Effect of clenbuterol on growth performance in broilers

The objective of this study was to evaluate the effect of clenbuterol (CB), a beta2-adrenergic agonist, as a growth and weight gain promoter in broilers. Effects of CB were assessed, mixing it in feed at 0.0, 0.21, 0.42 and 0.84ppm, and feeding during four weeks to four groups (n=75) of 28 day-old Arbor Acres chickens. The body weight (BW) and food intake at 0, 12, 20 and 28 days of the study were recorded. Also abdominal fat (AF) and total muscle proteins were measured. Results indicate that from day 20 until the last of the experimental period (56-day-old), efficacy of CB was evident to increase growth and decrease AF deposition rates (P<0.01), in a dose-response pattern, suggesting that CB has a profitable growth promoting effect in broiler chickens.

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EFFECT OF DIETARY SUPPLEMENTATION OF GARLIC ON FEED CONVERSION RATIO, CARCASS PHYSIOGNOMIES AND HAEMATOLOGICAL PARAMETERS IN BROILERS

Bangladesh Journal of Veterinary Medicine ◽

10.3329/bjvm.v15i1.34047 ◽

2017 ◽

Vol 15 (1) ◽

pp. 7-11

Author(s):

M. F. Islam ◽

M. N. Haque ◽

A. Parvin ◽

M. N. Islam ◽

M. N. Alam ◽

...

Keyword(s):

Body Weight ◽

Broiler Chickens ◽

Body Weight Gain ◽

Haemoglobin Concentration ◽

Negative Control ◽

Conversion Ratio ◽

Feed Conversion Ratio ◽

Feed Conversion ◽

Promoting Effect ◽

Growth Promoting

One of the widespread spices is garlic which consumed by people of different parts of the world but its valuable growth promoting effect is not sufficiently studied in poultry. Growth promoting effect of garlic in broiler chickens was studied together with its carcass characteristics and blood parameters. Broilers were grouped into four: A (1%), B (2%), C (positive control) and D (negative control). Aqueous extract of garlic (1% and 2%) was prepared by extraction and were administered with drinking water. A group (1%) shows best performance with regards to body weight gain rather than B (2%), positive and negative control. At the end of experiment (35th day), in A group, the live body weight, dressed weight, feed conversion ratio, liver, gizzard, heart, spleen, and pancreas were 1833.2±2.1g (P<0.05), 1229.7±1.9g (P<0.05), 1.63(P<0.05), 47.13±0.4g, 26.15±0.7g, 9.71±1.8g, 2.21±0.2g, 2.27±0.1g respectively. The mean Total Erythrocyte Count (TEC), Haemoglobin concentration (Hb) and Packed Cell volume (PCV) were 2.9± 0.1million/cm3,7.5g ± 0.2g, and 25.8 ± 0.6%, respectively. It is recommended that 1% aqueous extraction of garlic shows better growth and improved carcass qualities in broilers.

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Effect of Genex, a feed additive containing organic acids and herb extracts, on the performance of broiler chickens

Journal of the Hellenic Veterinary Medical Society ◽

10.12681/jhvms.15379 ◽

2018 ◽

Vol 53 (3) ◽

pp. 247 ◽

Cited By ~ 1

Author(s):

A. B. SPAIS (A.B. ΣΠΑΗΣ) ◽

I. A. GIANNENAS (Η.Α.ΓΙΑΝΝΕΝΑΣ) ◽

P. FLOROU-PANERI (Π. ΦΛΩΡΟΥ-ΠΑΝΕΡΗ) ◽

E. CHRISTAKI (Ε ΧΡΗΣΤΑΚΗ) ◽

N. A. BOTSOGLOU (Ν.Α. ΜΠΟΤΣΟΓΛΟΥ)

Keyword(s):

Organic Acids ◽

Broiler Chickens ◽

Basal Diet ◽

The Body ◽

Productivity Index ◽

Feed Additive ◽

Feed Conversion ◽

Promoting Effect ◽

Commercial Diet ◽

Weight Growth

In this experimental study, the performance of broiler chickens fed diets supplemented with Genex, a feed additive containing organic acids and their ammonium salts, essential oils and plant extracts, was evaluated. A total of 17,340 one day-old Cobb chicks randomly divided into three groups and housed in floor pens of a commercial farm, were used in a feeding trial that lasted 40 days. One group was fed on a basal commercial diet, the second group on the same diet supplemented with 8 g flavomycin /ton of feed, while the third group was given the basal diet supplemented with Genex at 3 kg/ton till 21 days of age and 4 kg/ton thereafter. In this trial the buffering capacity of the tested diets and their ingredients was also measured. Results based on the body weight growth, the feed conversion ratios, the mortality rate and the productivity index suggested that supplementation of the feed with Genex exerted a growth-promoting effect comparable to that of flavomycin.

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Enhancing Tolerance of Broiler Chickens to Heat Stress by Supplementation with Vitamin E, Vitamin C and/or Probiotics

Annals of Animal Science ◽

10.1515/aoas-2017-0012 ◽

2017 ◽

Vol 17 (4) ◽

pp. 1155-1169 ◽

Cited By ~ 21

Author(s):

Youssef A. Attia ◽

Mohammed A. Al-Harthi ◽

Ali S. El-Shafey ◽

Yassar A. Rehab ◽

Woo Kyun Kim

Keyword(s):

Heat Stress ◽

Adverse Effects ◽

Total Protein ◽

Blood Cells ◽

Broiler Chickens ◽

Plasma Cholesterol ◽

Experimental Period ◽

Abdominal Fat ◽

Stressed Group ◽

Vit C

AbstractHeat stress is one of the major challenges which the poultry industry faces during summer in tropical and subtropical regions. This study was conducted to evaluate the impact of Vitamin (Vit) E, C and/or probiotics on improving tolerance of broiler chickens to chronic heat stress (CHS). A total of 294, 1-day-old Cobb-500 broiler chicks were allocated into seven treatment groups; Thermoneutral group was raised under a thermoneutral condition during 25–42 d of age. The other six groups were raised for three successive days per week at 36±2ºC and 75–85% relative humidity for 7 h daily: heat stressed group, Vit E (100 mg/kg diet), Vit C (200 mg/kg diet), Vit C+Vit E, probiotics (Saccharomyces cerevisiae and Lactobacillus acidophilus at 2 g/kg diet) and Vit C+Vit E+probiotics. Exposure to CHS decreased body weight gain (BWG), feed intake (FI), and abdominal fat. It had adverse impact on feed conversion ratio (FCR), packed cell volume (PCV), monocyte, basophil, total protein, and phagocytic activity while increased plasma cholesterol and aspartate aminotransferase (AST) compared to the thermoneutral group. Vit E, Vit C or probiotics alone decreased the adverse effects of CHS on growth rate throughout the experimental period. Vit C and E were equally potent during the experimental period, but were less effective than the combination of both vitamins. Vit E increased the dressing percentage and abdominal fat as compared to the thermoneutral group, but decreased AST while increasing basophil, monocyte and globulin compared to the heat stressed group. In addition, serum albumin and AST of Vit E were lower compared to Vit C, but cholesterol was higher. Vit E increased red blood cells and white blood cells, but plasma cholesterol was increased compared with the heat stressed group. Vit C increased PCV, lymphocytes, monocyte, basophil and albumin and decreased neutrophil. Both vitamins without/with probiotic induced a further increase in basophil, serum total protein, and albumin. It could be concluded that supplementation of Vit E, Vit C, probiotics, and different combinations reduced some of the adverse effects of CHS, and Vit E+Vit C+probiotics was the most effective for economic traits followed by Vit E+Vit C or probiotics.

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Macleaya cordata helps improve the growth-promoting effect of chlortetracycline on broiler chickens

Journal of Zhejiang University SCIENCE B ◽

10.1631/jzus.b1700435 ◽

2018 ◽

Vol 19 (10) ◽

pp. 776-784 ◽

Cited By ~ 1

Author(s):

Bin Li ◽

Jin-qiu Zhang ◽

Xian-gan Han ◽

Zheng-lei Wang ◽

Yuan-yuan Xu ◽

...

Keyword(s):

Broiler Chickens ◽

Promoting Effect ◽

Macleaya Cordata ◽

Growth Promoting

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The effect of a plant mixture (garlic, mint and rosemary) on production and slaughter indicators in broiler chickens

Acta agriculturae Serbica ◽

10.5937/aaser2050149p ◽

2020 ◽

Vol 25 (50) ◽

pp. 149-152

Author(s):

Veselin Petričević ◽

Miloš Lukić ◽

Zdenka Škrbić ◽

Maja Petričević ◽

Snežana Bogosavljević-Bošković ◽

...

Keyword(s):

Broiler Chickens ◽

Experimental Period ◽

The Body ◽

Control Group ◽

Feed Conversion ◽

Study Objective ◽

Body Weights ◽

Plant Mixture ◽

Positive Effect ◽

At Will

The study objective was to examine the effect of the addition of different concentrations of a mixture of three plants (garlic, mint and rosemary) in the diet of broiler chickens on production and slaughter results. The mixture was formed by grinding plants after drying and mixing them in a ratio of 1: 1: 1. The experiment was performed on 600 chickens divided into 4 groups with 3 replicates per group. The chickens were fed at will and the composition of the diet differed only in the amount of added mixture. No mixture was added in control group (C). Group MIX-I chickens consumed a diet supplemented with 0.25% of the mixture, group MIX-II diet contained 0.5% of the mixture supplement, while group MIX-III broilers received 0.75% of the mixture in their diet. At the end of the experimental period, at the age of 42 days, the body weight of the chickens was measured. Mortality, feed conversion and EPEF were determined. At the end of the experiment, 12 chickens (6 males and 6 females) were sacrificed by random sampling from each group in order to determine slaughter results. The obtained results showed that the use of the mixture of three plants had a positive effect on the production parameters. MIX-II group chickens had significantly higher (p<0.01) body weights, better feed conversion and significantly higher (p<0.01) EPEF values compared with C group. No significant differences in slaughter performances were found.

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PENGARUH PEMBERIAN PAKAN PENGISI PADA AYAM BROILER UMUR 22-28 HARI TERHADAP PERTUMBUHAN, DAN KANDUNGAN LEMAK KARKAS DAN DAGING

Buletin Peternakan ◽

10.21059/buletinpeternak.v35i1.589 ◽

2012 ◽

Vol 35 (1) ◽

pp. 38

Author(s):

Tri Rumiyani ◽

Wihandoyo (Wihandoyo) ◽

Jafendi Hasoloan Purba Sidadolog

Keyword(s):

Body Weight ◽

Significant Influence ◽

Broiler Chickens ◽

Abdominal Fat ◽

The Body ◽

Feed Consumption ◽

Feed Conversion ◽

Corn Bran ◽

Mineral Data ◽

Plot Design

The experiment was conducted to study the effect of stuff feeding given during 22 to 28 days of ages on growth, meat fat and abdominal fat of broiler. Ninety broiler males (J) and 90 broiler females (B) were divided into 6 treatments groups with 3 replications of 10 broiler chickens each. The treatment were control (K) chicken which was fed with commercial diets from DOC to 42 days of age, DJ and P chickens were fed with corn bran (DJ) or pollard (P) from 22 to 28 days and continued with commercial feeding until 42 days. Feeds for DJ and P treatment was supplemented with B-12 mineral. Data collected were body weight, feed consumption, feed conversion, carcass weight, meat as well as abdominal fat. The data were analyzed by analysis split-plot design (3 feed treatments, 2 sex treatments and 3 phases) and then were tested by DMRT. The results showed that the feed treatments (K, DJ, and P) significantly affected (P<0.05) the body weight (1583, 1289, and 1213 g), feed consumption (1180, 1051, and 1035 g), feed conversion (1.67; 2.62; and -1.89), percentage of abdominal fat (1.80, 2.03, and 1.29%). Sex (J and B) significantly influenced (P<0.05) on body weight, feed conversion, percentage of abdominal fat, but feed consumption, percentage of carcass, meat fat, had no significant differences. The interaction of sex and feed showed significant influence (P<0.05) on meat fat at 22 day of ages. The interaction of feed, sex, and phase had significant influence (P<0.05) on body weight and feed consumption. It could be concluded that stuff feeding decreased body weight, feed consumption, percentage of abdominal fat, but increased feed conversion and meat fat. (Key words: Broiler chicken, Sex, Feed stuff, Broiler Starter, Corn bran, Pollard)

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Pengaruh Pemberian Tepung Rumput Laut pada Ransum Ayam Broiler terhadap Kadar Lemak dan Kolesterol

bionature ◽

10.35580/bionature.v20i1.9762 ◽

2019 ◽

Vol 20 (1) ◽

Author(s):

Nurinsan Juniarti ◽

Rosdiana Ngitung ◽

St. Fatmah Hiola

Keyword(s):

Body Weight ◽

Broiler Chickens ◽

Broiler Chicken ◽

Abdominal Fat ◽

The Body ◽

Fat Percentage ◽

Randomized Design ◽

Fat Level ◽

Completely Randomized Design ◽

Program Version

Abstract. This research aimed to know the effect of seaweed meal at broiler chicken rations to fat level and cholesterol. This research using an experimental with Completely Randomized Design (CRD) with 4 treathments and 6 replications. Each treatment had 5 chickens test, so a total of 120 chickens test. The treatments given of the ration treatment without seaweed meal as control, ration with seaweed meal 3%, ration with seaweed meal 5%, ration with seaweed meal 7%. The parameters growth of broilers was the body weight chickens test did every week, carcass percentage, thorax percentage and abdominal fat percentage did at the end of experiment were after broiler 42 days. The data obtained were analyzed using analysis of variance and continued with Duncan test α 0,05 use SPSS program version 13.0. The results showed that treatment with seaweed meal significantly decreased to body weight, but had not affected to carcass percentage, thorax percentage and abdominal fat percentage, for the analysis materials on meat fat level and cholesterol apparently treatment using seaweed meal 7% can lower meat fat level, and cholesterol.Keyword: seaweed meal, broiler chickens, fat, cholesterol.

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The quantity of abdominal fat in broiler chicken of different genotypes from fifth to seventh week of age

Biotechnology in Animal Husbandry ◽

10.2298/bah0702331n ◽

2007 ◽

Vol 23 (5-6-2) ◽

pp. 331-338 ◽

Cited By ~ 4

Author(s):

N. Nikolova ◽

Z. Pavlovski ◽

N. Milosevic ◽

L. Peric

Keyword(s):

Body Mass ◽

Broiler Chickens ◽

Broiler Chicken ◽

Abdominal Fat ◽

The Body ◽

Random Selection ◽

Intensive Rearing ◽

Production Conditions ◽

Technical Recommendations

In this work quantity of abdominal fat (weight and portion) was examined in broilers of two genotypes in the fifth, sixth and seventh week of their growth. The examination was carried out in production conditions, in the facility for commercial fattening of broilers chickens, so all technical recommendations related to intensive rearing of chickens were provided. Broilers Cobb 500 and Hubbard Classic which were housed in separate boxes (8 boxes for each genotype) were used as a material. Forty male chickens and forty female chickens at the 5, 6 and 7 weeks of age were selected for slaughtering by random selection, so 240 all together sacrificed chickens were prepared for further treatment. By cutting of the carcasses, abdominal fat was removed and measured, and it was put in proportion to the body mass before slaughtering and in this way the share of abdominal fat was obtained. All data was statistically processed by the subprogram Basic Statistic and Anova. The chickens of the genotype Hubbard had significantly higher share (0,96%) and insignificantly higher weight (19,47g) of abdominal fat than Cobb 500 (0,83% and 17,16g). Female chickens of both genotypes in the examination had significantly higher weight (19,84g) and share (0,96%) of abdominal fat in carcass then male broilers. Chickens at the age of 49 days had statistically significantly higher abdominal fat than the chick at the age of 42 and 35 days in absolute (25,35g) and relative values (1,06%). This confirms the importance of the examined factors on the amount of abdominal fat in carcass of broiler chickens.

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