پردیس کشاورزی و منابع طبیعی دانشگاه تهران
Iranian Journal of animal Science
2008-4773
2423-7949
45
1
2014
04
21
The effect of different levels of Vitamin E in semen extender during the cooling on Caspian stallion sperm quality
1
8
FA
Iman
Yousefian
Postgraduate Student, University College of Agriculture & Natural resources, University of Tehran, Karaj, Iran
yousefian.iman@ut.ac.ir
Ahmad
Zare-shahneh
Professor, University College of Agriculture & Natural resources, University of Tehran, Karaj, Iran
azareh@ut.ac.ir
Mahdi
Zhandi
0000-0003-2886-9747
Assistant Professor, University College of Agriculture & Natural resources, University of Tehran, Karaj, Iran
mzhandi@ut.ac.ir
Majid
Bahreini
Professional Doctorate, National Animal Breeding Center and Promotion of Animal Products, Iran
iman.yoosefiyan@gmail.com
Ghazaleh
Izadpanah
Postgraduate Student, University College of Agriculture & Natural resources, University of Tehran, Karaj, Iran
izadpanahghazal@yahoo.com
Reza
Noei
Postgraduate Student, University College of Agriculture & Natural resources, University of Tehran, Karaj, Iran
rezanoei@ut.ac.ir
Mojtaba
Emamverdi
Postgraduate Student, University College of Agriculture & Natural resources, University of Tehran, Karaj, Iran
emamverdi@ut.ac.ir
10.22059/ijas.2014.51743
The purpose of this study was to determine the effects of different concentrations of vitamin E (Vit. E) in the quality of preserved stallion semen at 5<sup>ᵒ</sup>C for a period of 48 h. Semen was collected and most (≥90%) seminal plasma removed by centrifugation at 600 × g. Pooled samples divided in four equal parts and diluted with extenders that was supplemented with different concentrations of Vit. E [(0 (control, C), 5 and 10 mM)] and DMSO positive control group [as vitamin E solvent, (DC)] to a final concentration of 50 × 10<sup>6</sup> sperm/ml. Motility, viability, plasma membrane integrity, total abnormality and lipid peroxidation were determined at 0, 6, 24 and 48h. The results showed that 5mM vitamin E resulted in higher viability and plasma membrane integrity compared to control after 48 h of storage (P<0.05). Different concentrations of vitamin E had no significant effects on sperm motility and total abnormality compared to C and DC extender (P>0.05). Also, 5mM Vit. E was decreased lipid peroxidation compared C and DC extenders after 48h of storage (P<0.05). In conclusion, between above-mentioned different concentrations, 5mM Vit. E could improve Caspian stallion sperm quality during cooled-storage at 5<sup>°</sup>C.
Caspian stallion semen,Cooling,Lipid Peroxidation,Sperm quality,vitamin E
https://ijas.ut.ac.ir/article_51743.html
https://ijas.ut.ac.ir/article_51743_d3b3b74cd12ce2eea70af0bfad14ba6c.pdf
پردیس کشاورزی و منابع طبیعی دانشگاه تهران
Iranian Journal of animal Science
2008-4773
2423-7949
45
1
2014
04
21
Determination of the impact of some factors on genotype imputation error rates for genome wide association studies in dairy cattle
9
15
FA
Mohammad
Sahebhonar
PhD Candidate, University College of Agriculture & Natural Resources, University of Tehran, Karaj, Iran
msahebhonar@ut.ac.ir
Mohammad
Moradi Shahrbabak
0000-0003-1560-7641
Professor, University College of Agriculture & Natural Resources, University of Tehran, Karaj, Iran
moradim@ut.ac.ir
Seyed Reza
Miraei Ashtiani
0000-0003-3597-4385
Professor, University College of Agriculture & Natural Resources, University of Tehran, Karaj, Iran
ashtiani@ut.ac.ir
Abbas
Pakdel
Associate Professor, University College of Agriculture & Natural Resources, University of Tehran, Karaj, Iran
pakdel@cc.iut.ac.ir
Dorian
J. Garrick
Professor, Department of Animal Science, Iowa State University, Ames, USA.
dorian@iastate.edu
10.22059/ijas.2014.51744
In this study, effect of two genotype imputation strategies, relatedness between reference panel and test populations and minor allele frequency on imputation error rate were examined with using a stochastic simulated population. Reference panel and test populations were composed of 1,000 and 500 individuals, respectively. Individuals in the reference panel were genotyped with using a high and a medium density chips. The high density chip contained 75,000 SNPs plus QTLs. The medium density chip contained 7,500 SNPs. Individuals in the test populations were genotyped with using a low density chip with 500 SNPs. Two strategies were applied for genotype imputation. In 2-tiered strategy, genotypes of low density chip were directly imputed from high density chip. In 3-tiered strategy, genotypes of low density chip were imputed from high density chip with using a medium density chip. In order to impute genotypes, BEAGLE method was used. Correlation between imputation error rate and minor allele frequency showed that imputation error rate was affected by minor allele frequency in both strategies. Imputation error rates were decreased when using a medium density chip to predict genotypes of low density chip. Closer relationship between reference panel and test populations led to a higher accuracy.
genotype imputation,high density chip,minor allele frequency,simulation
https://ijas.ut.ac.ir/article_51744.html
https://ijas.ut.ac.ir/article_51744_e30944c9a5e4ed36a50d1eb6dc6c2f7e.pdf
پردیس کشاورزی و منابع طبیعی دانشگاه تهران
Iranian Journal of animal Science
2008-4773
2423-7949
45
1
2014
04
21
Comparison of nutrients and cost-income from two alfalfa harvesting methods (hay or silage)
17
25
FA
Davood
Zahmatkesh
PhD Candidate
zahmatkesh@znu.ac.ir
Hamid
Amanlou
0000-0002-5631-125X
Professor at university of Zanjan
amanlou@znu.ac.ir
Ghader
Dashti
Associate Professor
ghdashti@yahoo.com
10.22059/ijas.2014.51745
This study was conducted to evaluate consumption inputs, production costs, nutrient composition and performance in production of alfalfa hay and alfalfa silage. Therefore, data on alfalfa hay production were collected from 75 farms in Zanjan province, using a face to face questionnaire in the year 2012. A systematic random sampling method was used. Then, two farms managed by silage harvesting system and all data were recorded. Data on 75 farms for alfalfa silage production estimated based on data obtained. The benefit-cost ratios from alfalfa hay and alfalfa silage productions were to be 1.20 and 1.44, respectively. Total cost of production was calculated as 5874.83 and 4899.26 Rials per Kg for alfalfa hay and alfalfa silage, respectively. The crude protein yield of alfalfa hay and alfalfa silage productions were calculated as 955.42 and 1338.73 Kg ha<sup>-1</sup>, respectively. Cost of energy types (NE<sub>L3X</sub>, NE<sub>L4X</sub>) for alfalfa hay was higher than alfalfa silage. The results indicated alfalfa silage production was more profitable.
cost of production,forge,input consumption,Nutrients
https://ijas.ut.ac.ir/article_51745.html
https://ijas.ut.ac.ir/article_51745_64940a20c55157ab1b9660107a2016a2.pdf
پردیس کشاورزی و منابع طبیعی دانشگاه تهران
Iranian Journal of animal Science
2008-4773
2423-7949
45
1
2014
04
21
Genetic analysis of milk yield and open days traits of Holstein dairy cattle in Iran for first five lactation
27
36
FA
Hossein
Mehrban
Assistance Professor Department of Animal Science, University of Shahrekord,
Shahrekord, Iran
hosseinmehrban@gmail.com
Seyyed Mehdi
Esmaeilifard
0000-0000-0000-0000
PhD Candidate, Genetics and Animal Breeding, Department of Animal Science, Agricultural Sciences & Natural Resources University of Sari, Mazandaran, Iran
mehdi.esmaeilifard@gmail.com
Mojtaba
Najafi
PhD Candidate, Genetics and Animal Breeding, Department of Animal Science, Agricultural Sciences & Natural Resources University of Sari, Mazandaran, Iran
mojtaba_najafy@yahoo.com
Bita
Abbasi mashaei
PhD Candidate, Genetics and Animal Breeding, Department of Animal Science, Agricultural Sciences & Natural Resources University of Sari, Mazandaran, Iran
abbasi_bita@yahoo.com
Ebrahim
Asadi-Khashoei
Assistance Professor
ebrahimasadi@yahoo.com
10.22059/ijas.2014.51746
A data file containing 607662 (317608) milk (open days) records belonging 294417 (177838) Holstein cows that were calved from 1983 to 2008 was used. The bivariate repeatability model was used for data analyzing so that herd, calving year, calving month, days in milk (only for milk trait) and calving age for each parity, were assumed as fixed effects and additive genetics and permanent environmental effects were considered as random. Phenotypic (genotypic) trends were estimate based on mean of phenotypic values (breeding values) on birth year by simple (segmented) regression. Heritability and repeatability for milk yield (open days) were obtained 0.20 (0.054) and 0.42 (0.120), respectively. Phenotypic trend of milk yield was 116.65 Kg per year (P<0.05) but open days wasn’t followed any trend (P>0.05). Genetic trend of milk yield before 1996 was estimated -4.15 per year (P>0.05), but after 1996 milk yield has uptrend and was observed 43.74 Kg per year (P<0.05). Genetic trend of open days before 1996 wasn’t significant, but after 1996 genetic trend of this trait was estimated 0.36 day per year (P<0.05). Phonotypic correlation between these two traits was low but positive (0.041) and genetic correlation estimated 0.46 that shows more open days for high productive cows. Genetic correlation compared to the phenotypic correlation explains that the strong relationship between these traits was covered by environmental effects. According to the results of this study, it is suggested to pay more attention to the reproductive traits in addition to productive traits in breeding programs.
genetic correlation,genetic trend,Holstein cows,milk yield,open days
https://ijas.ut.ac.ir/article_51746.html
https://ijas.ut.ac.ir/article_51746_a65c7d11901d4611a5d98bd68ca662d7.pdf
پردیس کشاورزی و منابع طبیعی دانشگاه تهران
Iranian Journal of animal Science
2008-4773
2423-7949
45
1
2014
04
21
Effect of different levels of vitamin C on queen laying rate and body protein percentage of worker in honey bee colonies (Apis mellifera L.)
37
42
FA
Ardeshir
Ahmadi
MSc., Islamin Azad University, Branch of Sannandaj, Iran
ijhs@can.ut.ac.ir
Gholamali
Nehzati-paghale
0000-0001-6405-6482
Assistance Professor, Agricultural Sciences & Natural Resources University of Tehran, Karaj, Iran
nehzati@ut.ac.ir
Mohammad
Amiri Zandi
Assistance Professor, Islamin Azad University, Branch of Sannandaj, Iran
ijpps@can.ut.ac.ir
Saeed
Abbasi
MSc. Student, Agricultural Sciences & Natural Resources University of Tehran, Karaj, Iran
m.po.125521@gmail.com
10.22059/ijas.2014.51747
Role of vitamins in bee nutrition is very important especially in case of supplemental feeding with sugar and pollen substitutes. In this experiment effects of different levels of vitamin C on the rate of queen lying and workers body protein were studied. Experimental colonies had the same age queens and the same population (5 frames). This study was held at April and July 2011 in three levels of vitamin C (2000, 4000 and 6000 ppm) with sugar syrup (50%) while the control group fed syrup without vitamin C for 45 days. Results of statistical analysis showed that between treatments in terms of queen lying was significantly different (P<0.05). The highest laying rate observed in treatment with 2000 ppm vitamin C and the lowest observed in control group with 9049, 4848cm<sup>2</sup>, respectively. Also, average percent of workers body protein fed by different levels of vitamin C showed that treatments are significantly different (P<0.05). The highest percent of protein was in treatment with 2000 ppm (57.45 percent) while the lowest was in treatment 4000 ppm (47.50 percent). According to our results adding of vitamin C (2000 ppm) to syrup, could increase rate of queen lying and the workers body protein.
body protein,Honeybee,queen lying,vitamin c
https://ijas.ut.ac.ir/article_51747.html
https://ijas.ut.ac.ir/article_51747_5fffb22d74688718eee9a25d65d5fdbe.pdf
پردیس کشاورزی و منابع طبیعی دانشگاه تهران
Iranian Journal of animal Science
2008-4773
2423-7949
45
1
2014
04
21
The effects of propolis and monensin in milk on performance, feed intake and digestibility in Holstein suckling calves
43
50
FA
Peyman
Paravian
MSc., Agricultural Sciences & Natural Resources University of Tehran, Karaj, Iran
ijhs@can.ut.ac.ir
Gholamali
Nehzati
Assistance Professor, Agricultural Sciences & Natural Resources University of Tehran, Karaj, Iran
ijpps@can.ut.ac.ir
kamran
Reza-yazdi
0000-0002-1835-8612
Associate Professor, Agricultural Sciences & Natural Resources University of Tehran, Karaj, Iran
rezayazdi@ut.ac.ir
Mahdi
Dehghan
0000-0001-8448-1371
Associate Professor, Agricultural Sciences & Natural Resources University of Tehran, Karaj, Iran
dehghanb@ut.ac.ir
10.22059/ijas.2014.51748
In order to surveying the effect of feeding propolis on performance, feed intake and digestibility in Holstein suckling calves, the experiment was designed in a completely randomized design with 4 treatments (diet) and 10 replicates (cattle) during 52 days. Treatments included: 1. Control (without monensin in starter and without propolis in milk); 2. Starter without monensin and 500 ppm soluble propolis powder in milk; 3. Starter without monensin and 1000 ppm soluble propolis powder in milk; and 4. Monensin in starter and without propolis in milk. Statistical analysis was done with SAS software and PROC MIXED and GLM. There was significant difference between treatments for means body weight during suckling (P<0.05) and whole period (suckling and after suckling) (P<0.01). Treatment 3 had the highest and treatment 2 had the lowest body weight. The wither height in treatment 3 had significant difference with other groups (P<0.01). Both treatment 3 and 2 had the highest wither height in order. There was significant difference between treatments for dry matter intake both in whole period and after suckling (P<0.05). In whole period treatment 1 had the highest and treatment 4 had the lowest dry matter intake. There was no significant discrepancy in terms of feed efficiency and digestibility of dry matter, organic matter and neutral detergent fiber. According to positive effect of propolis (biological antibiotic) on the performance of calves in compare of monensin (synthetic antibiotic), it is recommended to use 1000 ppm propolis in per kg milk in suckling calves.
monensin,performance,propolis powder,Suckling calves
https://ijas.ut.ac.ir/article_51748.html
https://ijas.ut.ac.ir/article_51748_24654b42605d28daaae7ad5a0234fd38.pdf
پردیس کشاورزی و منابع طبیعی دانشگاه تهران
Iranian Journal of animal Science
2008-4773
2423-7949
45
1
2014
04
21
Factors associated with mortality from birth to yearling age in Moghani lambs
51
58
FA
Hamed
Rezaei
MSc. Student, University College of Agriculture & Natural Resources, University of Tehran, Karaj, Iran
ijhs@can.ut.ac.ir
Hosein
Moradi Shahrbabak
0000-0002-6680-7662
Associate Professor, University College of Agriculture & Natural Resources, University of Tehran, Karaj, Iran
hmoradis@ut.ac.ir
Mohammad
Moradi Shahrbabak
0000-0003-1560-7641
Professor, University College of Agriculture & Natural Resources, University of Tehran, Karaj, Iran
moradim@ut.ac.ir
Mahdi
Bayeriyar
مربی، دانشگاه آزاد اسلامی واحد شهر بابک
ijpps@can.ut.ac.ir
10.22059/ijas.2014.51749
The data used in this research were according to survival rate records of 9700 lambs from 735 rams and 8082 ewes, which collected at Moghani Flock Breeding Research Station during the year 1365 to 1390. The frequency distribution causes of culling and survival distribution function of lambs to yearling age were estimated by SAS (2000). Results revealed that 49.81 percent of total lambs were culled from the flock until the first year of life because of reasons including illness, lack of breed purity, etc. The mortality rate over this period was estimated 20.81 percent which occurred 8.03, 7.5, 4.43 and 0.85 percent in first three months, second three months, third three months and fourth three months of lambs life, respectively. According to percentage of mortality rate, the accumulative survival of lambs from birth to yearling age was calculated 79.19 percent. The regression coefficient of lambs survival from birth up to yearling age showed a monthly 1.77 percent decrease in lambs survival of this breed. The most mortality rate occurred in first, fifth, second, fourth, sixth and ninth months of lambs life, respectively. In comparison with third and fourth three months of lambs life, the fatality in first and second three months were higher because of heavy rainfall and frigid weather in winter quarters.
lambs moghani,Longevity,Mortality,Survival
https://ijas.ut.ac.ir/article_51749.html
https://ijas.ut.ac.ir/article_51749_ef7881a75d18a06e6e3f69194eb2cdbc.pdf
پردیس کشاورزی و منابع طبیعی دانشگاه تهران
Iranian Journal of animal Science
2008-4773
2423-7949
45
1
2014
04
21
Modeling the lactation curve of Holstein dairy cows using the Sine function and comparing it with Dijekstra and Wood’s functions in a herd of Holstein dairy cow
59
68
FA
Somayyeh
Lotfi
PhD student, Department of Applied Mathematics, Faculty of Mathematics, University of Guilan, Rasht, Iran.
ijhs@can.ut.ac.ir
Reza
Lotfi
PhD student, Department of Animal Science, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Iran.
rezalotfi2007@yahoo.com
Ali
Vahidian Kamyad
Professor, Department of Applied Mathematics, Faculty of Mathematics, Ferdowsi University of Mashhad, Mashhad, Iran.
ijpps@can.ut.ac.ir
Homayoun
Farhangfar
Professor, Department of Animal Science, Faculty of Agriculture, University of Birjand, Birjand, Iran
ijasc@yahoo.com
10.22059/ijas.2014.51750
Description of lactation curve were investigated using sine function, compare it with two functions (Dijekstra and Wood). The data contained 32233 dairy milk yield records from 93 first parity Iranian Holstein cows that had calving between Aug. 2008 and Jul. 2009. Actual milk production per day and subsequently the actual production of each animal were available in the first lactation. Lactation records of milk production per cow from 7 until the end of lactation was used for the study. The data was fitted by the Trust-Region method in MATLAB software. The models were tested for goodness of fit using sum of squares error (SSE), root mean square error (RMSE) and coefficient of determination (R-square). Also expression for the feautures of the lactation curve were calculated by using mathematical’s formulaes. Goodness of fit and lactation features of models was subjected to analysis using the MIXED procedure of SAS (2001) that the random effect was effect of cow. The results showed that Sine function can be fitted to daily milk production records. Statistical analysis showed that significant differences exist between the goodness of models (P< 0.01) and the best fitting was related to the Sine and Wood function. The random effect of cow was also significant (P< 0.01) that reflects the variable response of each animal to each model. Numerically, all the estimated features of the lactation curve given by the Sine function were similar to Dijkstra and Wood functions. The results showed simple Sine function has high competence and ability to fit the daily records of milk production. Also, Sine function could describe the persistency of lactation much better than the other models. Biologically, the parameters of Sin function were acceptable and showed some part of lactation curve but all three functions couldn’t fit the first 30 days of lactation in the best way.
Holstein cows,lactation curve,Sine function,test day records
https://ijas.ut.ac.ir/article_51750.html
https://ijas.ut.ac.ir/article_51750_b4e99b1cbf4eedb394a71ca7c7957b35.pdf
پردیس کشاورزی و منابع طبیعی دانشگاه تهران
Iranian Journal of animal Science
2008-4773
2423-7949
45
1
2014
04
21
Effect of neutral detergent soluble carbohydrate source and addition roasted canola seed on growth performance and nutrient digestibility of lambs fed high concentrate diets
69
79
FA
Sadegh
Asadollahi
PhD Candidate, Department of Animal Science, Ramin Agriculture and Natural Resources University of Khuzestan, Iran
sadg102@yahoo.com
Mohsen
Sari
0000-0001-7517-6711
Assistant Professor, Department of Animal Science, Raimn Agriculture and Natural Resources University of Khuzestan, Iran
mohsensari@gmail.com
Naeem
Erfanimajed
Professor, Department of Basic Sciences, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
naeemalbo@yahoo.com
Morteza
Chaji
0000-0002-9336-4094
Assistant Professor, Department of Animal Science, Raimn Agriculture and Natural Resources University of Khuzestan, Iran
mortezachaji@yahoo.com
Morteza
Mamouei
Associate Professor, Department of Animal Science, Raimn Agriculture and Natural Resources University of Khuzestan, Iran
mamouei_m@yahoo.com
10.22059/ijas.2014.51751
In order to investigate the effect of partial replacement of barley starch with beet pulp soluble fiber with or without roasted canola seed on apparent nutrient digestibility, dry matter intake, daily weight gain, feed conversion ratio and rumenal pH 24 Arabian male lambs were used for 84 days in a completely randomized design with a 2×2 factorial arrangement. Treatments had no significant effect on the dry matter intake, feed conversion ratio, and apparent digestibility of protein and organic matter (P>0.05). High starch diets compared with high soluble fiber diets caused a significant decrease in the digestibility of DM, OM, ADF and NDF (P<0.01). Canola seed addition significantly decreased ADF and NDF digestibilities (P<0.01). The carbohydrate source by canola seed interaction was significant for daily weight gain and rumen pH (P<0.01) indicating that addition of canola seed to high starch diet increased daily weight gain and rumen pH more dramatically in comparison with diet containing soluble fiber (P<0.01). It is concluded that partial replacement of starch with soluble fiber and addition of canola seed to these diets could have positive effects on growth performance, nutrient digestibility and rumen pH.
Fattening lamb,neutral detergent soluble carbohydrate source,performance,roasted canola seed
https://ijas.ut.ac.ir/article_51751.html
https://ijas.ut.ac.ir/article_51751_7d17b417b9386bcb2082ce8994e373c8.pdf
پردیس کشاورزی و منابع طبیعی دانشگاه تهران
Iranian Journal of animal Science
2008-4773
2423-7949
45
1
2014
04
21
Effect of ensiled urea treated apple pomace on performance and carcass characteristics of Ghezel lambs
81
88
FA
Ali Saleh
Bahmanpour
MSc., Agricultural University of Shiraz, Shiraz, Iran
ijhs@can.ut.ac.ir
Alireza
Bayat
Assistance Professor, Agricultural University of Shiraz, Shiraz, Iran
ijpps@can.ut.ac.ir
Mohammad
Dadpasand
Assistance Professor, Agricultural University of Shiraz, Shiraz, Iran
dadpasand@shirazu.ac.ir
Mohammad-Javad
Zamiri
Professor, Agricultural University of Shiraz, Shiraz, Iran
ijasc@yahoo.com
10.22059/ijas.2014.51752
The effects of different levels (0, 10, 20 and 30 percentage of dry matter) of apple pomace ensiled with urea were investigated on 24 Ghezel male lambs in a completely randomized design with four treatments and six replicates. The average starting weight and age of the lambs were 31.27 ± 7.40 and 187 ± 37 days, respectively. After 15 days of adaptation, the lambs were individually fed with experimental diets for 70 days. Daily feed intake was measured individually and the lambs were weighted at the beginning and the end of the experiment after an overnight feed and water withdrawal. Average daily gain and feed intake, and feed conversion ratio were calculated. At the end of the experiment, lambs were slaughtered and the warm and cold carcass and other cuts were weighed. There were no significant differences among treatments in term of average daily gain, dry matter intake, feed conversion ratio, warm and cold dressing percentage. Percentage of internal organs fat was not statistically different among the treatments. The results showed that, including apple pomace ensiled with urea into the diet of fattening Ghezel male lambs is recommendable as a replacement for alfalafa hay.
apple pomace silage,carcass characteristics,Ghezel lambs,growth performance
https://ijas.ut.ac.ir/article_51752.html
https://ijas.ut.ac.ir/article_51752_6574cd5b044ae0fe751a1bcf496b7e90.pdf