Farzaneh Sattari najaf abadi; Ardeshir Mohit; hossein Moravej; navid Ghavi Hosien-Zadeh; hassan darmani koohi; meisam tavakoli
Volume 23, Issue 1 , March 2021, , Pages 97-107
Abstract
This study was conducted to investigate the effects of two types of omega-3 calcium fat powders with animal and vegetable origin on productive performance, reproductive and egg quality of broiler breeder hens by using 60 hens and 20 roosters (65 weeks), in a completely randomized design with ...
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This study was conducted to investigate the effects of two types of omega-3 calcium fat powders with animal and vegetable origin on productive performance, reproductive and egg quality of broiler breeder hens by using 60 hens and 20 roosters (65 weeks), in a completely randomized design with five treatments and four replicates for two months. Experimental treatments were: 1- control (without fat powder); 2- 1.5% animal omega-3 calcium fat powder based on fish oil; 3- 3% animal omega-3 calcium fat powder based on fish oil; 4- 1.5% vegetable omega-3 calcium fat powder based on flaxseed oil; 5- 3% vegetable omega-3 calcium fat powder based on flaxseed oil. Egg production percentage and economic benefit of hens fed with diets containing 1.5% animal and vegetable fat powders were greater than hens that received 3% of them (p<0.05). The highest concentration of yolk docosahexaenoic acid and docosahepanthanoic acid were in eggs of hens fed with diet containing 3% animal and vegetable fat powder and thelowest concentration of linolenic acid was in the yolk of eggs obtained from control hens or hens fed with diet containing 1.5% animal fat powder (P<0.05). The lowest percentage of hatchability and the highest omega-6: omega-3 ratio were related to hens received control diet (P<0.05). Based on current results, adding animal or vegetable omega-3 calcium fat powder at the level of 1.5% in old broiler breeder hen’s diet, without negative effect on performance, improve hatchability and yolk fatty acid composition and is economically more affordable.
Tahereh Mersadi-Sabet-Kordmahale; Maziar Mohiti-Asli; Hassan Darmani-Kuhi
Volume 21, Issue 4 , January 2020, , Pages 521-531
Abstract
This experiment was carried out to investigate the effect of different inclusion levels of free and microencapsulated essential oil of Ajowan (EOA) herb in broilers diet on growth performance and some ileal bacteria population. A total of 320 one-day-old chicks were distributed in a completely ...
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This experiment was carried out to investigate the effect of different inclusion levels of free and microencapsulated essential oil of Ajowan (EOA) herb in broilers diet on growth performance and some ileal bacteria population. A total of 320 one-day-old chicks were distributed in a completely randomized design with 2×4 factorial arrangement. The dietary factors were 2 different forms of EOA (free and encapsulated) and 4 dietary inclusion levels of EOA (0, 50, 100 and 150 mg/kg). Growth performance parameters were recorded throughout the experiment, and intestinal organs weight and ileal microbial population were measured on 42 day of age. Broilers fed encapsulated EOA in diet had higher body weight gain and lower feed conversion ratio during 1 to 21 day of age than those fed free EOA (P<0.05). Higher relative weight of liver (% of live weight) was achieved in broilers fed diets supplemented with encapsulated EOA (P<0.05). There was a significant interaction between the form and dietary levels of EOA on E. coli count (P<0.05). As a general conclusion, use of encapsulated EOA led to an improvement in body weight gain, FCR, and European Production Index, in the first three weeks of growth and in the whole period of growth phase, respectively.
Zahra Alimoradi Tamrin; Hassan Darmani Kohi; navid gavi hosseinzadeh
Volume 20, Issue 1 , May 2018, , Pages 1-14
Abstract
In order to investigate the effects of Galbanum essential oil (GEO) and xylanase on performance and intestinal microflora of broiler chicks, a total of 160 one-day old chicks (Ross 308 strain) were used to four dietary treatments based on a completely randomized design in a factorial arrangement. The ...
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In order to investigate the effects of Galbanum essential oil (GEO) and xylanase on performance and intestinal microflora of broiler chicks, a total of 160 one-day old chicks (Ross 308 strain) were used to four dietary treatments based on a completely randomized design in a factorial arrangement. The factors included were xylanase (0 and 0.2 gr/kg of diet) and GEO (0 and 0.1 gr/kg of diet). During the experimental periods (0-10 d, 11-24 d and 25-42 d), body weight gain (BWG), feed intake and feed conversion ratio (FCR) were measured. At days 21 and 42 of age two chicks from each replicate were slaughtered to determine carcass characteristic and ileal microbial populations of E. coli and Lactobacillus. Adding enzymes to the diet increased BWG in growing period and improved FCR in the growing and in the entire period of the experiment. At 21 day of age, GEO supplementation alone or GEO and xylanase as mixed significantly (P