为比较外来种红耳龟Trachemys scripta elegans与本地种中华条颈龟Mauremys sinensis耐饥饿能力强弱,分别于2009年8月～2010年4月和2010年7～8月对外来种红耳龟和本地种中华条颈龟进行耐饥饿能力的长期(8个月)和短期(2个月)实验的比较...为比较外来种红耳龟Trachemys scripta elegans与本地种中华条颈龟Mauremys sinensis耐饥饿能力强弱,分别于2009年8月～2010年4月和2010年7～8月对外来种红耳龟和本地种中华条颈龟进行耐饥饿能力的长期(8个月)和短期(2个月)实验的比较研究。长期实验控制食物因子,短期实验控制饥饿时间。长期实验结果表明,中华条颈龟食物缺乏组体重特定增长率极显著低于食物充分组(P<0.01),而红耳龟体重特定增长率在两试验组之间无显著差异(P>0.05);在食物转化率方面,红耳龟食物缺乏组高于食物充分组,而中华条颈龟却相反。短期实验结果表明,中华条颈龟饥饿组体重特定增长率显著低于对照组(正常饲喂组)(P<0.05),而红耳龟饥饿组体重特定增长率与食物对照组无显著差异(P>0.05);中华条颈龟饥饿组肝重极显著小于对照组(P<0.01),红耳龟肝重两组之间差异不显著(P>0.05)。综上表明红耳龟耐饥饿能力强于中华条颈龟。展开更多
This study was carried out to study the effect of adding different levels of date palm seed （Phoentix dactyliJProus） powder in the diet of common carp （Cyprinus carpio） at fish laboratory of Animal Production Depa...This study was carried out to study the effect of adding different levels of date palm seed （Phoentix dactyliJProus） powder in the diet of common carp （Cyprinus carpio） at fish laboratory of Animal Production Department, College of Agricultural Sciences, Sulaimani University, Sulaimani, Iraq. The actual experimental feeding trials were conducted for 70 d and the adaptation period for 21 d. A total of 81 common carp fingerlings weighted 62 ± 2 g were divided into three experimental groups. The control treatment T1 was with 0 g date palm seed, T2 with 2.5 g date palm seed per kg diet and T3 with 5 g date palm seed per kg diet. Each treatment was in three replicates in which three common carp fingerlings were stocked in each aquarium which fed the experimental diets twice daily. The results indicated that weight gain （WG） and specific growth rate （SGR） in the third treatment （T3） group were significantly higher than those of fish fed control diets. T2 consumed more diet than other treatments with 306.940 g with higher feed conversion ratio （FCR）; T3 was higher significantly in food efficiency. No significant （P 〈 0.05） differences obtained from consumed protein while the protein efficiency ratio was significantly higher in T3 with 319.323. Control was higher significantly in flesh weight without viscera with the third treatment; in flesh weight without head and viscera each the control and the second treatment was significantly higher than the third treatment. As a conclusion, the date palm seeds powder have a positive effect on growth performance of common carp.展开更多
文摘为比较外来种红耳龟Trachemys scripta elegans与本地种中华条颈龟Mauremys sinensis耐饥饿能力强弱,分别于2009年8月～2010年4月和2010年7～8月对外来种红耳龟和本地种中华条颈龟进行耐饥饿能力的长期(8个月)和短期(2个月)实验的比较研究。长期实验控制食物因子,短期实验控制饥饿时间。长期实验结果表明,中华条颈龟食物缺乏组体重特定增长率极显著低于食物充分组(P<0.01),而红耳龟体重特定增长率在两试验组之间无显著差异(P>0.05);在食物转化率方面,红耳龟食物缺乏组高于食物充分组,而中华条颈龟却相反。短期实验结果表明,中华条颈龟饥饿组体重特定增长率显著低于对照组(正常饲喂组)(P<0.05),而红耳龟饥饿组体重特定增长率与食物对照组无显著差异(P>0.05);中华条颈龟饥饿组肝重极显著小于对照组(P<0.01),红耳龟肝重两组之间差异不显著(P>0.05)。综上表明红耳龟耐饥饿能力强于中华条颈龟。
文摘This study was carried out to study the effect of adding different levels of date palm seed （Phoentix dactyliJProus） powder in the diet of common carp （Cyprinus carpio） at fish laboratory of Animal Production Department, College of Agricultural Sciences, Sulaimani University, Sulaimani, Iraq. The actual experimental feeding trials were conducted for 70 d and the adaptation period for 21 d. A total of 81 common carp fingerlings weighted 62 ± 2 g were divided into three experimental groups. The control treatment T1 was with 0 g date palm seed, T2 with 2.5 g date palm seed per kg diet and T3 with 5 g date palm seed per kg diet. Each treatment was in three replicates in which three common carp fingerlings were stocked in each aquarium which fed the experimental diets twice daily. The results indicated that weight gain （WG） and specific growth rate （SGR） in the third treatment （T3） group were significantly higher than those of fish fed control diets. T2 consumed more diet than other treatments with 306.940 g with higher feed conversion ratio （FCR）; T3 was higher significantly in food efficiency. No significant （P 〈 0.05） differences obtained from consumed protein while the protein efficiency ratio was significantly higher in T3 with 319.323. Control was higher significantly in flesh weight without viscera with the third treatment; in flesh weight without head and viscera each the control and the second treatment was significantly higher than the third treatment. As a conclusion, the date palm seeds powder have a positive effect on growth performance of common carp.
