Effects of Dietary Inclusion of Probiotics and Organic Acids on Performance, Intestinal Microbiology, Serum Biochemistry and Carcass Traits of Broiler Chickens. (original) (raw)
Related papers
2018
The aim of the present study was to investigate the effect of probiotic, Acidifiers and their combination on carcass characteristics, internal organs, cuts performance and meat to bone ratio in broilers chicks. Two hundred and twenty, one day old unsexed broiler chicks (Ross308 strain) was used in this study. They were divided into four groups with five replicates (11 chicks per each). Group A fed the basal diet (control), group B fed the basal diet supplemented with probiotic (Bacillus subtilis) powder (1.6X 10 9 CFU/gm) at inclusion rate of 500gm/tone. Group C fed the basal diet supplemented with acidifiers; organic acids (Citric Acid, Fumaric Acid, D-L Malic Acid, Lactic Acid and Ortho-phosphoric Acid) at an inclusion ratefade 2kg/tone feed. Group D fed the basal diet supplemented with combination of Bacillus subtilis plus organic acids with the same inclusion rate as in groups (B) and (C) treatments. The addition of bacillussubtilis, acidifiers and their combination did not show...
Performance and carcass quality of broilers supplemented with antibiotics or probiotics
2008
The objective of this study was to evaluate the effects of different additives on broiler performance and meat quality. A total of 1620 oneday-old male Cobb broilers were distributed by a completely randomized experimental design into 5 treatments: positive control-zinc bacitracin (PC); negative control-without additives (NC); probiotic 1-10.000 g/ ton (PR-I); probiotic 2-500 g/ton (PR-II); and probiotic 3-50 g/ton (PR-III). The PC treatment promoted better weight gain (WG) than PR-II (1-28 days) and PR-III (1-14; 1-28 days), better feed conversion (1-40 days period), and the highest WG among all treatments (p<0.05). The performance of broilers fed probiotics was not different than those in the negative control group in any rearing phase, but there were performance differences among probiotic-treated birds. Hot and cold carcass yields and breast pH were not influenced by the different additives as compared to the negative control treatment. The only observed differences were in breast color (a*) and carcass yield between PR-III and the negative control group. Probiotics increased water holding capacity (except for PR-II) (p<0.05). The treatment with antibiotic promoted the highest WG. Meat quality suffered little influence from the different additives.
Response of probiotic and gut acidifier on performance of broiler
Journal of Krishi Vigyan, 2018
An experiment was conducted to study the comparative efficacy of Lactobacillus sporogenes and gut acidifier on the performance of broiler for 0-6 wk. One hundred and fifty day old broiler chicks were randomly divided into three equal groups viz., T1, T2 and T3 having 50 chicks each. The group T1 was control receiving standard broiler diet, group T2 received standard broiler diet supplemented with probiotic (Lactobacillus sporogenes) at the rate of 0.1% and 0.05% in starter mash and finisher mash, respectively, and similarly group T3 received standard broiler diet with acidifier at the rate of 0.1% and 0.05% in starter mash and finisher mash, respectively. Further each group was subdivided into five replicates of 10 birds each. The average weekly live weights at the end of six weeks were 1700, 1805 and 1809g for groups T1 T2 and T3, respectively. Total feed consumption at the end of six weeks for groups T1, T2 and T3 were 3228g, 3270g and 3249g, respectively.
Clinicopathological Studies on the Effect of Acidifier and Probiotics in Broilers
Suez Canal Veterinary Medicine Journal. SCVMJ
This study was conducted on 250 Cobb broilers, healthy chicks oneday-old, to evaluate and compare the impact of using water natural additives (such as acidifier and probiotics) on broiler. Complete blood pictures and immune response, as well as histopathological in treated and experimentally infected chickens with E.coli compared to control.The birds were randomly allotted to ten treatment groups (A-J). Control, probiotic (HerriC 20%) as 0.5 gm, 1gm / 4 liters of drinking water respectively, acidifier (AniGut) as at dose of 1 and 2 ml/ litre of drinking water respectively and another same treatment groups and infected with E coli O78 containing 4 x 10 6 colony-forming units CFU /ml in phosphate buffered saline (PBS) at 21 days of age. The result indicated that, probiotic treated groups 'showed significant increase (P<0.05) in RBCs count and PCV value at 4 and 6 weeks, showed non-significant changes in Hb conc., MCV, MCH and MCHC in compare with the control, while acidifier treated groups showed non-significant changes in erythrogram. The leukogram studies revealed that, there was increase in TLC with characteristic heterophilia, lymphocytosis, and monocytosis in infected non treated group and in probiotic treated groups, while acidifier treated groups showed non-significant changes in TLC and D.L.C all over the experiment. The result of immunological parameters showed an elevation in the serum of IgG and IgM in infected group and in probiotic treated groups. While acidifier treated groups showed non-significant changes. The results of IL-6 and IL-12 showed that there were a significant increase in all infected groups and in probiotic treated groups, while acidifier treated groups showed non-significant changes. Histopathological results showed that addition of probiotic improved all the examined organs. The study concluded that Probiotic has marked growth promoter as well as immunomodulatory effects in broilers, the low dose of probiotic (0.5 gm) proved to be more beneficial than the higher dose.
Combined use of dietary probiotic and acidifier for the production of antibiotic free broiler
Research in Agriculture Livestock and Fisheries, 2016
The effect of feeding probiotic (Bio-Top; Bacillus subtilis and Bacillus licheniformis), acidifier (Sal-Stop), antibiotic growth promoter (AGP) or probiotic plus acidifier was investigated in commercial broiler. A total of four hundred Cobb 500 day-old straight run chicks were randomly distributed to 5 different dietary groups having 4 replications each. The number of birds in each replication was 20. The five dietary groups were as control (basal diet; BD), BD containing AGP at a level of 20g/100kg, BD containing probiotic at a level of 200g/100kg, BD containing acidifier at a level of 200g/100kg; and BD containing an equal amount of probiotic plus acidifier (200g/100kg). Broilers that received either probiotic, acidifier or a mixture of probiotic and acidifier (1:1) exhibited higher body weight gain, lower feed conversion ratio (FCR) and higher costeffectiveness compared with the broilers fed on control diet (P<0.05). However, feeding of diet containing both probiotic and acidifier resulted in the highest growth rate and net profit in all dietary regimens. Broilers fed on probiotic and acidifier in a mixture had FCR similar to other treatment groups. This study indicated that the diet containing probiotic-acidifier mixture seems to be more cost-effective in promoting growth performance of broilers, as an alternative to the AGP, as compared to the use of probiotic or acidifier alone in the diet.
South African Journal of Animal Science, 2009
A study was conducted to investigate the effect of dietary supplementation of an organic acid, a probiotic or a prebiotic alone or the prebiotic combined with the organic acid or the probiotic on the performance and slaughter characteristics of broiler chickens fed a maize-soya based diet. The six dietary treatments were: a basal diet (negative control) and diets containing 0.5 g mannan oligosaccharide/kg (prebiotic), or 1.0 g formic acid/kg (organic acid), or a probiotic at 0.5 g/kg, or 0.5 g prebiotic/kg + 1.0 g organic acid/kg, or 0.5 g prebiotic/kg + 0.5 g probiotic/kg feed. Each treatment consisted of eight pens with 50 birds per pen (25 male + 25 female). All dietary supplements, alone and in combination improved live weight significantly at both 21 and 42 days of age compared with the control. However, combinations of the prebiotic with either the organic acid or the probiotic had no additive benefit at 21 and 42 days of age in comparison with the prebiotic alone. The feed intake of the birds was significantly increased with prebiotic supplementation at day 21, but not at day 42. Organic acid significantly improved feed conversion ratio at day 21. The combination of prebiotic and probiotic significantly improved the feed conversion ratio at both 21 and 42 days in comparison with the control. At days 21 and 42 bird mortality was significantly higher in the treatments containing organic acid and organic acid with the prebiotic. In the female birds no slaughter traits were affected by dietary treatments. However, liver weight as a percentage of live weight in the male birds was significantly lowered with prebiotic and probiotic supplementation. Prebiotic supplementation with organic acid resulted in a significantly lower weight of the small intestines compared with the control. In general, the different feed additive regimens that include the prebiotic, probiotic, organic acid, prebiotic with organic acid and prebiotic with probiotic improved the growth rate of the birds significantly compared to the control treatment. The significant improvement in feed conversion ratio when the prebiotic and probiotic were supplemented together suggests a synergism between them.
Agricultural Science Digest, Volume 44 Issue 3: 530-535 (June 2024)
Background: This study was conducted to determine the effect of supplementing probiotics and antimicrobial agents on the meat quality of broiler chickens. Methods: A complete randomized design was used and 90 male chickens were randomly assigned to five treatments which were replicated 3 times with each replicate having 6 chickens. The treatments had the same nutrients (20% CP and 12MJ/kg) but different supplementation levels of the probiotics and antimicrobial agents. Result: Antimicrobial and effective microorganism supplementations did not have any effect (p>0.05) on feed intake, growth rate and live weights. A significantly lower (p<0.05) feed conversion ratio was observed with supplementation of the antimicrobial. Blood glucose levels were optimized at an effective microorganism supplementation level of 29.00 ml of EM/l of drinking water. Supplementation with 100 ml of EMs per litre of drinking water reduced significantly (p<0.05) the pH of ileum. Effective microorganism supplementation level of 85.00 ml per litre of drinking water optimized the crop pH value. Antimicrobial and effective microorganism supplementations did not have any influence (p>0.05) on live weight, carcass weight, breast weight, drumstick weight ad thigh weight. Similarly, antimicrobial and effective microorganism supplementations did not have influence on meat tenderness, juiciness and flavour. There were no antibiotic and effective microbe residues in the meat. It is, therefore, concluded that effective microorganism supplementation did not have much effect on production parameters, carcass characteristics and meat quality of Ross 308 broiler chickens.
Dietary effect of probiotics and prebiotics on broiler performance, carcass, and immunity
Poultry Science, 2020
This experiment was carried out to evaluate the effects of dietary addition of probiotics (Protexin) and prebiotics (active MOS, mannan oligosaccharides) on growth performance, carcasses, and antibody titer in broilers. A total number of 360-day-old Ross broiler chicks were randomly divided into 9 groups in a 3 ! 3 factorial arrangement. Nine broiler starter (0-21 d) and finisher (21-35 d) diets were formulated by using 3 levels of probiotics (0, 1, and 2 g/kg of feed) and 3 levels of MOS (0, 1, and 1.5 g/kg of feed) and were randomly allotted to 9 groups. Feed intake was not affected by interaction of treatments during all phases (P. 0.05). Feed intake was improved due to the main effect of probiotic (P 5 0.0001) or MOS (P 5 0.005). No interaction (P. 0.05) was observed for weight gain in the starter, finisher, and overall phases. While, during the starter and finisher phases, weight gain was increased by probiotics (P 5 0.028 or 0.04, respectively). Dietary supplementation of MOS improved weight gain (P 5 0.01) and feed conversion ratio (FCR) (P 5 0.03) during the overall period, but during starter and finisher periods, weight gain and FCR were not affected by prebiotics. Apart from dressing percentage, no interaction or individual effect of probiotics and prebiotics was observed for carcass, breast, thigh, heart, liver, and gizzard weight. Antibody titer for infectious bursal disease (IBD) was improved (P 5 0.026) by the interaction effect between probiotics and prebiotics, when compared with the control group. Antibody titer against Newcastle disease (ND) was not affected by probiotics or prebiotics or their interactions (P. 0.05). It could be concluded that supplementation of prebiotics or probiotics can improve the growth performance of broilers. It may also be helpful in improving the antibody titer against IBD in broilers fed antibiotic-free diets.
Bioefficacy of a probiotic feed additive in broiler diets
Three experiments were conducted to evaluate the effects of a probiotic supplement on the performance of broiler chickens. In each experiment, two treatments were applied during both the starter (1-21d) and the grower (22-42d) phases: a basal diet, and the basal diet supplemented with 10 9 CFU/kg Enterococcus faecium CECT 4515. Diets were presented as mash (Experiments I and II) or pellets following local custom, and were based on wheat, barley, maize and soybean meal. 18, 12 and 16 replicates of 22, 60 and 40 Ross-308 birds per treatment were used in Experiments I, II and III, respectively. In all the Experiments, probiotic supplementation increased feed intake at 21 d (53.3 vs 55.3 g/d; 46.4 vs 47.9 g/d; 41.0 vs 46.8 g/d; P<0.050). In addition, probiotic supplementation also increased growth in Experiments I and III (36.3 vs 37.8 g/d; 26.6 vs 30.1 g/d; P<0.050), and in Experiment II (28.0 vs 28.7 g/d; P<0.100).
Evaluation of a new probiotic concept for broilers
2020
SUMMARYProbiotics were introduced as a spray directly in the hatcher when chickens started to leave the eggs which potentially could reduce the horizontal transmission and colonization with pathogenic bacteria. The single introduction of probiotics could limit the cost compared to multiple introductions with feed and/or water. A mixture of five probiotic strains belonging to Escherichia coli, Enterococcus faecalis, Lactobacillus agilis and Lactobacillus rhamnosus was tested with two independent flocks of broilers (Ross 308). For each experiment, a comparison was made to an untreated control flock on the same farm. At day 14 of production the probiotic strains were re-isolated from ileum of euthanized chickens. The first week mortality was slightly increased in the probiotic flock (0.42%) compared to the control (0.35%) in experiment 1, however, it was higher in the control flock (1.45%) compared to the probiotic flock (1.12%) in experiment 2. The average weight of chickens that coul...