scholarly journals THE RESPONSE OF MALE BROILER CHICKS TO THE CONSUMPTION OF LOW LEVELS OF CHLORTETRACYCLINE AS A GROWTH PROMOTER

1988 ◽  
Vol 68 (4) ◽  
pp. 1285-1290
Author(s):  
F. G. PROUDFOOT ◽  
H. W. HULAN ◽  
E. D. JACKSON
Keyword(s):  
Broiler Chickens ◽  
Broiler Chicken ◽  
Divalent Cations ◽  
Broiler Chicks ◽  
Growth Promoter ◽  
Feed Conversion ◽  
Feed Supplementation ◽  
Body Weights ◽  
Low Levels ◽  
Conversion Efficiencies

Three thousand two hundred male broiler chickens were used to evaluate the efficacy of chlortetracycline (CTC) as a growth promoter when used in compliance with the present maximum feed-supplementation rate permitted in Canada (5.5 mg kg−1). No significant (P > 0.05) improvements in 21- and 42-d live body weights or feed conversion efficiencies were observed, regardless of the method of administration (feed or water). Changes to the sources of dietary calcium and phosphorus in an attempt to circumvent antibiotic inactivation by divalent cations also failed to potentiate any effect of this level of CTC. It is suggested that, if adequate attention is paid to the diet and health of broiler stocks, no further gains will be realized through feed supplementation with 5.5 mg kg−1 CTC. Key words: Diets, antibiotics, aureomycin, chlortetracycline, broiler chicken

scholarly journals Arsanilic acid as a growth promoter for chicken broilers when administered via either the feed or drinking water

1991 ◽  
Vol 71 (1) ◽  
pp. 221-226 ◽  
Author(s):  
F. G. Proudfoot ◽  
E. D. Jackson ◽  
H. W. Hulan ◽  
C. D. C. Salisbury
Keyword(s):  
Drinking Water ◽  
Broiler Chickens ◽  
Economic Effects ◽  
Broiler Chicks ◽  
Growth Promoter ◽  
Feed Conversion ◽  
Acid Growth ◽  
Arsanilic Acid ◽  
Body Weights ◽  
Slaughter Age

Two thousand four hundred male broiler chicks were used in three experiments to evaluate the biological and economic effects of using arsanilic acid as a growth promoter. In two experiments four treatments were (A) control diets (CD); (B) CD plus 99 mg kg−1 arsanilic acid; (C) CD plus drinking water containing arsanilic acid calculated to achieve equivalent exposure to treatment B; and (D) same as treatment C except arsanilic acid concentration reduced by 50%. A third experiment evaluated the dietary addition of arsanilic acid at 0, 33, 66 and 99 mg kg−1. Arsanilic acid supplementation had no significant (P > 0.05) effect on mortality, feed conversion, final live body weights or monetary returns at slaughter age (42 d). Analysis of breast, thigh and liver tissues using method with a sensitivity of 0.02 mg kg−1 showed a significant increase in liver arsenic residues when supplemented diets were fed to slaughter age. Withdrawal of arsanilic acid from diets 7 d prior to slaughter returned the arsenic residues to normal background (control) levels. It is concluded that the use of arsanilic acid at dietary concentrations up to 99 mg kg−1 (the maximum permissible in Canada) was ineffective in improving either the biological or economic performance of broiler chickens. Key words: Arsanilic acid, growth promoter, broiler chickens

scholarly journals Effects of Turmeric Powder on Clostridium Perfringens Load in Broiler Chickens

2020 ◽  
Vol 18 (1) ◽  
pp. 209-218
Author(s):  
MZ Ali ◽  
MM Islam ◽  
S Zaman
Keyword(s):  
Clostridium Perfringens ◽  
Broiler Chickens ◽  
Economic Problem ◽  
Broiler Chicks ◽  
Growth Promoter ◽  
Necrotic Enteritis ◽  
Feed Conversion ◽  
Control Groups ◽  
Treatment Groups ◽  
Environment Control

Necrotic enteritis (NE) is a major economic problem in broiler industry globally and is caused by Clostridium perfringens. The aim of the study was to know the effects of turmeric on C. perfringens in broiler chickens. A total of 3000-day-old Cobb 500 broiler chicks were divided into 6 groups and reared in environment control sheds with similar management. Each group contains 500 chicks and again divided into two subgroups as control and treatment with 250 chicks. In treatment groups added 2gm/kg turmeric powder with basal feeds and reared up to 30 days and follow standard vaccine schedule. Intestinal samples were collected every week from each group to detect C. perfringens load. Bodyweight gain, feed conversion ratio (FCR) and mortality rates were also calculated. The findings were loads of C. perfringens in treatment groups decreased significantly compared to control groups. At 4th week average count of C. perfringens was 4.44±0.12 log CFU/g and 2.68±0.17 log CFU/g in control and treatment groups, respectively. Average chick’s mortality decreased significantly in treatment groups. The flock mortality was decreased significantly in treatment groups (1.40%) compared to control groups (2.17%). The FCR become significantly decreased in treatment groups (1.490) compared to control groups (1.571). Therefore, use of turmeric powder in broiler ration can reduce NE by decreasing C. perfringens loads and it could be a good source of non-antibiotic growth promoter in poultry towards reduce antibiotic resistance and consumer will get a pathogen free rich protein source. SAARC J. Agri., 18(1): 209-218 (2020)

scholarly journals Phytogenic additive as an alternative to growth promoters in broiler chickens

2009 ◽  
Vol 39 (2) ◽  
pp. 522-527 ◽  
Author(s):  
Gerson Neudí Scheuermann ◽  
Anildo Cunha Junior ◽  
Lucas Cypriano ◽  
Alexandre Mossate Gabbi
Keyword(s):  
Body Weight ◽  
Broiler Chickens ◽  
Positive Control ◽  
Negative Control ◽  
Feed Additive ◽  
Broiler Chicks ◽  
Growth Promoter ◽  
Feed Conversion ◽  
Growth Promoters ◽  
The Cost

This study evaluated a phytogenic feed additive for broiler chickens. A total of 1,632 broiler chicks were distributed into four treatments: negative control (without growth promoter); positive control (avilamycine, 10ppm + colistin, 15ppm); and two alternative treatments with 150ppm of phytogenic additive, one with a reduced Ca and P levels diet (PA-R1) and the other with lower energy, and amino acids, besides Ca and P (PA-R2). The trial was conducted with 12 replicates, each consisted of a pen with 34 birds. The alternative diets showed body weight intermediate to the two controls at 42 days, with no significant (P>0.05) treatment effect on feed conversion ratio. No treatment differences (P>0.05) on carcass yield and composition was observed. There was a tendency of abdominal fat lipids saturation, when the phytogenic additive was used, as possible consequence of a decreased level of soybean oil in the diets. A difference (P<0.001) on ingredient consumption profile was observed between the treatments. All together, this study showed a possibility to reduce the cost of total feed used to produce a broilers or a ton of body weight by the utilization of the tested phytogenic additive.

Growth performance and spleen and bursa weight of broilers fed yeast beta-glucan

2008 ◽  
Vol 88 (3) ◽  
pp. 469-473 ◽  
Author(s):  
B. M. Rathgeber ◽  
K. L. Budgell ◽  
J. L. MacIsaac ◽  
M. A. Mirza ◽  
K. L. Doncaster
Keyword(s):  
Broiler Chickens ◽  
Broiler Chicken ◽  
Growth Promotion ◽  
Bursa Of Fabricius ◽  
Feed Conversion ◽  
Feed Ingredient ◽  
Beta Glucan ◽  
Treatment Groups ◽  
Body Weights ◽  
Growth Promoting

This study evaluated the efficacy of a yeast beta-glucan product (YBG) as a growth-promoting feed ingredient for broilers. Two trials were conducted with day-old chicks assigned to 24 pens (38 birds/pen) and one of three diets: no growth promotant, virginiamycin, or YBG. On days 14 and 38, two birds per pen were euthanized and the spleen and bursa of Fabricius were removed. In the first trial, body weights of birds from each treatment were the same until 38 d, when control birds were smaller (P < 0.05). In the second trial, 38-d body weights were the same for all treatments. A third trial was conducted with half the number of pens per treatment. In the third trial, controls were smaller than YBG at 38 d, but not smaller than virginiamycin. Feed conversion was not affected by diet in trials 2 and 3 but for trial 1 the control birds had poorer conversion than virginiamycin (P < 0.05), but not worse than YBG. Spleen weights were not different between treatment groups. Bursa weights decreased with age for all treatments in trials 2 and 3, but not in trial 1 for controls. These results indicate that YBG is as effective as virginiamycin in promoting growth of broiler chickens. Key words: Broiler chicken, antibiotic, yeast, beta-glucan, growth promotion

scholarly journals Supplementation of chicory root powder as an alternative to antibiotic growth promoter on gut pH, gut microflora and gut histomorphometery of male broilers

PLoS ONE ◽  
2021 ◽  
Vol 16 (12) ◽  
pp. e0260923
Author(s):  
Srinivas Gurram ◽  
Chinni Preetam. V. ◽  
Vijaya Lakshmi. K. ◽  
Raju. M. V. L. N. ◽  
Venkateshwarlu. M. ◽  
...  
Keyword(s):  
Broiler Chicken ◽  
Body Weight Gain ◽  
Basal Diet ◽  
Cell Number ◽  
Broiler Chicks ◽  
Growth Promoter ◽  
Feed Conversion ◽  
Treatment Groups ◽  
Chicory Root ◽  
Antibiotic Control

The experiment was conducted to study the effect of chicory root powder on the gut performance of broilers. For this purpose, two hundred commercial male broiler chicks were randomly divided into 5 treatment groups with 8 replications of 5 birds each and reared in battery brooders up to 42 days of age. The experimental design consisted of; T1 basal diet (BD) without antibiotic, T2: BD + antibiotic (BMD at 500 gm/ton), T3: BD + chicory root powder (0.5%), T4: BD + chicory root powder (1.0%), T5: BD + chicory root powder (1.5%). The results revealed that supplementation of 1.0% chicory root powder recorded significantly (P<0.05) higher body weight gain, feed intake and better feed conversion ratio (FCR) compared to antibiotic, control and 0.5 & 1.5% chicory powder at 42 days of age. Supplementation of various levels of chicory root powder significantly (P<0.05) lowered (P<0.05) the pH in duodenum, jejunum, ileum and caecum compared to control. Supplementation of chicory root powder (0.5, 1.0 & 1.5%) significantly (P<0.05) decreased the E. coli and Salmonella counts and (P<0.05) increased the Lactobacilli counts in ileum when compared to control and antibiotic groups. Supplementation of chicory (1.0% and 1.5%) groups significantly (P<0.05) increased the villus height (VH), crypt depth (CD), VH:CD ratio and villus width (VW) in the duodenum, ileum and jejunum at 42 d of age. Supplementation of chicory 1.0% and 1.5% groups significantly (P<0.05) increased the goblet cell number in duodenum, jejunum and ileum of broilers. Therefore, chicory root powder (1.0 and 1.5%) can be used as an alternative to antibiotic for improving gut performance of broiler chicken.

Effect of dietary supplementation of herbal growth promoteron performance of commercial broiler chicken

2016 ◽  
Author(s):  
J. D. Mahanta ◽  
B. Borgohain ◽  
Mihir Sharma ◽  
D. Sapcota ◽  
Jakir Hussain
Keyword(s):  
Body Weight ◽  
Broiler Chicken ◽  
Dietary Supplementation ◽  
Basal Diet ◽  
Broiler Chicks ◽  
Growth Promoter ◽  
Feed Conversion ◽  
Final Body Weight ◽  
Commercial Broiler ◽  
Similar Body

The present study was conducted to evaluate the effect of a Commercial Herbal Growth Promoter (CHGP) with a combination of selective nine numbers of herbs on the performance of broiler chicken. A total of 120 day-old commercial broiler chicks having similar body weight from a single hatch were procured and chicks were randomly distributed into four groups viz, T0 (standard basal diet as control), T1 (basal diet + 1.0 % CHGP powder), T2 (basal diet + 2.0 % CHGP powder) and T3 (basal diet + 3.0 % CHGP powder) comprising 30 chicks in each groups. All the birds were managed under uniform managemental condition. The final body weight was significantly (P£0.01) highest in T2 (2059.83 g) followed by T3 (1956.67 g), T0 (1845.33 g) and T1 (1825.17 g). In respect of overall Feed Conversion Ratios (FCR), T2 group showed significantly (P£0.05) best FCR value of 1.69 followed by T3 (1.77), T0 (1.85) and T1 (1.87). The study revealed that there was increased body weight, improved FCR, higher BPEI, cent per cent livability and increased gross profit per broiler in birds offered 2% CHGP powder as herbal growth promoter.

scholarly journals Growth performance and carcass yield of broiler chickens in response to carbohydrases and its association with phytase

2019 ◽  
Vol 71 (3) ◽  
pp. 983-989
Author(s):  
G.V. Dessimoni ◽  
N.K. Sakomura ◽  
D.C.Z. Donato ◽  
L. Soares ◽  
M.F. Sarcinelli ◽  
...  
Keyword(s):  
Broiler Chickens ◽  
Broiler Chicken ◽  
Positive Control ◽  
Negative Control ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
Carcass Yield ◽  
Randomized Design ◽  
Carcass Parameters ◽  
Completely Randomized Design

ABSTRACT An experiment was conducted to evaluate broiler chicken performance and carcass yield in response to carbohydrase supplementation (Xylanase and Betaglucanase; XB) and association of carbohydrase and phytase (PHY). A total of 1,920 day-old male broiler chicks (Cobb 500) were distributed in a completely randomized design with 8 treatments and 8 replicates each, allocated in 64 pens with 30 chicks each. The treatments were: Positive Control (PC); Negative Control (NC): reduced ME [-120kcal/kg (Starter) and -170kcal/kg (Finisher)]; NC + XB [50g/ton]; NC + XB [100g/ton]; NC + XB [150g/ton]; NC + XB [50g/ton] + PHY [100g/ton]; NC + XB [100g/ton] + PHY [100g/ton]; NC + XB [150g/ton] + PHY [100g/ton]. The inclusion of XB (150) and XB (50, 100, and 150) associated with phytase increased feed intake than positive control when considering the total rearing phase. The feed conversion ratio of all broilers fed diets with energy reduction were worse than positive control, even with the addition of enzymes, and did not differ between them. There was no significant effect of treatments on carcass parameters.

scholarly journals Prenatal and post-hatch assessment of two strains of broiler chickens reared under high natural ambient temperatures

2020 ◽  
Vol 47 (4) ◽  
pp. 64-73
Author(s):  
D. A. Tanimowo ◽  
S. Adesanya ◽  
O. G. Longe
Keyword(s):  
Broiler Chickens ◽  
Broiler Chicken ◽  
Strain Differences ◽  
Liver Glycogen ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
Ambient Temperatures ◽  
Breast Weight ◽  
Average Body ◽  
Average Body Weight

Pre-natal (PN) and post-hatch (PH) assessments were carried out on two broiler chicken strains to examine possible origin of strain differences and response to heat stress. One hundred and forty fertile eggs incubated for 18 days as PN and 192 day-old broiler chicks as PH; were evenly divided between two strains (Arbor Acres [AA] and Marshal [MS]). For the PN assessment (day 18, 19 and 21 of incubation), embryos were dissected and organs weighed. Liver glycogen and moisture content of the carcass and residual yolk sac were also determined. Post hatch, average body weight (ABW), average daily feed intake (ADFI) and feed conversion ratio (FCR) were measured under high natural ambient temperatures. At d 18 of incubation, proportional breast weight and yolk moisture was higher in AA than MS (P < 0.05), with the same trend observed at d 21 for yolk weight (%). Breast, gizzard, heart and liver weights were observed to increase linearly, in proportion to weight of embryo (P <0.001), between d 18 and 21 on incubation, while the inverse was observed for yolk weight (%). Post-hatch, ADFI and FCR at the end of the starter phase were lower in MS compared with AA (P < 0.05). However, at the end of the finisher phase, only ADFI was significantly influenced by strain of broiler (AA < MS; P < 0.05). Serum electrolytes and carcass characteristics did not differ between strains (P > 0.05). Phenotype differences in were manifested prior to hatch, with Marshall exhibiting advantage to Arbor Acres under high ambient temperatures.

scholarly journals Utilization of processed kola nut husk meal in poultry production: Effects on the performance, carcass, biochemical indicators, and antioxidant enzymes of broiler chickens

2021 ◽  
Author(s):  
Olugbenga David Oloruntola
Keyword(s):  
Serum Protein ◽  
Broiler Chickens ◽  
Broiler Chicken ◽  
Control Diet ◽  
Dietary Treatment ◽  
Total Serum Protein ◽  
Total Serum ◽  
Broiler Chicks ◽  
Poultry Production ◽  
Feed Conversion

Abstract This study looked at the effects of processed kola nut husks meal (PKHM) utilization as a feed ingredient on broiler chicken in a 42-day feeding trial. Kola nut pod husks were processed into a PKHM using ash treatment and rumen liquor fermentation. Three experimental diets were developed at both the starter and finisher phases, with PKHM included at 0, 4, and 8%, and dubbed diets 1, 2, and 3, respectively. In a fully randomised design, 240 Arbor Acres broiler chicks were randomly assigned to three treatments (10 birds per replicate). Except for the significantly improved (P<0.05) feed conversion ratio of broiler chickens fed diets 2 and 3 at the grower phase (22-42 days) and overall (0-42 days), the performance indices were not significantly (P>0.05) affected by PKHM dietary inclusion. Broiler chicken carcass characteristics and relative internal organ weights remained constant (P>0.05) through diets. The serum glutathione concentration in broiler chickens fed an 8 percent PKHM inclusive diet increased significantly (P<0.05) than those on the control diet and 4 percent PKHM inclusive diet. When broiler chickens fed an 8 percent PKHM inclusive diet were compared to those fed a control diet, the serum catalase concentration was significantly higher (P<0.05). The total serum protein, creatinine, alanine aminotransferase, aspartate transferase, and cholesterol levels remained constant (P>0.05) regardless of dietary treatment. Dietary PKHM inclusion of up to 8% enhanced improved feed efficiency and increased antioxidant enzyme concentration and did not affect the serum biochemical indices concentration.Statement of NoveltyKola nut husk is one of the agro-wastes that contributes to environmental deterioration due to its underutilization. The kola nut husk is underutilised in broiler production due to its chemical constitution, minimal nutritional value, and poor digestion. In this research, kola nut husk meal was ash treated and rumen liquor fermented before being integrated at varying levels in the experimental diets and the performance characteristics, antioxidant status, serum protein, enzymes and biochemical were evaluated. The findings of this study could aid in the development of an agro-waste-based, low-cost functional feed for broiler chicks that incorporates the underutilised kola nut husk and other abundant agrowastes as macro-ingredients.

scholarly journals Rosewood (Aniba rosaeodora Ducke) oil in broiler chickens diet

2014 ◽  
Vol 15 (1) ◽  
pp. 108-119 ◽  
Author(s):  
Cesar Augusto Lopez Aguilar ◽  
Kedson Raul de Souza Lima ◽  
Maria Cristina Manno ◽  
Jose Guilherme Soares Maia ◽  
Dario Lisboa Fernandes Neto ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Broiler Chickens ◽  
Relative Weight ◽  
Broiler Chicks ◽  
Growth Promoter ◽  
Feed Conversion ◽  
Randomized Design ◽  
And Control ◽  
Different Levels

A study was conducted to evaluate the effects of Rosewood oil (RO) on performance, carcass and commercial cut yields and microbiology of the gastrointestinal tract of broiler chickens. Five hundred and forty one-day-old male broiler chicks were arranged in a completely randomized design with six treatments and six repetitions consisting of 15 broiler chicks each. The treatments were: inclusion levels of 0.00mL (0.00EO); 0.15mL (0.15 EO); 0.30mL (0.30 EO); 0.45mL (0.45 EO) and 0.60mL (0.60 EO) of RO/kg diet and control (commercial promoter virginiamycin). At 21 and 40 days old, no significant differences in body weight, feed intake, feed conversion and viability of birds were observed when comparing the controls with the different levels of inclusion of RO. The carcass yields of commercial cuts were not affected by treatments. The increased level of RO reduced the relative weight of the intestines. The broilers consuming growth promoter had the highest concentration of Escherichia coli in the intestinal contents, compared to 0.00 EO and 0.30 EO. It was concluded that, Rosewood oil does affect the performance and yield slaughter, but it does reduce the relative weight of the intestines. RO does not show a consistent antimicrobial activity in vivo against Escherichia coli.

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