Nizamettin Şenköylü - Academia.edu (original) (raw)

Papers by Nizamettin Şenköylü

Research paper thumbnail of Tam yağlı soyanın metabolik enerji değerinin broyler performansından tahmini

Research paper thumbnail of Implications of protease addition to diets with NSPases and different levels of phytase in broiler diets

Research paper thumbnail of Using Rice Bran in Laying Hen Diets

Journal of Central European Agriculture, 2006

Rice bran is an energy and protein rich ingredient used in poultry feeding. To balance energy and... more Rice bran is an energy and protein rich ingredient used in poultry feeding. To balance energy and protein requirements. The purpose of this study is to examine the effects of rice bran on performance and egg quality during peak production of a commercial White laying strain of 22 week of age. Dietary treatments were consisted by inclusion of rice bran at 0, 5, 10 and 15% levels. Each treatment had 6 reps in which 12 birds were randomly assigned in wired fl oor battery cages equipped with nipple drinkers and through feeders. Layers accessed to feed and water freely. Lighting regimen was adjusted to 16h light/8h dark. The experiment lasted for 10 weeks. Overall results of the present experiment indicated that rice bran could be included up to 10% without any adverse affect on laying performance, egg quality and digestive organs.

Research paper thumbnail of Effects of Saccharomyces Cerevisiae And/Or Mannanoligosaccharide on Performance, Blood Parameters and Intestinal Microbiota of Broiler Chicks

Bulgarian Journal of Agricultural Science, 2010

KOC, F., H. SAMLI, A. OKUR, M. OZDUVEN, H. AKYUREK and N. SENKOYLU, 2010. Effects of Saccharomyce... more KOC, F., H. SAMLI, A. OKUR, M. OZDUVEN, H. AKYUREK and N. SENKOYLU, 2010. Effects of Saccharomyces cerevisiae and/or mannanoligosaccharide on performance, blood parameters and intestinal microbiota of broiler chicks. Bulg. J. Agric. Sci., 16: 643-650 The experiment was carried out to evaluate the effects of Saccharomyces cerevisiae and mannanoligosaccharide in single or in combination on growth performance, blood parameters and intestinal microbiota in 120, one-d-old, Ross 308 male broiler chicks raised from 1 to 21 days of age. There were 4 dietary treatments; (i) control, (ii) MOS (2 kg/ton feed), (iii) yeast (2 kg/ton feed) and (iv) yeast (2 kg/ton feed) + MOS (2 kg/ton feed). Weight gain and feed intake of the broilers were significantly influenced by the addition of Saccharomyces cerevisiae with/without MOS. The results suggest that supplementation of S. cerevisiae w/wo MOS to diets for growing broilers might enhance counts of LAB and yeast in the gut. In addition, the S. cerev...

Research paper thumbnail of An experiment to detect the effects of oil supplementation at different levels upon commercial laying white performance

Journal of Tekirdag Agricultural Faculty, 1993

Research paper thumbnail of The possibility of using sunflower soapstock and tallow as an energy source in broiler rations

Research paper thumbnail of An in vitro Assessment of Nutritional and Physical Characteristics of Wheat Varieties Obtained from Thrace and Aegean Regions for Poultry

Pakistan Journal of Nutrition, 2005

Research paper thumbnail of Effects Of Sweet Apricot Kernel Meal On Performance And Intestinal Microbiota in Broiler Chickens Etlik Piliçlerde Kayısı Küspesinin Performansa Ve Bağırsak Mikrobiyotasi Üzerine Etkileri

Yurutulen bu calisma ile kayisi cekirdegi kuspesinin (KCK) etlik pilic performansi ve bagirsak mi... more Yurutulen bu calisma ile kayisi cekirdegi kuspesinin (KCK) etlik pilic performansi ve bagirsak mikrobiyotasi uzerine etkilerinin ortaya konulmasi amaclanmistir. Denemede, tel kafeslerde yetistirilen yuz yirmi adet etlik pilic kullanilmistir. Deneme 21 gun surmustur. Calismada, farkli duzeylerde KCK (%0, 5, 10 ve 20) iceren dort muamele bulunmaktadir. Kayisi cekirdegi kuspesini %0 ve 5 tuketenlere gore, %20 tuketen gruplarda daha iyi canli agirlik artisi gorulmustur. Bununla birlikte, %0, 5 ve 10 KCK iceren rasyonlarla beslenen hayvanlar, %20 KCK tuketen gruplara gore daha az yem tuketmistir. Ileum mikrobiyotasi da muamelelerden onemli derecede etkilenmistir. %10 KCK iceren rasyonu tuketen gruplarin ileal icerikteki laktik asit bakteri sayilari, diger gruplara gore onemli derecede daha dusuk bulunmustur. Bununla birlikte, maya ve koliform sayilari %10 KCK tuketen gruplarda en yuksek saptanmistir. Anahtar sozcukler: Kayisi cekirdegi kuspesi, etlik pilic, yem, ileum, laktik asit bakter...

Research paper thumbnail of Implications of b-glucanase and pentosanase enzymes in low-energy low-protein barley and wheat based broiler diets

Czech Journal of Animal Science, 2011

This study was conducted to test the effects of a commercial enzyme (with beta-glucanase and pent... more This study was conducted to test the effects of a commercial enzyme (with beta-glucanase and pentosanase activities) supplemented into low-protein low-energy barley and wheat based broiler diets on broiler performance. The enzyme was added at 500 g/ton into broiler grower and finisher diets consisting of mainly wheat at 76%, 85% or barley 67%, 75%, respectively. Four dietary treatments were wheat, wheat + enzyme, barley, barley + enzyme. Each treatment had six replications. This experiment was planned according to a completely randomised design by placing ten 14-day-old mixed male and female chicks into one experimental cage unit with wire floor. Cobb broiler chicks were used in this study. Experimental grower and finisher diets were fed to chicks between 14–28 and 28–42 days of age, respectively. One-day-old chicks were fed a standard starter diet (23% protein; 12.77 MJ ME/kg) according to NRC (1994) recommendations. Grower diet and finisher diets were formulated to be 10% lower th...

Research paper thumbnail of Etli̇k Pi̇li̇çlerde Kayisi Küspesi̇ni̇n Performansa Ve Bağirsak Mi̇krobi̇yotasi Üzeri̇ne Etki̇leri̇

Jotaf Tekirdag Ziraat Fakultesi Dergisi, Sep 9, 2014

Research paper thumbnail of Impacts of organic acids and nutrient density of basal diets on broiler growth and gut histomorphology

Research paper thumbnail of Performance and Egg Characteristics of Laying Hens Fed Diets Incorporated with Poultry By-Product and Feather Meals

Journal of Applied Poultry Research, 2005

The effects of poultry by-product meal (PBPM) and feather meal (FM) incorporated separately and i... more The effects of poultry by-product meal (PBPM) and feather meal (FM) incorporated separately and in combination in the diet on laying hen performance and egg characteristics during postpeak production were determined. Bovans White strain laying hens, 42 wk of age, were fed diets with 0% PBPM and FM, 5% FM, 5% PBPM, or 4% FM + 4% PBPM. Egg production, feed intake, and egg mass were not significantly affected by dietary treatments, whereas egg weight and feed conversion ratio (FCR) were significantly affected. Egg weights of hens receiving 4% FM + 4% PBPM were significantly lower than those fed the control diet, whereas those fed 5% FM or 5% PBPM were intermediate. FCR was significantly improved by the diets containing 5% FM or 5% PBPM compared with the diet containing 4% FM + 4% PBPM. Dietary PBPM decreased Haugh units, but FM did not. Egg breaking strength, shell weight, and weights of albumen and yolk were not affected by treatments. The results suggested that FM or PBPM could be incorporated up to 5% singly or up to 8% in combination in layer diets but with possible detrimental effects on Haugh units, egg weight, and FCR.

Research paper thumbnail of Nutritional Evaluation of a High-Oil Sunflower Meal in Broiler Starter Diets

Journal of Applied Poultry Research, 2006

Two experiments were conducted with broiler chicks to determine the nutritive value of highoil su... more Two experiments were conducted with broiler chicks to determine the nutritive value of highoil sunflower meal (HO-SFM), a sunflower oil extraction by-product obtained through screw-press extraction and expanding processes with a proximate composition of 32% CP, 12% crude fiber, and 19% ether extract. In Experiment 1, the effects of a high level (46.4%) of HO-SFM on chick performance and gastrointestinal organs were tested. The objective of Experiment 2 was to determine if pelleting the feed could overcome the bulkiness resulting from inclusion of HO-SFM at a high level. The results of Experiment 1 indicated that addition of 46.4% HO-SFM to broiler starter diets significantly (P < 0.05) depressed body weight, feed intake, and gain but not feed conversion. Fat pad and liver lipid were again significantly (P < 0.05) decreased in the HO-SFM treatment. Impaired performance might have been due to the difference of the density of HO-SFM diet (608 g/L) compared with the soybean meal control (723 g/L). When bulkiness was overcome by pelleting in Experiment 2, it was found that pelleting the feed significantly enhanced growth of broiler chicks compared with SFM or soybean meal mash diets. Liver weights and lipid content were again decreased in HO-SFM diets. The results of this study suggest that HO-SFM can be used up to 28% without adverse effects on broiler chicks. Further improvement was observed with pelleting. Liver weight and lipid content were consistently reduced by feeding HO-SFM.

Research paper thumbnail of Sunflower meal in poultry diets: a review

World's Poultry Science Journal, 1999

Sunflower meal (SFM) has the potential to be a major feed ingredient for poultry in many countrie... more Sunflower meal (SFM) has the potential to be a major feed ingredient for poultry in many countries not suitable for extensive soyabean cultivation. SFM is a good source of protein with amino acid availabilities similar to those of soyabean meal (SBM), and much higher than those in cottonseed or rapeseed meals. Its lysine content is relatively low but this can be resolved with supplemental lysine. Fibre content should be decreased to a minimum by dehulling during processing of the sunflower seed for oil extraction. Fibre < 12%) can still cause bulky feed at higher inclusion rates…

Research paper thumbnail of Effects of Storage Time and Temperature on Egg Quality in Old Laying Hens

Journal of Applied Poultry Research, 2005

Research paper thumbnail of Use of High Levels of Full-Fat Soybeans in Laying Hen Diets

Journal of Applied Poultry Research, 2005

Research paper thumbnail of Effect of Microbial Phytase on Growth Performance and Nutrients Digestibility in Broilers

Pakistan Journal of Nutrition, 2005

Research paper thumbnail of Assessment the Impacts of Dietary Electrolyte Balance Levels on Laying Performance of Commercial White Layers

Pakistan Journal of Nutrition, 2005

Research paper thumbnail of Effects of Poultry by Product Meal on Laying Performance Egg Quality and Storage Stability

Pakistan Journal of Nutrition, 2006

To examine the effects of poultry by-product meal (PBPM) with the diet on laying hen performance ... more To examine the effects of poultry by-product meal (PBPM) with the diet on laying hen performance and egg quality, 30 Bovans White strain laying hens of 40 wk of age, housed in individual cages, were randomly assigned to three dietary treatments. The diets were formulated with the inclusions of PBPM at 0, 5 and 10% levels. For the effect of PBPM on storage stability a 3x2x2 factorial arrangement was implemented. Thus, 3 PBPM levels (0, 5 and 10%), 2 storage temperatures (5 or 21EC) and 2 storage periods (5 or 10 days) were used to carry out this part of the experiment. Results of the present study indicated that, egg production, feed intake and egg mass were significantly (P > 0.05) affected by the dietary treatments, whereas feed conversion rate (FCR) was not significantly (P < 0.05) affected. Egg production (%), feed intake (g/hen/day) and egg mass (g/hen/day) ranged between 91.3-95.4, 100.6-107.3 and 56.0-60.6, respectively. Egg mass in groups fed the diets with the inclusions of 5% and 10% PBPM were significantly (P < 0.05) lower than that of the hens fed with the control diet. The diets with the inclusions of 5% PBPM significantly (P < 0.05) affected the internal egg quality parameters in terms of albumen % and the air cell size. However, none of the inclusion levels of PPM significantly (P > 0.05) affected the shell thickness, yolk percentage, shell weight and albumen pH. The results of the present study suggested that layer diets could be incorporated with PBPM up to 10% without causing any detrimental effects on laying performance and farmer profit. Overall these effects demonstrated that different levels of PBPM did adversely affected storage stability, except shell weight and air cell size.

Research paper thumbnail of The Possibilities of Using High Oil-Sunflower Meal and Enzyme Mixture in Layer Diets

Pakistan Journal of Nutrition, 2004

Research paper thumbnail of Tam yağlı soyanın metabolik enerji değerinin broyler performansından tahmini

Research paper thumbnail of Implications of protease addition to diets with NSPases and different levels of phytase in broiler diets

Research paper thumbnail of Using Rice Bran in Laying Hen Diets

Journal of Central European Agriculture, 2006

Rice bran is an energy and protein rich ingredient used in poultry feeding. To balance energy and... more Rice bran is an energy and protein rich ingredient used in poultry feeding. To balance energy and protein requirements. The purpose of this study is to examine the effects of rice bran on performance and egg quality during peak production of a commercial White laying strain of 22 week of age. Dietary treatments were consisted by inclusion of rice bran at 0, 5, 10 and 15% levels. Each treatment had 6 reps in which 12 birds were randomly assigned in wired fl oor battery cages equipped with nipple drinkers and through feeders. Layers accessed to feed and water freely. Lighting regimen was adjusted to 16h light/8h dark. The experiment lasted for 10 weeks. Overall results of the present experiment indicated that rice bran could be included up to 10% without any adverse affect on laying performance, egg quality and digestive organs.

Research paper thumbnail of Effects of Saccharomyces Cerevisiae And/Or Mannanoligosaccharide on Performance, Blood Parameters and Intestinal Microbiota of Broiler Chicks

Bulgarian Journal of Agricultural Science, 2010

KOC, F., H. SAMLI, A. OKUR, M. OZDUVEN, H. AKYUREK and N. SENKOYLU, 2010. Effects of Saccharomyce... more KOC, F., H. SAMLI, A. OKUR, M. OZDUVEN, H. AKYUREK and N. SENKOYLU, 2010. Effects of Saccharomyces cerevisiae and/or mannanoligosaccharide on performance, blood parameters and intestinal microbiota of broiler chicks. Bulg. J. Agric. Sci., 16: 643-650 The experiment was carried out to evaluate the effects of Saccharomyces cerevisiae and mannanoligosaccharide in single or in combination on growth performance, blood parameters and intestinal microbiota in 120, one-d-old, Ross 308 male broiler chicks raised from 1 to 21 days of age. There were 4 dietary treatments; (i) control, (ii) MOS (2 kg/ton feed), (iii) yeast (2 kg/ton feed) and (iv) yeast (2 kg/ton feed) + MOS (2 kg/ton feed). Weight gain and feed intake of the broilers were significantly influenced by the addition of Saccharomyces cerevisiae with/without MOS. The results suggest that supplementation of S. cerevisiae w/wo MOS to diets for growing broilers might enhance counts of LAB and yeast in the gut. In addition, the S. cerev...

Research paper thumbnail of An experiment to detect the effects of oil supplementation at different levels upon commercial laying white performance

Journal of Tekirdag Agricultural Faculty, 1993

Research paper thumbnail of The possibility of using sunflower soapstock and tallow as an energy source in broiler rations

Research paper thumbnail of An in vitro Assessment of Nutritional and Physical Characteristics of Wheat Varieties Obtained from Thrace and Aegean Regions for Poultry

Pakistan Journal of Nutrition, 2005

Research paper thumbnail of Effects Of Sweet Apricot Kernel Meal On Performance And Intestinal Microbiota in Broiler Chickens Etlik Piliçlerde Kayısı Küspesinin Performansa Ve Bağırsak Mikrobiyotasi Üzerine Etkileri

Yurutulen bu calisma ile kayisi cekirdegi kuspesinin (KCK) etlik pilic performansi ve bagirsak mi... more Yurutulen bu calisma ile kayisi cekirdegi kuspesinin (KCK) etlik pilic performansi ve bagirsak mikrobiyotasi uzerine etkilerinin ortaya konulmasi amaclanmistir. Denemede, tel kafeslerde yetistirilen yuz yirmi adet etlik pilic kullanilmistir. Deneme 21 gun surmustur. Calismada, farkli duzeylerde KCK (%0, 5, 10 ve 20) iceren dort muamele bulunmaktadir. Kayisi cekirdegi kuspesini %0 ve 5 tuketenlere gore, %20 tuketen gruplarda daha iyi canli agirlik artisi gorulmustur. Bununla birlikte, %0, 5 ve 10 KCK iceren rasyonlarla beslenen hayvanlar, %20 KCK tuketen gruplara gore daha az yem tuketmistir. Ileum mikrobiyotasi da muamelelerden onemli derecede etkilenmistir. %10 KCK iceren rasyonu tuketen gruplarin ileal icerikteki laktik asit bakteri sayilari, diger gruplara gore onemli derecede daha dusuk bulunmustur. Bununla birlikte, maya ve koliform sayilari %10 KCK tuketen gruplarda en yuksek saptanmistir. Anahtar sozcukler: Kayisi cekirdegi kuspesi, etlik pilic, yem, ileum, laktik asit bakter...

Research paper thumbnail of Implications of b-glucanase and pentosanase enzymes in low-energy low-protein barley and wheat based broiler diets

Czech Journal of Animal Science, 2011

This study was conducted to test the effects of a commercial enzyme (with beta-glucanase and pent... more This study was conducted to test the effects of a commercial enzyme (with beta-glucanase and pentosanase activities) supplemented into low-protein low-energy barley and wheat based broiler diets on broiler performance. The enzyme was added at 500 g/ton into broiler grower and finisher diets consisting of mainly wheat at 76%, 85% or barley 67%, 75%, respectively. Four dietary treatments were wheat, wheat + enzyme, barley, barley + enzyme. Each treatment had six replications. This experiment was planned according to a completely randomised design by placing ten 14-day-old mixed male and female chicks into one experimental cage unit with wire floor. Cobb broiler chicks were used in this study. Experimental grower and finisher diets were fed to chicks between 14–28 and 28–42 days of age, respectively. One-day-old chicks were fed a standard starter diet (23% protein; 12.77 MJ ME/kg) according to NRC (1994) recommendations. Grower diet and finisher diets were formulated to be 10% lower th...

Research paper thumbnail of Etli̇k Pi̇li̇çlerde Kayisi Küspesi̇ni̇n Performansa Ve Bağirsak Mi̇krobi̇yotasi Üzeri̇ne Etki̇leri̇

Jotaf Tekirdag Ziraat Fakultesi Dergisi, Sep 9, 2014

Research paper thumbnail of Impacts of organic acids and nutrient density of basal diets on broiler growth and gut histomorphology

Research paper thumbnail of Performance and Egg Characteristics of Laying Hens Fed Diets Incorporated with Poultry By-Product and Feather Meals

Journal of Applied Poultry Research, 2005

The effects of poultry by-product meal (PBPM) and feather meal (FM) incorporated separately and i... more The effects of poultry by-product meal (PBPM) and feather meal (FM) incorporated separately and in combination in the diet on laying hen performance and egg characteristics during postpeak production were determined. Bovans White strain laying hens, 42 wk of age, were fed diets with 0% PBPM and FM, 5% FM, 5% PBPM, or 4% FM + 4% PBPM. Egg production, feed intake, and egg mass were not significantly affected by dietary treatments, whereas egg weight and feed conversion ratio (FCR) were significantly affected. Egg weights of hens receiving 4% FM + 4% PBPM were significantly lower than those fed the control diet, whereas those fed 5% FM or 5% PBPM were intermediate. FCR was significantly improved by the diets containing 5% FM or 5% PBPM compared with the diet containing 4% FM + 4% PBPM. Dietary PBPM decreased Haugh units, but FM did not. Egg breaking strength, shell weight, and weights of albumen and yolk were not affected by treatments. The results suggested that FM or PBPM could be incorporated up to 5% singly or up to 8% in combination in layer diets but with possible detrimental effects on Haugh units, egg weight, and FCR.

Research paper thumbnail of Nutritional Evaluation of a High-Oil Sunflower Meal in Broiler Starter Diets

Journal of Applied Poultry Research, 2006

Two experiments were conducted with broiler chicks to determine the nutritive value of highoil su... more Two experiments were conducted with broiler chicks to determine the nutritive value of highoil sunflower meal (HO-SFM), a sunflower oil extraction by-product obtained through screw-press extraction and expanding processes with a proximate composition of 32% CP, 12% crude fiber, and 19% ether extract. In Experiment 1, the effects of a high level (46.4%) of HO-SFM on chick performance and gastrointestinal organs were tested. The objective of Experiment 2 was to determine if pelleting the feed could overcome the bulkiness resulting from inclusion of HO-SFM at a high level. The results of Experiment 1 indicated that addition of 46.4% HO-SFM to broiler starter diets significantly (P < 0.05) depressed body weight, feed intake, and gain but not feed conversion. Fat pad and liver lipid were again significantly (P < 0.05) decreased in the HO-SFM treatment. Impaired performance might have been due to the difference of the density of HO-SFM diet (608 g/L) compared with the soybean meal control (723 g/L). When bulkiness was overcome by pelleting in Experiment 2, it was found that pelleting the feed significantly enhanced growth of broiler chicks compared with SFM or soybean meal mash diets. Liver weights and lipid content were again decreased in HO-SFM diets. The results of this study suggest that HO-SFM can be used up to 28% without adverse effects on broiler chicks. Further improvement was observed with pelleting. Liver weight and lipid content were consistently reduced by feeding HO-SFM.

Research paper thumbnail of Sunflower meal in poultry diets: a review

World's Poultry Science Journal, 1999

Sunflower meal (SFM) has the potential to be a major feed ingredient for poultry in many countrie... more Sunflower meal (SFM) has the potential to be a major feed ingredient for poultry in many countries not suitable for extensive soyabean cultivation. SFM is a good source of protein with amino acid availabilities similar to those of soyabean meal (SBM), and much higher than those in cottonseed or rapeseed meals. Its lysine content is relatively low but this can be resolved with supplemental lysine. Fibre content should be decreased to a minimum by dehulling during processing of the sunflower seed for oil extraction. Fibre < 12%) can still cause bulky feed at higher inclusion rates…

Research paper thumbnail of Effects of Storage Time and Temperature on Egg Quality in Old Laying Hens

Journal of Applied Poultry Research, 2005

Research paper thumbnail of Use of High Levels of Full-Fat Soybeans in Laying Hen Diets

Journal of Applied Poultry Research, 2005

Research paper thumbnail of Effect of Microbial Phytase on Growth Performance and Nutrients Digestibility in Broilers

Pakistan Journal of Nutrition, 2005

Research paper thumbnail of Assessment the Impacts of Dietary Electrolyte Balance Levels on Laying Performance of Commercial White Layers

Pakistan Journal of Nutrition, 2005

Research paper thumbnail of Effects of Poultry by Product Meal on Laying Performance Egg Quality and Storage Stability

Pakistan Journal of Nutrition, 2006

To examine the effects of poultry by-product meal (PBPM) with the diet on laying hen performance ... more To examine the effects of poultry by-product meal (PBPM) with the diet on laying hen performance and egg quality, 30 Bovans White strain laying hens of 40 wk of age, housed in individual cages, were randomly assigned to three dietary treatments. The diets were formulated with the inclusions of PBPM at 0, 5 and 10% levels. For the effect of PBPM on storage stability a 3x2x2 factorial arrangement was implemented. Thus, 3 PBPM levels (0, 5 and 10%), 2 storage temperatures (5 or 21EC) and 2 storage periods (5 or 10 days) were used to carry out this part of the experiment. Results of the present study indicated that, egg production, feed intake and egg mass were significantly (P > 0.05) affected by the dietary treatments, whereas feed conversion rate (FCR) was not significantly (P < 0.05) affected. Egg production (%), feed intake (g/hen/day) and egg mass (g/hen/day) ranged between 91.3-95.4, 100.6-107.3 and 56.0-60.6, respectively. Egg mass in groups fed the diets with the inclusions of 5% and 10% PBPM were significantly (P < 0.05) lower than that of the hens fed with the control diet. The diets with the inclusions of 5% PBPM significantly (P < 0.05) affected the internal egg quality parameters in terms of albumen % and the air cell size. However, none of the inclusion levels of PPM significantly (P > 0.05) affected the shell thickness, yolk percentage, shell weight and albumen pH. The results of the present study suggested that layer diets could be incorporated with PBPM up to 10% without causing any detrimental effects on laying performance and farmer profit. Overall these effects demonstrated that different levels of PBPM did adversely affected storage stability, except shell weight and air cell size.

Research paper thumbnail of The Possibilities of Using High Oil-Sunflower Meal and Enzyme Mixture in Layer Diets

Pakistan Journal of Nutrition, 2004