Ahmet Uçar

Ankara University · Department of Animal Science

Objective: This research was conducted to determine the fattening performance of egg-type male quails (Coturnix coturnix japonica) sorted as non-breeders after 35 days using three different finisher rations. Material and Methods: Three different rations were used as finisher feed: cracked corn (CC), broiler chick feed (BCF), and cracked corn-chick...

This study was conducted to determine the effect of rearing quails in different rearing systems on egg production, egg quality characteristics, and incubation results. The 360 quails were distributed equally to 3 different rearing groups (cage, enriched cage, and floor) in a male:female mixed at the age of 3 weeks. The eggs were individually weighe...

In pheasants, which are generally raised in large flocks, stocking density is important for their growth and development, normal behavior and welfare. But there is still a lack of information on the optimum stocking density for game birds. This research was conducted on a total of 200 pheasants to examine the effects of low (5 pheasant/m²) and high...

This study aims to determine welfare parameters such as FPD and PQ scores at different slaughter ages in Barn and Free-Range Rearing Systems for Guinea Fowl and Pheasants. The birds randomly distributed with half of 200 Pheasant and 200 Guinea Fowl chicks were reared in both barn and free-range systems. Game birds were examined for both foot-pad de...

This study was aimed to determine the effect of hatching system (house and machine) and egg weight (heavy and light) on growth performance and meat quality traits in geese. The study was carried out for 12 weeks with a total of 220 Turkish native geese. The geese were individually weighed every 2 weeks during the study, on these same weeks feed con...

This study was performed to determine the effect of hatching system (house and hatcher) and egg weight (heavy and light) on pip-hatch time, hatchability and some gosling quality traits. A total of 389 eggs (fertile of candling) from 2-year-old Turkish Native Goose were used in the study. Before the incubation process, all eggs were individually num...

Amaç: Bu çalışmada, üç farklı yerleşim sıklığında yetiştirilen beç tavuklarının büyüme performansı, yem tüketimi, kesim ve karkas özelliklerinin belirlenmesi amaçlanmıştır.Materyal ve Metot: Çalışma kapalı yetiştirme sisteminde üç farklı yerleşim sıklığında (m2’de 6.6, m2’de 9.3, m2’de 12 beç tavuğu) yetiştirilen toplamda 252 beç tavuğu ile yürütül...

In this review, the welfare traits related to health status were revealed in laying hens reared in the cage and non-cage systems. In evaluating the health status of hens, infectious diseases, ectoparasites, production diseases, physical injuries, respiratory system diseases caused by air quality, and mortality were discussed. Each production system...

The objective of this study was to determine the effects of chick pipping location on live broiler performance. A total of 1350 hatching eggs were collected from a commercial flock of Ross 308 at 38 wk of age. Eggs were incubated with either their large end up (LEU) or small end up (SEU). After transfer on d 19, the air cell area of each fertile eg...

During incubation, temperature is the main environmental condition affecting the hatchability and chick quality. The effect of high temperature after the first week of incubation to hatching has been widely investigated. However very little is known during the early period of incubation. This study was conducted to investigate the effect of increas...

1. The effect of breeder flock age, storage temperature and a short period of incubation during egg storage (SPIDES) on albumen quality, development of blastoderm, and hatchability of long-stored eggs was evaluated. 2. Hatching eggs were collected from 28-week-old (young) and 40-week-old (prime) Ross female line grandparent flocks and were stored f...

Longer egg storage times (>7 d) are common in broiler parent and grandparent hatcheries to obtain the requested flock size. However, prolonged storage is known to decrease hatchability. The aim of this study was to investigate the effects of turning and short period of incubation (SPIDES) during 14 d storage on the stage of blastoderm development,...

Male and female mixed 200 pheasants were reared in intensive and outdoor conditions to assess the meat quality and some digestive tract traits. Color, pH, cooking loss, water holding capacity and drip loss were determined as meat quality traits. Production system did not have significant effect on most of meat quality traits. Conversely, most of th...

Quail production has increased in some countries in the last half century, however it is an alternative bird species that has not been among the main producing livestock. The aim of this study is to investigate the effects of genotype (Pharaoh and Italian) and egg weight (heavy and light) on egg weight loss and hatching results during the embryo de...

Quail production has increased in some countries in the last half century, however it is an alternative bird species that has not been among the main producing livestock. The aim of this study is to investigate the effects of genotype (Pharaoh and Italian) and egg weight (heavy and light) on egg weight loss and hatching results during the embryo de...

This study investigated the effect of feed and water access time on yolk sac utilization and subsequent broiler live performance. Hatching eggs were collected from commercial flocks of Ross 308 breeders at 35 and 39 wk of age in experiments 1 and 2, respectively. Chicks already out of their shells that still had some dampness on their down were rem...

A total of 211 pheasants ( Phasianus colchicus ) were reared using two different production systems (free range and intensive) to determine the effect of production system and slaughter age on growth performance and carcass traits. Birds were slaughtered at 14, 16, and 18 weeks of age. Production system did not significantly affect body weight unti...

This study investigated the effect of post-hatch holding and feed access time on subsequent live performance and carcass characteristics including wooden breast (WB) and white striping (WS). Broiler hatching eggs were collected from commercial flock of Ross 308 breeder at 33 wk of age. Chicks that still had some wet down, indicating they had just h...

Certain meat quality traits of guinea fowl that were reared in two production systems were determined in this study. Grey guinea fowl were reared in free-range and barn conditions. Birds were slaughtered at 14, 16 and 18 weeks old to determine meat quality traits. Some digestive traits were also determined. The type of production system affected th...

Pheasant rearing is rated in three main categories: show and hobby, public interest, and stocking for game birds and edible purposes. The goal of this pheasant breeding station is to put stocking for game birds in their natural habitat, mainly in the Karadeniz region. Contribution to the issues related to incubation in this station and determinatio...

Three experiments were conducted to determine the effects of increased CO2 concentration during the first 3 d of incubation on albumen height and pH, embryonic mortality, and hatchability of broiler hatching eggs. Hatching eggs were obtained from commercial broiler breeder flocks of Ross 308 at 39 and 37 wk of age in Experiments 1 and 2, respective...

The current study investigated the effect of chick body (rectal) temperature during the post-hatch handling period on body weight (BW) loss, yolk sac utilization, organ weights, and broiler live performance. Hatching eggs were obtained from a commercial flock of Ross 308 broiler breeders at 44 wk of age. A total of 384 chicks were separated into 3...

Poultry industry is contributing an increasing amount of the supply of affordable animal protein in the world and has a special importance in human nutrition. Turkish poultry sector is accepted as an industry together with modern facilities, production methods, thanks to international standards and international markets in close proximity, such as...

The poultry sector has become an industry chain with the influence of areas where it is as relevant as production to consumption. The world population is growing rapidly and significant developments have been made in the poultry industry in the last half-century with the use of intensive production techniques in order to obtain the highest level of...

In the World, food isn’t equally distributed. While the health problems of developed countries are obesity, other counties are facing hunger and related diseases. The expectation that the wold population will increase by 1/3 until 2050 will make it necessary to increase animal protein production. It was noted that, in Turkey, per person, meat consu...

Selection of meat-type chickens is primarily focused on growth rate and body composition improvement. The negative relationship between growth and reproduction related characteristics makes rearing and breeding applications difficult. Although the studies on chicken breeding have more than 150 years of history, the speed-up have been derived only i...

A total of 200 guinea fowl was reared in either barn or free-range systems and slaughtered at 14, 16, or 18 wk of age in order to determine the effects of production system on live weight, feed consumption, and some carcass and slaughter traits. Production system had a significant effect on live weight until 14 wk of age. Live weights were similar...

Küresel ısınma, enerji darboğazı, tarımsal verimlilik, nüfus artışı ve değişen tüketim alışkanlıkları önem verilmesi gereken güncel konulardır. Dünyadaki gıda üretimi herkesi besleyecek miktarda olmasına rağmen gıda eşit dağılmamaktadır. İnsanın beslenmesi geliri ile doğrudan ilişkilidir. Tüketiciler açısından fiyat öncelikli olmakla birlikte insan...

This experiment was conducted to determine the effect of eggshell temperatures (EST) during the hatching phase (18.5-21 day) on hatchability of fertile eggs and broiler performance. Eggs were collected from Ross 308 commercial broiler breeder flocks at 40 weeks old. Eggs were incubated at an EST of 37.7°C until d of incubation 18.5. Last 3 d of inc...

Successful incubation affects the number of healthy chicks in all poultry species. This study examined the effect of eggshell thickness on the hatching rates of guinea fowl and pheasant eggs. In total, 964 guinea fowl and 1,728 pheasant eggs were used in the study. Eggshell thickness was measured directly with an ultrasound gauge. Thicknesses range...

Incubation is an important factor in poultry production, particularly in species with relatively low fertility and hatchability rates. This study examined the effect of eggshell thickness on hatching traits of partridges (A. chukar). A total of 462 eggs from intensively reared partridges were separated into three groups according to eggshell thickn...

In this review, features and new trends on Turkish poultry industry are evaluated. Turkish poultry industry has rapidly developed in last years in especially broiler meat and egg production. As a result of these developments, The Turkish poultry sector is recognized as an industry. The industry has advantages such as modern facilities and productio...

Physical and sensory properties of thigh and breast meat were obtained from classic broilers, free-range broilers, organic breeder and village hens were compared in this study. For this purpose, water holding capacity, cooking loss and colour parameters (L *, a *, b *, H, Ch and ΔE) of meats were determined. After thigh and breast meat cooked in a...

1. A total of 400 Alectoris chukar partridges were reared in either barn or free-range production systems and slaughtered at 14, 16 or 18 weeks of age in order to determine the effects of production system, age and gender on carcass traits (live weight, carcass weight, carcass yield, carcass part and edible inner organ percentages at slaughtering)...

In this study, 2 slow growing broiler genotypes (SG1 and SG2) slaughtered at 49 days of age were compared with a fast growing commercial genotype slaughtered at 42 days of age (FG1) or 49 days of age (FG2) with respect to fattening performance, carcass characteristics and some economic parameters. The study was carried out in 2 periods and 260 chic...

This study examined the effect of reusing litter on performance, viability and foot pad dermatitis (FPD) rates of three meat-type chicken genotypes with different growth rates and slaughter weights. Caking and manure accumulation of reused litter were also measured. A total of 780 chicks of 3 genotypes were raised in compartments (26 chickens per c...

Çalışmada klasik, serbest gezinmeli ve organik etlik piliçler ile etlik piliç anaçları ve köy tavuğundan elde edilen but ve göğüs etlerinin fiziksel ve duyusal özellikleri karşılaştırılmıştır. Bu amaçla, etlerin su tutma kapasitesi, pişirme kaybı ve renk parametreleri(L*, a*, b* Hu, Ch ve ΔE) belirlenmiştir. Duyusal analizler, but ve göğüs etleri k...

Bozulan ekolojik dengeden etkilenen flora ve faunanın, günümüzde çevre tahribatının artmasına bağlı olarak bazı türlerin neslinin tükendiği, birçoğunun ise az ya da çok yok olma sürecinde olduğu görülmektedir. Ekosistem içerisinde etkilenen yaban hayatını oluşturan hayvan türlerinden olan kekliklerin sayılarında ciddi azalmalar meydana gelmiştir. B...

This study examined the effect of reusing litter on performance, viability and foot pad dermatitis (FPD) rates of three meat-type chicken genotypes with different growth rates and slaughter weights. Caking and manure accumulation of reused litter were also measured. A total of 780 chicks of 3 genotypes were raised in compartments (26 chickens per c...

ÖZET Bu çalışmada, üçlü melezleme ile üretilen M1 ve M2 genotiplerinin ticari hızlı gelişen F etlik piliçleri ile büyüme ve bazı kesim özellikleri bakımından karşılaştırılması yapılmıştır. Tüm genotiplerden 260'ar adet erkek-dişi karışık civciv aynı kümeste her genotip 10 tekerrürlü olarak büyütmeye alınmıştır. Ticari hızlı gelişen piliçlerde iki...

Bu çalışmada, ağır yumurtacı hatlar ile ticari etlik piliç ebeveynlerinin melezlenmesi ile üretilen genotiplerin ticari hızlı gelişen etlik piliçlerle performans yönünden karşılaştırılması amaçlanmıştır. Bu amaçla, Rhode Island Red (RIRII) ve Barred Plymouth Rock (BARII) genotiplerinin ROSS ticari ebeveynleri ile üçlü melezlemesi sonucunda iki geno...