Levrek (D. labrax, L. 1758) larvalarında erken dönem girilen mikropartikül yemlerin gelişme ve sindirim enzimleri aktivitelerine olan etkisi
Küçük Resim Yok
Tarih
2005
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Ege Üniversitesi
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
ÖZET LEVREK {Dicentrarchus labrax, L. 1758) LARVALARINDA ERKEN DÖNEM GİRİLEN MİKROPARTİKÜL YEMLERİN GELİŞME VE SİNDİRİM ENZİMLERİ AKTİVİTELERİNE OLAN ETKİSİ KARACAOĞLAN, Arif Yüksek Lisans Tezi, Tez Yöneticisi: Doç. Dr. Kürşat FIRAT Ağustos 2005, 63 sayfa Bu çalışmada; levrek {Dicentrarchus labrax) balığının larva döneminde mikropartikül yemler kullanılmasının, larvaların yaşama ve büyüme oranlan ile sindirim enzimleri aktivitesi üzerine olan etkileri incelenmiştir. Larval yetiştiricilik kapalı devre sistem kullanılarak gerçekleştirilmiştir. 15, 20 ve 25. gün olmak üzere 3 farklı dönemde mikropartikül yeme geçiş yapılmıştır. Deneme sonunda, larvalara ait total boy ve ağırlık gelişimleri incelendiğinde; en iyi total boy 22.12±3.6 mm, ağırlık 48.78±5.3 mg olarak C grubundan elde edilmiştir. Bu grubun ardından 20.86±2.1 mm ve 45.56±3.7 mg değeri ile B grubu, 20.76±4.3 mm, 44.34±3.6 mg değeri ile K ve 18.45±1.9 mm, 34.21±4.1 mg değeri ile A grubu gelmiştir. Kontrol grupları ile deneme grupları arasındaki fark önemsizken (p>0.05) A grubu diğer gruplar ile arasında önemli farklılıklar bulunmuştur (p<0.05). Yaşama oranlan ise gruplara göre sırasıyla %18.2, %37.5, %41.4 ve %44.3olarak saptanmıştır. Benzer şekilde, B, C ve K grupları arasındaki fark istatistiki olarak önemsizken (p>0.05) A grubunun diğer 3 gruba göre farkı önemli bulunmuştur (p<0.05). Tripsin aktivitesi larval gelişime bağlı olarak artış göstermiştir. En yüksek tripsin spesifik aktivitesi kontrol grubunda bulunmuş, bunu deneme grupları izlemiştir. Deneme grupları arasındaki fark istatistiki olarak önemsiz bulunurken (p>0.05) bu grupların kontrol grubu ile arasındaki farklılık önemli bulunmuştur (p<0.05). Pepsin aktivitesi ilk olarak mide oluşumu ile birlikte 25. günde tespit edilmiştir. Mikropartikül yem kullanılan deneme gruplarında pepsin aktivitesi yüksek bulunurken kontrol grubunda düşük seyretmiştir. Deneme grupları ile kontrol grubu arasındaki fark önemli bulunmuştur (p<0.05). Amilaz enzim aktivitesi, çalımla süresince deneme gruplarında kullanılan mikropartikül yem içeriğindeki nişasta varlığından dolayı yükselmiş, deneme grupları ile kontrol grubu arasındaki fark önemli bulunmuştur (p<0.05). Anahtar Sözcükler: Levrek, Dicentrarchus labrax, mikropartikül yem, larval gelişim, erken sövraj, sindirim enzimleri
vn ABSTRACT THE EFFECTS OF EARLY WEANING ON GROWTH AND DIGESTIVE ENZYMES ACTIVITIES OF SEA BASS (Dicentrarchus labrax, L. 1758) LARVAE KARACAO?LAN, Arif MSc in in Faculty of Fisheries, Aquaculture Department Supervisor: Assoc. Prof. Dr. Kürşat FIRAT August 2005, 63 pages In this study; it was investigated that the effects of early weaning with microparticulate feeds on survival, growth and digestive enzymes activities of sea bass larvae. The larval rearing was performed by using closed system. Sea bass larvae were weaned with a microparticulated diet at various times after hatching: 15, 20 and 25 days; a control group was fed live prey Artemia nauplii. At the end of the experiment, the best result was obtained from the group C as 22.12±3.6 mm total length and 48.78±5.3 mg weight. It was found that these rates were calculated as 20.86±2.1 mm and 45.56±3.7 mg for group B, 20.76±4.3 mm and 44.34±3.6 mg for the control group and 18.45Ü.9 mm and 34.21±4.1 mg for A group respectively. Although there were significant differences between other groups and group A, no differences were found between experimental groups and control group. Survival rates were calculated as 18.2%, 37.5%, 41.4% and44.3% for all groups respectively. Similarly, there were no differences between B, C and control group (p>0.05), significant differences were found between group A and other experimental groups (p<0.05). Trypsin specific activity was increased depend on larval development. The highest specific activity was found in control group and followed by other experimental groups. While no differences were found between experimental groups (p>0.05), control group was found significantly different than the other groups (p<0.05). Pepsin was firstly detected on day 25 related with stomach formation. Pepsin specific activity was increased in microparticulate fed experimental groups and lower activities were found in control group. Significant differences were found between experimental groups and control group (p<0.05). Amylase specific activity was increased due to starch existence in microparticulate food and ignificant differences were found between experimental groups and control group (p<0.05). Keywords: Sea bass, Dicentrarchus labrax, microparticulate food, larval development, early weaning, digestive enzymes.
vn ABSTRACT THE EFFECTS OF EARLY WEANING ON GROWTH AND DIGESTIVE ENZYMES ACTIVITIES OF SEA BASS (Dicentrarchus labrax, L. 1758) LARVAE KARACAO?LAN, Arif MSc in in Faculty of Fisheries, Aquaculture Department Supervisor: Assoc. Prof. Dr. Kürşat FIRAT August 2005, 63 pages In this study; it was investigated that the effects of early weaning with microparticulate feeds on survival, growth and digestive enzymes activities of sea bass larvae. The larval rearing was performed by using closed system. Sea bass larvae were weaned with a microparticulated diet at various times after hatching: 15, 20 and 25 days; a control group was fed live prey Artemia nauplii. At the end of the experiment, the best result was obtained from the group C as 22.12±3.6 mm total length and 48.78±5.3 mg weight. It was found that these rates were calculated as 20.86±2.1 mm and 45.56±3.7 mg for group B, 20.76±4.3 mm and 44.34±3.6 mg for the control group and 18.45Ü.9 mm and 34.21±4.1 mg for A group respectively. Although there were significant differences between other groups and group A, no differences were found between experimental groups and control group. Survival rates were calculated as 18.2%, 37.5%, 41.4% and44.3% for all groups respectively. Similarly, there were no differences between B, C and control group (p>0.05), significant differences were found between group A and other experimental groups (p<0.05). Trypsin specific activity was increased depend on larval development. The highest specific activity was found in control group and followed by other experimental groups. While no differences were found between experimental groups (p>0.05), control group was found significantly different than the other groups (p<0.05). Pepsin was firstly detected on day 25 related with stomach formation. Pepsin specific activity was increased in microparticulate fed experimental groups and lower activities were found in control group. Significant differences were found between experimental groups and control group (p<0.05). Amylase specific activity was increased due to starch existence in microparticulate food and ignificant differences were found between experimental groups and control group (p<0.05). Keywords: Sea bass, Dicentrarchus labrax, microparticulate food, larval development, early weaning, digestive enzymes.
Açıklama
Bu tezin, veri tabanı üzerinden yayınlanma izni bulunmamaktadır. Yayınlanma izni olmayan tezlerin basılı kopyalarına Üniversite kütüphaneniz aracılığıyla (TÜBESS üzerinden) erişebilirsiniz.
Anahtar Kelimeler
Su Ürünleri, Aquatic Products
