Effect of Eggshells As Calcium Sources on The Growth Performance of Offspring Land Snails (Cornu Aspersum Müller, 1774)

Abstract

In this study, the effect of eggshell added to the diet as a calcium source on the growth performance of juvenile land snails (Cornu aspersum) was evaluated. In the study, 3 experimental diets were prepared using eggshells added to the diets in two different ways: with (ES) and without (MES) membrane with limestone (LMS). Experimental diets were prepared as isonitrogenous (~15%), isolipidic (~3%) and isocalcium (~13%). The experiment was conducted for 45 days and the growth rates of the snails were monitored by interim weighing at 15-day intervals. At the end of the experiment, the best growth, weight gain and SGR were determined in the group fed with membrane eggshell supplemented diet (P<0.05). FCR was better in the eggshell groups (ES and MES) than in the limestone supplemented group. No mortality occurred in any group during the study period. According to the results of the study, it is thought that eggshell can be added to the diet of juvenile land snails as a calcium source and recycling of waste eggshells will benefit the environment and economy.

Keywords

• offspring land snail
• eggshell
• calcium sources
• Cornu aspersum.

Kalsiyum Kaynağı Olarak Yumurta Kabuklarının Yavru Kara Salyangozunun (Cornu Aspersum Müller, 1774) Büyüme Performansı Üzerine Etkileri

Abstract

Bu çalışmada, kalsiyum kaynağı olarak yeme ilave edilen yumurta kabuğunun yavru kara salyangozların (Cornu aspersum) büyüme performansları üzerindeki etkisi değerlendirilmiştir. Araştırmada limestone (LMS) karşılık membranlı (ES) ve membransız (MES) olarak iki farklı şekilde yemlere ilave edilen yumurta kabukları kullanılarak 3 deneme yemi hazırlanmıştır. Deneme yemleri protein, lipid ve kalsiyum oranları eşit olacak şekilde hazırlanmıştır. Deneme 45 gün süre ile yürütülmüş ve 15 günlük peryodlar halinde ara tartımlar yapılarak salyangozların büyüme oranları takip edilmiştir. Deneme sonunda en iyi büyüme, ağırlık artışı ve SGR membranlı yumurta kabuğu ilave edilmiş yemle beslenen grupta belirlenmiştir (P<0.05). FCR’ın yumurta kabuğu gruplarında (ES ve MES) limestone ilaveli gruptan daha iyi olduğu tespit edilmiştir. Araştırma süresince bütün gruplarda herhangi bir ölüm olmamıştır. Araştırma sonuçlarından, yavru kara salyangozu diyetlerine kalsiyum kaynağı olarak yumurta kabuğu ilavesinin yapılabileceği gibi atık yumurta kabuklarının geri dönüştürülerek çevreye ve ekonomiye fayda sağlayacağı düşünülmektedir.

Keywords

• Yavru kara salyangozu
• yumurta kabuğu
• kalsiyum kaynakları
• Cornu aspersum

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