The effects of in ovo pollen extract injection on growth parameters, ileal histomorphology and caecal microflora in fasted broiler chicks

2017 ◽  
Author(s):  
Isa Coskun ◽  
Firdevs Korkmaz ◽  
Aydin Altop ◽  
Huseyin Cayan ◽  
Gokhan Filik ◽  
...  
Keyword(s):  
Weight Gain ◽  
Growth Parameters ◽  
Live Weight ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Pollen Extract ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
In Ovo ◽  
Treatment Groups

This study was carried out to determine the effects of in ovo pollen extract injection on growth parameters, ileal histomorphology, and caecal microflora of fasted broiler chicks. In this experiment, 2×2 factorial experimental design was used. One d old, 120 healthy broiler chicks were allocated to 4 treatment groups and 6 replicates (5 mixed sex chicks allocated each replicates). Treatment groups were: A) Pollen extract injection and 24 h fasting (P24); B) Pollen extract injection and 48 h fasting (P48), C) Control, no injection 24 h fasting (C24) and D) Control, no injection 48 h fasting (C48). The experiment lasted 21 days. Live weight, feed consumption, feed conversion ratio were recorded weekly. Ileal histomorphology, caecal microbiota, organ weight were recorded at 21th days of experiment. In ovo pollen extract injection did not affect hatchability rate. At the end of 21 days, in ovo pollen extract injection did not affect feed intake, live weight gain, feed conversion ratio, inner organ development and ileal villi width irrespective to fasting 24 h and 48 h. In ovo pollen extract injection increased ileal villi length, caecal lactic acid bacteria and Saccharomyces Cerevisiae count, decreased caecal Enterobactericaea count. In conclusion, in ovo pollen extract injection can be applied for broiler eggs to improve weight gain, better digestion and gut health.

scholarly journals Dietary or in ovo Saccharomyces cerevisiae Supplementation Developed Growth, Caecal Microbiota and Gut Histology of Broiler Chicks

2018 ◽  
Vol 6 (7) ◽  
pp. 863 ◽  
Author(s):  
Salih Gülen ◽  
İsa Coşkun
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Live Weight ◽  
Basal Diet ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Feed Consumption ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
In Ovo ◽  
Treatment Groups

The aim of this study was to determine the effects of in ovo injection of Saccharomyces cerevisiae (SC) to fertile Ross 308 broiler eggs or dietary supplementation on growth performance, internal organ development, gut histomorphology and cecum microbiota during 14 d of growing period. This study was designed as 2×2 factorial experimental design. Fertile 92 Ross 308 eggs were injected with SC solution 0.2ml at 18d of hatch and 90 eggs non-injected as control, afterward dietary SC supplementation was applied during the 14 d to broiler diet. In this study, 160 broiler chicks were used in four treatment groups at 10 replicate for each treatment group and 4 chicks for each replicates. Treatment groups were A) in ovo SC injection + dietary SC supplementation, B) in ovo SC injection + basal diet, C) no injection + dietary SC supplementation, D) no injection + basal diet as control. Live weight, feed consumption, feed conversion ratio and gut histomorphology, caecum microbiota, internal organ weight were recorded at 14 days of age. Live weight gain increased in C group than in the D group. Feed consumption, feed conversion ratio and internal organ weights were not affected by the treatments. Villi length and villi width increased in A group among the other treatment groups in jejunum, villi length increased in A and C groups among the other groups in ileum. Villi length/villi width ratio increased in A group than in the D group in ileum, was not different in jejunum. LAB counts in caecum were higher in A group than those of C and D groups, but was not different from B group. Enterobactericaea count was lower in A and B group than in the D group, was not different from C group. To conclude, results showed that dietary Saccharomyces cerevisiae supplementation increased broiler growth at 14 day by increasing villi development and improving gut health.

scholarly journals Growth performance, carcass indices and blood profile of broiler chickens fed tiger nut residue

2021 ◽  
Vol 6 (2) ◽  
pp. 50-57
Author(s):  
C. A. Essien ◽  
Keyword(s):  
Weight Gain ◽  
Live Weight ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Average Weight ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
Blood Profile ◽  
Final Weight ◽  
Average Weight Gain

A total of two-hundred-and-forty day old broiler chicks were used to study the response of broiler birds to diets containing graded levels of tiger nut residue (TNR) as a replacement for maize. The diets consisted of 0, 10, 20 and 30% of TNR as a replacement for maize as T1 (control), T2, T3 and T4 respectively. The birds were allotted to four dietary treatments of 4 replicates each containing 60 and 15 birds respectively in a completely randomized design. The data obtained from the experiment were subjected to one - way analysis of variance. The results showed that average weight gain (AWG) and final weight gain (FWG) were high for birds fed 10% TNR and increased numerically than the 0, 20 and 30% groups at the starter phase. In the finisher phase the average weight gain (AWG) and final weight gain (FWG) followed the same trend. Feed intake was not significantly affected by the diet at the starter and finisher phases. In the starter phase the T1 (control) recorded the best and the lowest feed conversion ratio but in the finisher phase, the best feed conversion ratio was observed in T2. The TNR inclusion had no significant (p˃0.05) effect on live weight, dressed weight, dressing percentage, cut-parts and organs of the birds. The haematological parameters were not significantly (p˃0.05) affected by the diets. All the biochemical parameters determined; serum protein, albumin, globulin, urea, creatinine, ALT, AST, cholesterol and triglyceride were not significantly (p˃0.05) affected by the treatment diet. It was concluded that tiger nut residue (TNR) as a replacement for maize at a 30% level of inclusion did not cause any deleterious effects on the performance, carcass and blood profiles of broilers

An appraisal of performance of broiler birds fed with different commercial feed in Kano State, Nigeria

2020 ◽  
Vol 18 (1) ◽  
pp. 57-62
Author(s):  
Mubarak Haladu ◽  
Ahmed Abubakar
Keyword(s):  
Weight Gain ◽  
Feed Intake ◽  
Live Weight ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
Live Weight Gain ◽  
Feed Cost ◽  
Commercial Feed

The experiment was carried out to determine the overall performance and economic analysis of broiler chickens fed different commercial diets marketed in Kano metropolis. A total of 112 day-old Zertek strain of broiler chicks were randomly allotted to four dietary treatments coded as A, B, C and Din a completely randomized design. Each group was replicated 4 times with seven birds per replicate. Birds were weighed at the onset of the experiment and weekly thereafter. Feed intake and live weight gain were measured, recorded and used to determine the feed conversion ratio. The chicks were managed on a deep litter system and the experiment lasted for six weeks. Feed and water were supplied ad libitum throughout the feeding trial. Results revealed that feed intake of birds ranged from 78.5-87.3 (g/b/d), live weight gain ranged from 49.3 – 53.9 (g/b/d) while feed conversion ratio ranged between 1.59 and 1.64. There were no significant (P > 0.05) differences in feed intake and feed conversion ratio. However, significant (P < 0.05) difference was observed in live weight gain where birds on treatments B, C, and D were superior to birds on treatment A. The market costs of the feeds at the time of the experiment were used to calculate the feed cost (₦ / kg), total feed cost (₦), feed cost (₦ /kg gain). Feed cost ₦/kg gain was best in treatment A. Keywords: Appraisal, Performance, Broiler birds, Commercial feed, Kano state.

Effect of processing methods on the nutritional value of Mucuna cochinchinensis to broiler chicks

2007 ◽  
Vol 47 (2) ◽  
pp. 125 ◽  
Author(s):  
S. N. Ukachukwu ◽  
F. C. Obioha
Keyword(s):  
Weight Gain ◽  
Protein Efficiency Ratio ◽  
Nutrient Retention ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Daily Weight Gain ◽  
Broiler Chicks ◽  
Feed Conversion ◽  
Efficiency Ratio ◽  
Crude Fibre

The performance and nutrient retention of broilers fed raw (RMD), toasted (TMD), boiled (BMD), soaked and boiled (SMD) or no (NMD) Mucuna cochinchinensis seed diets at both starter and finisher phases were assessed using 400 broiler chicks. The birds were fed a common proprietary feed (Top Feed) until 2 weeks of age, followed by a treatment diet for 3 weeks of the starter period, then 5 weeks on the finisher diet. At the starter phase, RMD significantly (P < 0.05) decreased liveweight, daily weight gain, protein efficiency ratio and encouraged poorer feed conversion ratio and higher cost per kilogram weight gain when compared with other diets. TMD decreased (P < 0.05) only the protein efficiency ratio. RMD also decreased (P < 0.05) retention of dry matter (DM), crude protein (CP), crude fibre (CF) and energy while TMD decreased (P < 0.05) retention of only DM, CP, and energy. At the finisher phase, RMD also significantly (P < 0.05) decreased daily weight gain, protein efficiency ratio and feed conversion ratio and increased cost per kg weight gain, while TMD decreased (P < 0.05) only the protein efficiency ratio and feed conversion ratio. RMD again decreased (P < 0.05) retention of DM, CP, CF and energy, while TMD, as in the starter phase, again decreased (P < 0.05) retention of DM, CP and energy. On a cumulative basis, RMD adversely affected (P < 0.05) all the parameters under investigation. TMD affected (P < 0.05) only the feed conversion ratio, protein efficiency ratio and cost per kg weight gain. Boiling Mucuna cochinchinensis, therefore, encourages significantly better performance of chicks, higher nutrient retention and lower cost per kg weight gain than toasting, whereas soaking before boiling does not add any advantage to boiling alone.

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 (%).

scholarly journals Effect of raw and cooked mucuna seed meal based diets on the performance, nutrient digestibility and haematology of weaned rabbits

2021 ◽  
Vol 33 (2) ◽  
pp. 209-215
Author(s):  
A. A. Taiwo ◽  
A. D. Adejuyigbe ◽  
E. O. Talabi ◽  
G. Okumakuma ◽  
E. A. Adebowale
Keyword(s):  
Weight Gain ◽  
Blood Cell ◽  
Control Diet ◽  
Live Weight ◽  
Nutrient Digestibility ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Seed Meal ◽  
Feed Conversion ◽  
Dietary Treatments

A study was conducted for eight weeks to determine the effects of raw and cooked mucuna seed meal (MSM) based diets on the performance and haematological characteristics of cross-bred weaned rabbits. Three experimental diets were formulated to contain: 0% MSM (control diet A), X raw MSM (diet B) and 20% cooked MSM (diet C). Twelve cross-bred weaned rabbits with mean initial live-weight of about 550 g were randomly assigned to three dietary treatments. The experimental design was completely randomized arrangement. The feed intakes (115.12, 114.44, 116.15g/day) and weight gains (17.19, 12.72, 14.28g/day) for diets A, B and C respectively were similar (P>0.05) for the three treatments. Rabbits fed the control diet A had the best (P<0.05) feed conversion ratio (6.68). The packed cell volume (PCV), haemoglobin (HB), red blood cell (RBC) and white blood cell (WBC) values obtained for the three treatments were not statistically different (P>0.05) from one another. The HB, RBC, WBC values of rabbits fed on 20% cooked MSM based diet had comparable values to those on the control diet. Based on the weight gain and the haematology, 20% cooked mucuna seed meal can be included in the diet of weaned rabbits.

scholarly journals Growth performance of starter broiler starter chicks fed soaked and fermented baobab (Adansonia digitata) seed meal based diets

2021 ◽  
Vol 48 (1) ◽  
pp. 69-75
Author(s):  
A. R. Akintunde ◽  
I. H. Saidu ◽  
M. A. Oguntoye ◽  
H. K. Mohammed ◽  
A. Mustapha ◽  
...  
Keyword(s):  
Weight Gain ◽  
Feed Intake ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Seed Meal ◽  
Feed Conversion ◽  
Treatment Groups ◽  
Feed Cost ◽  
Final Weight ◽  
Dietary Treatments

Means of cutting down cost of feed resources in order to bridge the wide gap between demand and supply of animal protein in livestock production is a great concern in the poultry industry. This study was conducted to investigate the effect of feeding diets containing soaked and fermented Baobab seed meal (BSM) on the growth performance of broiler starter chicks. A total of 150, one-day old chicks were randomly distributed into five treatment groups. Treatments were replicated three times with 10 chicks per replicate in a completely randomized design (CRD). The dietary groups were designated as T1 for control (0 % BSM), T2 (7.5 % SBSM), T3 (15.0% SBSM), T4 (22.5% FBSM) and T5 (30 % FBSM). Parameters monitored include final weight, weight gain, feed intake, feed conversion ratio, feed cost per kg gain (N) and mortality (%) The experiment lasted for 4 weeks. The results showed that the dietary treatments had significant (P<0.05) effect on all the parameters measured. Final weight and total weight gain were similar and significantly (P<0.05) higher in birds fed diets T2 and T4 when compared to other dietary treatments. However, birds in T5 group had the least significant (P<0.05) values 366.67 and 217.34 g/bird respectively. Daily weight gain (7.76 g/bird/day), total and daily feed intake (873.33 g and 31.19 g/bird/day) of birds followed similar trend and were significantly (P<0.05) lower in T5 group compared to other treatments. Feed conversion ratio of birds fed diet T5 had significantly (P<0.05) higher value (4.29) when compared to those in other treatment groups. Feed cost per kg gain (N) was significantly (P<0.05) lower and similar in birds fed T2, T3 and T4 when compared to values obtained in the control group (N253.27) and T5 (N 327.52). Mortality (%) only occurred in birds fed T5. It was therefore concluded that inclusion of 22.5% fermented baobab seed meal in broiler diets improved performance and had no negative effect on the health status of birds.     Des moyens de réduire le coût des ressources alimentaires afin de combler le defi posé à cause de la demande et l'approvisionnement en protéines animales dans la production animale est une grande préoccupation dans l'industrie avicole. Cette étude a été menée pour étudier l'effet des regimes alimentaires contenant de la farine de graines de baobab trempée et fermentée (le 'BSM') sur les performances de croissance des poussins de départ. Un total de 150 poussins âgés d'un jour ont été répartis au hasard en cinq groupes de traitement. Les traitements ont été répliqués trois fois avec 10 poussins par réplique dans une conception complètement randomisée (le 'CRD'). Les groupes diététiques ont été désignés comme T1 pour le contrôle (0% BSM), T2 (7,5% SBSM), T3 (15,0% SBSM), T4 (22,5% FBSM) et T5 (30% FBSM). Les paramètres surveillés comprennent le poids final, le gain de poids, la prise alimentaire, le taux de conversion alimentaire, le coût de l'alimentation par kg de gain (N) et la mortalité (%). L'expérience a duré 4 semaines. Les résultats ont montré que les traitements diététiques avaient un effet significatif (P <0,05) sur tous les paramètres mesurés. Le poids final et le gain de poids total étaient similaires et significativement (P<0,05) plus élevés chez les oiseaux nourris avec les régimes T2 et T4 par rapport aux autres traitements diététiques. Cependant, les oiseaux du groupe T5 avaient les valeurs les moins significatives (P <0,05) 366,67 et 217,34 g / oiseau respectivement. Le gain de poids quotidien (7,76 g / oiseau / jour), l'apport alimentaire total et quotidien (873,33 g et 31,19 g / oiseau / jour) des oiseaux ont suivi une tendance similaire et étaient significativement (P<0,05) inférieurs dans le groupe T5 par rapport aux autres traitements. Le rapport de conversion alimentaire des oiseaux nourris au régime alimentaire T5 avait une valeur significativement plus élevée (P <0,05) (4,29) par rapport à ceux des autres groupes de traitement. Le coût de l'alimentation par kg de gain (N) était significativement (P <0,05) plus faible et similaire chez les oiseaux nourris T2, T3 et T4 par rapport aux valeurs obtenues dans le groupe témoin (N253,27) et T5 (N 327,52). La mortalité (%) n'est survenue que chez les oiseaux nourris au T5. Il a donc été conclu que l'inclusion de farine de graines de baobab fermentée à 22,5% dans les régimes alimentaires des poulets de chair améliorait les performances et n'avait aucun effet négatif sur l'état de santé des oiseaux.

scholarly journals Penampilan Ayam Pedaging yang Mengkonsumsi Pakan Mengandung Tepung Kulit Nanas Disuplementasi dengan Yoghurt

2013 ◽  
Vol 13 (2) ◽  
pp. 15-20 ◽  
Author(s):  
Nurhayati Nurhayati
Keyword(s):  
Body Weight ◽  
Weight Gain ◽  
Broiler Chicken ◽  
Body Weight Gain ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Feed Consumption ◽  
Feed Conversion ◽  
Treatment Groups ◽  
Pineapple Peel

Broiler chicken performance feed ration containing pineapple peel meal and supplemented by yoghurtABSTRACT. An experiment was conducted to determine the broiler performance feed ration contained pineapple peel meal supplemented by yoghurt. A hundred broiler chickens 2 days old were used in this study those divided into 4 treatment groups and kept for 4 weeks. The treatments were level of pineapple peel meal (PPM) into the ration; P0 = ration without PPM, P1 = ration contained 5 % of PPM, P2 = ration contained 10 % of PPM and P3 = ration contained 15 % of PPM. To neutralize high crude fiber content in the ration, chickens were supplemented by yoghurt consisted 3,3 x 108 CFU/ml of Lactobacillus bulgaricus and Streptococcus thermophilus as much as 3 ml/kg body weight. Yoghurt was offered in the morning before feeding. Each treatment was replicated 5 times. The experiment was assigned into Completely Randomized Design with 4 treatments and 5 replications. Parameters were feed consumption, water consumption, body weight gain and feed conversion ratio. Data were analyzed by Analysis of variance (ANOVA) and significantly effect was tested by Duncan’s Multiple Range Test. Results of this study showed that there was no significant difference (P0.05) among 0, 5, and 10 % the treatment groups on feed consumption, water consumption, body weight gain and feed conversion ratio. Offered 15 % of pineapple peel to the chickens did not significantly (P0.05) increased feed consumption and conversion ratio but did not significantly (P0.05) decreased body weight gain.  It is concluded that pineapple peel meal might be mixed into the broiler chicken ration up to 10 % without any significant adverse effect  on performance when they were supplemented by yoghurt as much as 3 ml/kg of body weight.

scholarly journals Dietary evaluation of starter broiler chicks fed cooked cocoyam tuber meal (xanthosoma sagitifolium) as energy source in place of maize

2020 ◽  
Vol 46 (4) ◽  
pp. 153-160
Author(s):  
B. C. Anyaegbu ◽  
D. N. Onunkwo ◽  
G. Igwe ◽  
J. Nathaniel ◽  
C. M. Nkwo
Keyword(s):  
Energy Source ◽  
Body Weight ◽  
Weight Gain ◽  
Feed Intake ◽  
Body Weight Gain ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
The Body ◽  
Broiler Chicks ◽  
Feed Conversion

Considering the inherent attributes of tannia cocoyam (Xanthosoma sagitifolium) its appropriate utilization may enhance performance of starter broiler chicks. This study was therefore carried out to determine the dietary evaluation of starter broiler chicks fed cooked cocoyam tuber meal as energy source in place of maize. The cooked cocoyam tuber meal was used to replace maize at various levels of 25%, 50%, 75% and 100% respectively for diets 2, 3, 4 and 5 to determine the best replacement level that would give optimal performance in starter broiler chicks' diets. Result of the proximate composition of cooked cocoyam tuber meal showed that it contained 13.11% moisture, 2.60% ash, 1.85% ether extract, 3.90% crude protein, 9.45% crude fibre, 70.13% nitrogen free extract and 3004.37 Kcal/kgME. 150 day old Anak broiler chicks were used for the experiment. They were divided into 5 treatment groups of 30 broiler chicks each. Each treatment group was subdivided into 3 replicates of 10 broiler chicks each and kept in deep litter. Each starter diet was fed to a group of 30 starter broilers for 4 weeks using completely randomized design. They were given feed and water adlibitum. Parameters measured include initial body weight, final body weight, body weight gain, feed intake, feed conversion ratio and economics of production. In the starter broiler feeding trial, the starter broilers on 25% cooked cocoyam meal compared favourably with the control (P> 0.05) in terms of feed intake, body weight gain and feed conversion ratio and significantly (P > 0.05) performed between than those on 100% CCYM. The cost of production (N/Kg broiler) was however cheapest for diet 2 (25% CCYM) N395 versus control diet (N494.28). It was therefore concluded that cooked cocoyam tuber meal (Xanthosoma sagitifolium) could be used in the diets of starter broiler chicks' up to 25% without affecting the body weight gain, feed intake and feed conversion ratio as indicated in this study.

scholarly journals Estimation of the relative bioavailability of several zinc sources for broilers when fed a conventional diet

2012 ◽  
Vol 28 (3) ◽  
pp. 441-453
Author(s):  
M. Sahraei ◽  
H. Janmmohamadi ◽  
A. Taghizadeh ◽  
Ali Moghadam ◽  
S.A. Rafat
Keyword(s):  
Zinc Oxide ◽  
Body Weight ◽  
Weight Gain ◽  
Zinc Sulfate ◽  
Body Weight Gain ◽  
Basal Diet ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Broiler Chicks ◽  
Feed Conversion

An experiment was conducted with 312 day-old male broiler chicks in grower phase(8-28d) to estimate the biological availability of four sources Zinc (Zn), Zinc sulfate(ZnSO4.H2O), two sources of Zinc oxide(ZnO FG1 and ZnO FG2) and Bioplex Zn. Zinc sulfate (ZnSO4.H2O) was used as the standard in the bioavailability assay. Chicks were allotted randomly to 13 dietary treatments with 6 birds per replicate and 4 replicates per treatment, that included an unsupplemented corn-soybean meal basal diet (25.50 mg of Zn/kg of DM), or the basal diet supplemented with 100, 150 or 200 mg/kg of DM as either ZnSO4.H2O (33 % Zn), Zinc oxide FG1(72%Zn), Zinc oxide FG2 (75%Zn) or Bioplex Zn (15% Zn). Dietary Zn level and source had no effect (P>0.05) of feed intake or body weight gain of chicks during first and second weeks of experimental periods, but feed conversion ratio in the first and second week and feed intake, body weight gain or feed conversion ratio in third week and total experimental periods were significant difference between treatments (P<0.05). The relative biological availability values using body weight gain were estimated to be 59, 99 or 45 for three levels of Zinc oxide FG1, 64, 78 or 31 for three levels of Zinc oxide FG2 and 151, 200 or 147 for three levels of Bioplex Zn, respectively. From the standpoint of bioavailability, Bioplex Zn was more available to broiler chicks than Zn from other sources and can be used by the feed industry as sources of supplemental Zn for broiler chickens.

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