Esameel Rouzrokh; Armin Towhidi; saeed zaeinoaldini; Mojtaba Emamverdi
Volume 24, Issue 4 , December 2022, , Pages 501-509
Abstract
The aim of the present study was to compare sponge and cider with two different brands in estrous synchronicity, vaginal health and off-breeding performance in Moghani ewes. For this purpose, 120 ewes of Moghani breed were selected and randomly divided into four experimental groups. Ewes in the first ...
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The aim of the present study was to compare sponge and cider with two different brands in estrous synchronicity, vaginal health and off-breeding performance in Moghani ewes. For this purpose, 120 ewes of Moghani breed were selected and randomly divided into four experimental groups. Ewes in the first and second groups, using sponge Sponjavet and CIDER Eazi breed (as valid and common brands) for 12 days, respectively, and the third and fourth groups, respectively, using sponge Fluorojest and CIDER Progest (as New brands made jointly by Iran and China) were treated for 12 days. Ewes in all groups received 400 IU units of eCG at the time of sponge and cider harvest. The rate of vaginal mucosal discharge and adhesion in sponge was higher than cider (P< 0.01). However, there was no significant difference between reproduction and progesterone concentrations between CIDER and sponge as well as brands of these two tools.Therefore, due to lower price and similar efficiency, Sponge Fluorojest and CIDER Progest can be considered as an appropriate alternative to common commercial sponge and CIDER..
Reza Karimi; Armin Towhidi; Mahdi ganjkhanlou; Sepideh Khoee; Hamid Ghasemzadeh-Nava; Amir Alijani; Mohamadjavad Mozafari
Volume 24, Issue 3 , October 2022, , Pages 365-372
Abstract
The aim of the present experiment was to evaluate the effect of feeding a glucogenic diet on the somatotropic axis of early lactation Holstein dairy cows. Sixteen fresh cows were used in a completely randomized design with two treatments and eight replicates in each treat. In the treatment of glucogenic ...
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The aim of the present experiment was to evaluate the effect of feeding a glucogenic diet on the somatotropic axis of early lactation Holstein dairy cows. Sixteen fresh cows were used in a completely randomized design with two treatments and eight replicates in each treat. In the treatment of glucogenic diet, cows received 600 g of encasulated glucose daily as top dressed. In the control treatment, the cows received daily the same amount of glucose and coating material (mainly fat). Experimental diets were fed from day 4 to 30 after calving. Milk production and dry matter intake were recorded daily. Blood samples collected on days 4, 15 and 29 after parturition from coccygeal vein. The results show that there is no significant difference between treatments in terms of milk yield, energy corrected milk yield, 3.5% fat corrected milk yield, dry matter intake and blood glucose concentration. The glucogenic diet caused a significant increase in blood insulin (P<0.05) and a numerical increase in blood IGF-1 (P<0.15). Cows that received control diet showed a significant decrease in IGF-1 concentration (P<0.05) but no significant decrease was observed for cows received diet containing glucogenic supplement. The results of this study showed that feeding a glucogenic supplements can affect the somatotropic axis of early cows and cause an increase glucose turnover and blood insulin and relative improvement of blood IGF-1 levels.
amir karamzadeh-dehaghani; Armin towhidi; mahdi Zhandi; Naheed Mojgani
Volume 22, Issue 4 , December 2020, , Pages 659-688
Abstract
To investigate the effect of oral administration of prepared specific egg yolk antibody (IgY) against enterotoxigenic Escherichia coli K99 on growth performance, health, the prevalence of diarrhea of neonatal calves, an experiment was conducted using 60 newborn calves in a completely randomized design ...
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To investigate the effect of oral administration of prepared specific egg yolk antibody (IgY) against enterotoxigenic Escherichia coli K99 on growth performance, health, the prevalence of diarrhea of neonatal calves, an experiment was conducted using 60 newborn calves in a completely randomized design with two treatments. Calves were kept individually. Calves in the control group received only milk or colostrum for 30 days and calves in the treatment group received milk or colostrum with IgY against inactivated K99. During the experiment, health parameters and the prevalence of diarrhea were recorded daily, and growth performance was evaluated weekly. The results showed that average daily gain, starter dry matter intake and feed and milk efficiency were higher in the IgY group than the control group (P<0.05). The general health score in the IgY group was higher than control group and fecal and ear scores in this group were significantly lower than the control group (P<0.05). The count of fecal coliforms in the IgY group was decreased by approximately one log compared to the control group (P<0.05). The results of the present study showed that oral administration of IgY against enterotoxigenic Escherichia coli K99 has beneficial effects on health and average daily gain of suckling Holstein calves and It can be a good way to replace antibiotics.
Touba Nadri; saeed zeinoaldini; Armin towhodi; Gholamhossein Riazi; Mahdi zhandi; Mohsen Sharafi
Volume 22, Issue 3 , September 2020, , Pages 471-477
Abstract
This study was designed to add the reduced glutathione to a lecithin nanoparticle-based extender and evaluate the quality of bull sperm after freezing and thawing. In the present study, the effect of four different levels of glutathione (0, 1, 2.5 and 5 mM) in extender-based on lecithin nanoparticles ...
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This study was designed to add the reduced glutathione to a lecithin nanoparticle-based extender and evaluate the quality of bull sperm after freezing and thawing. In the present study, the effect of four different levels of glutathione (0, 1, 2.5 and 5 mM) in extender-based on lecithin nanoparticles was evaluated. The lecithin nanoparticles were prepared and the particle size was reduced by using a sonicator device. During three weeks, 48 ejaculates from six Holstein bulls were collected and frozen. Properties evaluated after freezing and thawing were kinetic parameters (CASA), membrane activity (HOST), membrane integrity (eosin-nigrosine) and morphology (Hancock solution). The results showed that using 2.5 mM glutathione in the extender significantly increased total and progressive motility (63.38±1.5 and 43.1±1.1 respectively, P <0.05). The results of eosin-nigrosine staining and Host test showed that the highest viability and cell membrane functionality were related to 2.5 mM treatment (64.8±1.5 and 58.1±1.1 respectively) (p < 0.05). In general, 2.5 mM glutathione could improve the quality of bull sperm compared with other concentrations after freezing and thawing process. It seems that the 2.5 mM glutathione is optimum concentration for bull extender based on the lecithin nanoparticles.
Hamidreza Pooyan; Armin Towhidi; Mehdi Dehghan banadaky; Mohsen Farzaneh; Jalal Hasan
Volume 22, Issue 2 , June 2020, , Pages 313-324
Abstract
In order to evaluate the effect of bi-partial toxin binder "Biotox" on health status and productive parameters, sixteen Holstein cows were classified into two groups, biotox (supplemented with Biotox) and control (without Biotox). Feed intake, dry matter intake, body weight, body condition ...
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In order to evaluate the effect of bi-partial toxin binder "Biotox" on health status and productive parameters, sixteen Holstein cows were classified into two groups, biotox (supplemented with Biotox) and control (without Biotox). Feed intake, dry matter intake, body weight, body condition score, rectal temperature, respiratory rate, heartbeat, milk yield and compounds and blood parameters were measured and recorded. In control group feed intake, dry matter intake, body weight and body condition score were significantly decreased from forth to seventh week, while rectal temperature, respiratory rate and heartbeat were increased (P≤0.05) during the entire period. The milk yield increased non significantly during the entire period and significantly (P≤0.05) from fifth to seventh week in biotox group. Content of milk protein (P≤0.05) in biotox group and percent of fat (P≤0.05), percent of lactose (P≤0.05), somatic cell count and concentration of aflatoxin M1 (P≤0.05) in control group were increased. Milk solids content in the biotox group increased non-significantly during the entire period andsignificantly in the fifth to seventh week (P≤0.05). There were no significant difference in concentration of plasma glucose, total protein and creatinine during the entire period, but in control group, creatinine level increased during the late period. Plasma aspartate transaminase (P≤0.05) and alanine aminotransferase (P≤0.05) were higher in the control group. Overall, biotox use improves the health, milk production, and production parameters of lactating cows when the feed is exposed to multiple mycotoxin contamination.
Vahab Azimzadeh; Mehdi Dehghan banadaky; armin tohidi; ali assadi-alamouti
Volume 22, Issue 1 , March 2020, , Pages 47-54
Abstract
Effect of different processing methods of corn grain were investigated in 36 Holstein suckling female calves (body weight = 38.2 ± 1.20 kg) on performance and blood and ruminal parameters. Treatments were whole corn, ground corn, cracked corn and steam-flaked corn. Starter diets were ...
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Effect of different processing methods of corn grain were investigated in 36 Holstein suckling female calves (body weight = 38.2 ± 1.20 kg) on performance and blood and ruminal parameters. Treatments were whole corn, ground corn, cracked corn and steam-flaked corn. Starter diets were mixed five percent of the chopped wheat straw and offered to calves from day 4. Milk was fed in a gradual step-up step-down method to all calves. Calves weaned at 71 days and total intake of starter and body weight of calves were measured until 84 days. Starter intake and ADG were significantly higher for cracked corn and steam-flaked corn than for ground corn and whole corn treatments in pre- and post-weaning and overall period (P≤0.01). At weaning and day 84, the average body weight of calves fed cracked corn and steam-flaked corn were significantly higher than those fed whole corn and ground corn treatments (P≤0.01). Treatments also affected serum protein of calves (P<0.05). According results of this study, feeding calves with cracked corn or steam-flaked corn increased feed intake and improved ADG and body weight through pre- and post-weaning periods.
Amirhossein Nasiri; Armin Towhidi; Malek Shakeri; Mehdi Zhandi; Mehdi Dehghan banadaky
Volume 20, Issue 2 , August 2018, , Pages 329-337
Abstract
The insulin resistance and glucose, insulin, IGF-1 metabolism (somatotropic axis performance) were investigated in cows to receive (4 g yeast/d/head) (Probio-Sacc®, BioChem, GmbH, Germany) or not receive live yeast supplement from 21 d before expected date of calving under the hot months of summer ...
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The insulin resistance and glucose, insulin, IGF-1 metabolism (somatotropic axis performance) were investigated in cows to receive (4 g yeast/d/head) (Probio-Sacc®, BioChem, GmbH, Germany) or not receive live yeast supplement from 21 d before expected date of calving under the hot months of summer (THI = 82). Two groups of 6 periparturient Holstein cows were fed a diet without or with 4 g yeast/d/head (15*109 CFU/g) starting 21 d prepartum through 8 weeks postpartum to investigate the changes of blood concentrations of glucose, insulin, IGF-1 and glucose tolerance test (GTT). On d 60 postpartum, greater blood levels of glucose, insulin and insulin-like growth factor I were found in cows receiving yeast supplement than those receiving no yeast (P<0/05). Probiotic had not significant effect on GTT test. Overall, it appears that Probiotics would beneficially improve the blood concentrations of glucose, insulin, IGF-1 in day 60 postpartum (on DFS day) and improve somatotropic axis of dairy cows during the heat stress. Probiosac probiotic had positive effects on somatotropic axis and animal performance. It’s can be a good solution to increase dairy cow’s performance in heat stress condition.
zabih allah abdolmaleki; Manouchehr Souri; mohamad mehdi moeini; armin towhidi; Yadollah Chashnidel
Volume 19, Issue 4 , March 2018, , Pages 829-845
Abstract
Forty multiparous Holstein cows were used to investigate the effect of supplementary rumen protected Conjugated linoleic Acid (CLA) with injectable Se and vitamin E (E-Se) supplement on immune system in Holstein cows and their calve in a commercial dairy farm at Ghazvin province. The animals were divided ...
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Forty multiparous Holstein cows were used to investigate the effect of supplementary rumen protected Conjugated linoleic Acid (CLA) with injectable Se and vitamin E (E-Se) supplement on immune system in Holstein cows and their calve in a commercial dairy farm at Ghazvin province. The animals were divided in four experimental groups in a complete randomize design based on factorial. The experimental groups were: basal diet (Control), basal diet plus injectable E-Se Supplement, basal diet plus CLA 100 g/day per each cow) and basal diet plus CLA 100 g/day per each cow and Injectable E-Se Supplement. The dose of injectable E-Se supplement was 40 ml/cow. The injection has done muscularly in each cow in days, -21, 1, 14, 28 and 42 after calving. Blood Samples of cows collected at days of injection. Blood samples of calves collected at birthday pre feeding colostrum and 7 days after birth. The result showed CLA supplement had no significantly effect on mean concentration of Immunoglobulin G (IgG), Total antioxidant status (TAS) and Malondialdehyde (MDA) in calves on days 1 and 7 (P>0.05). Effect of injectable E-Se Supplement on TAS concentration of Calve's Plasma had was significant (P>.05). CLA and injectable E-Se Supplements had no significant effect on mean concentration of IgG, TAS and MDA of cow`s colostrum (P>0.05). The CLA and E-Se supplements had no significant effect on TAS concentration and hematology Parameters of dairy cow (P>0.05). Based on acquried result use of CLA supplement in transition period had no effect on immune system of cows and their calves. Supplementary injection of E-Se significantly improved total antioxidant status of newborn calves.
Seyyed Mojtaba Mousavi; Armin Tohidi; Mehdi Zhandi; Abdollah Mohammadi-Sangcheshmeh; Ghasem Amou-abediny
Volume 18, Issue 3 , October 2016, , Pages 593-601
Abstract
The effect of osmolarity and glycerol different levels in soybean lecithin-based extender on the bull sperm quality after cryopreservation was examined using six Holstein bulls in a 2 × 3 factorial trial based on completely randomized design, with three levels of osmolarity (250, 300 and 350 mOsml) ...
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The effect of osmolarity and glycerol different levels in soybean lecithin-based extender on the bull sperm quality after cryopreservation was examined using six Holstein bulls in a 2 × 3 factorial trial based on completely randomized design, with three levels of osmolarity (250, 300 and 350 mOsml) and two levels of glycerol (5 and 7 %) .In general, semen samples were collected 36 times (from each bull, six times). After the initial evaluation of semen, samples were mixed together and assigned to each of treatments. After freezing and thawing process, parameters that were evaluated including; motion characteristics by CASA, viability, plasma membrane integrity and morphology. The results showed that frozen-thawed sperm in treatment of G7P300 had higher values than the other groups for total motility (69.50 %), progressive motility (48.89 %), lateral head displacement (3.69 µm/s), curvilinear velocity (168.80 µm/s) and straightness coefficient (61.89 %) (P≤0.05). In the treatments containing seven and five percent of glycerol and osmotic pressure of 350 mOsml, plasma membrane integrity (23.14 and 25.63 %, respectively) and sperm viability (58.70 and 64.60 %, respectively) were lower compared to other treatments (P≤0.05). But, in terms of morphology, G7P350 (92.34 %) and G5P350 (92.57 %) treatments were better than other treatments. The results of these experiment showed that the extender contained of seven percentage of glycerol with osmalarity of 300 or 250 mOsml was more efficient for cryopreservation of Holstein bull sperm.
Mola Mohammadi-Arekhlo; Armin Towhidi; Hossein Moravej; Ahmad Zare Shahaneh
Volume 18, Issue 2 , June 2016, , Pages 359-366
Abstract
The purpose of this study was to evaluate the effect of Zilpaterol hydrochloride on the growth performance, carcass quality and blood parameters with128 male quails at 26 days of age were divided into four treatments which each treatment consists of four replicates of 8 birds. The birds received daily ...
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The purpose of this study was to evaluate the effect of Zilpaterol hydrochloride on the growth performance, carcass quality and blood parameters with128 male quails at 26 days of age were divided into four treatments which each treatment consists of four replicates of 8 birds. The birds received daily 0, 0.2, 0.225, or 0.25 mg/kg of live weight d−1zilpaterol. After three days of withdrawing zilpaterol, two birds were slaughtered for carcass evaluation. Results showed that zilpaterol hydrochloride supplementation improved feed conversion ratio (FCR) (P<0.5), but no effect on feed intake and weight gain. Also, zilpaterol hydrochloride increased the glucose and triglyceride concentration of plasma in comparison to treatment control (P<0.5). However, zilpaterol had no effect on carcass chemical composition (crude protein, fat, cholesterol). Furthermore, carcass weight and percentage of leg, breast, liver and abdominal fat was not affected in the treatment which were feeding zilpaterolhydrochloride. It can be concluded that Zilpaterol hydrochloride improved the FCR in Japanese Quails
Hamed Kermani Moakhar; Saeed Zeinoldini; Armin Towhidi; Hamid Kohram
Volume 18, Issue 2 , June 2016, , Pages 387-395
Abstract
Using melatoninin ewes of Iran black breed, this study aimed to compare the reproduction and production performances in lambing program of two and three times per years for duration of two years. A hundred ewes allocated to two parallel groups: Group A (ewes in three lambing managing system using melatonin) ...
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Using melatoninin ewes of Iran black breed, this study aimed to compare the reproduction and production performances in lambing program of two and three times per years for duration of two years. A hundred ewes allocated to two parallel groups: Group A (ewes in three lambing managing system using melatonin) and Group B (ewes in two lambing managing system without using melatonin). To induce the estrus synchronization of ewes of Group A, 40 days before their first and second mating, melatonin implant was placed under the ear skin of these animals. Due to the decrease of birth interval in Group A, ewes of this group were dried off two weeks before mating. The nutritional flushing and ram effect were used to improve the ovulation rate in Groups of A and B, before mating. Reproduction and production parameters including estrus, ovulation, pregnancy, lambing rates and lambs weight were compared between two groups during two years. Our results indicated that the reproductive and productive performance of Group A was higher in first mating as compared to their second and third mating. The ovulation, pregnancy, lambing rate and lambs weight during two year was higher in Group A in comparison to Group B. Collectively, our findings indicated that the ewe's production and reproduction performance in three lambing managing system with the use of melatonin were more efficient compared to the ewes in two lambing managing system without using melatonin.
Hamed Kermani Moakhar; Armin Towhidi; Saeed Zeinoldini; Hamid Kohram
Volume 18, Issue 1 , April 2016, , Pages 191-200
Abstract
The aim of this study was to evaluate the effect of glycogenic diets supplemented with different poly unsaturated fatty acids on reproductive performance of Iran Black ewes in two different managing programs. Ewes were allocated in two different groups; group A (n = 75) and group B (n = 25). Ewes from ...
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The aim of this study was to evaluate the effect of glycogenic diets supplemented with different poly unsaturated fatty acids on reproductive performance of Iran Black ewes in two different managing programs. Ewes were allocated in two different groups; group A (n = 75) and group B (n = 25). Ewes from group A were stopped from suckling followed by introducing to the rams on days 80 and 90, respectively. Melatonin implant was laid under the skins ear of these ewes 40 days before introducing them to the rams. Animals from group A were divided into three groups (25 ewes/sub-group) and were fed by high starch diets supplemented with saturated fatty acids (control diet), extruded linseed (omega 3 diet), and full fat soybean (omega 6 diet). Ewes from group B were stopped from suckling on day 120, introduced to the rams on day 180 after parturition and fed as described for the control diet. Data for the rates of Estrus cycle, ovulation, lambing and twining were recorded for each group. The weight of lambs was measured at the birth time of birth, and also at 3 and 4 months of age. The lambing and twining rates were higher in omega 3 and omega 6 diets as compared with the control diet and group B. Animals in group B indicated a higher lamb weight at 3 and 4 months of age compared to all treatments in group A. In conclusion, data from current study suggested that using management program of group A along with feeding omega 3 and 6 could improve the reproductive performance of Iran Black ewes.