The Effects of Dietary Supplementation of Hemp Sugar Leaf (Cannabis sativa) on Growth Performance, Feed Utilization, Organosomatic Indices, and Carcass Quality in Nile tilapia (Oreochromis niloticus)
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Abstract
Hemp sugar leaf is a by-product that farmers have trimmed from the flower before selling. Nevertheless, these trimmed hemp sugar leaf contain significant nutritional value. The current study aims to explore the impact of dietary supplementation with hemp sugar leaf meal on the growth performance of Nile tilapia, thereby utilizing this by-product effectively. Four experimental diets were prepared using dried powdered hemp sugar leaf meal at varying levels of 0, 10, 20, and 40 g/kg. Feeding trail was given ad libitum twice daily and lasted 10 weeks. Tilapia initial body weight of 6.67 ± 0.03 g/fish was randomly distributed to 15 plastic tanks. The results of the present study showed that dietary supplementation of hemp sugar leaf of all levels did not exert any significant impact on growth performance including final weight, weight gain, average daily gain, specific growth rate, condition factor, hepatosomatic index, viscerosomatic index, rate of feed intake, feed conversion ratio, feed efficiency compare with a control diet (P>.05). The survival rate of fish fed dietary supplementation of hemp sugar leaf at 20 g/kg showed the highest level of 95.00±6.38 percent, but there is not significantly (P>.05) to the other groups. The whole-body composition of tilapia fed the experimental diets revealed that there was not statistical difference in crude protein (P>.05), but crude fat content decreased from supplementation at 20 g/kg level significantly (P<.05). Moisture and ash content increased significantly (P<.05). Results of the present study showed that dietary supplementation of hemp sugar leaf meal at 10, 20 and 40 g/kg did not affect growth performance, feed utilization, organosomatic indexes, and survival in tilapia.
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บทความในวารสารเกษตรนเรศวรที่ได้รับการตีพิมพ์ เป็นลิขสิทธิ์ของ คณะเกษตรศาสตร์
ข้อความที่ปรากฏในบทความแต่ละเรื่องในวารสารนี้เป็นความคิดเห็นส่วนตัวของผู้เขียนแต่ละท่านไม่เกี่ยวข้องกับคณะเกษตรศาสตต์ฯ
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