Effects of strain, antibiotic supplement and diet calcium level on chick growth and feed conversion and on utilization of dietary energy and nitrogen

1971 ◽  
Vol 11 (51) ◽  
pp. 383 ◽  
Author(s):  
JK Connor ◽  
AR Neill
Keyword(s):  
Body Weight ◽  
Growth Rates ◽  
Calcium Level ◽  
Nitrogen Retention ◽  
Metabolizable Energy ◽  
Feed Consumption ◽  
Dietary Energy ◽  
Feed Conversion ◽  
Chick Growth ◽  
Commercial Broiler

The effects of two antibiotics and four calcium levels on body weight, feed consumption and conversion, metabolizable energy, and nitrogen retention of two commercial broiler strains were examined in an experiment conducted from day-old to eight weeks of age. Comparable growth rates were obtained for both strains on diets containing from 1.1 to 1.7 per cent calcium. Efficiencies of feed conversion and metabolizable energy and nitrogen retention values were not significantly influenced by diet calcium level. Although both antibiotics gave comparable weight gains and efficiencies of feed conversion, metabolizable energy and nitrogen retention were significantly higher when bacitracin was fed as opposed to chlortetracycline. More energy was metabolized and more nitrogen was retained per unit of diet by the slower growing broiler strain.

scholarly journals Effect of Varied Levels of Dietary Crude Protein and Metabolizable Energy on Growth Performance in Giriraja Chicken

2017 ◽  
Vol 12 (4) ◽  
Author(s):  
H. N. Rajeswara ◽  
Jaya Naikand ◽  
C. S. Nagaraja
Keyword(s):  
Body Weight ◽  
Growth Performance ◽  
Crude Protein ◽  
Body Weight Gain ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Metabolizable Energy ◽  
Feed Consumption ◽  
Feed Conversion ◽  
Dietary Crude Protein

A study was conducted for 56 days to observe the effect of varied levels of dietary crude protein and metabolizable energy on growth performance in 720 day-old Giriraja chicks, which were divided equally into nine groups of 80 birds each. Nine different experimental diets were formulated with three levels 2700, 2800, and 2900 kcal of metabolizable energy (ME/kg), each with three levels of protein (CP), viz., 19%, 20%, and 21%, respectively and Group T5 served as control fed with 20% protein and 2800 kcal energy as per BIS (2007) requirements. Feed consumption, body weight gain, and feed conversion ratio (FCR) were analysed up to 56 days. The results of the study indicated that diet containing 20% CP with 2900 kcal ME/kg showed enhanced growth performance in Giriraja chicks.

scholarly journals Effects of Probiotic, Prebiotic, and Synbiotic Mixed Culture Based on Wheat Pollard on Productivity of Kampung’s Chicken

2020 ◽  
Vol 25 (4) ◽  
pp. 196
Author(s):  
Cahya Setya Utama ◽  
Zuprizal Zuprizal ◽  
Chusnul Hanim ◽  
Wihandoyo Wihandoyo
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Mixed Culture ◽  
Nitrogen Retention ◽  
Feed Consumption ◽  
Feed Conversion ◽  
Intestinal Villus ◽  
Final Body Weight ◽  
Randomized Design ◽  
Small Intestinal Villus

<p>This research was aimed to assess the effectiveness of processed wheat pollard -based rations to increase the productivity of Kampung chickens raised until 8 weeks old. The research was carried out in a completely randomized design with 5 treatments and 4 replications. The treatments consisted of wheat pollard based ration (WP), wheat pollard based ration plus probiotic mixed culture (WPPro), wheat Pollard as prebiotic mixed (WPPre)            , wheat pollard as synbiotic mixed culture ration 40% (WPS40), wheat pollard as synbiotic mixed culture ration 60% (WPS60)   . The parameters observed were feed consumption, final body weight, feed conversion ratio (FCR), weight gain, nitrogen retention, income over feed and chick cost (IOFCC) and profiles of intestinal villus. Results showed a significant effect of the treatments on the final body weight, weight gain, nitrogen retention, IOFCC and profiles of small intestinal villus (duodenum, jejenum, ileum). It was concluded that the inclusion of 40% wheat pollard synbiotic mixed culture (WPS 40) in the ration was able to increase the productivity of kampung chickens reared until 8 weeks old.</p>

Effects of dietary energy concentration on production of broiler chickens

1976 ◽  
Vol 16 (82) ◽  
pp. 672 ◽  
Author(s):  
DJ Farrell ◽  
JB Hardaker ◽  
ID Greig ◽  
RB Cumming
Keyword(s):  
Total Energy ◽  
Broiler Chickens ◽  
Metabolizable Energy ◽  
Total Weight ◽  
Feed Consumption ◽  
Energy Concentration ◽  
Dietary Energy ◽  
Feed Conversion ◽  
Dressing Percentage

Eight least-cost diets with a determined range of metabolizable energy (ME) concentrations from 9.3 to 14.3 MJ kg-1 were formulated. Each diet was offered for about 12 weeks to two pens of about 100 broilers of each sex. Observations on feed consumption, liveweight and mortality were made weekly for each pen. Dressing percentages were recorded for samples of ten birds from each pen at two different Iiveweights. As ME concentration of the diets increased, birds grew faster and required less food, in terms of both total weight and total energy, to reach specified liveweights, although these effects were not marked when the dietary ME concentration was above 13.5 MJ kg-1. Feed conversion was less efficient at the same ME concentration when birds of each sex were taken to higher liveweights. Dressing percentage increased with increases in dietary ME concentration for males, but for females it tended to decline at the highest energy concentrations. Mortality was the same (2 per cent) on all diets.

scholarly journals Use of non-antibiotic growth promoter “Grow Power” in commercial broiler diet

2015 ◽  
Vol 44 (1) ◽  
pp. 33-39
Author(s):  
MF Hossain ◽  
M Khairunnesa ◽  
SC Das
Keyword(s):  
Body Weight ◽  
Body Weight Gain ◽  
Experimental Period ◽  
The Body ◽  
Feed Consumption ◽  
Broiler Chicks ◽  
Growth Promoter ◽  
Feed Conversion ◽  
Commercial Broiler ◽  
Dietary Treatments

An experiment was conducted with 160, day old Cobb 500 broiler chicks to evaluate the effect of supplementation of Grow Power (GP) on the performance of broiler. The dietary treatments were control (D1), Grow Power (D2), Grow Power plus antibiotic (D3) and antibiotic (D4). At 5th week of age, the body weight of birds at different dietary treatments were 938.75, 1105.00, 1136.25, and 985.00g in the diets of D1, D2, D3 and D4, respectively. Body weight gain at 2nd, 3rd and 4th week of age were significantly (P<0.05) higher in GP supplemented group (D2) and GP plus antibiotic group (D3) than that of control (D1) and antibiotic (D4) groups. Feed consumption during the experimental period was 1753.75, 1938.75, 1917.50 and 1774.50g for D1, D2, D3 and D4, respectively. At 2nd and 3rd week of age, feed consumption were significantly (p<0.05) higher in D3 group than the other groups including control. Significantly (P<0.05) better Feed Conversion Ratio (FCR) was found in D3 (2.03) and D2 (2.11) groups compared to D1 (2.31) and D4 (2.28).  At 3rd, 4th and 5th week of age, the Performance Index (%) was significantly higher in D2 than D1 and D4. Meat yield parameter of broilers showed significant (P<0.05) differences in dressing weight, feather weight, shank weight, drumstick weight, neck weight, liver weight and viscera weight. Based on the results obtained from the current study it may be concluded that the inclusion of Grow Power @ 50gm/100kg of mixed feed with or without antibiotic improved the growth of commercial broiler including their FCR and therefore, this product may be considered as an alternative of traditional antibiotic in broiler diet.DOI: http://dx.doi.org/10.3329/bjas.v44i1.23139Bang. J. Anim. Sci. 2014. 44 (1): 33-39 

scholarly journals THE VALUE OF DRIED AFRICA LOCUST BEAN PULP FOR THE FOWL

2021 ◽  
Vol 4 (2) ◽  
pp. 76-80
Author(s):  
J. A. Oluyemi
Keyword(s):  
Body Weight ◽  
Nitrogen Retention ◽  
Dietary Treatment ◽  
The Body ◽  
Metabolizable Energy ◽  
Feed Conversion ◽  
Locust Bean ◽  
African Locust Bean ◽  
Dietary Treatments ◽  
Haugh Unit

Locally obtained dried pulp of the fruit of African locust bean (Parka filicoidea) was included at the rates of 2.5, 5.0, 7.5, 10.0%, at the expense of maize , in the diets of chicks and of pullets whose basal diets contained 25.5% and 18.0% respectively. The chicks were White Rock X Cornish (WRXC)and the Nigeria indigenous (Ind.). The six week body weight of the chicks were reduced to 648.2g (WRXC) on 2.5% and 425.3g (Ind.) on 5.0% dietary pulp, pulp. Beyond thee respective dietary levels of pulps, the body weight of the strains were significantly (P < 0.05) depressed. The feed conversion ration (2.8 – 3.1) mortality (1.7 – 2.5%), nitrogen retention (59.7 – 69.5) of the chicks and the metabolizable energy of the diets, (12.1 -12.9 MJ/kg., ME) were not significantly (P > 0.05) affected by dietary treatments. However, the better values with these traits were associated with the basal diets and were in respect of the WRXC chicks. The hen day production, egg weight and liveweight gain of the layers were significantly (P < 0.05) depressed when dietary pulp attained 7.5% (50.8%), 10.0% (53.5g) and 10.0% (132.1g) respectively. The yolk colour score (9 - 14) was significantly (P < 0.05) improved at 7.5 – 15.0% dietary pulp while feed conversion ration (2.7 – 4.9) and Haugh Unit (76.1 – 78.1) were not significantly (P > 0.05) affected by dietary treatment. The price of the pulp in relation to that of maize suggested that it was economic to replace maize to at least 2.5%and 5.0% in the diets of chicks and of the layers respectively

THE EFFECT OF (Morinda citrifolia L.) MEAL IN DIET ON PERFORMANCE OF BROILER

2012 ◽  
Vol 2 (1) ◽  
pp. 21-27
Author(s):  
Yosi Fenita
Keyword(s):  
Body Weight ◽  
Body Weight Gain ◽  
Morinda Citrifolia ◽  
Feed Consumption ◽  
Feed Conversion ◽  
Randomized Design ◽  
Different Levels ◽  
Effect Of Feeding ◽  
Average Body ◽  
Average Body Weight

The objective of the research was to evaluate to effect of feeding mengkudu on performances of broilers. The research design used was completely randomized design. One hundred broilers were distributed into five treatments. The treatments were different levels of mengkudu meal (0, 0.75%, 1.5%, 2.25 % and 3%). The observed measured were feed consumption, average body weight (gain) and feed conversion. Results showed that feeding mengkudu (Morinda Citrifolia L.)  no effect significant (P>0.05) on feed consumption, average body weight and feed conversion.  In conclusion, feeding mengkudu meal up to 3% (in diet) does not negatively affect feed consumption, average body weight, and feed conversion.

scholarly journals The Effects of Feed Color on Broiler Performance between Day 1 and 21

Animals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1511
Author(s):  
Joseph P. Gulizia ◽  
Kevin M. Downs
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Treatment Effects ◽  
Body Weight Gain ◽  
Experimental Period ◽  
Feed Consumption ◽  
Feed Conversion ◽  
Broiler Performance ◽  
Average Body ◽  
Average Body Weight

Two trials were conducted to determine feed color effects on broiler performance. A completely randomized design was used. Trial 1 included four treatments: control (complete broiler starter diet), red, green, and blue; and Trial 2 included four treatments: control, orange, yellow, and purple. Each trial had 4 treatments with 4 replicates (60 birds/treatment) fed to 240 male Cobb 500 broilers during a 21 d grow out. Data were analyzed using the GLM procedure. In Trial 1, there were no treatment effects on average body weight, body weight gain, and feed consumption (p > 0.05). Adjusted feed conversion for control (1.23) was less than red (1.27; p = 0.001) and green (1.26; p = 0.009), with blue (1.25; p = 0.056) tending to be different during the experimental period. In Trial 2, there were no treatment effects on average body weight, feed consumption, and adjusted feed conversion during this study (p > 0.05). Body weight gain between d 1 to 14 for purple (490.78 g/bird) was more than orange (467 g/bird; p = 0.013) and yellow (461 g/bird; p= 0.004), with control (474 g/bird; p = 0.052) tending to be different. Results indicate that these feed colors had some, albeit limited, influence on broiler performance parameters.

scholarly journals The Effect of Dietary Halloysite Supplementation on the Performance of Broiler Chickens and Broiler House Environmental Parameters

Animals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 2040
Author(s):  
Małgorzata Nadziakiewicz ◽  
Marcin Wojciech Lis ◽  
Piotr Micek
Keyword(s):  
Body Weight ◽  
Broiler Chickens ◽  
Body Weight Gain ◽  
Environmental Parameters ◽  
Feed Consumption ◽  
Feed Additive ◽  
Feed Conversion ◽  
Daily Body Weight ◽  
Daily Water ◽  
Broiler House

The aim of the study was to determine the effect of supplementing broiler chickens’ diets with halloysite on daily body weight gain (BWG), feed conversion ratio (FCR), daily water consumption (DWC), and some broiler house hygiene parameters. The trial was conducted on 18,000 broiler chickens divided into two groups throughout the 42-day (D) rearing period. The birds were fed complete diets without (group C) or with halloysite addition (1%, group E) from D8 of rearing. No difference in the mortality rate was observed between groups C and E. Birds from group E had a tendency (0.05 < p < 0.10) towards a higher body weight at D32 and D42, a higher BWG, and a lower FCR compared to group C during the entire rearing period. Average DWC differed only in the finisher period, with a tendency towards lower overall DWC in group E. The concentration of ammonia in the air from D21 to D35 was increased more than 5-fold in group C but only 1.5-fold in group E. In conclusion, the use of halloysite as a feed additive in the diet of broiler chickens resulted in a reduction in feed consumption per unit of BWG and higher utilisation of crude protein, which led to improved environmental conditions.

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 Metabolizable energy levels in diets with a fixed nutrient: calorie ratio for free-range broilers

2021 ◽  
Vol 42 (6supl2) ◽  
pp. 4009-4022
Author(s):  
Thiago Rodrigues da Silva ◽  
◽  
Karina Márcia Ribeiro de Souza Nascimento ◽  
Charles Kiefer ◽  
Luanna Lopes Paiva Copat ◽  
...  
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Energy Level ◽  
Body Fat ◽  
Feed Intake ◽  
Carcass Characteristics ◽  
Metabolizable Energy ◽  
Production Performance ◽  
Feed Conversion ◽  
Protein Deposition

The present study proposes to examine the effect of dietary levels of metabolizable energy, under a fixed nutrient:calorie ratio, on the production performance; body fat and protein deposition; and carcass characteristics of free-range broilers from 1 to 84 days of age. Nine hundred unsexed chicks were allocated to six treatments in a completely randomized design with six replicates of 25 birds each. Treatments consisted of diets with varying levels of metabolizable energy (2700, 2800, 2900, 3000, 3100 and 3200 Kcal ME/kg of diet) and a fixed proportion of nutrients relative to the energy level according to the nutritional requirements for each rearing phase. Body weight, weight gain, feed intake, feed conversion, production viability, metabolizable energy intake, protein intake, lysine intake, body fat deposition, body protein deposition and carcass characteristics were evaluated. Data were subjected to analysis of variance and, later, to regression analysis. Increasing levels of metabolizable energy, coupled with a fixed nutrient:calorie ratio, reduced feed intake, increased body weight and weight gain, improved feed conversion and did not affect carcass characteristics. In conclusion, adjusting the nutrient supply according to the dietary energy level improves production performance by improving feed conversion, ensuring adequate nutrient intake and preserving fat and protein deposition in the carcass when the metabolizable energy level is raised up to 3200 Kcal/kg in all rearing stages.

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