scholarly journals Effect of Bacillus velezensis to substitute in-feed antibiotics on the production, blood biochemistry and egg quality indices of laying hens

2020 ◽  
Author(s):  
Miao Ye ◽  
Chunjie Wei ◽  
Anam Khalid ◽  
Qian Hu ◽  
Ru Yang ◽  
...  

Abstract Background The excessive use of antibiotics in the livestock feed industry caused inevitable side effects of microbial resistance. Besides this residual antibiotics in animal-derived foodstuff imposed serious health problems for humans. So this study aimed to investigate the potential use of Bacillus velezensis to substitute antibiotics for poultry production. A total of 468, 49-week-old Hy-Line Brown chickens, were randomly divided into four groups; the control group (regular diet), experiment group I (0.1% B. veleznesis), experiment group II (0.2% B. veleznesis), and antibiotic group (50 mg/kg flavomycin), with three replicates per group and trial period consisted on 42 days. Results The results showed that, compared with the control group, the average egg production rate and daily feed intake of experimental groups I and II increased significantly (P < 0.05), while the average egg weight was increased in experimental group II as compared to I. (P < 0.01). The feed conversion ratio was decreased (P > 0.05) in group II. Egg quality parameters such as yolk weight of the experimental group II was increased, but that of the antibiotic group and experiment group I was decreased, neither significant (P > 0.05). Moreover, the eggshell strength, yolk color, albumen height, and Haugh unit were significantly increased (P<0.05). Compared with the control group, probiotic groups can increase the progesterone and motilin (P > 0.05) but decrease the secretin and cholecystokinin in the blood plasma (P > 0.05). Conclusions This study suggested that B. velezensis can substitute in-feed-antibiotics and improved most of the study parameters significantly. Which suggested that B. velezensis has potential future application value to replace the feed antibiotics.

2020 ◽  
Vol 16 (1) ◽  
Author(s):  
Miao Ye ◽  
Chunjie Wei ◽  
Anam Khalid ◽  
Qian Hu ◽  
Ru Yang ◽  
...  

Abstract Background The excessive use of antibiotics in the livestock feed industry caused inevitable side effects of microbial resistance. Besides this residual antibiotics in animal-derived foodstuff imposed serious health problems for humans. So this study aimed to investigate the potential use of Bacillus velezensis to substitute antibiotics for poultry production. A total of 468, 49-week-old Hy-Line Brown chickens, were randomly divided into four groups the control group (regular diet), experiment group I (0.1% B. veleznesis), experiment group II (0.2% B. veleznesis), and antibiotic group (50 mg/kg flavomycin), with three replicates per group and trial period consisted on 42 days. Results The results showed that, compared with the control group, the average egg production rate and daily feed intake of experimental groups I and II increased significantly (P < 0.05), while the average egg weight was increased in experimental group II as compared to (I) (P < 0.01). The feed conversion ratio was decreased (P > 0.05) in group (II) Egg quality parameters such as yolk weight of the experimental group II was increased, but that of the antibiotic group and experiment group I was decreased, neither significant (P > 0.05). Moreover, the eggshell strength, yolk color, albumen height, and Haugh unit were significantly increased (P < 0.05). Compared with the control group, probiotic groups can increase the progesterone and motilin (P > 0.05) but decrease the secretin and cholecystokinin in the blood plasma (P > 0.05). Conclusions This study suggested that B. velezensis can substitute in-feed-antibiotics and improved most of the study parameters significantly. Which suggested that B. velezensis has potential future application value to replace the feed antibiotics.


2020 ◽  
Author(s):  
Miao Ye ◽  
Chunjie Wei ◽  
Anam Khalid ◽  
Qian Hu ◽  
Ru Yang ◽  
...  

Abstract Background The excessive use of antibiotics in livestock feed industry caused inevitable side effect of microbial resistance. Beside this residual antibiotics in animal derived food stuff imposed serious health problems for humans. So this study aimed to investigate the potential use of Bacillus velezensis to substitute antibiotics for poultry production. A total of 468, 49-week-old Hy-Line Brown chickens, were randomly divided into four groups as control group (regular diet), experiment group I (0.1% B. veleznesis), experiment group II (0.2% B. veleznesis), and antibiotic group (50 mg/kg flavomycin), with three replicates per group and trial period consisted on 42 days.Results The results showed that, compared with control group, the average egg production rate and daily feed intake of experimental groups I and II increased significantly (P < 0.05), while the average egg weight was increased in experimental group II as compared to I. (P < 0.01). The feed conversion ratio was decreased (P > 0.05) in group II. Egg quality parameters such as yolk weight of the experiment group II was increased, but that of the antibiotic group and experiment group I was decreased, neither significant (P > 0.05). Moreover, the eggshell strength, yolk color, albumen height and Haugh unit were significantly increased (P < 0.05). Compared with the control group, probiotic groups can increase the progesterone and motilin (P > 0.05) but decrease the secretin and cholecystokinin in the blood plasma (P > 0.05).Conclusion This study suggested that B. velezensis can substitute in-feed-antibiotics and improved most of the study parameters significantly. Which suggested that B. velezensis has potential future application value to replace the feed antibiotics.


2021 ◽  
Vol 9 (3) ◽  
pp. 87-90
Author(s):  
A. Jyoth ◽  

The effect of fiber rich product on child hood obesity studied with 60 sample which were collected randomly among 10-12 years and categorized into 2 groups i.e, experimental group and control group. Experimental group further categorized into three groups i.e, supplementation with exercise (n=15), only supplementation group (n=15), only exercise group (n=15) and control group consists of (n=15).Anthropometric, and diet survey conducted as parameters. A fiber rich product was prepared and supplemented for 2 months to the selected subjects and it consists of whole Bengal gram, whole green gram, green peas, barley and jaggery. Positive results were obtained in three experimental groups. Significant decrease observed inweight, and BMI, Total cholesterol, Triglycerides, LDL, VLDL significant increase observed in HDL in group I II and III. The results were (51.60-48.26kg, 24.7-23.1, 195.2-152.3 mg/dl, 168.2-145.0 mg/dl, 52.2-54.13 mg/dl, 109.4- 69.4mg/dl, 33.6-28.7mg/dl) in group I, In group II the results are (50.3-49.86kg, 23.7-23.4, 168.6-161.0mg/dl, 145.4-129.6mg/dl, 44.2-45.2 mg/dl, 95.3-90.0mg/dl, 29.1-28.3mg/dl).In group III the tesults aere (50.7-49.6kg, 24.5-23.9, 143.2-139.3mg/dl, 139-134.5mg/dl, 38.2-38.7mg/dl 76.8-74.1 mg/dl, 25.6-28.1mg/dl) .From the results it was clear that when compared to group II and III group I has shown better results.


2022 ◽  
Author(s):  
Makaeva Ayna Maratovna ◽  
Sizova Elena Anatolevna ◽  
Atlanderova Ksenya Nikolaevna

Determining which forms of mineral feed additives can increase farm animal productivity is a key area of research. This study assessed the mineral composition of ruminal fluid and the effectiveness of calcium and phosphorus used by animals after the introduction of finely dispersed particles (FDP) of SiO2 (group I) and FeCo (group II) with a hydrodynamic radius of 109.6 ± 16.6 and 265 ± 25 nm, respectively. The deposition and use of calcium and phosphorus in the body of the experimental animals exceeded the control values. In group I, 30.8% more calcium was deposited (p ≥ 0.05), and in group II, the value was 30.3% (p ≥ 0.01). In the experimental groups, the calcium utilization rate was 27.3% higher in group I (p ≥ 0.05), and 28.2% higher in group II (p ≥ 0.01) compared to in the control. Phosphorus deposition was 34% higher (p ≤ 0.01) in experimental group I and 6% higher in experimental group II, compared with the control. Group I had a high utilization rate of phosphorus from the feed (with a 29% difference compared to the control). Comparison of the experimental groups revealed that the introduction of SiO2 FDP promoted an increase in the concentration of silicon, phosphorus, and calcium in the ruminal fluid. The introduction of FeCo FDP was accompanied by a decrease in the concentration of iron and cobalt in the ruminal fluid. Thus, the use of feed additive in finely dispersed form in the diet of animals was accompanied by an increase in the use of calcium and phosphorus by the animal’s body, which is advisable when intensifying milk and meat productivity. The obtained results require further research. Keywords: finely dispersed forms of microelements, ruminants, calcium and phosphorus exchange, feeding


Author(s):  
A. Subradeepan

The purpose of the study was to investigation the effect of continuous running on endurance of men kabaddi players. To achieve the purpose of this study, thirty men kabaddi players selected from the Department of Physical Education and Sports Sciences, Annamalai University, Tamilnadu, India.  The age, height and weight of the subjects ranged from 19 to 21 years, 155 to 169 centimetres and 58 to 68 kilograms respectively. They were divided into two groups; each group consisted of fifteen subjects. Group-I underwent continuous running and group-II acted as control who does not participate in any training programme. The data collected from the two groups prior to and post experimentation were statistically analyzed by analysis of covariance (ANCOVA). The experimental group had significant improvement on endurance when comparing to the control group.


Author(s):  
Roman Voroshilin ◽  
Sergey Rassolov ◽  
Elena Ul'rih ◽  
Marina Kurbanova

Introduction. Nutrition has a great effect on the quality of life and longevity. Modern food industry pays much attention to the issue of obtaining high-quality and safe livestock products grown without feed antibiotics. The research objective was to study the effect of chamomile extract on a complex of economically useful traits of young rabbits and the qualitative characteristics of meat, as well as to determine the optimal dosage of chamomile extract. Study objects and methods. The experimental research was carried out on the animal farm of the Kuzbass State Agricultural Academy in 2018. Five experimental groups and one control group of young Californian rabbits were formed according to the principle of analogue pairs. Each group included 10 rabbits. From 70-day age, the animals of the experimental group I were supplemented with a phytobiotic feed additive based on wild chamomile extract at a dose of 0.5 g per rabbit per day. In experimental group II, each rabbit received 1 g per day; in experimental group III, it was 1.5 g per rabbit per day; in experimental group IV – 2.0 g per rabbit per day; in experimental group V – 2.5 g per head per day. The experiment lasted 30 days. Results and discussion. The best result was achieved in experimental group II. In the experimental groups, the rabbits demonstrated an increase in hemoglobin. The use of phytobiotic feed additives in the diet did not cause any pathological changes in internal organs. The average live weight at the end of the experiment, compared with the control group, was higher: experimental group I – by 0.82%, experimental group II – by 6.96%, experimental group III – by 5.01%, experimental group IV – by 3.73%, experimental group V – by 2.80% (P ˃ 0.01). An analysis of the chemical composition of rabbit meat after the experiment showed that the water content in the rabbit meat ranged from 76 to 77%, which suggests high water-holding properties. The high dietary qualities of the rabbit meat depended on the content of protein (20–22 wt%) and the low fat content (5–7%). These data make it possible to promote rabbit meat for dietary products. Conclusion. According to the slaughter indicators and the phytobiotic feed additives parameters of meat, the optimal dose of phytobiotic feed additives is 1 g per head per day.


2018 ◽  
Vol 55 (4) ◽  
pp. 463
Author(s):  
Annu Francis ◽  
R. Balasasirekha

The study was aimed to evaluate the effect of sunlight on vitamin D and calcium status among the college girls, aged 18 – 22 years. One hundred and fifty girls were selected out of which 45 with vitamin D deficiency were considered for experiment. The participants were divided into three groups of 15 each: Experimental I - curd supplementation, exposure to sunlight and nutrition education; Experimental II - exposure to sunlight and nutrition education and Control group with no intervention. Anthropometric measurements, blood haemoglobin, serum vitamin D and calcium were analysed before and after supplementation for 50 days. In the experimental group I, there was a mean increase of 3.22 ng/ml of vitamin D and was significant at 1% level and in the experimental group II the increase was 1.03 ng/ml (significant at 5% level). There was a mean difference of 1.57 ng/ml in the control group which was not significant. The mean initial calcium level in the experimental group I was 9.33 mg/dl and the final value is 9.67 mg/dl and the increase was significant at 1% level. The experimental group II had a mean initial calcium level of 9.36 mg/dl and the mean final value of 9.56 ml g/dl. The mean difference of 0.05 mg/dl was noted in serum calcium before and after supplementation in the control group. The experimental group I showed a positive correlation of 0.035 between vitamin D and sunlight whereas in experimental group II and control group there was a negative correlation of 0.045 and 0.072 respectively. It can be concluded that sunlight had an effect on vitamin D status and the calcium level of the participants further highlighting that sunlight exposure is an effective method of improving the vitamin D status.


2005 ◽  
Vol 284-286 ◽  
pp. 851-854 ◽  
Author(s):  
D.H. Min ◽  
M.J. Kim ◽  
J.H. Yun ◽  
C.S. Kim ◽  
Yong Keun Lee ◽  
...  

This study evaluated periodontal repair and biomaterial reaction following implantation of a newly fabricated calcium phosphate block bone with chitosan membrane on the regeneration of 1-wall intrabony defects in the beagle dogs. The surgical control group received a flap operation only, while the experimental group I was treated with a chitosan nonwoven membrane only and the experimental group II was treated with a chitosan nonwoven membrane and a calcium phosphate block bone. The subjects were sacrificed 12 weeks after surgery and a comparative histometric analysis was done. No root resorption or ankylosis were observed in the experimental group. Mann-Whitney U test showed that the experimental group II produced statistically significant higher gain in connective tissue adhesion, new cementum regeneration and new bone formation. Based on histological results, the calcium phosphate block bone successfully functioned as a osteoconductive scaffold for invading cells of host.


2006 ◽  
Vol 76 (6) ◽  
pp. 1004-1009 ◽  
Author(s):  
Ryo Tomizuka ◽  
Hiroyasu Kanetaka ◽  
Yoshinaka Shimizu ◽  
Akihiro Suzuki ◽  
Kaoru Igarashi ◽  
...  

Abstract Objective: To examine the effects of gradually increasing force generated by permanent rare earth magnets for orthodontic tooth movement by using a novel experimental rat model and computer simulation. Materials and Methods: Fifty-five male rats (age 18 weeks) were used as animal experiments. Magnetic (experimental groups) or titanium (control group) cuboids (1.5 × 1.5 × 0.7 mm) were bonded to the lingual surface of the maxillary first molars. The initial distance between materials was 1.0 mm, generating 4.96 gf (experimental group I), or 1.5 mm, generating 2.26 gf (experimental group II). Tooth movement was measured and periodontal structures were observed with microfocus x-ray computed tomography radiographs. Results: The distance between the magnets decreased with time in experimental groups I and II (P &lt; .001), whereas there was no tooth displacement in the control group. Experimental group I showed rapid tooth movement in the initial phase followed by slower tooth movement. Experimental group II showed gradual tooth movement. Horizontal sections on microfocus computed tomgraphy radiographs revealed no pathological changes, such as root resorption, on the compressed side in the experimental groups. Conclusions: The initial light force and gradual increasing force in magnetic attractive force induced effective tooth movement in rats without inducing any pathological changes.


2016 ◽  
Vol 18 (2(66)) ◽  
pp. 44-48
Author(s):  
V. Gryban ◽  
D. Mylostiva ◽  
E. Pecheniy

The article presents research data on the impact of deficient dietary microelements (cobalt and selenium) and biologically active supplement Humilid  on the indicators of the reproductive function of heifers after the first calving. We have found out that Humilid and trace elements influence on the physiological state of reproductive organs and stimulate the sexual heat of animals. Regarding the duration of the period from calving to fertilized insemination, the difference between the control and experimental groups is more visible. Thus, the service period in the experimental group I (under the influence of Humilid) was 293.2 days, which is 2.6 days less than in the control group. In the experimental group II (under the influence of cobalt and selenium), it was, respectively, by 3.9 days less than in the control one. This may indicate that the minerals and dietary supplements contribute to more rapid recovery of the ovarian cycle. Protein composition of blood serum was investigated in the study of the biochemical spectrum of blood. Balancing the nutrition of animals with deficient dietary microelements and adding Humilid increase the concentration of protein molecules, which is visible from the indicator of crude protein and its components - albumen and globulin.In comparison with animals in the control group, a total protein level of heifers in the experimental group I was higher by 8.8% (P <0.05), and in the experimental group II - by 8.6% (P <0.05). This may indicate the increased intensity of synthetic and redox processes in heifers’ bodies in preovulatory period which serve best for the insemination.The level of albumen was also higher by 8.0 and 7.3% respectively under the influence of Humilid and trace elements in relation to the control group, indicating the improvement of transport of substances, in our case estradiol.As far as globulin is concerned, the growth of this class of proteins was marked by 9.4 and 9.6%, indicating the improvement of the level of resistance of the organism. Thus, the increase in blood biochemical parameters creates certain conditions in heifers’ body to improve their insemination.


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