Hamid Reza Ansari Ranani; Hamir Reza Baghershah
Volume 13, Issue 1 , September 2011, Pages 1-6
Abstract
This study was conducted to determine the effect of chemical methods for dewooling from skin on Moghani sheep skin and wool quality. Two treatments of sodium hydroxide (three and five percent) and two treatments of sodium sulfide (10 and 15 percent) rub to 100 skin and time spent to collect wool from ...
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This study was conducted to determine the effect of chemical methods for dewooling from skin on Moghani sheep skin and wool quality. Two treatments of sodium hydroxide (three and five percent) and two treatments of sodium sulfide (10 and 15 percent) rub to 100 skin and time spent to collect wool from skin surface, fibers staple length and diameter recorded. Dewooled skins at thin-cross stage were evaluated by three leather experts for hair follicle, shape, elasticity, flesh, softness, water absorbability, fineness, wrinkleless, thickness and footage loss. Results indicated that the time spent to collect wool from sodium sulfide treated skins was significantly (P< 0.05) lower than sodium hydroxide treated skins. Lowest and highest time for dewooling was (80.3 ± 4.1 minutes) and (180.3 ± 5.3 minutes) for skins treated with 15% sodium sulfide and three percent sodium hydroxide respectively. Quality score for skin treated with 10 and 15% sodium sulfide and three and five percent sodium hydroxide were 30.2 (± 0.1), 31.2 (± 0.5), 37 (± 0.5) and 35.8 (± 1.0), respectively. In general, skins treated with sodium hydroxide have better quality than skins treated with sodium sulfide.
Seyd Davoud Sharifi; Amin Dibamehr; Houshang Lotfollahian
Volume 13, Issue 1 , September 2011, Pages 7-16
Abstract
The effects of probiotics and antibiotics and fat type in diet on broiler performance were studied by using 900 one-day old Ross 308 chicks in a three × three factorial arrangement with three types of fat (nonfat, three percent fatty acid and three percent soy oil) and three growth promoters (without ...
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The effects of probiotics and antibiotics and fat type in diet on broiler performance were studied by using 900 one-day old Ross 308 chicks in a three × three factorial arrangement with three types of fat (nonfat, three percent fatty acid and three percent soy oil) and three growth promoters (without GP, flavomycin and protexin) in completely randomized design with four replicates per each treatment. Fat and its type had significant effects on weight gain and the body weight gain of birds fed diets containing soy oil were better (P< 0.05). Dietary flavomycin supplementation improved weight gain and FCR (P< 0.05). The fat type × growth promoter’s interaction influenced broiler performance, significantly (P< 0.05). Birds fed on diets containing soy oil and flavomycin showed the highest feed intake and weight gain, whereas, the lowest feed intake and weight gain was belonged to birds fed diets containing fat and protexin (P< 0.05). From the results obtained, it can be indicated that addition of protexin to diets containing fat has negative effect on broiler growth performance.
Mahnaz Salehi; Raziyeh Hezareh Moghadam
Volume 13, Issue 1 , September 2011, Pages 17-22
Abstract
To study the fleece characteristics of native goats in Sistan and Balouchestan province, fiber sample was taken from 270 females between one to three years old from Khash, Saravan and Iranshahr cities. The differences between age groups for all fleece parameters except fleece weight were not significant. ...
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To study the fleece characteristics of native goats in Sistan and Balouchestan province, fiber sample was taken from 270 females between one to three years old from Khash, Saravan and Iranshahr cities. The differences between age groups for all fleece parameters except fleece weight were not significant. The fleece weight of two and three years old goats were 263.4 (± 7.7) and 315 (± 7.8) gr, respectively and were more than the fleece weight of yearling goats 323 (± 7.7) gr. The results of cashmere in Khash goats was highest (26.3 ± 1%), and the goats of Iran-shahr had the finest cashmere of (12.5± 0.3 micron).
Zabihollah Abdolmaleki; manocher souri; Mohammad Mehdi Moeini
Volume 13, Issue 1 , September 2011, Pages 23-31
Abstract
A total of 16 suckling Merghoz kids, comprising eight male and eight female with birth liveweights of 2.7 ± 0.11 and 2.3 ± 0.16 kg, respectively were used in a 2 × 2 factorial arrangement. The kids were blocked within sex according to their liveweight and randomly allocated to one ...
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A total of 16 suckling Merghoz kids, comprising eight male and eight female with birth liveweights of 2.7 ± 0.11 and 2.3 ± 0.16 kg, respectively were used in a 2 × 2 factorial arrangement. The kids were blocked within sex according to their liveweight and randomly allocated to one of two treatments: ad libitum good quality alfalfa hay in addition to free suckling (control) or ad libitum creep mixture in addition to free suckling and free choice good quality alfalfa hay (creep mixture). Daily feed intake and liveweight changes of all kids were recorded during the study. Skin biopsies and fibre samples were taken every 15 and 28 days, respectively. Average daily dry matter and milk intake by the kids were similar in the four groups. Kids in creep mixture diet showed higher value of average daily gain (P< 0.05). Sex and dietary treatment had no significant effects on secondary follicle density and the S/P ratio in the skin. In contrast, the mean values of both primary and secondary follicular index were significantly different under the influence of sex and dietary treatment (P< 0.05 and P< 0.01). It is concluded that follicular index and growth rate in suckling Merghoz kids were increased due to using creep mixture diet.
Yonous Miar; A. Reza Salehi; Seyed Ahmad Aleyasin; Somayeh Raouf zadeh
Volume 13, Issue 1 , September 2011, Pages 33-40
Abstract
Myostatin (MSTN), also known as growth and differentiation factor-8 (GDF8), is a member of the transforming growth factor beta (TGF-?) superfamily that decreases growth in mammals. A single nucleotide polymorphism (SNP) in the myostatin (GDF8) 3'UTR of OAR2 has been known as responsible for muscular ...
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Myostatin (MSTN), also known as growth and differentiation factor-8 (GDF8), is a member of the transforming growth factor beta (TGF-?) superfamily that decreases growth in mammals. A single nucleotide polymorphism (SNP) in the myostatin (GDF8) 3'UTR of OAR2 has been known as responsible for muscular hypertrophy in foreign breeds. In this study, in order to identify single nucleotide polymorphisms (SNP) in the myostatin (GDF8) gene, blood samples were collected from a population set of Chaal (n = 20), Zandi (n = 24) and Zel sheep (n = 17) lambs. Genomic DNA was extracted from the whole blood samples and polymerase chain reaction (PCR) was carried out in order to amplify a 1003 bp fragment of the target gene and PCR products sequenced to detect single nucleotide polymorphism (SNP). Comparison of the sequence of the target gene in Gene Bank with our results of sequencing showed all animals had the g. + 6223G allele in the 3'UTR of myostatin which do not cause double muscle (DM) phenotype.
Ahmad Afzalzadeh; Mohsen Absalan; seyed davood sharifi; Ali Akbar Khadem; Davoud Ghandi
Volume 13, Issue 1 , September 2011, Pages 41-48
Abstract
To study the effects of various levels of whole cottonseed (WCS) on performance, carcass characteristics and blood parameters, an experiment in completely randomized design (CRD) with four diets containing zero, four, eight and 16 percent WCS on 20 Zandi male lambs with initial average weight 30.4 ± ...
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To study the effects of various levels of whole cottonseed (WCS) on performance, carcass characteristics and blood parameters, an experiment in completely randomized design (CRD) with four diets containing zero, four, eight and 16 percent WCS on 20 Zandi male lambs with initial average weight 30.4 ± 1.8 kg and 5-6 months old for 90 days was performed. Energy and chemical composition of rations were similar. In comparison of control diet with diets contain WCS in aspect of feed intake, feed conversion ratio, the percent of the carcass and also abdominal fat was significant difference (P< 0.01). The effect of diet on concentration of blood parameters was significant (P< 0.01). Glucose concentration with increasing of WCS in diet was decreasing, whereas concentration of cholesterol and triglyceride in blood increased linearly. This experiment showed that the WCS could be included up to eight percent of the fattening male lamb’s diet.
Fathollah Naghizadeh; Mohammad Amir Karimi Torshizi; shaban rahimi
Volume 13, Issue 1 , September 2011, Pages 49-58
Abstract
This study was conducted to compare the effect of various commercial in-feed disinfectants on layer performance, intestinal microflora, and egg cholesterol. One hundred and eight layer hens (LSL, 24 Wks of age) were divided into six groups consisting: Control, Formaycin-200 ppm, Formalin-200 ppm, and ...
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This study was conducted to compare the effect of various commercial in-feed disinfectants on layer performance, intestinal microflora, and egg cholesterol. One hundred and eight layer hens (LSL, 24 Wks of age) were divided into six groups consisting: Control, Formaycin-200 ppm, Formalin-200 ppm, and Nanosilver in feed-15 ppm or drinking water-7.5 ppm. There were no differences between experimental groups for egg production and egg weight. Formycin fed birds produce the highest egg mass (P< 0.05). In comparison of the two methods of Nanosilver administration, no significant differences were observed for egg production, egg weight and egg mass. Lactic acid bacteria counts in caecal contents were significantly increased in comparison to control and Formycin fed groups (P< 0.01). Gram negative counts in ileum contents were reduced by all additives, in comparison to control (P< 0.01). Cholesterol content of egg was increased in response to Formycin and Nanosilver (in drinking water) (P< 0.01). In conclusion, in-feed supplementation of Formalin and Nanosilver in laying hens’ feed resulted in efficient control of intestinal microbial counts and simultaneously improved the egg yield.