規則性絕食對蝦類影響之研究—Ⅱ規則性絕食對草蝦攝餌量及其成長之影響

The Effect of Periodic Starvation on Prawns-Ⅱ Periodic Starvation Related to Feeding Amount and Growth of Grass Prawn, Penaeus monodon Fabricius

李正森(Cheng-Sheng Lee) ； 梁順榮(Shuen-Rong Liang) ； 廖一久(I-Chiu Liao)

《臺灣水產學會刊》 3卷2期 (1974/12) Pp. 93-110

https://doi.org/10.29822/JFST.197412.0011

摘要

本實驗係以規則性絕食，卽以長短不同日數之絕食條件下飼育草蝦，其方法計分為：每日投餌、3日投餌1日絕食、2日投餌1日絕食、1日投餌1日絕食、1日投餌2日絕食及1日投餌3日絕食等六種處理。目的在求出一種既能節省餌料、人力又能提高成長率之極富經濟意義的投餌方法，獲得結果如下：
1．累積攝餌量隨絕食日數的增加而遞減，至於平均一日攝餌率，絕食日數在3天以內者，均隨絕食日數的增加而增加。
2．每日投餌者其脫殼與攝餌量之間有明顯之關係。在脫殼前、後其攝餌量，作先減後增的變化，脫殼當日不攝餌。但，施以規則性絕食處理者，如1日投餌2日絕食之組，若投餌適在脫殼當日，則亦能攝餌。又，絕食使得脫殼間隔增長，並影響脫殼時之增重率。
3．綜觀本實驗結果，草蝦在不同之成長階段，似有其各自較為適當之投餌方法，旣可節省人力、餌料，又能提高成長率。如平均體重0.51及1.38 g左右者，以每日投餌為最好；平均體重在5.33 g左右者，則以2日投餌1日絕食為最好；平均體重9.03 g左右者，以1日投餌1日絕食為最好；至於平均體重18.25 g左右者，則以3日投餌1日絕食為最好。換言之，即體型較小者，絕食時間宜短，較大者，絕食時間可較長，但更大者，則又可能要縮短絕食時間。

並列摘要

The effect of periodic starvation on red prawn has been studied and reported. Similar feeding experiments on the grass Prawn, Penaeus monodon Fabricius, were done this time. In order to find out the most efficient feeding method for P. monodon, six feeding methods of periodic starvation were tested, i .e., feeding every day, feeding for three days fo11owedby one day starvation, feeding for two days followed by one day starvation, feeding every other day, feeding every three days and feeding every four days.
It was found that daily feeding was not the most efficient method. There seemed to be a most effective feeding pattern for each growth stage of the grass prawn. Food and labor could be saved with this pattern. The suitable feeding patterns obtained are:
1) for prawns with average body weights of 0.51 and 1.38 g, feeding daily.
2) for prawns with average body weight of 5.33 g, feeding for two days followed by one day starvation.
3) for prawns with average body weight of 9.03 g, feeding every other day.
4) for prawns with average body weight of 18.25 g, feeding for three days followed by one day starvation.
As for the mechanisms of the mentioned results, further studies are in progress.