Effect of Using Dried Cocoa Pod Husk as an Ingredient in Laying Hen Feed on Egg Production and Quality
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Abstract
The objective of this research was to increase the value of cocoa pod husk (CPH) by using it as an
ingredient in laying hen feed. To prepare CPH as a raw material with other ingredients, CPH was dried using a hot air dryer with a constant hot air velocity of 3 L/min. The CPH drying was performed at 50, 60, and 70oC to
determine the optimal condition of CPH drying and to study a mathematical model of CPH drying. To examine
the effect of laying hen feeds mixed with CPH (CPH feeds) on egg production and quality, 3 formulae of CPH
feeds containing 2, 4, and 6% of CPH were used. The results showed that the optimal condition for CPH drying
was hot air drying at 50oC for 555 min, which was the lowest energy consumption condition with the specific
energy consumption of 5.25 MJ/kg water evaporated. The study of mathematical models for CPH drying showed that the Logarithmic model was the suitable equation for predicting the reduction of CPH moisture with the
highest decision coefficient (R2) and the lowest root mean square error (RMSE) and sum of square error (SSE). The R2 value was greater than 0.9996 and the RMSE and SSE values were 0.00434 and 0.00345, respectively. The study of the effect of CPH feeds on egg production and quality showed that laying hens fed with the CPH feeds had higher egg production, egg weight, egg mass, feed conversion ratio, Haugh unit values than those fed with the commercial feed. However, their feed intakes were not different.
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บทความที่ได้รับการตีพิมพ์เป็นลิขสิทธิ์ของ วารสารวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยอุบลราชธานี
ข้อความที่ปรากฏในบทความแต่ละเรื่องในวารสารวิชาการเล่มนี้เป็นความคิดเห็นส่วนตัวของผู้เขียนแต่ละท่านไม่เกี่ยวข้องกับมหาวิทยาลัยอุบลราชธานี และคณาจารย์ท่านอื่นๆในมหาวิทยาลัยฯ แต่อย่างใด ความรับผิดชอบองค์ประกอบทั้งหมดของบทความแต่ละเรื่องเป็นของผู้เขียนแต่ละท่าน หากมีความผิดพลาดใดๆ ผู้เขียนแต่ละท่านจะรับผิดชอบบทความของตนเองแต่ผู้เดียว
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