Poultry Research Station

Ankara, Turkey

Poultry Research Station

Ankara, Turkey

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Kamanli S.,Poultry Research Station | Durmus I.,Ordu University | Yalcin S.,Ege University | Yildirim U.,Poultry Research Station | Meral O.,Ankara University
Journal of Thermal Biology | Year: 2015

This study was designed to determine the effect of prenatal temperature conditioning on hatching and live performance of laying chickens, and response to heat and cold stress during laying period. A total of 3600 eggs obtained from ATAK-S brown parent stock were incubated at control (37.5°C, CONT-Inc), cyclic low (36.5°C/6h/d from 10 to 18d of incubation, LOW-Inc) or high (38.5°C/6h/d from 10-18d of incubation, HIGH-Inc) incubation temperatures. Hatched chicks per incubation temperature were reared under standard rearing conditions up to 26wk. From 27 to 30wk, hens from each incubation temperature were divided into 3 environmentally controlled rooms and reared at control (20±2°C, CONT-Room), low (12±2°C, COLDS) or high (32±2°C, HEATS) temperatures. Hatching performance, body weight, egg production, and plasma triiodothyronine (T3) and thyroxine (T4) levels and oxidant and antioxidant activities were evaluated.The highest hatchability was for LOW-Inc chicks while HIGH-Inc chick had similar hatchability to CONT-Inc. There was no effect of incubation temperatures on plasma MDA, GSH-Px, activities and T4 concentrations on day of hatch. LOW- Inc chicks had higher SOD activities and T3 concentrations compared to the other groups. Although chick weight was similar among incubation temperature groups, CONT-Inc chicks were heavier than those cyclic incubation temperature groups until 12wk of age. Incubation temperature had no effect on sexual maturity age and weight and egg production of laying hens. From 27 to 30wk, regardless of incubation temperature, HEATS hens lost weight from day 0 to 10, had the highest cloacal temperatures and lowest feed consumption and egg production while COLDS hens had the lowest cloacal temperatures. At day 5, T4 level was higher in LOW-Inc hens at COLDS but it was higher in HIGH-Inc hens at HEATS compared to CONT-Inc. These data may suggest a modification in thyroid activity of hens that were conditioned during the incubation period. Moreover under COLDS condition, SOD production of LOW-Inc hens was higher than those of CONT- and HIGH-Inc hens indicating an induction in antioxidant enzyme activity. Nonetheless, prenatal temperature conditioning of laying hen embryos had no advantage on laying performance of hens under temperature stress conditions. © 2015.


Durmus I.,Ordu University | Goger H.,Poultry Research Station | Demirtas S.,Poultry Research Station | Yurtogullari S.,Poultry Research Station
Animal Production Science | Year: 2012

The study was carried out to identify some production traits of the pure Barred Rock 1 (BR1) line and rapid slow feathering line crosses derived from the BR1 pure line, in addition to F1 crosses of all these dam lines with Rhode Island Red 1 sire line. The BR1 line previously used a brown layer dam line for barred/non-barred day-old chick auto-sexing and synthetic slow and rapid wing feathering lines. Parent lines showed significant differences in sexual maturity and egg production (P < 0.01) and early embryonic mortality (P <0.05). However, there was no significant difference in weight at sexual maturity, average egg weight, hatchability of fertile eggs, hatchability of total eggs set, and middle and late embryonic mortalities. A significant difference was found among F1 crosses with respect to weight at sexual maturity (P < 0.05), but no significant difference (P > 0.05) could be determined for age at sexual maturity and egg production. Overall, rapid feathering hens had better production traits than slow feathering hens. The dual crossbred parent lines exhibited almost the same level of egg production traits compared with the pure line. © 2012 CSIRO.


Mizrak C.,Poultry Research Station | YenIce E.,Poultry Research Station | Kahraman Z.,Poultry Research Station | Tunca M.,Poultry Research Station | And 2 more authors.
Ankara Universitesi Veteriner Fakultesi Dergisi | Year: 2014

In this experiment, sepiolite (% 1.5 and % 3) and mannanoligosaccharide (MOS, % 0.1) were fed to layers each receiving 120 ppb aflatoxin, and were compared to control (K) and negative control (NK) groups. The experiment began at 26 wk of hen age and continued for 12 wk. Each of the five dietary treatments was randomly assigned to six replicates each included six hens. There were no significant differences (p>0.05) in livability, live weight change, egg weight and feed intake between the groups. NK had worse feed conversion ratio than control (P<0.05). The addition of % 1.5 sepiolite resulted in an increase in egg production and egg mass in comparison to NK and MOS groups, and in an increase in feed efficiency (P<0.05). There were no differences between the groups in parameters characterizing egg quality, namely, in the ratio of cracked-broken eggs, albumen height, haugh unit, shape index, shell thickness, and shell resistance, moreover, in the colour (RYCF), shine (L) and yellowness (b) of egg yolk (P>0.05). Aflatoxin was not detected in eggs obtained from any of the groups. The pH of faeces of hens in the NK group was higher than that of birds in the K and the 3 % sepiolite-treated groups (p<0.05). The proportion of dry matter of the feces was the lowest in the NK group, nevertheless, the difference between the groups was not significant (p>0.05). The addition of MOS and sepiolite to the feed reduced the degree of digestion of aflatoxin by % 6-12. As a result, sepiolite supplementation to laying hen diets containing aflatoxins can be concluded that had the beneficial effects on hen performance.


Yenice E.,Poultry Research Station | Mzrak C.,General Directorate of Agricultural Research and Policies | Gultekin M.,Poultry Research Station | Atik Z.,Poultry Research Station | Tunca M.,Poultry Research Station
Biological Trace Element Research | Year: 2015

In the present study, the effects of dietary supplementation of organic and inorganic Mn, Zn, Cu, and Cr mixtures using two different levels (80, 60, 5, and 0.15 mg/kg and 40, 30, 2.5, and 0.07 mg/kg, respectively) on the bioavailability of these trace minerals and Ca in late-phase laying hens were evaluated. Three hundred and sixty laying hens (Barred Rock) at 50 weeks of age were used, and the duration of study was 16 weeks. Each of the four dietary regimes was randomly assigned to six replicates, which included 15 hens each. Organic trace minerals were provided as methionine chelates; inorganic Mn, Zn, and Cr were provided as oxides; and Cu was provided as sulfate. The organic form significantly increased the concentrations of serum Mn, Zn, Cu, and Ca; egg Mn, Zn, Cu, and Cr; and eggshell Zn and Cr compared with the inorganic form. However, the form of trace minerals did not affect the concentrations of serum Cr and eggshell Mn, Cu, and Ca. High-level addition of trace minerals significantly increased serum Mn and Zn; egg Mn, Zn, Cu, and Cr; and eggshell Mn, Zn, and Cu concentrations compared with low-level addition but did not affect serum Cu, Cr, and Ca or eggshell Cr and Ca concentrations. While the organic form reduced the excretion of Mn, Zn, Cu, Cr, and Ca, the high-level supplement increased Mn, Zn, and Cu excretion. The addition level did not affect Cr and Ca excretion. These results demonstrate that dietary supplementation of an organic Mn, Zn, Cu, and Cr mixture increases the bioavailability of Mn, Zn, Cu, Cr, and Ca compared with inorganic sources and that a lower level of trace mineral supplementation results in lower mineral excretion, particularly in an organic form. © 2015, Springer Science+Business Media New York.


Razuki W.M.,Poultry Research Station | Farhan S.H.,Poultry Research Station | Jasim F.H.,Poultry Research Station | Alkhilani F.M.H.,Poultry Research Station | Jameel F.R.,Poultry Research Station
International Journal of Poultry Science | Year: 2015

The present study was carried out during summer season to examine the response of two broilers strains (RS = Ross 308 and CB = Cobb 500) to protein concentrate removal from finisher diet (28-42 d of age) on performance and carcass parameters. On day 28 of age, a total of 960 birds of two strains were randomly assigned on 32 replicates (16 replicates for each strains) of 30 chicks per replicate. Each replicate consist of 15 males and 15 females for each strain which was distinguished by phenotype. Tow finisher dietary treatments were: (1) the basal diet with protein concentrate supplementation; (2) the basal diet without protein concentrate supplementation were fed for both strains. Body weight (BW) and gain (BWG), feed consumption, feed conversion ratio, mortality and carcass parameters were examined. Results showed that the RS strain achieved greater BW, weight gain and feed consumption than CB strain. While, feed conversion ratio and mortality was not affected by strain. Regardless of strain, results showed that removal of protein concentrate (PC) from finisher ration caused reduction in BW at 35 days and 42 days of age and BWG. The reduction in BWG due to PC removing was 8.15% for 7 days and 18.02% for 14 days. As well as, reduction also occurred in feed consumption and feed conversion ratio from 28 to 42 days of age. In contrast, omitting PC from finisher diets had no effect on carcass yield, breast and thigh meat and abdominal fat pad. In conclusion, the results from this study suggest that 14 days withdrawal of protein concentrate prior marketing have adversely negative effect on performance but not on carcass parameters of both strains of broilers during hot climate. © Asian Network for Scientific Information, 2015.


Yenice E.,Poultry Research Station | Mizrak C.,Agricultural Research and Policy | Gultekin M.,Poultry Research Station | Atik Z.,Poultry Research Station | Tunca M.,Poultry Research Station
Ankara Universitesi Veteriner Fakultesi Dergisi | Year: 2015

This study was conducted to compare the effects of organic or inorganic Mn, Zn, Cu and Cr mixture using two different levels (80, 60, 5 and 0.15 mg/kg and 40, 30, 2.5 and 0.07 mg/kg, respectively) on the performance, egg quality and hatching characteristics of laying breeder hens. The experiment began with a total of 360 hens from Barred Rock line at 50 weeks of age and continued for 16 weeks. Each of the four dietary treatments was randomly assigned to six replicates, which included 15 hens each. Different trace mineral applications did not result in a significant effect on performance parameters such as livability, body weight gain, egg production, egg weight and mass, feed intake, and feed conversion. No significant differences in egg quality parameters such as damaged egg rate, shape index, eggshell rate and thickness, albumen height and haugh unit were observed among the groups. However, the low level of trace minerals resulted in a significant reduction in eggshell breaking strength (P < 0.05). Different trace mineral applications did not show a significant effect on hatching and fertilised eggs ratio. The dietary supplementation of organic (chelated with methionine) Mn, Zn, Cu and Cr at high levels (80, 60, 5 and 0.15 mg/kg, respectively) increased the hatchability of the fertilised eggs and hatchability compared to that of the other groups (P < 0.05). © Chartered Inst. of Building Services Engineers. All Rights Reserved.


Hamodi S.J.,University of Baghdad | al-Khalani F.M.,Poultry Research Station
Advances in Environmental Biology | Year: 2011

Four hundred twenty unsexed broiler chicks Cobb were used to study the effect of two source of medicinal plants (Anise seed, A and Roselle flower, K) supplementation on productive performance, dressing percentages, internal organ weights, abdominal fat and bacteria count (E.coli and Staphylococci)in small intestine and colon. The broiler chicks Cobb were divided into three equal groups with four replicate (35 bird in each)fed three diets, Diet 1 (control group) contain none of the feed additives. Diet 2 and 3 (group 2 and 3) contain 6kg/Ton from A and K, respectively. The results revealed significantly (p <0.05)increases in live body weight, body weight gain, fedd consumption, feed conversion ratio, production index and significantly (p <0.05) reduction in mortality in A and K treatment groups as compared with control group. Dressing percentage, liver and heart weights supplement groups (A and K) were significantly (p <0.05) increased, while abdominal fat were significantly (p <0.05) reduced as compared with control group. However non significant differences(p>0.05) were shown across treatment groups in gizzard weight. The weights of primary carcass cuts (breast, thigh and drumstick) of supplemented groups (A and K) were significantly (p <0.05) increased and the secondary carcass cuts weights (neck, wings and back) were significantly (p <0.05) reduced as compared with control group. A count No. of harmful bacteria E. coli and Staphylococci in the small intestine and colon were significantly (p <0.05) decreased in supplemented groups as compared with those in control group. In conclusion, feed additives such as Anise and Roselle were improved the productive performance of broiler chicks through increasing dressing percentage and reduce abdominal fat and harmful bacteria count in small intestine and colon. Also Roselle were the best one than other medicinal plant Anise by improved the productive performance.


Durmus I.,Poultry Research Station
Asian Journal of Animal and Veterinary Advances | Year: 2012

The study was conducted to identify the effects of the use of various disinfecting materials for disinfecting incubating eggs on the hatching results and total bacterial count. To this end, the disinfectants coded as A, B, C and D depending on their active ingredients. Disinfectants were compared according to their effects on the hatching results and total bacterial counts. No difference was found among groups with regard to hatchability, hatchability of fertile eggs, early, middle and late embryonic mortality, number of deformed chicks (p>0.05). As for the total bacterial count after the disinfection application, no significant difference was found among groups (p>0.05). © 2012 Academic Journals Inc.


PubMed | Poultry Research Station
Type: Journal Article | Journal: Biological trace element research | Year: 2015

In the present study, the effects of dietary supplementation of organic and inorganic Mn, Zn, Cu, and Cr mixtures using two different levels (80, 60, 5, and 0.15 mg/kg and 40, 30, 2.5, and 0.07 mg/kg, respectively) on the bioavailability of these trace minerals and Ca in late-phase laying hens were evaluated. Three hundred and sixty laying hens (Barred Rock) at 50 weeks of age were used, and the duration of study was 16 weeks. Each of the four dietary regimes was randomly assigned to six replicates, which included 15 hens each. Organic trace minerals were provided as methionine chelates; inorganic Mn, Zn, and Cr were provided as oxides; and Cu was provided as sulfate. The organic form significantly increased the concentrations of serum Mn, Zn, Cu, and Ca; egg Mn, Zn, Cu, and Cr; and eggshell Zn and Cr compared with the inorganic form. However, the form of trace minerals did not affect the concentrations of serum Cr and eggshell Mn, Cu, and Ca. High-level addition of trace minerals significantly increased serum Mn and Zn; egg Mn, Zn, Cu, and Cr; and eggshell Mn, Zn, and Cu concentrations compared with low-level addition but did not affect serum Cu, Cr, and Ca or eggshell Cr and Ca concentrations. While the organic form reduced the excretion of Mn, Zn, Cu, Cr, and Ca, the high-level supplement increased Mn, Zn, and Cu excretion. The addition level did not affect Cr and Ca excretion. These results demonstrate that dietary supplementation of an organic Mn, Zn, Cu, and Cr mixture increases the bioavailability of Mn, Zn, Cu, Cr, and Ca compared with inorganic sources and that a lower level of trace mineral supplementation results in lower mineral excretion, particularly in an organic form.

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