scholarly journals PÓLEN APÍCOLA COMO ADITIVO EM DIETAS PARA FRANGOS DE CORTE

Nativa ◽  
2018 ◽  
Vol 6 (5) ◽  
pp. 551 ◽  
Author(s):  
Rômulo Batista Rodrigues ◽  
Luiz Eduardo Avelar Pucci ◽  
Juliano Uczay ◽  
Mabel Molinari ◽  
Rafael Lazzari ◽  
...  
Keyword(s):  
Weight Gain ◽  
Feed Intake ◽  
Efficiency Index ◽  
Productive Efficiency ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
Villus Height ◽  
Nutrition Supplementation ◽  
Randomized Design ◽  
Intestinal Morphometry

O pólen apícola é um produto natural constituído por vários nutrientes, rico em aminoácidos livres e com baixo teor de gordura, além de propriedades profiláticas e terapêuticas, desta maneira é uma excelente opção na nutrição animal e pode oferecer benefícios ao desempenho e saúde dos animais de produção. Este trabalho foi realizado para avaliar o uso de pólen apícola em dietas para frangos de corte. Foram utilizados 105 pintos machos com um dia de idade, linhagem Cobb 500® (peso inicial = 38,95 ± 2,37g), em delineamento inteiramente casualizado e alimentados durante 42 dias. Foram utilizados três tratamentos, com diferentes níveis de inclusão de pólen apícola (0, 15.000, 30.000 mg/kg) e cinco repetições. Foram avaliadas as seguintes variáveis: desempenho zootécnico (consumo de ração, ganho de peso, conversão alimentar, viabilidade e índice de eficiência produtiva), características de carcaças (rendimento de carcaça, peito, coxa e sobrecoxa, asas, fígado, moela e coração) e histomorfometria intestinal (profundidade de cripta, largura da vilosidade e altura da vilosidade). Observou-se diferença entre os tratamentos sobre os parâmetros de ganho de peso, consumo de ração, conversão alimentar, índice de eficiência produtiva, rendimento de coxa e sobre coxa, de fígado, de coração e moela dos frangos de corte. Na análise de histomorfometria intestinal, a altura da vilosidade foi diferente entre os tratamentos. Recomenda-se a utilização de 30.000 mg/kg de pólen apícola na dieta por melhorar o desempenho dos frangos de corte.Palavras-chave: aves, desempenho zootécnico, nutrição, suplementação. POLLEN AS ADDITIVES IN DIETS FOR BROILERS ABSTRACT:The bee pollen is a natural product consisting of several nutrients, rich in free amino acids and low in fat, and prophylactic and therapeutic properties, so it is an excellent choice in animal nutrition and can offer benefits to the performance and health of animals of production. This study was conducted to evaluate the use of pollen in diets for broilers. We used 105 broiler chicks of one day old Cobb 500 (initial weight = 38.95 ± 2.37 g) in a completely randomized design and fed for 42 days. Three treatments were used, with different inclusion levels of pollen (0, 15000 and 30000 mg/kg) and five replications. We evaluated the following variables: performance (feed intake, weight gain, feed conversion, feasibility and Productive Efficiency Ratio), carcass traits (carcass yield, breast, leg and thigh, wings, liver, gizzard and heart) and rates of intestinal morphometry (crypt depth, villus width and villus height). It was observed a difference between treatments on the parameters of weight gain, feed intake, feed conversion, productive efficiency index, yield and thigh on thigh, liver, heart and gizzard of broilers. In morphometric analysis intestinal villus height was between treatments. It is recommended to use 30,000 mg / kg of pollen in the diet to improve the performance of broilers.Keywords: chicken, growth performance, nutrition, supplementation.

scholarly journals Evaluation of the use of probiotics in diets with or without growth promoters for broiler chicks

2010 ◽  
Vol 39 (12) ◽  
pp. 2687-2690 ◽  
Author(s):  
Régis Fernando Pastorelo Meurer ◽  
Paula Carvalho Leal ◽  
Chayane da Rocha ◽  
Ivânio José Martins Bueno ◽  
Alex Maiorka ◽  
...  
Keyword(s):  
Bacillus Subtilis ◽  
Weight Gain ◽  
Feed Intake ◽  
Control Diet ◽  
Experimental Period ◽  
Efficiency Index ◽  
Productive Efficiency ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
Growth Promoters

This work was carried out to evaluate the use of Bacillus subtilis probiotic C-3102 (10(10)cfu/g) in diets with or without growth promoters on the performance of broilers in the period from 1 to 42 days of age. It was used 1,200 Cobb line broilers, distributed in a complete randomized block with five diets: negative controller (without promoters); Bacillus subtilis (30 g/t ration); Bacillus subtilis (50 g/t ration); Bacillus subtilis (30 g/t ration) + colistin (10 ppm); avilamycin (10 ppm) + colistin (10 ppm). Each diet was evaluated in 10 repetitions with 24 birds. From 21 to 42 days of age, feed intake, weight gain and feed conversion were evaluated, and at 42 days of age, productive efficiency index was evaluated. At the end of the experimental period, it was observed an increase in the consumption of diet with the lowest dose of Bacillus subtilis (30 g) in relation to that one with Bacillus subtillis (30 g) + colistin (10 ppm). The values of weight gain obtained with the diet with the lowest dose of Bacillus subtillis (30 g) and with avilamycin (10 ppm) + colistine (10 ppm) were higher than those of the birds fed control diet (without promoters). For feed conversion, the best results were obtained by supplying diets containing 50 g of Bacillus subtillis, diet with 30 g of Bacillus subtillis + 10 ppm of colistin; and diet with 10 ppm of avilamycin + 10 ppm colistin. For the analysis of productive efficiency index, the best results were obtained with diets containing additives (probiotics and/or antibiotics) in comparison to the control diet. Bacillus subtillis C-3102 probiotic, at concentration 10(10) cfu/g, is an efficient substitute of antibiotics.

scholarly journals The impact of raw and cooked wild cocoyam (Caladium bicolor) on the performance of broiler chicks

2012 ◽  
Vol 28 (1) ◽  
pp. 119-128 ◽  
Author(s):  
P.N. Onu ◽  
F.N. Madubuike
Keyword(s):  
Weight Gain ◽  
Feed Intake ◽  
Nutritive Value ◽  
Cost Savings ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
Randomized Design ◽  
The Impact

This study was carried out to evaluate the impact of raw and cooked wild cocoyam (Caladium bicolor) on the performance of broiler chicks. Wild cocoyam corms were divided into two batches. One batch was ground raw and the other batch was cooked before grinding. Wild cocoyam meals so prepared were used to formulate 5 broiler starter diets at dietary inclusion levels of 0, 10 and 20% raw and cooked wild cocoyam respectively. 180 7-day-old Anak broiler chicks were randomly allotted to the five treatment diets in a Completely Randomized Design (CRD) and each group was further subdivided into three replicates of 12 birds. Measurements recorded included weight gain, feed intake, feed conversion and protein efficiency ratios and economics of production. Results shows significant (p<0.05) improvement in feed intake, weight gain, feed conversion ratio and PER of birds fed cooked wild cocoyam meals. Marked (p<0.05) reduction was however, obtained in feed intake and feed conversion ratio of birds fed raw wild cocoyam diets. There was no significant (p>0.05) difference between birds fed maize-based (control) and cooked wild cocoyam diets. Results of this experiment indicated that cooking improved the nutritive value of wild cocoyam since birds fed cooked wild cocoyam diets produced best results than those fed raw wild cocoyam meal and that starter broilers could tolerate up to 20% dietary inclusion level of cooked wild cocoyam without any deleterious effect. Economics of production showed that cooked wild cocoyam diets were more profitable as regards the cost of feed per kg weight gain (N) and thus cost savings (%).

Performance of broiler with feeding different levels of palm oil

2014 ◽  
Vol 43 (1) ◽  
pp. 45-51
Author(s):  
GB Das ◽  
ME Hossain ◽  
MA Akbar
Keyword(s):  
Weight Gain ◽  
Palm Oil ◽  
Feed Intake ◽  
Live Weight ◽  
Heart Weight ◽  
Free Access ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
Randomized Design ◽  
Different Levels

Six hundred day-old unsexed broiler chicks were used in a 42-day trial to compare the effects of different levels of palm oil supplementation on feed intake, weight gain, feed conversion and carcass quality of broilers. The chicks were randomly distributed following a completely randomized design in four treatment groups having three replications per treatment. Each treatment had 150 broilers with 50 broilers per replicate. Four diets were formulated using locally available ingredients as diet without oil, diets containing 2.5%, 3.0% and 3.5% palm oil. All broilers had free access to ad libitum feeding. Results indicated that, supplementation of diets with different levels of palm oil significantly (p<0.05) influenced feed intake of broiler only at the age of 6th week. It was observed that as the level of supplementation increased, feed intake gradually decreased up to 6th week. Supplementation of diets with different levels of palm oil increased live weight gain of broilers. Differences (p<0.01) were observed at the end of 4th, 5th and 6th weeks of age only. Use of different levels of palm oil significantly (p<0.05) changed blood weight, heart weight and dressed weight. Survivability of broilers was higher in the supplemented group compared with without oil group. It was concluded that, supplementation of palm oil at 3.5% level in the diet of broilers resulted higher weight gain, better feed conversion and improved carcass characteristics comparing other levels. It may be concluded that supplementation of palm oil at 3.5% level in the diet of broilers resulted significantly (p>0.05) higher feed conversion ratio compared to 2.5% and 3.0% levels.DOI: http://dx.doi.org/10.3329/bjas.v43i1.19384 Bang. J. Anim. Sci. 2014. 43 (1): 45-51

scholarly journals Effect of dietary inclusion of Anthonata macrophyla meal on the performance of broiler starter chicks

2021 ◽  
Vol 32 (2) ◽  
pp. 268-273
Author(s):  
C. S. Durunna ◽  
A.B.I. Udedibie ◽  
M.C. Uchegbu
Keyword(s):  
Weight Gain ◽  
Feed Intake ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
Crude Fibre ◽  
Feed Cost ◽  
Randomized Design ◽  
Nitrogen Free Extract ◽  
Final Weight ◽  
Completely Randomized Design

A 28-day feeding trial was conducted to evaluate the effect of dietary inclusion of Anth:-:: macrophylla meal on the performance of broiler starter chicks. Anthonala macrophyla was harvested from the wild, wushed, chopped into tablets, sun-dried and milled to produce the test meal. The meal contained un diy matter basis 21.11% crude protein, 1.90% crude fat, 2.00% total ash, 5.03% crude fibre and 54.36% nitrogen free extract. Five (5) broiler starter diets were formulated to contain the meal at 0,5,10,15 and 20% level, respectively. One hundred and eighty (180) day-old Anak broiler chicks were divided into 5 groups of thirty-six birds each and randomly allocated to the five treatment rations in a completely randomized design (CRD). Data were collected on feed intake, weight gain, feed conversion ratio, protein efficient ratio, cost of production of one kilogramme of each test feed among others and carcass characteristics. At 15 and 20% dietary levels. Anthonata macrophylla significantly (p<0.05) depressed feed intake, daily weight guin, feed conversion and protein efficiency ratios and final weight gain of the birds. Organ weight parameters showed no significant (P>0.05) differences among the treatments. The results of this investigation suggest that Anthonata macrophyla meal can be included in broiler starter ration up to 10% without any deleterious effect on the birds and at this level of inclusion, feed cost was reduced by 10%. 

PERFORMANCE AND INTESTINAL MORPHOMETRY OF NAKED NECK BIRDS FED TREE CASSAVA HAY

2020 ◽  
Vol 4 (1) ◽  
pp. 46
Author(s):  
Marcelo Helder Medeiros Santana ◽  
Patrícia Emília Naves Givisiez ◽  
Maria Cristina Duarte de Lima ◽  
Jalceyr Pessoa Figueiredo Júnior ◽  
Élcio Gonçalves dos Santos ◽  
...  
Keyword(s):  
Weight Gain ◽  
Relative Weight ◽  
Basal Diet ◽  
Feed Conversion ◽  
Villus Height ◽  
Naked Neck ◽  
Semiarid Climate ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Intestinal Morphometry

<p>Basal diet was partially substituted with tree cassava (<em>Manihot psdeudoglaziovii</em>) hay in the feeding of naked neck Label Rouge birds reared in semiarid climate. It was evaluated the effects on food intake, weight gain, feed conversion from 33 to 70 days of age (d), relative weight of prime cuts and edible organs at 70d, and the histology of small intestine at 56d. An economic analysis of the use of tree cassava hay was also carried out. Three hundred Label Rouge birds were distributed at 33d into a completely randomized design with three treatments (0, 7 and 14% of tree cassava hay levels) and ten repetitions with ten birds per repetition. There were no differences on feed intake, although tree cassava levels negatively affected weight gain and feed conversion. Relative gizzard weight increased (P&lt;0.05) with higher tree cassava levels. In the duodenum, villus height increased (P&lt;0.01) in birds fed 7% tree cassava hay; crypts were deeper in all segments of birds fed 14% tree cassava hay. Relative gross profit decreased in any scenario simulated with 14% of tree cassava hay. The substitution of tree cassava hay for basal diet at the level of 7% is viable for naked neck Label Rouge birds reared in semiarid climate.</p>

scholarly journals Commercial enzyme influence on broilers fed different levels of wheat

2013 ◽  
Vol 29 (2) ◽  
pp. 337-344
Author(s):  
S. Seifi
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Feed Intake ◽  
Body Weight Gain ◽  
Efficiency Index ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
Different Levels

An experiment was conducted to evaluate the efficacy of multienzyme supplement (Natuzyme?) in diets containing wheat on the broilers performance. A total of one hundred twenty day old male broiler chicks (Arbor Acres) were randomly assigned to 6 treatments with a 2 3 factorial arrangement (0, 150 and 300 gram per kilogram wheat and 0 and 0.025 gram per kilogram enzyme). Chickens were fed with starter, grower and finisher diets during 1-21, 22- 35, 36-49 days of the age, respectively. Body weight gain, feed intake, and feed conversion ratio were determined weekly and productivity efficiency index was determined at the end of experiment. Litter moisture was evaluated at the age 21 days. The results indicated that although different levels of multi-enzyme and wheat had no significant effect on body weight gain, feed intake, feed conversion ratio, productivity efficiency index and litter moisture but caused partial improvement in these parameters.

scholarly journals Growth performance and carcass characteristics of broilers fed graded levels of dry distilled cassava with soluble

2020 ◽  
Vol 47 (5) ◽  
pp. 156-161
Author(s):  
O. J. Oyedele ◽  
A. O. Olosunde ◽  
T. A. Otunla ◽  
F. H. A. Ajibogun
Keyword(s):  
Weight Gain ◽  
Feed Intake ◽  
Daily Weight Gain ◽  
Average Weight ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
Randomized Design ◽  
Consommation Alimentaire ◽  
Total Weight Gain ◽  
Significant Difference

This study was carried out to investigate the performance of broilers fed graded levels of Dry Distilled Cassava with Soluble (DDCS). In a 28-day trial, one hundred and forty-four (144), 5-week old, un-sexed Arbor acre strain broiler chicks (average weight of 1.09±0.02 kg) were randomly allocated to four dietary treatments of wheat offal (WO) and DDCS (12% WO + 0% DDCS = 0% DDCS; 8% WO + 4% DDCS = 4% DDCS; 4% WO + 8% DDCS = 8% DDCS and 0% WO + 12% DDCS = 12% DDCS) in completely randomized design. Each treatment had 2 replicates of 18 birds each. Dry matter feed intake (FI g/day), daily weight gain (g/day) and total weight gain (kg) decreases with increase in the levels of DDCS, while the feed conversion ratio (FCR) increases with increase in levels of DDCS, respectively. However, there was no significant (P>0.05) differences in the carcass evaluation measured. It was concluded that DDCS could replace wheat offal in the diets of broilers up to 8% without significant difference in growth and feed intake without detrimental effects on carcass quality of the birds.     Cette étude a été réalisée pour étudier la performance des poulets de chair nourris à des niveaux échelonnés de manioc distillé sec avec soluble (le 'DDCS'). Dans un essai de 28 jours, cent quarante-quatre (144) poussins de chair de la souche Arbor acre non sexés de 5 semaines (poids moyen de 1.09 ± 0.02 kg) ont été répartis au hasard dans quatre traitements diététiques d'abats de blé (WO) et DDCS (12% WO + 0% DDCS = 0% DDCS ; 8% WO + 4% DDCS = 4% DDCS ; 4% WO + 8% DDCS = 8% DDCS et 0% WO + 12% DDCS = 12 % DDCS) dans une conception complètement aléatoire. Chaque traitement comportait 2 répétitions de 18 oiseaux chacun. L'apport alimentaire en matière sèche (FI g / jour), le gain de poids quotidien (g / jour) et le gain de poids total (kg) diminuent avec l'augmentation des niveaux de DDCS, tandis que le taux de conversion alimentaire (FCR) augmente avec l'augmentation des niveaux de DDCS, respectivement. Cependant, il n'y avait aucune différence significative (P> 0.05) dans l'évaluation de la carcasse mesurée. Il a été conclu que le DDCS pouvait remplacer les abats de blé dans l'alimentation des poulets de chair jusqu'à 8% sans différence significative de croissance et de consommation alimentaire sans effets néfastes sur la qualité de la carcasse des oiseaux.

scholarly journals Use of probiotics in diets of animal or vegetable origin for broilers

2016 ◽  
pp. 5336-5344
Author(s):  
Ricardo Nunes ◽  
Carina Scherer ◽  
Angela Poveda P ◽  
Wagner Da Silva ◽  
Matias Appelt ◽  
...  
Keyword(s):  
Weight Gain ◽  
Efficiency Index ◽  
Negative Control ◽  
Productive Efficiency ◽  
Growth Promoter ◽  
Feed Conversion ◽  
Daily Food Intake ◽  
Randomized Design ◽  
Daily Food ◽  
Mortality Difference

Objetivo. Evaluar el uso de probióticos en dietas con ingredientes de origen animal o vegetal sobre las variables productivas de pollos de engorde de 1 a 42 días de edad. Materiales y métodos. Fueron utilizados 1056 pollitos de un día de edad, machos de linaje Ross 308, distribuidos en un diseño experimental completamente al azar en un arreglo factorial 2X4 (dieta de origen animal o vegetal) y cuatro promotores (antibiótico, dos probióticos y un control negativo) con 6 repeticiones y 22 aves por unidad. Resultados. A los 7 días de edad hubo diferencia (p<0.05) en el consumo diario de alimento, peso y ganancia de peso y a los 14 días para peso, ganancia de peso y mortalidad entre las dietas. La conversión alimenticia de 1 a 7 días tuvo interacción (p<0.05) entre los tipos de dieta y los promotores. Hubo diferencia (p<0.05) para el peso y la ganancia de peso a los 14 días de edad entre los promotores. A los 21 días de edad la mortalidad presentó diferencia (p<0.05) para el tipo de dietas; el peso, ganancia de peso, consuno diario de alimento y conversión alimenticia presentaron diferencia para los promotores. A los 28, 35 y 42 días de edad la mortalidad y el índice de eficiencia productiva presentaron diferencia (p<0.05) entre el tipo de dietas. Conclusiones. El tipo de dieta y de promotor de crecimiento no afectan las variables productivas; sin embargo, la viabilidad mejora con las dietas de origen animal.Objective. Evaluate the use of probiotics in diets whit ingredients of animal or vegetable origin in production variables of broilers from 1 to 42 days of age. Materials and Methods. Were used 1056 one-day-old chicks, male, of lineage Ross 308, divided in to an experimental randomized design in 2X4 factorial arrangement, two origin of diet (animal or vegetable) and four promoters (antibiotic, two probiotics and a negative control) whit 6 replicates and 22 birds per unit. Results. At 7 days old there was a difference (p<0.05) in daily food intake, weight and weight gain and 14 days for weight, weight gain and mortality among diets. The feed conversion of 1-7 days did interaction (p<0.05) between types of diet and promoters. There was a difference (p<0.05) for weight and weight gain at 14 days of age between promoters. At 21 days of age presented mortality difference (p<0.05) for the type of diets; weight, weight gain, daily feed together and feed conversion showed difference for 5337 developers. At 28, 35 and 42 days old mortality and productive efficiency index showed difference (p<0.05) between the types of diets. Conclusions. The type of diet and growth promoter did not affect production variables, however, the viability improvement animal diets.

scholarly journals EFFECT OF PROTEASE SUPPLEMENTATION ON THE PERFORMANCE AND DIGESTIBILITY OF BROILERS

2020 ◽  
pp. 15-21
Author(s):  
Muhammad Hasnain Riaz ◽  
Aamir Iqbal ◽  
Samiullah Khan ◽  
Muhammad Tahir ◽  
Mian Nazir Shah ◽  
...  
Keyword(s):  
Weight Gain ◽  
Feed Intake ◽  
Broiler Chickens ◽  
Metabolizable Energy ◽  
Broiler Chicks ◽  
Similar Response ◽  
Feed Conversion ◽  
Low Protein ◽  
Randomized Design ◽  
Prominent Response

Premise of the study was to validate the growth promoting eff ect of protease on the performance and to explore its digestion enhancer eff ect in broiler chicks. For this purpose 4 commercial diets were divided into two types (low and high density) and were enriched with protease using a completely randomized design with 4 replicates per diet having 10 chicks each having totaled 200 poultry broiler chickens (day-old). Until 14 days, no eff ects were observed on chicks however at day 14; little variations were observed on weight gain, feed intake and FCR (feed conversion ratio) among the enzyme enriched diets. At day 28, prominent response of protease supplementation in low protein was procured. The chicks gained 10.06 and 8.0 % more weight on CFP1 than CFG1 and CFG2, respectively. Similar response in FCR was observed and was found to be 0.20 and 0.15 points better on CFP1 than on CFG1 and CFG2, respectively. However, CFP2 failed to show protease effi cacy declining the weight gain by 23.01 % while the FCR by 0.49 points as compared with CFP1. This suggested that the nature of feed ingredients in the diets is important for obtaining maximum benefi t of protease supplementation. The overall performance indicated signifi cant response to enzyme supplemented diets. Among the low protein diets CP digestibility remained unchanged but they were diff erent in sparing AME (apparent metabolizable energy) for chicks. The CFP2 spared 98.21 kcal/Kg more AME than CFP1. However, this increased AME values did not help to boost the performance and was attributed to the widening ratio between CP and AME. These results demonstrated that the overall growth response of chicks was improved on low protein diet enriched with protease. It showed higher CP digestibility and AME values than good quality diets. However, the inconsistent results observed within the two types of diets revealed that the nature of diets might have infl uenced the effi cacy of protease. Key words: Broilers, digestibility, protease, FCR, Feed intake.

Effect of an acidifier as replacement for antibiotics on the performance and gut morphology of broilers

2015 ◽  
Vol 11 (2) ◽  
pp. 111-116
Author(s):  
BA Makanjuola ◽  
OO Obi ◽  
TO Olorungbohunmi ◽  
OA Morakinyo ◽  
BA Boladuro ◽  
...  
Keyword(s):  
Drinking Water ◽  
Weight Gain ◽  
Feed Intake ◽  
Broiler Chickens ◽  
Broiler Chicks ◽  
Villus Height ◽  
Gut Morphology ◽  
Final Weight ◽  
Small Intestines ◽  
Dietary Treatments

An experiment was conducted to determine the influence of an acidifier as an alternative to antibiotics on the performance and gut morphology of broiler chickens. One hundred and eighty (180) 7-day old broiler chicks were randomly assigned to 3 dietary treatments of 4 replicates each. Each replicate had 15 birds. The diets fed to the birds were: Treatment 1- diet with neither antibiotic nor acidifier; Treatment 2- diet with antibiotic and Treatment 3- diet with acidifier. The antibiotic used was Enrofloxacin which was administered to the birds on Treatment 2 via their drinking water while the acidifier used was Biotronic SE (a combination of propionic and formic acids) which was added to the diet of birds on Treatment 3 at the rate of 4kg/tonne of feed. The experiment lasted 42 days. No significant differences were observed in the feed intake, final weight and weight gain of the birds on the different diets. Significant differences were however observed in the villus height in the duodenum and ileum of the birds. The crypt depth values in the different segments of the small intestines of the birds were not significantly affected by the different treatments.Key words: Organic acids, Biotronic SE, Enrofloxacin, Crypt, villus.

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