在刚刚结束的U．S．News ＆ World Report对最佳饮食的评选中，DASH饮食又一次进入榜首，已连续9年被评为最佳综合饮食方式。与DASH饮食并列第一的还有历史悠久的地中海饮食模式，下面就带大家了解一下，最好的方式之一的DASH饮食是什...在刚刚结束的U．S．News ＆ World Report对最佳饮食的评选中，DASH饮食又一次进入榜首，已连续9年被评为最佳综合饮食方式。与DASH饮食并列第一的还有历史悠久的地中海饮食模式，下面就带大家了解一下，最好的方式之一的DASH饮食是什么样的。展开更多
据英国（BBC新闻》（BBCNEWS）2016—07—14报道，科学家证明，DNA除了会遗传外貌特征、性别及疾病之外，肥胖风险、脂肪摄取及新陈代谢也都与DNA有关，而这些就叫营养遗传学，也就是食物中的营养和遗传基因之间的相互关系。美国德州A＆...据英国（BBC新闻》（BBCNEWS）2016—07—14报道，科学家证明，DNA除了会遗传外貌特征、性别及疾病之外，肥胖风险、脂肪摄取及新陈代谢也都与DNA有关，而这些就叫营养遗传学，也就是食物中的营养和遗传基因之间的相互关系。美国德州A＆M大学巴林顿博士（ William Barrington）在美国马里兰州的遗传学会议中说：“一些定义某些食物具有哪些健康好处或风险的观点是以偏概全。我们的研究表明，食物对人类的影响因人而异，也就是不同的人有不同的最佳饮食组合。”展开更多
The optimal quantity of dietary lysine (Lys) and arginine (Arg), and the optimal ratio of dietary Lys to Arg for Pacific white shrimp Litopenaeus vannamei were investigated. Coated Lys and Arg were added to a basal di...The optimal quantity of dietary lysine (Lys) and arginine (Arg), and the optimal ratio of dietary Lys to Arg for Pacific white shrimp Litopenaeus vannamei were investigated. Coated Lys and Arg were added to a basal diet (37.99% crude protein and 7.28% crude lipid) to provide graded levels of Lys and Arg. The experimental diets contained three Lys levels (2.51%, 2.11%, and 1.70% of total diet), and three Arg levels (1.41%, 1.80%, and 2.21% of total diet) and all combinations of these levels were tested. Pacific white shrimp, with a mean weight of 3.62±0.1 g, were randomly distributed in 36 fiberglass tanks with 30 shrimp per tank and reared on the experimental diets for 50 days. After the feeding trial, the growth performance, survival, feed conversion rate (FCR), body composition and protease and lipase activities in the hepatopancreases of the experimental shrimps were determined. The results show that weight gain (WG), specific growth rate (SGR), FCR, body protein, body Lys and Arg content were significantly affected by dietary Lys and Arg (P<0.05) and improved when dietary Lys and Arg levels were 2.11% 2.51% and 1.80% 2.21%, respectively. Protease and lipase activities in the hepatopancreases of the shrimps appeared higher when dietary Lys and Arg quantities were 2.11% 2.51% and 1.80% 2.21%, although the difference was not statistically significant (P>0.05). Therefore, according to our results, the optimal Lys and Arg quantities in the diet of Pacific white shrimp, L. vannamei, were considered to be 2.11%-2.51% and 1.80%- 2.21%, respectively, and the optimal ratio to be 1:0.88-1:1.05.展开更多
文摘据英国（BBC新闻》（BBCNEWS）2016—07—14报道，科学家证明，DNA除了会遗传外貌特征、性别及疾病之外，肥胖风险、脂肪摄取及新陈代谢也都与DNA有关，而这些就叫营养遗传学，也就是食物中的营养和遗传基因之间的相互关系。美国德州A＆M大学巴林顿博士（ William Barrington）在美国马里兰州的遗传学会议中说：“一些定义某些食物具有哪些健康好处或风险的观点是以偏概全。我们的研究表明，食物对人类的影响因人而异，也就是不同的人有不同的最佳饮食组合。”
基金Supported by the Research Foundation for Advanced Talents, Qingdao Agricultural University (No.631109)
文摘The optimal quantity of dietary lysine (Lys) and arginine (Arg), and the optimal ratio of dietary Lys to Arg for Pacific white shrimp Litopenaeus vannamei were investigated. Coated Lys and Arg were added to a basal diet (37.99% crude protein and 7.28% crude lipid) to provide graded levels of Lys and Arg. The experimental diets contained three Lys levels (2.51%, 2.11%, and 1.70% of total diet), and three Arg levels (1.41%, 1.80%, and 2.21% of total diet) and all combinations of these levels were tested. Pacific white shrimp, with a mean weight of 3.62±0.1 g, were randomly distributed in 36 fiberglass tanks with 30 shrimp per tank and reared on the experimental diets for 50 days. After the feeding trial, the growth performance, survival, feed conversion rate (FCR), body composition and protease and lipase activities in the hepatopancreases of the experimental shrimps were determined. The results show that weight gain (WG), specific growth rate (SGR), FCR, body protein, body Lys and Arg content were significantly affected by dietary Lys and Arg (P<0.05) and improved when dietary Lys and Arg levels were 2.11% 2.51% and 1.80% 2.21%, respectively. Protease and lipase activities in the hepatopancreases of the shrimps appeared higher when dietary Lys and Arg quantities were 2.11% 2.51% and 1.80% 2.21%, although the difference was not statistically significant (P>0.05). Therefore, according to our results, the optimal Lys and Arg quantities in the diet of Pacific white shrimp, L. vannamei, were considered to be 2.11%-2.51% and 1.80%- 2.21%, respectively, and the optimal ratio to be 1:0.88-1:1.05.
