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Quantitative analysis of hypertrophy and hyperactivity in tissue of the androgenic gland of eyestalk-ablated male Pacific white shrimp Litopenaeus vannamei was made during the molt cycle by measuring the area of androgenic gland cells located in the subterminal region of the terminal ampoule and measuring the expression of the insulin-like androgenic gland hormone precursor gene (Lv-IAG) in the distal...
A total of 6000 shrimp (initial body weight of 0.82±0.02g) were randomly distributed into twelve concrete pools (4.5m×3.5m×0.5m) with 500 shrimp per pool and 3 pools per diet, respectively. Four kinds of isonitrogen and isoenergetic diets were formulated with 0, 0.1%, 0.2% and 0.3% Yucca schidigera extract (YSE), respectively. The experiment lasted 100d. The results showed as follows: when supplemented...
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