Sari Agricultural Science and Natural Resources University
Research On Animal Production
2251-8622
2676-461X
4
8
2014
2
1
Effect of Dietary Protein Level During Grower and Layer Periods on the Performance and Egg Quality of Japanese Quail
1
11
FA
Behrouz
Dastar
Gorgan University of Agricultural Sciences and Natural Resources
Y
Mashalla
Rahimi Ratki
Gorgan University of Agricultural Sciences and Natural Resources
N
Hadi
Gholami
Gorgan University of Agricultural Sciences and Natural Resources
N
This experiment was conducted in order to investigate the effect of dietary protein level during grower (1 to 35 days) and laying (35 to 77 days) periods on the performance and egg quality in Japanese quail. A number of 360 Japanese quails were divided to 4 groups and fed diets varying in dietary protein (20, 22, 24 and 26% CP) from 1 to 35 days of age. After 35 days, each of the groups were divided to 3 sub groups and fed with diets containing 18, 20 and 22% CP up to 77 days of age. Results of experiment indicated that quails were fed diet containing 24% CP had lowest feed conversion ratio that it differences was significant with those were fed 22% CP (P<0.05). Quails were fed diet containing 22% CP during laying period had significantly higher egg weight than those groups were fed diets containing 20 and 18% CP (P<0.05). Results related to egg quality indicated yolk color in quails fed 18% CP during laying period was significantly higher than groups fed with 20 and 22% CP
(P <0.05).
Japanese quail, Protein, Layer, Egg quality
http://rap.sanru.ac.ir/article-1-283-en.html
http://rap.sanru.ac.ir/article-1-283-en.pdf
Sari Agricultural Science and Natural Resources University
Research On Animal Production
2251-8622
2676-461X
4
8
2014
2
1
Effect of Density of Protein and Time of Pre-Starter Feeding on Performance, Digestive System Development, Body Composition, Carcass Characteristics and Some Blood Parameters in Broiler Chicks
12
23
FA
Soheil
Yousefi
Sari Agricultural Sciences and Natural Resources University
Y
Mansour
Rezaei
Sari Agricultural Sciences and Natural Resources University
N
Zarbakht
Ansari Pirsaraii
Sari Agricultural Sciences and Natural Resources University
N
This study was conducted to investigate the effect of different levels of protein crude and pre-starter period feeding on performance, digestive system development, some blood parameters, body composition and carcass characteristics of broiler chicks. In this study, 276 one-day-old Ross 308 male broiler chicks was allocated to three treatments with 4 replicates and 23 chicks per replicate in a completely randomized design. Experimental treatments included treatment 1 (20.84 percent protein as basal diet), treatment 2 10% higher protein content than basal diet (22.92 percent) that was feeded for 5-day period and treatment 3 10% higher protein content than basal diet (22.92 percent) that was feeded for 7-day period. In all treatments, metabolizable energy content was similar (2900 kcal /kg). Results indicated that there was not significant differences among treatment for performance and carcass characteristics. Also there were not significant differences among treatments for liver, spleen and burs fabresius percentage. There were significant differences among treatments for glucose in 21, triglycerides concentration in 21 and 42 days and HDL concentration in 21 day, as treatments 2 and 3 had higher values for these traits (p<0.05). There was significant differences among treatments for small intestine length in 14 day, as small intestine length had higher value in treatment 3 in comparison to other treatments (p<0.05). There were significant difference among treatments for body protein and dry matter in 42 day, as treatment 3 had higher protein and lower dry matter percentage (p<0.05). Results of this investigation showed that small intestine length and blood HDL, TG and glucose concentration and body protein percent increased via enhencing protein level in broiler pre-starter diet.
Pre-starter diet, Broiler, Performance, Carcass Characteristics
http://rap.sanru.ac.ir/article-1-284-en.html
http://rap.sanru.ac.ir/article-1-284-en.pdf
Sari Agricultural Science and Natural Resources University
Research On Animal Production
2251-8622
2676-461X
4
8
2014
2
1
The Effect of Starchy Source Digestion on Alfalfa Hay Digestibility by in Vivo and in Vitro Methods
24
34
FA
Mansour
Naderi Jabadraghi
University of Urmia
N
Rasool
Pirmohammadi
University of Urmia
Y
This study was conducted to evaluate the starchy feed effect (the wheat flour and the wheat starches grade1 and 2) on alfalfa hay digestibility using in vivo and in vitro methods. The in vivo experiment was achieved with 4 ruminally fistulated Makui sheep (BW, 43.20±1.2 kg) in a completely randomized design with a change over arrangement and the in vitro Telly and Terry experiment was conducted in a completely randomized design. In either experiment the DM and OM digestibility for mixed (starchy) rations was significantly higher than those of basal (alfalfa hay) ration, but the NDF digestibility of basal ration was higher than that of mixed ration. The rumen pH for alfalfa was the highest, and the lowest pH was obtained with the starch grade1 containing diet. The highest and the lowest correlation of regression equations were related to in vivo DM digestibility and the experimental mixed rations NDF digestibility, respectively. Results of this study showed that the starch grade 1 containing diet had a highest negative effect on the alfalfa hay fibre digestibility. Moreover, the regression equations may encompass better prediction of DM digestibility of mixed rations than that of the fibre digestibility.
Starchy feeds, Digestibility, In vivo, In vitro, NDF
http://rap.sanru.ac.ir/article-1-285-en.html
http://rap.sanru.ac.ir/article-1-285-en.pdf
Sari Agricultural Science and Natural Resources University
Research On Animal Production
2251-8622
2676-461X
4
8
2014
2
1
Effect of Varying Ruminally Degradable to Ruminally Undegradable Protein Ratios on Performance and Carcass Characteristics of Crossbred Male Lambs
35
45
FA
Mohamad Ali
Ramezani
Sari Agricultural Sciences and Natural Resources University
N
Yadollah
Chashnidel
Sari Agricultural Sciences and Natural Resources University
Y
Asadollah
Teimori Yansari
Sari Agricultural Sciences and Natural Resources University
N
Hamid
Deldar
Sari Agricultural Sciences and Natural Resources University
N
The influence of three levels of varying ruminally degradable to ruminally undegradable protein ratio 60: 40 (A), 65:35 (B) and 70: 30(C) on performance and carcass characteristics zel-sangssari male lambs was investigated. Twenty four lambs aged 6-7 months with an initial live weight of 29±2.5 kg were used. The animals were fed for a period of 95 days. The level of metabolisable energy was similar in all the rations (10.5 MJ /KgDM). Dry matter intake (DMI) was measured daily and live weight gain (LWG) was determined fortnightly. At the end of the trial, 50 percent of the animal were slaughtered to determine carcass characteristics quality. The data were statistically analyzed using completely randomized design with 3 diets (n=8). Mean values for the performance of the lambs for A, B and C rations were determine as follows: DMI 1.480, 1.510 and 1.500 Kg/day, LWG 173.2, 200.8 and 210.4 g/day, feed conversion efficiency 8.54, 7.39 and 7.58. There was not significant difference for the whole carcass weight, lean and fat percentage. In conclusion, the optimum performances of zel- sangssari male lambs were met with the ration containing 35% RUP.
Performance, Carcass caracteristics, Male lamb
http://rap.sanru.ac.ir/article-1-286-en.html
http://rap.sanru.ac.ir/article-1-286-en.pdf
Sari Agricultural Science and Natural Resources University
Research On Animal Production
2251-8622
2676-461X
4
8
2014
2
1
The Effect of Probiotic on Performance and Immunity Parameters of Broilers
46
56
FA
Yousef
Jafari Ahangari
Gorgan University of Agricultural Science and Natural Resources
Y
Bahman
Parizadian Kavan
Gorgan University of Agricultural Science and Natural Resources
N
Mehdi
Hoseinzadeh
Islamic Azad University, Ghaemshahr Branch
N
This experiment was carried out to investigate the effect of probiotic on performance and immunity parameters of broilers. This research was done in a completely randomized design with four treatments and four replications (14 chickens in each). A total of 224 Ross 308 one-day old broiler chicks were used. The rations supplied on the basis of NRC recommendations in periods of startrer, grower and finisher. At the end of experiment, one broiler from each pen with similar weight to mean weight of that pen was slaughtered to determine carcass characteristics. For blood collection, 3 broilers from each pen were selected and blood samples were collected in two stages of 28 and 35 days. The results showed that the body weight improved with the use of probiotic in periods of grower and finisher. Broilers fed with probiotic in periods of startrer, grower and finisher in comparison with the control group had a lower feed conversion ratio. The carcass yield, total gastrointestinal tract, pancreas weight and caeca length were significantly increased when probiotics were added in rations. Broilers fed with probiotic had lower abdominal fat (0.84) in comparison with the control group (1.8). In addition a significant decrease was observed in intestinal pH in broilers fed with probiotic. The use of probiotic significantly improved the titers of gumboro and newcastle in broilers. Therefore, it can be concluded that the supplementation of diet with probiotic has positive effects on performance and immune system of broilers.
Probiotic, Immune parameters, Performance, Broiler
http://rap.sanru.ac.ir/article-1-288-en.html
http://rap.sanru.ac.ir/article-1-288-en.pdf
Sari Agricultural Science and Natural Resources University
Research On Animal Production
2251-8622
2676-461X
4
8
2014
2
1
The Effect of Feeding of Bacterial Probiotic in Milk or Starter on Growth Performance, Health, Blood and Rumen Parameters of Suckling Calves
57
69
FA
Mohamad
Hosseinabadi
University of Tehran
N
Mehdi
Dehghan-Banadaky
University of Tehran
Y
Abolfazl
Zali
University of Tehran
N
In present study 30 female Holstein calves with average 40.4 kg birth weight were used from 14 until 65 days of age. Calves randomly divided to 3 treatments include: 1) bacterial probiotic (4×109 cfu/day) added to the starter 2) bacterial probiotic added to the milk replacer 3) Control, without microbial additive. Dry matter intake, Body weight gain, average daily gain feed efficiency, BUN and total plasma protein were not affected by treatments. Mean plasma glucose, fecal score and health status were affected by treatments. Apparent digestibility of DM, NDF and OM also pH and
N-NH3 concentration of rumen fluid between diets were not significant discrepancy. This study showed that addition of bacterial probiotic in starter decrease glucose concentration, addition bacterial probiotic in milk increase blood albumin and addition bacterial probiotic in starter or milk replacer improved health status and decrease fecal score.
Suckling calves, Bacterial probiotic, Growth performance, Blood and rumen parameter, Health status
http://rap.sanru.ac.ir/article-1-289-en.html
http://rap.sanru.ac.ir/article-1-289-en.pdf
Sari Agricultural Science and Natural Resources University
Research On Animal Production
2251-8622
2676-461X
4
8
2014
2
1
Number of Neurons Expresses Gonadotropin Releasing Hormone in the Hypothalamic Preoptic Area During the Phases of Estrous Cycle of Ewe
70
77
FA
Mohammad Reza
Jafarzadeh Shirazi
University of Shiraz
N
Amin
Tamadon
Transgenic Technology Research Center, Medical Sciences of Shiraz University
Y
In the present study number of neurons that express gonadotropin releasing hormone (GnRH) in the ewe preoptic area (POA) of hypothalamus were compared between the phases of estrous cycle. Hypothalamus of four ewe groups (n=3) of ovariectomized, proestrus, estrus, and luteal were removed after perfusion. The number of GnRH neurons in the POA of four groups was compared, using immunohistochemistry method. GnRH neurons were present in the POA of four groups of ewe. The mean of number of GnRH neurons in estrus ewes was more than ovariectomized ewes. However, there was not significant difference between the numbers of GnRH neurons of POA in three estrous phases. No difference for the number of neurons that express GnRH in the POA of hypothalamus during estrous phases of ewes might indicate that these relatively fixed number cells may perform the estrous cycle control only by control of GnRH release and changing of the secretion of GnRH.
Gonadotropin releasing hormone, Preoptic area, Estrous cycle, Ewe
http://rap.sanru.ac.ir/article-1-290-en.html
http://rap.sanru.ac.ir/article-1-290-en.pdf
Sari Agricultural Science and Natural Resources University
Research On Animal Production
2251-8622
2676-461X
4
8
2014
2
1
Detection of Susceptible and Resistant Allelic forms to Scrapie Disease in Prion Protein Locus in Iran Black and Arman Sheep Breeds
78
90
FA
Nouredin
Moradi
Sari Agricultural Sciences and Natural Resources University
Y
Ghodrat
Rahimi Mianji
Sari Agricultural Sciences and Natural Resources University
N
Hamid
Deldar
Sari Agricultural Sciences and Natural Resources University
N
Zoonotic diseases or transmittable diseases between humans and animals, both for economic and public health are very important. Scrapie is a deadly degenerative central nervous system disease that takes place in this category. Polymorphisms in sheep PrP gene are related to scrapie resistance and susceptibility. The aim of this study was to genotype the PrP locus in Iran Black and Arman sheep breeds. Blood samples were collected from 100 Iran Black and Arman sheep and DNA was extracted using the modified salting out method. A DNA fragment with the length of 173 bp from exon 3 of PrP gene was amplified with a specific primer pairs. Then the obtained genotypes for each sample were genetically evaluated by means of PCR-SSCP and sequencing techniques. In overall, four haplotype alleles of ARR, ARQ, AHQ, and ARH and five haplogenotype combinations of ARQ/ARQ, ARR/ARQ, ARR/ARR, ARQ/AHQ, and AHQ/ARH were detected in studied populations. The ARQ with the mean frequency of 74.5 percent and the ARQ/ARQ with the mean frequency of 59 percent were the most frequent haplotype allele and haplogenotype, respectively. The comparison of allele and genotype frequency between Iran Black and Arman sheep breeds were statistically significant (P<0.05). Based on the obtained results more than seventy percent of sheep genotyped in the present study was categorized in low resistant group (R3). Therefore, adopting the appropriate strategy in the selection and breeding programs can be effective to reduce the risk of the disease.
Polymorphism, PCR- SSCP, Scrapie, Arman, Iran Black
http://rap.sanru.ac.ir/article-1-291-en.html
http://rap.sanru.ac.ir/article-1-291-en.pdf
Sari Agricultural Science and Natural Resources University
Research On Animal Production
2251-8622
2676-461X
4
8
2014
2
1
Estimation of Genetic Parameters for Production and Reproduction Traits of Iranian Native Chickens using Bayesian Method Via Gibbs Sampling
91
99
FA
Amin
Yousefi Zonuz
University of Tabriz
Y
Sadegh
Alijani
University of Tabriz
N
Hosein
Mohammadi
University of Tabriz
N
The variance components and genetic parameters of body weight at 8 weeks of age, age at sexual maturity, egg weight and egg number of native fowls for three provinces: Mazandaran (1991 to 2010), Isfahan (1995 to 2011) and Yazd (2001 to 2010) were estimated based on data collected by the provincial native fowls breeding centers. Genetic parameters were estimated by six different animal models with Bayesian method based on Gibbs sampling technique using GIBBS3F90 software. For the test of significance of models, the Deviance information criteria were used. Fitting of additive genetic effect without considering maternal effects resulted in overestimation of direct heritability. Results showed that considerable part of phenotypic variance was attributed to maternal additive genetic effects. Estimated heritability for average egg weight, body weight at 8 weeks old, egg number and age at sexual maturity according to the appropriate model were 0.54, 0.23, 0.15 and 0.41 for Mazandaran center and 0.31, 0.12, 0.10 and 0.28 for Esfahan center and 0.33, 0.13, 0.16 and 0.19 for Yazd center, respectively.
Native Chickens, Reproductive and productive traits, Bayesian method, Heritability
http://rap.sanru.ac.ir/article-1-292-en.html
http://rap.sanru.ac.ir/article-1-292-en.pdf