Antioxidant Status, Blood Constituents and Immune Response of Broiler Chickens Fed Two Types of Diets with or without Different Concentrations of Active Yeast (original) (raw)
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Antioxidants, 2013
The aim of the study was to determine the effect of yeast probiotic on body weight, and the activities of anti-oxidant enzymes: superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GPx), and malondialdehyde (MDA) concentration of broiler chickens. The experiment was carried out on hybrid Hubbard broiler chickens (n = 200). Two-hundred day-old chicks were randomly selected and distributed into four groups of 50 day-old chicks each: Control, C, and treatment groups comprising T 1 , T 2 and T 3 administered with 0.25 mL, 0.5 mL and 1.0 mL yeast probiotic, respectively. Chicks were fed a commercial starter diet for the first 28 days of age, followed by pelleted finisher diet from 29 to 42 days. Chickens in T 1 had a significantly (p < 0.01) higher body weight at 4th week of age when compared with the control. SOD activity in all treatment groups was not significantly (p > 0.05) different when compared with the control. GPx activity was significantly (p < 0.01) higher in T 1 , when compared with the control. GPx activity in T 2 was higher (p < 0.01) when compared with the control. There was no significant (p > 0.05) difference in MDA level in all the treatment groups. In conclusion, administering yeast probiotic supplement increased body weight and enhanced serum anti-oxidant enzyme activities of broiler chickens.
Afr. J. Agric. Res, 2008
The aim of the study was to investigate the effect of supplemental probiotic preparation on performance indices, serum enzymes and electrolytes of broiler chickens. Two hundred (200) day-old Marshall broiler chicks were randomly selected and distributed based on the level of supplementation into four groups of 50 chicks each (Control, C; E 1 0.5%, E 2 1.5% and E 3 2.0%). Chickens fed 2.0% probiotic had a significantly higher body weight when compared with the control group. Activity of alanine aminotransferase differed significantly in the group E 1 0.5%, and especially (p<0.01) in the group E 1 1.5%. Alkaline phosphatase activity decreased significantly (p<0.05), when compared with that of the control group. Serum calcium and phosphorus concentrations in experimental groups were significantly higher. Potassium concentration in experimental group rose significantly (p<0.05), when compared with that of the control broiler chickens. In conclusion, supplementing broiler feeds with 2.0% yeast probiotic improved performance indices, serum enzyme activities and enhanced the maintenance of electrolyte homeostasis in broiler chickens.
Journal of Animal Science and Biotechnology
Background There is a growing search for natural feed additives to alleviate the deleterious effects of coccidia infection in poultry production. This study aimed to investigate the effect of enzymatically treated yeast (ETY) on the growth performance, nutrient digestibility, intestinal morphology, antioxidative status, and cecal mucosa cytokines of coccidia-challenged broiler chickens. Methods From d 1 to 14 post hatching, 480 broiler chickens were allocated to 3 corn-soybean meal-based experimental diets with increasing concentrations of ETY (0, 1, or 2 g/kg). The experiment was designed as a randomized complete block design with body weight (BW) used as a blocking factor. On d 14 post hatching, the birds were re-randomized within each of the 3 experimental diets. Each of the 3 diet groups was split into a challenge or no-challenge group. This resulted in a 3 × 2 factorial arrangement of treatments. The coccidia challenge was administered on d 15 by an oral gavage. Results Dietary...
Journal of Animal and Poultry Production, 2019
An experiment was conducted to study the effect of yeast (saccharomyces cerevisiae) and mushroom (pleurotus ostreatus) as natural feed additives on the productive and immune response of broilers. 375 Cobb broiler chicks, aged one day-old were supplied from one of the commercial hatchery, individually weighed and assigned randomly to five equal experimental groups of 75 birds each. Birds of each group were further subdivided into three replicates of 25 birds each and housed in floor pens with clean wood shavings. A basal diet was contains 3000 kcal ME/kg and 23% crude protein during the starter period till 21 day followed by 3100 kcal ME/kg and 21%crude protein during the finisher period till 42 day. One of the 5 experimental groups was fed this diet as such to serve as control. The second and third group feed basal diet supplemented with 1or 2g yeast (saccharomyces cerevisiae).The fourth and fifth group feed control basal diet supplemented with 1 or 2g mushroom (pleurotus ostreatus). Feed and water were submitted add libitum. All chicks of the experimental groups were reared under the same managerial, healthy and environmental condition, through the whole experimental periods that lasted to 42days of age. Our present data can be summarizes as follows, birds fed different levels of yeast or mushroom recorded a better means of body weight change and feed conversion compared to those of control group. Birds fed 1,2g yeast or 2g mushroom consumed less (P≤0.05) compared with other two treatments group, that which consumed approximately similar amount of feeds. Chicks fed either yeast or mushroom containing diet, recorded a significant improvement in viability rate. At the end of 42 days of ages, birds fed 1 or 2 g yeast/kg containing diet recorded heavier (P≤0.05) carcass weight percentage and total edible parts compared to control groups. The relative weights of pancreas, bursa of fabricius and thymus were significantly (P≤0.05) improved in groups fed either 1, 2g yeast or 1, 2g mushroom containing diet. In conclusion, yeast (saccharomyces cerevisiae) or mushroom (pleurotus ostreatus) could be safely used in broiler feeding as natural feed additives at 2g /kg feed with superior effects on their productive and immune response.
World’s Veterinary Journal , 2021
A total number of 192 male one-day-old broilers chickens were randomly divided into four treatment groups of 48 chickens. Chickens of group one fed a plain diet without any supplement (control), while the diets ib groups two, three, and four were supplemented with Whole Yeast (WY, Saccharomyces cerevisiae, 0.1%), Yeast Cell Wall (YCW, 0.3 %), and Yeast Extract (YE, 0.07 %), respectively. At the end of the experimental period (35 days), the bodyweight of chickens and the feed intake of each cage were measured, and then the feed conversation ratio was calculated. Blood samples were also collected to measure the serum components and relative spleen, bursa of Fabricius, and thymus gland. The results obtained indicated that all productive performance parameters improved in response to the feeding supplementation. Blood parameters indicated that the treated groups had a significantly higher level of serum total protein and albumin as well as significantly lower serum total lipids and cholesterol. The enzyme activities of ALT, AST, and ALP were significantly reduced by WY, YCW, and YE supplementation. The relative organ weights of the spleen, bursa of Fabricius, and thymus increased significantly in broilers fed with WY, YCW, and YE, and the highest values were observed in the chickens fed with WY. It can be demonstrated that the supplementation of WY or its derivatives in the diet of broiler chickens improves the production performance as well as the physiological and immunological parameters, and consequently produce a healthier chicken.
International Journal of Animal Science and Technology
The research was conducted to observe the effect of a probiotic and organic acid with yeast extract on growth performance (body weight gain, meat yield percentage, and organ weight), hematological (Hb, ESR, and PCV) and biochemical parameters (Urea, Uric acid, and Creatinine) as an indication of kidney function. A total of 18 broiler chicks (Cobb-500) 7 days old were assigned to 3 treatment groups as group A (control group, n=6) was fed with standard commercial feed, and Group B (n=6) was fed with probiotics (Gut-pro®). Group C (n=6) was fed with probiotics, organic acids, yeast extract, and normal commercial ration. Chicks were reared for 35 days. Body weights were recorded weekly. Broilers were sacrificed by cervical dislocation and blood samples were collected for analysis. Serum samples were separated for biochemical tests. Whole meat, liver, viscera and skin were collected and weighed. Total body weight, weight of whole meat, liver, viscera and skin increased significantly (P ˂ 0.01) in birds of group C (organic acid with probiotics) and group B (probiotic) than that of the control group A. Packed cell volume and hemoglobin concentration were increased significantly (P ˂ 0.01) in birds of group B (probiotic) and group C (probiotic and organic acid with yeast extract) than that of the control group A. Erythrocyte Sedimentation Rate (ESR) increased significantly (P ˂ 0.01) in control group A than that of probiotic and organic acid-treated groups. Uric acid and Creatinine concentrations decreased significantly (P ˃ 0.01) in probiotic and organic acid-treated groups than in the control group. Urea levels in group B (probiotic) and group C (probiotic and organic acid with yeast extract) were similar to that of control group A.
2019
The effects of feeding baker’s yeast performance of Cobb 500 broilers were studied. Four nearly isocaloric and isonitrogenous starter and finisher rations were prepared. 240 chicks with an average initial body weight of 42g were randomly divided into 12 groups contained 4 treatments with 3 replications for each treatment. Treatment rations were containing 0, 0.5, 1.5 and 2.5% of baker’s yeast as T1, T2, T3 and T4 respectively. At the end of the trial, 3 males and 3 female chickens from each replication were slaughtered for carcass evaluation. The Crude Protein (CP) and Metabolizable Energy (ME) contents of baker’s yeast were 48% and 3615 kcal/kg DM, respectively. The CP content of the rations during the starter and finisher phases were 22% and 20%, respectively. The ME content of the rations during the starter and finisher phases were 3100 kcal/kg and 3200 kcal/kg respectively. Feed intake during the starter phase and entire trial period was lower for T4, whereas during the finisher...
Influence of live yeast supplementation on antibody response and serum biochemistry in broilers
Journal of Veterinary and Animal Sciences, 2002
Supplementation of live yeast culture containing Saccharomyces cerevisiae (SC) in broiler ration enhanced immune status of birds against Ranikhet disease and infectious bursal disease. Serum cholesterol level reduced significantly (P < 0.05) with 0.2 per cent SC supplementation, while other serum parameters like total proteins, albumin and glucose remained unchanged.
Yeast are fungi and Eucaryotic micro-organisms. Among yeasts, Saccharomysec cerevisiae is not only industrially important, but also nutritionally important as a probiotic for animals. A study was conducted to determine the effects of Saccharomysec cerevisiae SC47 on broiler visceral and immune organs. Four hundred one day old male Ross 308 broilers were completely randomized design to 5 treatments, with 4 replicate, 20 birds per each. The experimental diets fed at three different breeding periods (starter, grower and finisher) and using tables to nutrient requirement of poultry (NRC1994) were arranged and prepared. Experimental diets consist of basal diet as control (T1), basal diet plus 0.5% Saccharomysec cerevisiae (T2), basal diet plus 0.1% Saccharomysec cerevisiae (T3), basal diet plus 0.15% Saccharomysec cerevisiae (T4) and basal diet plus 0.2% Saccharomysec cerevisiae (T5), were fed to birds throughout 1 to 49 day breeding period. At the age of 49 day, one bird from each replicate was selected, slaughtered and then the visceral and immune organs were measured. data will be analyzed and variance by SAS software and average data will be compared by multi tolerance test of Donken in probability level of 5 percent. The results showed that Saccharomysec cerevisiae have significant effect on visceral (Proventriculus, Small intestine, Colon, Cecum, Lung) and Immune organs (Spleen, Gall bladder, bursa of fabricius ) all traits (p<0.05). But, price diet did not have a statistically significant of broiler chickens.
Journal of World's Poultry Research
The effects of feeding baker's yeast performance of Cobb 500 broilers were studied. Four nearly isocaloric and isonitrogenous starter and finisher rations were prepared. 240 chicks with an average initial body weight of 42g were randomly divided into 12 groups contained 4 treatments with 3 replications for each treatment. Treatment rations were containing 0, 0.5, 1.5 and 2.5% of baker's yeast as T1, T2, T3 and T4 respectively. At the end of the trial, 3 males and 3 female chickens from each replication were slaughtered for carcass evaluation. The Crude Protein (CP) and Metabolizable Energy (ME) contents of baker's yeast were 48% and 3615 kcal/kg DM, respectively. The CP content of the rations during the starter and finisher phases were 22% and 20%, respectively. The ME content of the rations during the starter and finisher phases were 3100 kcal/kg and 3200 kcal/kg respectively. Feed intake during the starter phase and entire trial period was lower for T4, whereas during the finisher phase in control diet group showed the highest feed intake than the other supplemental groups. The highest daily body weight gain was recorded in broilers fed T4 rations during starter phase, finisher phase and entire experimental period. Feed conversion ratio of T4 and T3 groups was better than T2 and T1. T3 and T4 groups had higher eviscerated percentages. Blood parameters results showed that fed broilers yeast containing ration had higher WBC, PCV and Hb. Partial budget analysis indicated that the highest net income, marginal rate of return and chicks' sale to feed cost were obtained for T3 followed by T4. Baker's yeast can be an important feed additive, which can be included up to 2.5% of the total ration and improve the overall performance of broilers without compromising the hematological indices of broiler chickens.