Kim, Nam-Jung
(Department of Agricultural Biology, National Institute of Agricultural Science & Technology)
,
Hong, Seong-Jin
(Department of Agricultural Biology, National Institute of Agricultural Science & Technology)
,
Seol, Kwang-Youl
(Department of Agricultural Biology, National Institute of Agricultural Science & Technology)
,
Kim, Seong-Hyun
(Department of Agricultural Biology, National Institute of Agricultural Science & Technology)
,
Ahn, Nan-Hee
(Department of Agricultural Biology, National Institute of Agricultural Science & Technology)
,
Park, Hae-Chul
(Department of Agricultural Biology, National Institute of Agricultural Science & Technology)
,
Lee, Young-Bo
(Department of Agricultural Biology, National Institute of Agricultural Science & Technology)
,
Kim, Mi-Ae
(Department of Agricultural Biology, National Institute of Agricultural Science & Technology)
Nymph of the emma field cricket, Teleogryllus emma, were reared on several types of artificial diets. The development period of nymphs were 55.4 days when only a single food, wheat bran, was provided, and it did not show a significant difference compared to the rearing results of the Danong diet and...
Nymph of the emma field cricket, Teleogryllus emma, were reared on several types of artificial diets. The development period of nymphs were 55.4 days when only a single food, wheat bran, was provided, and it did not show a significant difference compared to the rearing results of the Danong diet and mixed diet. The supplying period of fish meal as the animal feed, the high emergence rates were obtained at 3rd instar with 90% and 4th instar with 100%. For the added amount test, when more than 40% of the diet was added, it confirmed that the insect weight increased. The characteristics of development according to each added amount of the vegetable food (dry bean-curd residue and corn powder) were investigated to minimize the dangers of the degeneration of diet when rearing with a single feed during the $1st{\sim}3rd$ instar period. First, as the added amount of bean-curd residue increased, nymphal development period became longer and the emergence rate became low. With corn powder as the single diet, all died before becoming adult. However, when corn powder was added up to 30%, no difference existed in the breeding results.
Nymph of the emma field cricket, Teleogryllus emma, were reared on several types of artificial diets. The development period of nymphs were 55.4 days when only a single food, wheat bran, was provided, and it did not show a significant difference compared to the rearing results of the Danong diet and mixed diet. The supplying period of fish meal as the animal feed, the high emergence rates were obtained at 3rd instar with 90% and 4th instar with 100%. For the added amount test, when more than 40% of the diet was added, it confirmed that the insect weight increased. The characteristics of development according to each added amount of the vegetable food (dry bean-curd residue and corn powder) were investigated to minimize the dangers of the degeneration of diet when rearing with a single feed during the $1st{\sim}3rd$ instar period. First, as the added amount of bean-curd residue increased, nymphal development period became longer and the emergence rate became low. With corn powder as the single diet, all died before becoming adult. However, when corn powder was added up to 30%, no difference existed in the breeding results.
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제안 방법
5 cm height). For each diet, ten insects were tested once, and this process was carried out three times.
Each test was carried out by supplying dry bean-curd residue and corn powder as substitutions for wheat bran, which was provided as feed during the 1st through 3rd instar period. The test involved adding 10, 20, 30, 40, and 50% dry bean-curd residue and corn powder to the diet, while controls received only the substitute diet. The test insects, rearing conditions, and experimental methods were the same as those used in the development of the artificial diet.
Artificial diets are useful for mass rearing. Therefore, this paper carried out experiments with the purpose of developing artificial diet in order to improve the productivity utilizing cheap diet supply when rearing Teleogryllus emma for the purpose of establishment of the successive rearing method of the crickets in a room condition.
데이터처리
Differences in developmental period and adult weight were tested by analysis of variance (ANOVA). If significant differences were detected, multiple comparisons were made using Tukey’s HSD multiple range test (P= 0.
Differences in developmental period and adult weight were tested by analysis of variance (ANOVA). If significant differences were detected, multiple comparisons were made using Tukey’s HSD multiple range test (P= 0.05).
Nymphs were reared under a photoperiod of 16L : 8D at 28℃. Means in columns followed by the same letter are not significantly different by Tukey’s HSD multiple range test (P = 0.05).
성능/효과
The nymph development period did not have a significant difference when adding animal food to each instar from 1st instar to 7th instar, but when adding animal food at 8th instar a tendency in which the growing period prolongs showed. All emergence rates were over 60%, and high results were obtained especially at 3rd instar with 90% and 4th instar with 100%.
Considering the results above, when rearing T. emma in mass rearing, it is judged that providing wheat bran during the 1st ~ 3rd instar and providing 40% animal food during the 4th ~ 9th instar are appropriate diets for the nymph development in terms of improving productivity by supplying cheap diet that satisfies nutritional requirements.
The results of rear testing on the added amount confirmed that the nymph development period and the emergence rate showed only a slight difference according to the added amount of the fish meal. Yet, for the weight of the adults, when more than 40% of the diet was added, it confirmed that the insect weight increased (Table 2).
There was a marked difference in the nymphal survivorship reared on the 4 diets: In the case of the wheat bran and mixed diet, it was 95.6% and 92.2%, which was much more satisfactory by far than with Danong diet (71.3%) and animal food (48.9%). The development period of nymphs were 55.
참고문헌 (9)
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