Ameneh Naseri Moghadam; Mohammad Ebrahim Nooriyan Soroor; Fardin Hozhabri
Volume 25, Issue 1 , April 2023, , Pages 25-36
Abstract
In order to investigate the effect of licorice extract (LE) on growth performance, fermentation parameters, and rumen protozoan population in fattening lambs, 28 male lambs weighing 36.45 ± 1.75 kg in a completely randomized design with four treatments and seven replicates were used. Experimental ...
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In order to investigate the effect of licorice extract (LE) on growth performance, fermentation parameters, and rumen protozoan population in fattening lambs, 28 male lambs weighing 36.45 ± 1.75 kg in a completely randomized design with four treatments and seven replicates were used. Experimental treatmeشnts included: control, basic diet without licorice extract, and treatments one to three included basic diet plus five, 10 and 25 mg of LE per kilogram of DM. The ratio of forage to concentrate was 30:70, which was given to the animals as per their appetite. Adding 25 mg of the extract to the diet increased the daily gain and improved the feed conversion ratio (P<0.05). The pH of rumen fluid and gas production increased at the level of 25 mg of extract (P<0.05). Methane production was not affected by adding LE to the diet. The changes in metabolizable energy, degraded organic matter and concentration of volatile fatty acids in diets containing 5 and 25 mg of LE were more than other groups (P<0.05). The total population of protozoa as well as the number of Entodinia decreased by feeding diets containing LE (P<0.05) but the number of Isotrichida increased, significantly. Based on the results of this research, adding 25 mg/kg of licorice extract to the diet improves the rumen metabolism and the performance of fattening lambs, but it had no effect on the amount of energy loss in the form of methane.
Sayyed Mohsen Hosseini; Javad Rezaei; Yousef Rouzbehan
Volume 21, Issue 4 , January 2020, , Pages 461-473
Abstract
The present study was conducted to determine the chemical composition of Echinophora sibthorpiana and Pulicaria dysenterica and the effect of dietary inclusions of these plants on in vitro ruminal fermentation parameters and digestibility. Chemical composition of the experimental plants was determined ...
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The present study was conducted to determine the chemical composition of Echinophora sibthorpiana and Pulicaria dysenterica and the effect of dietary inclusions of these plants on in vitro ruminal fermentation parameters and digestibility. Chemical composition of the experimental plants was determined using standard methods and different levels of each plant were included in the diet. In vitro gas production technique was performed with seven treatments (control diet, diets containing 15, 30 or 45 percentage of Echinophora and diets containing 15, 30 or 45 percentage of Pulicaria) and three replicates. Results indicated that crude protein and organic matter digestibility (OMD) of Echinophora (10.4 and 61.8 percentage, respectively) were higher than Pulicaria (7.85 and 52.5 percentage, respectively) (P<0.05). Inclusion of Echinophora in the diet increased OMD and metabolizable energy, while using Pulicaria reduced these parameters (P<0.05). Ruminal ammonia decreased with inclusion of Echinophora in the diet (P<0.05), but it was not affected by Pulicaria. Dietary inclusions of Echinophora and Pulicaria decreased protozoa population and methane production (P<0.05). The ruminal antioxidant capacity was improved by inclusions of Echinophora and Pulicaria in the diet (P<0.05). Based on the results, theuse of Echinophora up to 45 percentage and Pulicaria up to 30 percentage of diet dry matter is recommended in ruminants. However, the forage to concentrate ratio should be reduced when feeding Pulicaria in high-performance animals. On the other hand, using Echinophora and Pulicaria improves ruminal antioxidant capacity and reduces methane release to the environment.
Aynaz Aslaniyan; Farzad Ghanbari2; Javad Bayat Kouhsar; Behrouz Karimi Shahraki
Volume 18, Issue 2 , June 2016, , Pages 235-248
Abstract
This research was conducted to determine the effect of gamma ray (GR) (100 and 150 kGy), sodium hydroxide (50 g/kg DM) and calcium oxide (160 g/kg DM) on gas production parameters and in vitro digestibility of soybean straw. All treatments, except for the gamma ray (100 and 150 kGy) did not have gas ...
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This research was conducted to determine the effect of gamma ray (GR) (100 and 150 kGy), sodium hydroxide (50 g/kg DM) and calcium oxide (160 g/kg DM) on gas production parameters and in vitro digestibility of soybean straw. All treatments, except for the gamma ray (100 and 150 kGy) did not have gas production up to 4 hours after incubation and there was a lag time. From 8 to 96 hours of incubation, the highest gas production was observed in sodium hydroxide + gamma ray (100 and 150 kGy) treatments (P< 0.05). Processing had no effect on gas production rate (P>0.05), but increased gas production potential (b) (P<0.05). The highest amount for b fraction was observed in sodium hydroxide + GR (100 and 150 kGy) treatment. Organic matter digestibility (OMD), metabolizable energy (ME), net energy (NE) and short chain fatty acids (SCFA) increased by processing (P<0.05). The highest increase was observed for sodium hydroxide (100 and 150 kGy). In vitro digestibility of the dry matter (DM) and organic matter (OM) was increased by GR, sodium hydroxide, and their combination (P<0.05). However, treatments with calcium oxide did not affect these traits. Except for GR at doses of 100 and 150 kGy, the other treatments reduced ammoniacal nitrogen (NH3-N) (P<0.05). Microbial mass production after 24 hours incubation showed decrease in calcium oxide and calcium oxide + GR treatments (P<0.05). Based on the results of this research, nutritional value of soybean straw improves with GR and sodium hydroxide treatments.
Shahin Nasimi Esfahani; Morteza Chaji; Tahereh Mohammadabadi; Mohammad Bojarpour
Volume 18, Issue 1 , April 2016, , Pages 39-49
Abstract
The digestibility and fermentation parameters of the diets containing leaf, pod and seed of the Subabul tree in sheep was determined by using two steps digestion and gas production (GP) methods. The experimental diets consisted of 0.0 (control), 25, 50, 75 and 100 percent of the leaf, pod and seed of ...
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The digestibility and fermentation parameters of the diets containing leaf, pod and seed of the Subabul tree in sheep was determined by using two steps digestion and gas production (GP) methods. The experimental diets consisted of 0.0 (control), 25, 50, 75 and 100 percent of the leaf, pod and seed of the Subabul tree that were replaced with alfalfa in diets of sheep. Diets containing 50 percent seed of the Subabul had higher GP compared to the control diet (P<0.05). The highest true digestibility of organic matter in Subabul leaf was belonged to diet contains 100 percent leaf. The diet contain 100 percent had the highest partitioning factor (PF) and microbial biomass efficiency (P<0.05) compared to other levels of the Subabul pod. The digestibility of DM, NDF and ADF of diets contain the pod of the Subabul tree for all levels were less than control (P<0.05). There are no significant differences between digestibilities of NDF and ADF of diets contain up to 75 percent the leaf of the Subabul tree and others diets. Digestibility of DM, NDF and ADF was more than control diet (P<0.05) by increasing the amount of the seed of the Subabul tree in the diets (75 and 100 percent of the seed of the Subabul). According to the results, the leaf and seed of the Subabul can be replaced up to 100 percent with alfalfa in the diets of sheep without any negative effect on fermentation and digestion. The nutritional value of sheep diets can be improved by replacing the alfallfa with Subabul tree seeds.
Nasrin Hoseinpour; Mohammad Ali Norouzian; Ahmad Afzalzadeh
Volume 16, Issue 2 , October 2015, , Pages 93-101
Abstract
This study was conducted to investigate effect of different sources of copper on gas production parameters and nutrients digestibility in Zandi male lambs. In the first experiment, 18 male lambs (initial body weight 17.53±1.62) divided into three groups and fed one of the three experimental diets ...
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This study was conducted to investigate effect of different sources of copper on gas production parameters and nutrients digestibility in Zandi male lambs. In the first experiment, 18 male lambs (initial body weight 17.53±1.62) divided into three groups and fed one of the three experimental diets for 70 days. Dietary treatments were control (basal diet without copper supplement), basal diet plus 10 ppm copper from sulfate and basal diet plus 10 ppm from proteinate copper. In comparison with control, copper supplementation improved average daily gain and feed conversion ratio, but there was no significant difference among the dietary treatments for dry matter intake. Dry matter, organic matter, crude protein and acid detergent fiber digestibility was higher for lambs fed with organic copper compared to lambs fed with control and inorganic copper (P<0.01). In the second experiment, an in vitro gas production technique was used to evaluate the effects of copper sources on the amount and rate of gas production, dry matter degradability, utilization of metabolizable energy (ME), and ruminal fermentation patterns using rumen fluid from three lambs as inoculum. Rate of gas production (c) did not differ among the treatments. Asymptotic of gas production (b) was higher for diets containing supplemental copper compared to control. It seems that supplementation of fattening lamb diet with of organic copper could be improved rumen fermentation and performance of lambs.
Iran Khodadadi; Tahere Mohammadabadi; Morteza Chaji; Mohsen Sari
Volume 16, Issue 2 , October 2015, , Pages 123-135
Abstract
This experiment aimed to investigate the effect of (zero, 20, 40 and 60 mg/kg Atriplex forage) malva sylvestris on digestibility and microbial fermentation of Atriplex in one-humped camel. Fermentation parameters by gas production technique and in vitro digestibility by two-stage digestion were measured ...
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This experiment aimed to investigate the effect of (zero, 20, 40 and 60 mg/kg Atriplex forage) malva sylvestris on digestibility and microbial fermentation of Atriplex in one-humped camel. Fermentation parameters by gas production technique and in vitro digestibility by two-stage digestion were measured by two years old female fistulated camels. Addition 40 and 60 mg/kg malva sylvestris increased gas produced from Atriplex forage (P<0.05). Gas production rate constant didn’t affect by malva sylvestris (P>0.05). Addition malva sylvestris (60 mg/kg) to Atriplex, significantly decreased partitioning factor, microbial biomass, the efficiency of microbial biomass and organic matter actually degradable (P<0.05). Addition of Malva sylvestris 40 and 60 mg/kg were significantly reduced medium pH (P<0.05). The compared with control the highest ammonia-nitrogen concentrations was for treatment containing 20 mg/kg malva sylvestris (11.37 mg/100 ml) (P<0.05). Also this treatment had the greatest NDF digestibility comparison to control (P<0.05). Adding malva sylvestris in 20, 40 and 60 mg/kg to Atriplex increased the protozoa population at 12 and 24 in comparison to control 48 h incubation (P<0.05). Species of Diplodinium camli, Diplodinium maggi, Epidinium ecudatum and Eudiplodinium maggi in treatments containing malva sylvestris were the highest. In conclusion, high fermentation malva sylvestris increase digestibility and gas production of Atriplex in one-humped camel diets.
Nader Papi; Farokh Kafilzadeh; Hasan Fazaeli
Volume 17, Issue 2 , October 2015, , Pages 335-345
Abstract
This research was assigned to study the top crop yield potential and nutritive value of Jerusalem artichoke (Helianthus tuberosus), using a completely randomized designed with three treatments and four replications. The forage was cut at three growing stages where plant high, fresh and dry forage yield ...
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This research was assigned to study the top crop yield potential and nutritive value of Jerusalem artichoke (Helianthus tuberosus), using a completely randomized designed with three treatments and four replications. The forage was cut at three growing stages where plant high, fresh and dry forage yield and leave/steam ratio were recorded. First and second cut were made when the plant heights were 100-150 and 150-200 cm, respectively. Forage from the third cut was at the early bloom stage (200-250cm). Then the cuts were chopped and sampled and nutrient contents and in vitro digestibility of the samples were determined. The amount of fresh and dry forage yield were 45.20 and 15.95 (ton/h) in first cut, and 64 and 29.85 (ton/h) in the last cut (flowering stage), respectively. Yield of second cut was significantly higher (p
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.