Zahra Karimi Banrivand; Mansour Rezaei; Mohammad Kazemi Fard; Mohammad Ali Tajick Ghanbari
Volume 24, Issue 4 , December 2022, , Pages 489-500
Abstract
This research was carried out to evaluate the effect of sunflower seed meal fermented with Aspergillus niger and Saccharomyces cerevisiae on performance, nutrient digestibility, immune response, some blood parameters in 200 male Ross 308 broiler chicks in a completely randomized design. with five treatments. ...
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This research was carried out to evaluate the effect of sunflower seed meal fermented with Aspergillus niger and Saccharomyces cerevisiae on performance, nutrient digestibility, immune response, some blood parameters in 200 male Ross 308 broiler chicks in a completely randomized design. with five treatments. Experimental treatments were: 1- Diet containing sunflower seed meal fermented by Aspergillus niger 2- Diet containing sunflower seed meal fermented by Saccharomyces cerevisiae 3- Diet containing sunflower seed meal fermented by both Aspergillus niger and Aspergillus niger 4- Diet containing sunflower seed meal without processing 5-Control diet based on corn and soybean meal. Feed intake in control and treatment 1 were higher than the other treatments in starter and finisher periods of the experiment (P<0.05). Daily Feed intake in control group was higher than the other treatments in whole period of the experiment (P<0.05). Daily weight gain in control and treatment 1 were higher than the other group in starter and grower periods of the experiment (P<0.05). Feed conversion ratio in treatment 1 was better in finisher phase. In whole period of the experiment, feed conversion ratio in control and treatment 1 was better than the other treatments (P<0.05). Dry matter, crude protein, crude fat digestibility in the control group was higher than the other treatments (P<0.05). In conclusion, inclusion of sunflower seed meal fermented with Aspergillus niger, in broiler diet showed similar feed conversion ratio in compared to control group in whole period of the experiment and also lowered abdominal fat percentage.
mehrdad nafisi; Mansour Rezaei; sayed abdoullah hosseini; mohamad kazemifard
Volume 21, Issue 1 , April 2019, , Pages 113-125
Abstract
In order to determine effect of various sources of manganese, zinc and copper (Sulfate, foreign and Internal organic) and requirement levels (100, 50% requirement) on performance and immune response of broilers, an expriment was conducted using 480 commercial CAB 500 hybrid broilers in a 2×3 factorial ...
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In order to determine effect of various sources of manganese, zinc and copper (Sulfate, foreign and Internal organic) and requirement levels (100, 50% requirement) on performance and immune response of broilers, an expriment was conducted using 480 commercial CAB 500 hybrid broilers in a 2×3 factorial arrangement with completely randomized design. During the experiment, live body weight (LBW), feed intake (FI) and feed conversion ratio (FCR) were measured. At the end of the experiment, blood sampling was done and total antibody titer against sheep's red blood cell (SRBC), antibody titer against Newcastle Disease virus (ND) and differential count of white blood cells (WBC) were measured. The results showed that mineral sources did not affect the performance of broilers. The sources of minerals had a significant effect on livability percentage (P<0.05) and the highest livability was observed for organic (foreign and local) treatments. Usage of local organic manganese, zinc and copper caused a better response to sheep's red blood cell (SRBC) (P<0.05) relative to foreign form. Moreover, there was significant difference among the treatments in terms of weight (P<0.05), feed conversion (P<0.05) and production index (P<0.05) and treatment with 100% requirement level had maximum impact. The birds fed with 50 % requirement showed a better response to SRBC (P<0.05). According to the results of this experiment, the organic forms of the three manganese, zinc and copper produced in Iran can simultaneously, meet the needs of broilers and can be replaced with inorganic and the foreign sources. In addition, the 100 % requirement level of manganese, zinc and copper, regardless of source, is recommended to achieve the maximum growth performance and 50 % requirement level is recommended for better immune function.