scholarly journals Influence of adding different levels of local dried Tarragon (Artemisia dracunculus) as a feed additive on production performance of broiler chicks.

2020 ◽  
Vol 22 (1) ◽  
pp. 353-362
Author(s):  
Saman Abdulmajid Rashid ◽  
Keyword(s):  
Production Performance ◽  
Feed Additive ◽  
Broiler Chicks ◽  
Artemisia Dracunculus ◽  
Different Levels

scholarly journals Tolerance and safety evaluation ofN,N-dimethylglycine, a naturally occurring organic compound, as a feed additive in broiler diets

2011 ◽  
Vol 107 (11) ◽  
pp. 1635-1644 ◽  
Author(s):  
Isabelle D. Kalmar ◽  
Martin W. A. Verstegen ◽  
Klaus Maenner ◽  
Jurgen Zentek ◽  
Godelieve Meulemans ◽  
...  
Keyword(s):  
Safety Evaluation ◽  
Growth Period ◽  
Production Performance ◽  
Feed Additive ◽  
Broiler Chicks ◽  
Breast Meat ◽  
Plasma Biochemistry ◽  
Impaired Performance ◽  
Glycine Metabolism ◽  
Present Trial

N,N-dimethylglycine (DMG) is a tertiary amino acid that naturally occurs as an intermediate metabolite in choline-to-glycine metabolism. The objective of the present trial was to evaluate tolerance, safety and bioaccumulation of dietary DMG in broilers when supplemented at 1 g and 10 g Na-DMG/kg. A feeding trial was conducted using 480 1-d-old broiler chicks that were randomly allocated to twenty-four pens and fed one of three test diets added with 0, 1 or 10 g Na-DMG/kg during a 39 d growth period. Production performance was recorded to assess tolerance and efficacy of the supplement. At the end of the trial, toxicity was evaluated by means of haematology, plasma biochemistry and histopathology of liver, kidney and heart (n12), whereas bioaccumulation was assessed on breast meat, liver, blood, kidney and adipose tissue (n8). Carcass traits were similar between the control and 1 g Na-DMG/kg feed groups (P>0·05), but the feed:gain ratio was significantly improved at 1 g Na-DMG/kg feed compared with the control or the 10-fold dose (P = 0·008). Histological examinations showed no pathological effects and results of haematology and plasma biochemistry revealed similar values between the test groups (P>0·05). Bioaccumulation occurred at the 10-fold dose, but the resulting DMG content in breast meat was comparable with, for instance, wheat bran and much lower than uncooked spinach. In conclusion, DMG at 1 g Na-DMG/kg improved the feed:gain ratio in broilers without DMG being accumulated in consumer parts. Furthermore, dietary supplementation with DMG up to 10 g Na-DMG/kg did not induce toxicity or impaired performance in broilers.

scholarly journals Efficacy of exogenous phytase supplementation on production performance of commercial broiler

2017 ◽  
Vol 45 (3) ◽  
pp. 31-39
Author(s):  
E Parvin ◽  
MA Khatun ◽  
T Yeasmin ◽  
MM Sharmin
Keyword(s):  
Basal Diet ◽  
Production Performance ◽  
Feed Consumption ◽  
Feed Additive ◽  
Control Group ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
Net Profit ◽  
Commercial Broiler ◽  
Diet Control

An experiment was conducted to investigate the effect of supplementing of exogenous phytase enzyme on productivity of commercial broilers. Four strains of commercial broiler such as Fast feather, Arbor acres, Cobb-500 and Hubbard classic each having 78 numbers were reared for a period of 5 weeks. A total number of 312 day old broiler chicks were distributed into two dietary treatments i.e. basal diet (Control-T0) and basal diet supplemented with phytase enzyme 1g/kg feed (supplemented-T1). The results indicated that broilers fed on diets supplemented with phytase have gained more body weight when compared with control group (P<0.05). The first and second highest body weights were recorded for the strains Cobb-500 and First feather broilers, respectively, which feed on diet containing phytase.   Feed consumption varied significantly between the broilers on different dietary regimes. Significant differences (P<0.01) were found in feed conversion ratios among the birds fed on diet with phytase enzyme. The lowest feed conversion ratio was in Cobb-500 fed on phytase diet where as the highest was in Fast Feather provided with only basal diet during the 5th week of age. Average feed conversion ratios were 1.73 and 1.86 for the supplemented and control group respectively. Use of phytase as feed additive in the diet resulted in high profitability/ broiler. Net profit per live broiler was the also higher in treatment group compared with control groups of birds. The highest net profit per live broiler was observed in Arbor Across strains fed on phytase diet. The result of the present study suggests that the addition of dietary phytase enzyme in the diet of broiler may increase the production performance and reduce the cost of production.Bang. J. Anim. Sci. 2016. 45 (3): 31-39

scholarly journals EFFECTS OF THE ADDITION OF AQUEOUS LIQUORICE (Glycyrrhiza glabra) EXTRACT TO DRINKING WATER IN THE PRODUCTION PERFORMANCE, CARCASS CUTS AND INTESTINAL HISTOMORPHOLOGY OF BROILER CHICKENS

2019 ◽  
Vol 50 (3) ◽  
Author(s):  
Beski & et al.
Keyword(s):  
Drinking Water ◽  
Broiler Chickens ◽  
Experimental Period ◽  
Production Performance ◽  
Broiler Chicks ◽  
Liquorice Extract ◽  
Medium Level ◽  
Intake Water ◽  
Different Levels ◽  
Carcass Cuts

This study was undertaken to investigate the effect of aqueous liquorice extract (ALE) on the growth performance, carcass cuts and intestinal histomorphology of broiler chickens between hatch and 35 days of age. A total of 160-d old (Ross 308) broiler chicks were randomly assigned to 4 treatments, each with 4 replicates, 10 birds per replicate. Four different levels of aqueous liquorice (0, 0.5, 0.7 and 0.9g) were administrated to a liter of drinking water and offered to the birds throughout the entire experimental period. Across the 35 days of trial, administration of ALE to the drinking water resulted in higher (P<0.05) body weight and weight gain. While, feed intake, water intake and FCR did not influence by ALE administration. On the other hand, there was no significant effect of the ALE on carcass cuts, visceral organs and intestinal histomorphology. The study demonstrated that ALE could be administrated to the drinking water of broilers between 0.5 and 0.9g/ liter. However, it would be more economical to use the medium level of ALE (0.7g/ liter) to achieve better results.  

scholarly journals Effects of Bacillus subtilis on Production Performance, Bone Physiological Property, and Hematology Indexes in Laying Hens

Animals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 2041
Author(s):  
Xinyu Zou ◽  
Sha Jiang ◽  
Mi Zhang ◽  
Haiqiang Hu ◽  
Xiaoling Wu ◽  
...  
Keyword(s):  
Bacillus Subtilis ◽  
Egg Production ◽  
Laying Hens ◽  
Maximum Load ◽  
Physiological Property ◽  
Production Performance ◽  
Feed Additive ◽  
Basic Diet ◽  
Bone Damage ◽  
Diet Control

This study was to investigate the effects of Bacillus subtilis on production performance and bone pathophysiological characteristics of layers. Twenty-four 48-week-old Lohmann Pink-shell laying hens were randomly divided into two groups: a basic diet (control) and the basic diet mixed with Bacillus subtilis (0.5 g/kg) for a 60-day trial. Statistically, independent-sample t-test was used to assess the treatment differences. The results showed that Bacillus subtilis supplementation improved the percent of marketable eggs (p < 0.05) with reduced numbers of broken and soft-shelled eggs but had no effects on egg weight, height of albumen, yolk color, and Haugh unit (p > 0.05). Bacillus subtilis supplement also elevated maximum load (p = 0.06), maximum stress (p = 0.01), stiffness (p < 0.01), and Young’s modulus (p < 0.01) but suppressed maximum strain (p = 0.06) in the femur. In addition, compared with control birds, phosphorous concentration (p < 0.01) was reduced in serum at day 61 but increased in the femur (p < 0.05) in Bacillus subtilis fed birds. Bacillus subtilis fed birds also had lower magnesium concentrations in both femur (p = 0.04) and feces (p = 0.09). Furthermore, Bacillus subtilis increased plasma estrogen concentration (p = 0.01) and femur TNF receptor superfamily member 11b (OPG) expression (p < 0.05) but reduced plasma IL-1 (p < 0.01) and TNF-α (p < 0.01) concentrations. These results indicate that Bacillus subtilis could be used as a health promotor to reduce overproduction-induced inflammation and associated bone damage and to increase marketable egg production. The data provide evidence for developing a management strategy to use Bacillus subtilis as a feed additive to improve marketable egg production and health and welfare status of laying hens.

scholarly journals Effect of energy to protein ratio using alternative feed ingredients on growth performance and nutrient digestibility in broilers

2019 ◽  
Author(s):  
M. Alqazzaz ◽  
A.A. Samsudin ◽  
L.H. Idris ◽  
D. Ismail ◽  
H. Akit
Keyword(s):  
Growth Performance ◽  
Body Weight Gain ◽  
Control Diet ◽  
Nutrient Digestibility ◽  
Feed Consumption ◽  
Broiler Chicks ◽  
Protein Ratio ◽  
Feed Ingredients ◽  
Black Soldier Fly Larvae ◽  
Different Levels

Present study was conducted to evaluate the different levels of energy to protein ratios (EPR) using food waste and black soldier fly larvae meal (FWBSFL) on growth performance and nutrient digestibility of broilers. A total of 160 one-day old broiler chicks were divided randomly to four groups and each group had 8 replicates with 5 chicks per replicate. The control diet was formulated using conventional feed ingredients with EPR of 154 for the starter period and 167 for the finisher period. The other treatments were diets with normal, low, and high EPR (154,143, and 166 for the starter period; 167, 155, and 177 for the finisher period) using FWBSFL. Feed consumption and body weight gain as well as digestibility of crude protein, crude fiber, and fat were decreased due to feeding of FWBSFL diets. Different levels of EPR using FWBSFL decreased growth performance and nutrient digestibility of broilers.

scholarly journals Effects of Different Methionine Levels in Low Protein Diets on Production Performance, Reproductive System, Metabolism, and Gut Microbiota in Laying Hens

2021 ◽  
Vol 8 ◽  
Author(s):  
Miaolin Ma ◽  
Shunju Geng ◽  
Meiling Liu ◽  
Lihong Zhao ◽  
Jianyun Zhang ◽  
...  
Keyword(s):  
Reproductive System ◽  
Laying Hens ◽  
Production Performance ◽  
Protein Diet ◽  
Low Protein Diet ◽  
Microbial Composition ◽  
Low Protein ◽  
System Metabolism ◽  
Protein Diets ◽  
Different Levels

This study investigated the effects of different levels of methionine (Met) in a low protein diet on the production performance, reproductive system, metabolism, and gut microbial composition of laying hens to reveal the underlying molecular mechanism of Met in a low protein diet on the host metabolism and gut microbial composition and function of hens. A total of 360 healthy 38-week-old Peking Pink laying hens with similar body conditions and egg production (EP) were randomly divided into four groups with nine replicates per treatment and 10 hens per replicate. The hens in each treatment group were fed low protein diets containing different levels of Met (0.25, 0.31, 0.38, and 0.47%, respectively) for 12 weeks. Feed and water were provided ad libitum throughout the trial period. The results showed that, compared with the 0.25% Met group, the final body weight (FBW), average daily gain (ADG), EP, egg weight (EW), and average daily feed intake (ADFI) in the other groups were significantly increased and feed egg ratio (FER) was decreased. Meanwhile, the EW and yield of abdominal fat (AFY) in the 0.47% Met group were higher than those in other groups. The triglyceride (TG), estradiol (E2), total protein (TP), albumin (ALB), and immunoglobulin A (IgA) in the 0.38 and 0.47% Met groups were higher than those in other groups. In addition, 16S rRNA gene sequencing revealed that there was no difference in the Sobs index, ACE index, and Shannon index among all groups. However, it is worth noting that feeding low protein diets with Met changed the gut microbial composition (e.g., the supplementation of Met increased the level of Lactobacillus and decreased the proportion of Faecalibacterium). Also, our results showed that the changes in gut microbial composition induced by the diets with different levels of Met were closely related to the changes of key parameters: ADFI, EW, FBW, TG, EM, EP, ADG, FER, and uric acid (UA). Our results highlight the role of adding an appropriate amount of Met to the low protein diet in laying hens, which could improve the gut microbial composition, production performance, reproductive system, and nutrient metabolism of laying hens. In conclusion, this study suggested that when the Met level was 0.38%, the production performance of the laying hens was pretty good.

scholarly journals Influence of reproductive qualities on dairy productivity of cows of the Simmental breed

2021 ◽  
Vol 285 ◽  
pp. 04005
Author(s):  
Maria Grinchuk ◽  
Yulia Nesterova
Keyword(s):  
Milk Production ◽  
Milk Yield ◽  
Mass Fraction ◽  
Milk Protein ◽  
Production Performance ◽  
Dry Period ◽  
Milk Productivity ◽  
Service Period ◽  
Positive Effect ◽  
Different Levels

The aim of work is to explore influence of first fruitful insemination, service period and dry period to dairy productivity of Simmental cows. The research is aimed at studying the milk production of Simmental cows with different levels of reproductive qualities. The result of the research, a relation was established between the age of the first fruitful insemination, the duration of the service period, the duration of the dry period and milk production performance. It has been established that the age of the first fruitful insemination at 18-24 months has the most beneficial effect on subsequent milk production. The service period of 90-120 days has a positive effect to an increase in milk yield per 305 days of lactation, the longer service period negatively affects to the mass fraction of fat. With an increase in the duration of the dry period, the mass fraction of fat increases, but milk yield decreases. The influence of reproductive qualities to the milk protein is negligible. It was revealed that the age of the first insemination at 18-24 months is the most profitable for production. According to the results of the research, it can be judged that reproductive qualities, in combination with other factors, affect the milk productivity of Simmental cows.

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