Amaç: Bu çalışmada, kanatlı kırmızı akarı (Dermanyssus gallinae) ile deneysel olarak enfeste edilmiş yumurtacı tavuklarda akar enfestasyonunun ve depolamanın yumurta kalite özellikleriüzerine etkileri araştırılmıştır.Materyal ve Yöntem: Çalışmada 60 haftalık yaşta 48 Atabey yumurtacı tavuk kullanılmıştır. Tavuklar, deneme odalarından birisi kanatlı kırmızı akar ile enfeste edilmiş ancak yetiştirme koşulları eşit olan iki odada bulunan kafeslere bireysel olarak yerleştirilmiştir. Her iki gruptan denemenin 30-35. günleri arasında toplanan yumurtaların yarısı taze olarak analiz edilmiş, diğer yarısı ise +4 °C’de 30 gün depolandıktan sonra analiz edilmişlerdir. Yumurta kalitesi olarak yumurta ağırlığı, şekil indeksi, kabuk kalınlığı, ak indeksi, sarı indeksi, sarı rengi ve Haugh birimi incelenmiştir.Bulgular: Denemenin 20. gününde akar sayısı 1.227.341 iken denemenin 35. gününde bu sayı 2.216.787 olarak tahmin edilmiştir. Yumurta verimi, yumurta ağırlığı ve kütlesi enfeste grupta istatistiksel olarak daha düşük gerçekleşmiştir (P<0.05). Parazitin kabuk oranına etkisi istatistiksel olarak önemli ve olumsuzdur (P<0.0001). Depolamanın etkisiyle yumurta akı ve sarıkalitesinde düşüş meydana gelmiştir (P≤0.0026).Sonuç: Akar enfestasyonunun yumurta verimi, yumurta ağırlığı ve yumurta kabuğu kalitesini olumsuz etkilediği saptanmıştır. Dermanyssus gallinae’nin konak üzerindeki birincil etkisinin kan üzerinde olduğu düşünüldüğünde, yoğun enfestasyon koşullarında anemi nedeniyle üreme organlarının yeterince desteklenememesi ve bundan dolayı da tavuklarda yumurta oluşum sürecinin olumsuz etkilenmiş olabileceği düşünülmektedir. Söz konusu durumun yumurta oluşum fizyolojisi ve etkili faktörler bakımından detaylı araştırılması gerekmektedir.
Poultry red mite (PRM) is most important ectoparasite of poultry due to its harmful effects. This study aims to determine the prevalence of PRM in small free range farms and backyards of poultry breeding and to reveal the correlation between the condition and location of hen-houses with the prevalence of PRM. Analyses were carried out between on August 25th -September 30th in a total of 10 districts and 124 villages in Çanakkale, Turkey. The districts and villages visited in the region were divided into 5 different locations based on their geographical structure and analyses were performed for these locations. In total, 355 coops were surveyed, and the presence of red mite and the conditions of poultry houses were recorded. It was found out that the infestation rate of red mite was 72.39% in the province of Çanakkale. According to location prevalence, the highest infestation rate was detected in Location 3 (81.25%) which is situated in the higher parts of the region. The study observed that the presence of perch, location, air conditioning, height and roof materials of the coops significantly affected the infestation rate (P < 0.05). The probability of incidence of mites was higher in the hen-houses higher than 0.60m and with better ventilation and perches. The lowest infestation rate was found in the coops with a galvanized roof, compared to those with the roofs made from tiles, woods or asbestos (P < 0.05). In conclusion, the findings highlighted that geographical and coop conditions should be considered as a point of control for red mites.
This study was undertaken to investigate the effect of beak length on feed intake with regard to animal welfare. The study involved two treatments groups; short beak pigeons (G-SB; n = 7) and normal beak pigeons (G-NB; n = 7) and was carried out in two consecutive trials. Daily feed consumption, meal length and behavioural traits such as aggressive pecking, preening, resting and locomotor activity were recorded under different feeding conditions. In Trial I the birds had free access to food material during a single feeding period each day, whereas in Trial II feeding was terminated when a pigeon from any of the groups that stopped eating first, moved towards water. It took a longer time for the pigeons in the G-SB group to consume the same amount of feed. Furthermore, the pigeons in G-SB were affected significantly in Trial II and lost bodyweight more compared to G-NB. Although no significant difference between the groups on frequency of aggressive pecking during feeding was found in Trial I, restricted feeding significantly increased the frequency of aggressive pecking in the G-SB group in Trial II. The results of the present study suggest that short beak, which is a side-effect of artificial selection for aesthetic purposes, can cause serious welfare problems under restricted environmental conditions.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.