Abstract

<p class="1Body">To study whether the particle size of golden apple snail (<em>Pomacea Canaliculata</em>, Lamarck) shell induces negative effects on the growth performance, carcass quality, bone strength and small intestinal histology in Thai native chickens (Pradu Hang Dum Chiangmai 1), 192 chickens, both male and female, were divided into 4 groups with 4 replicates of 12 chickens each at 5 weeks of age. The control group received limestone as a source of calcium. The experimental groups received diets containing golden apple snail shell particles, with sizes ranging from 0:50 to 1:00, from 1.00 to 1.70, and from 1.70 to 2.80 mm as a calcium source. Feed intake and weight were measured weekly, and carcass quality, tibial bone strength and small intestinal histology were observed at 16 weeks of age. The data of growth performance, carcass quality, tibial bone strength and small intestinal histology did not present negative results after feeding any of the golden apple snail shell sizes. On the contrary, a slightly higher weight gain was observed in the group consuming the 1.00 to 1.70 mm snail shell particles during the period from the 13th to the 16th week. Improved carcass quality and pectoralis major and tibial bone strength, as well as significantly increased duodenal villus surface and jejunal crypt cell numbers (p < 0.05) were observed in the group fed the 1.00 to 1.70 mm snail shell particles. These results suggest that golden apple snail shell particles between 1.00 and 1.70 mm can improve growth performance due to hypertrophied intestinal function.</p>

Highlights

  • The golden apple snail (Pomacea canaliculata, Lamarck) was introduced from Argentina to South East Asian countries in 1980 (Naylor, 1996; Mochida, 1991) as a dietary protein supplement and source of income for the rural poor (Matienzo, 1984)

  • Improved carcass quality and pectoralis major and tibial bone strength, as well as significantly increased duodenal villus surface and jejunal crypt cell numbers (p < 0.05) were observed in the group fed the 1.00 to 1.70 mm snail shell particles. These results suggest that golden apple snail shell particles between 1.00 and 1.70 mm can improve growth performance due to hypertrophied intestinal function

  • The aim of the present study was to study the effects of the size of the particles of golden apple snail shell on the growth performance, carcass quality, tibial bone strength and small intestinal histology in Thai native chickens

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Summary

Introduction

The golden apple snail (Pomacea canaliculata, Lamarck) was introduced from Argentina to South East Asian countries in 1980 (Naylor, 1996; Mochida, 1991) as a dietary protein supplement and source of income for the rural poor (Matienzo, 1984). The golden apple snail was reported to be a useful alternative source of protein for tiger shrimp (Bombeo-Tuburan et al, 1995). In our previous studies, improved egg yolk color (Khotthong et al, 2014) and hypertrophied intestinal epithelial cells (Maneewan et al, 2015) were observed in hens fed dietary 1.00-1.70 mm particle-size golden apple snail shell. Thai native chickens (Pradu Hang Hum) are expensive, and the shells of the golden apple snail are thrown away without being effectively used, and are a contributor to environmental pollution. These facts suggest that the golden apple snail might be a useful alternative www.ccsenet.org/ijb

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