fermentability of ... more Resistance of microencapsulated fish oil (MFO) in the rumen and its effects on fermentability of nutrients in the rumen was studied in 3 experiments. The key parameter in these studies was the amount of oil released from the microcapsules and their effects on gas production and rumen degradability in comparison with unprotected fish oil (FO). In the first experiment the effect of rumen and abomasum pH on disintegration of MFO and amount of fish oil released was investigated. In the second experiment effects of MFO on in vitro gas production and rumen fermentation kinetics was undertaken and in the third experiment in vitro Batch culture was used in order to estimate the effect of MFO on rumen degradability. Experimental treatments in the first experiment were 1) simple Microcapsules 2) tannic acid treated Microcapsules and 3) Ca2+ treated Microcapsules. In the second experiment or gas production study 2 kinds of basal diet including the forage diet (dry alfalfa) and the complete diet (forage to concentrate with ratio of 60:40) with 8 treatments for each experimental diet: including; 1) the control (without supplement), 2) 4% fish oil, 3) 12% whey protein concentrate and 4% fish oil, 4) 12% whey protein concentrate and 1.2% tannic acid, 5) 12% whey protein concentrate, 4% fish oil and 1.2% tannic acid, 6) 16% simple microcapsules 7) 17.2% tannic acid treated Microcapsules and 8) 17.2% Ca2+treated microcapsules were used. In the third experiment dry forage used as basal diet with 6 experimental treatments including; 1) the control (without supplement), 2) 4% fish oil, 3) 12% whey protein concentrate and 4% fish oil, 4) 16% simple microcapsules 5) 17.2% tannic acid treated microcapsules and 6) 17.2% Ca2+ treated microcapsules with 24h incubation time. In the first experiment the amount of oil released of microcapsules in rumen were 74, 7 and 12% and in abomasum were 74, 59 and 67% for simple, tannic acid and Ca2+ treated microcapsules respectively. Resistance of tannic acid treated microcapsules in the rumen and abo [...]