Chen Xingyong, He Kaiqin, Wei Congcong, Yang Wanli, Geng Zhaoyu
College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China.
Anhui Province Key Laboratory of Local Livestock and Poultry Genetic Resource Conservation and Bio-breeding, Anhui Agricultural University, No. 130 Changjiang West Road, Hefei, 230036, China.
Animals (Basel). 2020 Feb 25;10(3):370. doi: 10.3390/ani10030370.
Whether or not green tea promotes egg production is unclear. Huainan partridge chickens at 20 weeks of age were divided into two groups, with one group fed a basal diet (control) and one fed a basal diet plus 10 g/kg green tea powder (GTP) for 12 weeks. Egg production (EP) and feed intake (FI) were recorded daily. Plasma lipid parameters, and apolipoprotein-B (Apo-B), 3-hydroxy-3-methylglutaryl coenzyme A reductase (HMGR), and lipoprotein lipase (LPL) expression were determined every four weeks. Egg production and FI showed no significant difference between the two groups ( > 0.05). Egg weight was 47.58 g in the control group, which was higher than that of the GTP group, and the feed-to-egg ratio (FCR) was 4.62 in the control group, which was lower than that of the GTP group after 12 weeks feeding. Compared with the control group, plasma orexin A ( < 0.05), high-density lipoprotein (HDL), apolipoprotein A (Apo A), and very high-density lipoprotein (VHDL) ( < 0.01, respectively) were increased. Plasma glucose (Glu), free fatty acid (FFA), apolipoprotein B (Apo B), triglyceride (TG), total cholesterol (TC) ( < 0.01, respectively), and low density lipoprotein (LDL) ( < 0.05) were decreased in the GTP group after 8 weeks feeding. The LPL expression in the liver was increased in the GTP group after 8 to 12 weeks feeding when compared to the control group ( < 0.05). Chickens fed GTP did not affect EP, but decreased egg weight, which might be because of lower plasma lipid concentration, increased plasma Orexin A, and liver LPL expression.
绿茶是否能促进产蛋尚不清楚。将20周龄的淮南鹧鸪鸡分为两组，一组饲喂基础日粮（对照组），另一组饲喂基础日粮加10 g/kg绿茶粉（GTP），持续12周。每天记录产蛋量（EP）和采食量（FI）。每四周测定血浆脂质参数、载脂蛋白B（Apo-B）、3-羟基-3-甲基戊二酰辅酶A还原酶（HMGR）和脂蛋白脂肪酶（LPL）表达。两组的产蛋量和采食量无显著差异（>0.05）。对照组蛋重为47.58 g，高于GTP组，饲喂12周后，对照组的料蛋比（FCR）为4.62，低于GTP组。与对照组相比，血浆食欲素A（<0.05）、高密度脂蛋白（HDL）、载脂蛋白A（Apo A）和极高密度脂蛋白（VHDL）（分别<0.01）升高。饲喂8周后，GTP组血浆葡萄糖（Glu）、游离脂肪酸（FFA）、载脂蛋白B（Apo B）、甘油三酯（TG）、总胆固醇（TC）（分别<0.01）和低密度脂蛋白（LDL）（<0.05）降低。与对照组相比，饲喂8至12周后，GTP组肝脏中LPL表达增加（<0.05）。饲喂GTP的鸡不影响产蛋量，但蛋重降低，这可能是由于血浆脂质浓度降低、血浆食欲素A增加和肝脏LPL表达增加所致。
