The original：low dose of copper is more effective on intestinal morphology in weaned pigs
From the journal：Archives of Veterinary Science，v.25, n.4, p. 119-131, 2020
Website：https://orcid.org/0000-0002-5895-3678
Objective: To evaluate the effects of diet source copper and copper level on growth performance, diarrhea rate and intestinal morphology of weaned piglets.
Experiment design: ninety-six piglets weaned at 21 days of age were randomly divided into 4 groups with 6 piglets in each group, and replicates. The experiment lasted for 6 weeks and was divided into 4 stages of 21-28, 28-35, 35-49 and 49-63 days of age. Two copper sources were copper sulfate and basic copper chloride (TBCC), respectively. The dietary copper levels were 125 and 200mg/kg, respectively. From 21 to 35 days of age, all diets were supplemented with 2500 mg/kg zinc oxide. Piglets were observed daily for fecal scores (1-3 points), with normal fecal score being 1, unformed fecal score being 2, and watery fecal score being 3. Stool scores of 2 and 3 were recorded as diarrhea. At the end of the experiment, 6 piglets in each group were slaughtered and samples of duodenum, jejunum and ileum were collected.
Post time: Dec-21-2022
