Alireza Chegeni; Behrouz yarahmadi; Mohammad Shahvardi; Mohsen Mohamadisaei; Mirhasan Biranvand; alireza aghashahi; Hassan Fazaeli; amin kazemizadeh
Volume 25, Issue 1 , April 2023, , Pages 59-69
Abstract
The aim of the present study was to evaluate the effect of fodder beet on performance, carcass traits and blood parameters of fattening male lambs. 32 fattening male lambs with an initial weight of 28.05 ± 0.25 kg by using a completely randomized block design with four treatments and four blocks ...
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The aim of the present study was to evaluate the effect of fodder beet on performance, carcass traits and blood parameters of fattening male lambs. 32 fattening male lambs with an initial weight of 28.05 ± 0.25 kg by using a completely randomized block design with four treatments and four blocks for 84 days were fed with experimental diets including control (zero), 10, 20 and 30% fodder beet with the ratio 60% of the concentrate and 40% of the fodder as total mixed ration twice a day. During the experiment period, there was no significant difference in the weight of the lambs among the control group and the groups in which different levels of fodder beet were used in their diets. There was no significant difference in average daily gain among all groups except for the lambs fed with 20% fodder beet diet. In the group that received 30% fodder beet, the feed intake (DM/d) was the lowest compared to other groups (P<0.05). No significant difference in the feed conversion ratio among the experimental groups was observed. There was no difference in slaughter weight, empty-body weight, hot and cold carcass weight, carcass traits and carcass dressing percentage of lambs among different groups (P>0.05). The experimental treatments had no effect on the biochemical characteristics of lambs blood, but fodder beet intake increased blood hemoglobin (P<0.05). Based on the results, fodder beet up to 30% could be used in fattening lamb diets without negative effect on performance, carcass characteristics and blood parameters.
Rahman Ebne Abbasi; Fardin Hozhabri; Hassan Fazaeli
Volume 24, Issue 4 , December 2022, , Pages 427-439
Abstract
The effects of two levels of hydraulic pressure (220 and 240 bar) and two dwell times (five and 10 seconds) in the machine for making complete feed blocks containing three combinations of forages (wheat straw and alfalfa hay (WB); strawberry forage, wheat straw and alfalfa hay (SB); chickpea straw and ...
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The effects of two levels of hydraulic pressure (220 and 240 bar) and two dwell times (five and 10 seconds) in the machine for making complete feed blocks containing three combinations of forages (wheat straw and alfalfa hay (WB); strawberry forage, wheat straw and alfalfa hay (SB); chickpea straw and alfalfa hay (CB)) was studied on the physical properties of the blocks in a 2×2×3 3 factorial experiment based on a completely randomized design. The blocks containing pea straw and alfalfa had the maximum moisture evaporation at 240 bar pressure and 5 and 10 seconds stop time (P<0.05). The highest density was related to the blocks SB (552.6 kg/m3) and the lowest was related to the blocks CB (456.6 kg/m3; P<0.05). With increasing pressure and dwell time, the density of SB and CB increased compared to the WB. The highest post compression expansion was observed in the first 24 hours after production (P<0.05). The SB had a maximum number of fungal colonies at 240 bar and a dwell time of 5 and 10 seconds. Regardless of the type of forage and dwell time, SB and WB had a higher colony at 240 than at 220 bar, but in CB at 240 was less than 220 bar. Based on the results, 240 bar pressure and 10 seconds dwell time to produce complete feed blocks containing strawberry forage and chickpea straw, causes the desired compression and increases the storage time of the block.
Mahmood Dashtizadeh; Mohsen Sari; Hassan Fazaeli
Volume 22, Issue 3 , September 2020, , Pages 365-377
Abstract
In order to study the effects of sunflower oil and Konar leaves addition on performance, meat quality and fatty acids profile, an experiment wasconducted using 32 Adani male goat kids, with 17.8 ± 2.2 kg initial BW in a completely randomized design with a 2×2 factorial arrangement for 75days. ...
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In order to study the effects of sunflower oil and Konar leaves addition on performance, meat quality and fatty acids profile, an experiment wasconducted using 32 Adani male goat kids, with 17.8 ± 2.2 kg initial BW in a completely randomized design with a 2×2 factorial arrangement for 75days. Goat kids were randomly assigned to one of four treatments: 1- control, 2- 20% Konar leaves, 3- 2.5 % sunflower oil and, 4- 2.5 % sunflower oil+ 20% Konar leaves. The results showed that treatments had no effect on feed intake and final body weight of goat kids. Oil inclusion in the diettended to increase daily weight gain (P=0.06) and tended to decrease feed conversion ratio (P=0.07). Dry matter, ash, and crude proteinconcentrations, color indices, malondialdehyde concentration and pH of longissimus dorsi (LD) muscle were not affected by treatments. Totalsaturated fatty acids (p < 0.05) and total N6 fatty acids (p < 0.01) of LD are affected by interaction of oil and Konar leaves supplementation. Inclusion ofkonar leaves in the diet increased the polyunsaturated fatty acids to saturated fatty acids ratio in LD muscle of goat kids (p < 0.05). The fat content ofLD muscle increased with the inclusion of oil to the diets (p < 0.01). The results of this study showed that using Konar leaves and sunflower oil in thediet of Adani goat kids can improve the nutritive value of their meat by reducing saturated fatty acids and increasing polyunsaturated fatty acids.
Hassan Fazaeli; Farshid Mirzaei; Ahmad Afzalzadah; Mohammad Ali Norouzian; Mahdi Nadalian; hadi hosseini
Volume 22, Issue 1 , March 2020, , Pages 23-35
Abstract
This study was conducted to investigate the effect of dry corn gluten feed (DCGF) on nutritive value of corn silage by in vitro and in vivo methods. The firs stage of the experiment was conducted in a completely randomized design, included three treatments and 5 replicates, in which chopped ...
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This study was conducted to investigate the effect of dry corn gluten feed (DCGF) on nutritive value of corn silage by in vitro and in vivo methods. The firs stage of the experiment was conducted in a completely randomized design, included three treatments and 5 replicates, in which chopped corn forage was mixed with 0.0, 5 and 10 percent of DCGF and ensiled in 200L polyethylen barrels. After three months of ensiling, the silages were opened and evaluated. Voluntary intake and digestibility of the silages along with basal diet (Alfalfa hay+wheat straw+barley ground) were determined, using mature (two years old) male Shal sheep. Including of DCGF to corn silage increased (p<0.05)dry matter (DM) and crude protein (CP) in the silages respectively, but pH and organic matter values were not affected by the treatments. However, the DM content did not reach to optimum (35%) point. Concentration of neutral detergent fibre (NDF) was increased but acid detergent fibre (ADF) was decreased (p<0.05) as DCGF was increased in the corn silages. Addition of CGF increased dry matter intake of the silages (p<0.05). The digestibility of DM, OM and NDF were higher in silages containing DCGF (p<0.05). The intake of the digestible DM, OM and NDF were higher in DCGF content silages than those of basal diet and control silage (p<0.05). In general,adding DCGF to corn silage could improve silage quality as well as increasing voluntary intake (g/d) and digestibility when fed to sheep.
Pirouz Shakeri; Hassan Fazaeli; Mojtaba Zahedifar
Volume 20, Issue 2 , August 2018, , Pages 243-255
Abstract
The objective of this study was to evaluate the effects of different doses of pistachio by-products (PBP) tannin extracts obtained by water, ethanol 70 % and methanol 80 % on the soybean meals protein protection from ruminal degradability. Soybean meal supplemented with 0.5 and 1 % tannins of different ...
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The objective of this study was to evaluate the effects of different doses of pistachio by-products (PBP) tannin extracts obtained by water, ethanol 70 % and methanol 80 % on the soybean meals protein protection from ruminal degradability. Soybean meal supplemented with 0.5 and 1 % tannins of different tannin extracts of PBP. Ruminal degradability and disappearance of dry matter and crude protein in untreated soybean meal (control) and soybean meal treated by tannin extracts (6 treatments) was determined in an in situ trial (three head of castrated Taleshi male calves) and post ruminal disappearance was measured in DaisyII incubator. Soybean meal supplementation with 1 % tannin from water extract, 0.5 and 1 % tannin from ethanol and methanol extracts decreased the ruminal protein disappearance (P<0.01) without any negative effect on total gastrointestinal disappearance of dry matter and crude protein. Also, the addition of all of tannin extracts to soybean meal reduced (P<0.01) the concentration of rapidly degradable proteins. In conclusion, the results showed that tannins of water, ethanol and methanol of PBP extracts could be effective on soybean meals protein's protection from ruminal degradability; however, the use of tannin from water extract of PBP can be more economical and practical.
firouz asgari; mostafa yousef elahi; Hassan Fazaeli
Volume 20, Issue 1 , May 2018, , Pages 43-53
Abstract
The aim of this study was to examine use of Prosopis julifora pods (PJP) in lactating goats (twenty lactating Tali goats with body weight mean of 34 ± 2.5 kg) diet. Goats were divided in two groups of ten heads) One group with control diet and the other group with Prosopis julifora) and fed for ...
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The aim of this study was to examine use of Prosopis julifora pods (PJP) in lactating goats (twenty lactating Tali goats with body weight mean of 34 ± 2.5 kg) diet. Goats were divided in two groups of ten heads) One group with control diet and the other group with Prosopis julifora) and fed for 12 weeks. Diets were prepared based on goats’ requirements from both forage and concentrate with equal proportion. PJP rate in total experimental diet was 19.25%. Animals were weighed individually the beginning of the trial and every two weeks until the end of period. Their weight changes were calculated. Also, their weekly milk production rate and milk compositions were determined. The average daily milk yield and milk fat percent in fed goats with control diet and PJP diet was 550 and 570g, and 3.24 and 2.39%, respectively that weren’t statistically different. Milk compositions (fat, protein, ash, solid material and solid material without fat) weren’t affected by the diet. The body weight during of experimental period and also, between two groups was not significant different statistically. Total cost of feed and milk production of fed goats with 20% PJP diet was cheaper than control group. Therefore, PJP can be used as a feedstuff up to 20% of lactating goats’ diet and reduce nutrition cost.
Hassan Fazaeli; Alireza Aghshahi; Abdorreza Taimouri; Mohammad Khaki
Volume 18, Issue 1 , April 2016, , Pages 51-60
Abstract
In order to study the effect of dietary physical form on the fattening performance of Holstein male calves, an experiment was conducted in Animal Science Research Institute of Iran in 2011. The experimental diets were formulated and prepared with two physical forms including total mixed ration (TMR) ...
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In order to study the effect of dietary physical form on the fattening performance of Holstein male calves, an experiment was conducted in Animal Science Research Institute of Iran in 2011. The experimental diets were formulated and prepared with two physical forms including total mixed ration (TMR) and densified complete feed block (DCFB). In a completely randomized block design, with two treatments and four blocks (initial weight of the animals), 24 Holstein male calves were fed with either of the TMR or DCFB rations. During a five month feeding trial, the animals fed ad-libitum where feed intake, body weight gain and feed conversion ratio were recorded. The average feed intake were 8.1 and 8.4 kg for TMR and DCFB that were significantly (P<0.05) different between the treatments. The initial body weights were respectively 226 and 221 kg for the animals received TMR and DCFB, but the final weights were 361 and 373 kg, respectively that was higher (P<0.05) for the animals received DCFB. The average daily gain were 901 and 1016 g for TMR and DCFB respectively, which were significantly different (P<0.05) between the treatments. Feed conversion ratio were 9.0 and 8.3 for TMR and DCFB respectively that was significantly (P<0.05) lower in DCFB treatment. It is concluded that utilization of complete feed block improved feed intake, body weight gain and feed conversion ratio in fattening calves.
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
Hassan Fazaeli; Esmaiel Ismaily Rad; Mohammad Babaie
Volume 13, Issue 2 , March 2012, , Pages 11-18
Abstract
This experiment was conducted to improve the nutritive value of barley stubble for two consecutive years. After harvesting crop, at first year, a completely randomized design, with a 3 × 3 factorial experiment was conducted in which 27 plots were divided into nine treatments. The treatments including ...
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This experiment was conducted to improve the nutritive value of barley stubble for two consecutive years. After harvesting crop, at first year, a completely randomized design, with a 3 × 3 factorial experiment was conducted in which 27 plots were divided into nine treatments. The treatments including zero, 2.5 and five percent urea each with zero, three and six percent molasses were mixed with water and sprayed on the stubble (three plots per treatment). During five periods, all plots were sampled before and after spraying with 10 days intervals for the chemical analyses. The crude protein (CP) was increased but crude fiber (CF) decreased in urea-molasses treatments (P< 0.05). The Ash content was increased (P< 0.05) only in the treatments contained 6 percent molasses. At the second year, after harvesting the barley crop, four hectares of stubble was divided in four parts and sprayed with four treatments of urea-molasses liquor including: 1) 2.5 percent urea, 2) 2.5 percent urea +3 percent molasses, 3) 5 percent urea, 4) 5 percent urea +3 percent molasses. Forty eight Shal ewes were divided among the treatments and grazed for 50 days. All ewes showed body weight gain, during the experiment but the body weight changes were not different between the treatments. As a result of twining, the lambing rate was increased about 25 percent for the animals received five percent urea +3 percent molasses comparing to the other treatments.