Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, Jilin 130102, PR China; College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin 130118, PR China.
College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin 130118, PR China.
Meat Sci. 2015 Jul;105:1-7. doi: 10.1016/j.meatsci.2015.02.003. Epub 2015 Feb 14.
Ujumqin sheep are susceptible to infection by the gastrointestinal nematode Haemonchus contortus, which reduces productivity and total meat yield in sheep. Thus, the effects of green tea polyphenol (GTP) supplements (0, 2, 4, or 6g of GTP/kg feed) on dietary nutrient digestibility and meat quality in lambs infected with H. contortus were examined; control lambs were not infected. H. contortus infections did not affect digestion but the apparent digestibilities of nutrients were decreased by dietary 2g of GTP/kg feed supplementation. There was an interaction between treatment and sampling time on plasma total protein, urea nitrogen, and amino acid concentrations. The antioxidant activity and meat color of INFGTP0 lambs decreased. In conclusion, H. contortus infections in lambs decreased meat quality, but appropriate levels of dietary GTP supplementation diminished these negative effects though lower dose of GTP supplement showed negative effects on digestion.
乌珠穆沁羊易感染胃肠道线虫捻转血矛线虫，这会降低绵羊的生产力和总肉产量。因此，研究了绿茶多酚（GTP）补充剂（0、2、4 或 6g GTP/kg 饲料）对感染捻转血矛线虫的羔羊的饲料养分消化率和肉质的影响；对照羔羊未感染。捻转血矛线虫感染不会影响消化，但日粮中添加 2g GTP/kg 饲料会降低养分的表观消化率。处理和采样时间对血浆总蛋白、尿素氮和氨基酸浓度有交互作用。INFGTP0 羔羊的抗氧化活性和肉色下降。总之，羔羊感染捻转血矛线虫会降低肉质，但日粮中适当水平的 GTP 补充剂可以减轻这些负面影响，尽管低剂量的 GTP 补充剂对消化有负面影响。
