Effects of dietary supplementation with green tea polyphenols on digestion and meat quality in lambs infected with Haemonchus contortus.

Abstract

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.

• Authors: R Z Zhong, H Y Li, Y Fang, H X Sun, D W Zhou
• Journal: Meat science (Meat Sci) Vol. 105 Pg. 1-7 (Jul 2015) ISSN: 1873-4138 [Electronic] England
• PMID: 25746574 (Publication Type: Comparative Study, Journal Article, Randomized Controlled Trial, Research Support, Non-U.S. Gov't)
• Copyright: Copyright © 2015 Elsevier Ltd. All rights reserved.

Chemical References

• Amino Acids
• Antioxidants
• Pigments, Biological
• Polyphenols
• Tea
• Thiobarbituric Acid Reactive Substances

Topics

• Amino Acids (analysis, blood)
• Animals
• Antioxidants (administration & dosage, adverse effects, analysis, therapeutic use)
• Camellia sinensis (chemistry)
• China
• Diet (adverse effects, veterinary)
• Digestion
• Feces (chemistry, parasitology)
• Food Handling
• Food Quality
• Haemonchiasis (diet therapy, metabolism, parasitology, veterinary)
• Haemonchus (isolation & purification)
• Male
• Meat (analysis, parasitology)
• Muscle, Skeletal (chemistry, metabolism)
• Pigments, Biological (analysis, metabolism)
• Plant Leaves (chemistry)
• Polyphenols (administration & dosage, adverse effects, therapeutic use)
• Sheep
• Sheep Diseases (blood, diet therapy, metabolism, parasitology)
• Sheep, Domestic
• Tea (chemistry)
• Thiobarbituric Acid Reactive Substances (analysis, metabolism)