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- Title
Effects of protein levels on production performance, nutritional values, and phase feeding of two-spotted cricket.
- Authors
Kaewtapee, Chanwit; Triwai, Punsak; Inson, Chama; Masmeatathip, Roungthip; Sriwongras, Piyapong
- Abstract
Two experiments were conducted to determine the effects of different protein levels on the growth performance, feed efficiency and nutritional values, and phase feeding of the 2-spotted cricket (Gryllus bimaculatus de Geer). In experiment 1, 4 crude protein (CP) diets were formulated to contain 18%, 20%, 22%, or 24% CP, respectively. A sample of 7-day-old 3,600 crickets was equally divided into 24 plastic boxes (150 crickets each) in a completely randomized design with 4 diets and 6 replications. In experiment 2, 2-phase feedings were used. For starting period (days 7–18), crickets in all treatments were fed a diet containing 22% CP. During the growing period (days 19–35), 3 groups of crickets were fed diets containing 18%, 20%, and 22% CP. In the overall period of experiment 1, the crickets fed with 22% CP diet had greater body weight compared to those fed with 18% CP diet. In addition, the crickets fed with 22% CP diet had the lowest feed conversion ratio (FCR). The broken-line model indicated the growth pattern changed on day 18. In experiment 2, the crickets fed with 20% CP diet from days 19 to 35 had greater growth performance and lower FCR than those fed with 18% CP, but not different from those fed with 22% CP. In conclusion, 22% CP can increase growth performance by improving the feed efficiency of crickets. The implementation of 2-phase feedings using 20% CP, during the growing period, could be considered as a cost-effective strategy for sustainable cricket production.
- Subjects
NUTRITIONAL value; NUTRITIONAL value of feeds; GRYLLUS bimaculatus; SUSTAINABILITY
- Publication
Journal of Insect Science, 2024, Vol 24, Issue 2, p1
- ISSN
1536-2442
- Publication type
Article
- DOI
10.1093/jisesa/ieae039