zahra tahami; Behrouz Dastar; Ehsan Oskoueian; Seyed reza hashemi
Abstract
This study was performed to investigate the effect of organic and inorganic selenium supplementation on laying hens' performance, quality traits and peroxidation of egg yolks and whites. The experiment was carried out in a completely randomized design with 300 laying hens (W-36) from 23 to 35 weeks of ...
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This study was performed to investigate the effect of organic and inorganic selenium supplementation on laying hens' performance, quality traits and peroxidation of egg yolks and whites. The experiment was carried out in a completely randomized design with 300 laying hens (W-36) from 23 to 35 weeks of age with 5 treatments and 6 replications and 10 laying hens in each replication. Experimental treatments include: treatment one or control (basic diet without selenium), The second treatment of 0.5 selenite-sodium (base diet+0.5 mg/kg selenite-sodium), the third treatment selenite-sodium 1 (basic diet+1mg/kg selenite-sodium), the fourth treatment selenium-methionine 0.5 (basal diet + 0.5 mg/kg seleno-methionine) and the fifth treatment was seleno-methionine 1 (basal diet +1 mg/kg seleno-methionine). The results showed that experimental treatments had no significant effect on egg weight, weight mass, production percentage, feed intake, feed conversion ratio and egg yolk and egg white characteristics (P<0.05). Peroxidation of egg yolk and egg white fats in 1 mg/kg seleno-methionine treatment showed the lowest rate compared to other experimental treatments (P<0.05). The results of the present study showed that among the sources of selenium, 1 mg/kg of selenium-methionine more effectively reduced the peroxidation of fats and increased antioxidant activity.
naser pourabbasali omran; K. shojaeian; Gh. Jalilvand; M. Kazemifard
Abstract
This experiment was aimed at evaluation the effect of different levels of organic selenium on performance, quality characteristics of eggs and some antioxidant enzymes in Japanese quail breeder. Two hundred forty Japanese quails at eight week old with similar body weight were distributed according to ...
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This experiment was aimed at evaluation the effect of different levels of organic selenium on performance, quality characteristics of eggs and some antioxidant enzymes in Japanese quail breeder. Two hundred forty Japanese quails at eight week old with similar body weight were distributed according to a completely randomized design into five treatments and three replicates (twelve female and four male). Treatments were included: 1) Control (Co), 2) Co+ 0.3 mg/kg of sodium selenite, 3) Co+ 0.2 mg/kg of organic selenium (sel-plex), 4) Co+ 0.4 mg/kg of organic selenium and 5) Co+ 0.6 mg/kg of organic selenium. The results showed that treatment containing 0.4 mg/kg selenium had the highest weight gain (P<0.05). Selenium supplementation of diet had no significant effect on feed intake, feed efficiency, egg shape index, albumen index, yolk index, percentage of yolk and egg yolk color, Weights of carcass, heart and other parts of the digestive tract. Adding of 0.4 mg/kg of organic selenium in control diet caused significantly increase (P<0.05) in shell thickness, Haugh unit, egg weight, yield , fertility and hatchability percent in contrast to other treatments. highest weight of liver and abdominal fat was observed in control group. Therefore, selenium supplementing to diet had higher activity of some antioxidant enzymes that to control(P<0.05). In general, results this experiment was showed that selenium supplementing to control diet at 0.4 mg/kg organic selenium improved of body weight, egg production, fertility and hatching and some antioxidant enzymes activity that measured this experiment.
Abstract
To evaluate the effect of vitamin E and organic selenium by intra eggs injection method on performance, livability and meat quality of broilers, two tests Were conducted. in the first experiment using 800 Fertilized eggs in a completely randomized design with 5 treatments (treatment1: control, treatment2: ...
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To evaluate the effect of vitamin E and organic selenium by intra eggs injection method on performance, livability and meat quality of broilers, two tests Were conducted. in the first experiment using 800 Fertilized eggs in a completely randomized design with 5 treatments (treatment1: control, treatment2: In-ovo injection of saline, treatment 3,4 and 5 In-ovo injection of selenium, vitamin E and selenium + vitamin E respectively) and 4 replicates and 40 eggs and in the second experiment, a completely randomized design, with 10 treatments (chicken of the first trial with two diet of recommended levels of selenium and vitamin E and more than the recommended levels) and 3 replicates per treatment and 15 one-day-old broiler chicks of the first experiment were allocated. In the first experiment results showed that intra egg injection of vitamin E and selenium had no significant effects on hatching eggs. In the second test results showed that weight gain, feed intake and feed conversion ratio of chickens were not affected using different levels of selenium and vitamin E. The results showed that the levels of malon di-aldehyde (index TBARS) and storage time in the freezer showed statistically significant difference between the different treatments (P<0/05). In which by increasing the storage time, the water holding capacity and the TBARS increased (P<0/05).
