D. Khademi Shurmasti; F. Shariatmadari; M.A. Karimi Torshizi
Abstract
This experiment was performed to investigate the effects of probiotic on productive traits, blood parameters, serum lipoproteins, and blood immune response of broilers fed with pumpkin seed oil. A total of 480 one-day-old Arian commercial broilers in a 2×3 factorial experiment, with two plant oil ...
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This experiment was performed to investigate the effects of probiotic on productive traits, blood parameters, serum lipoproteins, and blood immune response of broilers fed with pumpkin seed oil. A total of 480 one-day-old Arian commercial broilers in a 2×3 factorial experiment, with two plant oil sources (canola and pumpkin) and three additives (no additive, probiotic and antibiotic) in a completely randomized design with four replicates and 20 chicks per replicate, were randomly distributed among the experimental units. The results showed that probiotic application with plant oil sources had no negative effect on productive traits including relative weight of carcass, breast, thigh, abdominal fat, survival percentage, and feed conversion ratio. The percentage of blood hematocrit in the chicks receiving the additives was lower than the control group (P<0.05). The effect of oil source and additives on other blood parameters including total protein, glucose, and uric acid was not statistically significant. The use of pumpkin (Cucurbita pepo L. convar. pepo var. styriaca) seed oil significantly reduced triglyceride and very-low-density lipoprotein (VLDL), and increased total cholesterol and high-density lipoprotein (HDL) (P<0.05). The effect of oil source on low-density lipoprotein (LDL) was not statistically significant. The lowest levels of triglyceride, total cholesterol, HDL, and VLDL were observed in chicks fed with pumpkin seed oil and virginamycin (P<0.05). The highest amount of triglyceride was observed in chicks fed with canola oil and antibiotics (P<0.05). The effect of oil source and additives on blood immune response and relative weight of lymphoid organs was not statistically significant. Generally, using pumpkin seed oil resulted in a partial improvement in serum lipoproteins. On the other hand, the efficiency of the additives depended on the type of oil (fatty acid profile) used in the diet.
S.M. Mehdizadeh; A. Zarei; H. Lotfollahin; F. Mirzaei; M.H. Lebaschi; M. Haji Mohammadi
Abstract
This study was carried out using a completely randomized design to evaluate the effects of different levels of dietary inclusions of Aleo vera gel, probiotics and antibiotic on performance, immune response and egg qualitative traits in 288 commercial laying hens (Hy – line) at the age of 29 weeks ...
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This study was carried out using a completely randomized design to evaluate the effects of different levels of dietary inclusions of Aleo vera gel, probiotics and antibiotic on performance, immune response and egg qualitative traits in 288 commercial laying hens (Hy – line) at the age of 29 weeks for 84 days. Hens were divided into six treatments and 4 replicates with 12 birds each and were offered standard feed ration with free water. The treatments were as follows: T1= Control groups (without feed additive), T2= T1+ 80mg antibiotics/kg feed, T3= T1+ Aleovera gel 1.5%/kg feed, T4= T1+ Aleovera gel 3%/kg feed, T5=T1+ probiotics 0.05%/kg feed and T6= T1+ probiotics 0.1%/kg feed. Results showed that, Aleovera gel had significant effects on egg production, feed efficiency and egg mass as compared to control groups (p<0.05), but the highest feed efficiency was belonged to probiotics treatments compared to the rest (p<0.05). No significant difference was observed in egg qualitative traits like hugh unit, yolk coloration, egg specific gravity, and egg shell strength between experimental diets and control group (p<0.05). Experimental diet containing 1% probiotic caused a reduction in blood cholesterol as compared to other experimental groups (p<0.05). Diet supplemented by inclusions of probiotic at 0.1%/kg feed had significant effect on IgM and IgG level, antibody titre against Newcastle disease virus and antibody titre against sheep red blood cell (p<0.05). Finally, probiotic treatments performed well with excellent results on antibody titre against sheep red blood cell as compared to control and other related treatments throughout the experimental period (p<0.05). Aleo vera treatments performed well with excellent results on antibody titre against Newcastle disease virus as compared to control and other related treatments throughout the experimental period (p<0.05). Therefore, it is concluded that the application of Aleo Vera product could improve the performance of the laying hens and consequently increases the economic profit.
