Effects of dietary copper on intestinal mucosa enzyme activity, morphology, and turnover rates in weanling pigs
Article Abstract:
Supplementation of swine feeds with 250 ppm of copper (Cu) increased weight gain for the test group. The activities of glucose-6-phosphatase and alkaline phosphatase in the lower jejunum were lower for the experimental animals. The addition of Cu had no effect on the morphologic characteristics of the gastrointestinal tract. Cu decreased the turnover rate of cells in the upper and lower jejunum, and slowed the rate of cell migration up a crypt in the cecum. Generation interval was found to be longer in the lower jejunum for Cu-fed pigs.
Publication Name: Journal of Animal Science
Subject: Zoology and wildlife conservation
ISSN: 0021-8812
Year: 1992
User Contributions:
Comment about this article or add new information about this topic:
Efficacy of dietary d-alpha-tocopherol and dl-alpha-tocopheryl acetate for weanling pigs
Article Abstract:
Postweaning gain, feed intake and gain-to-feed ratios were not affected by the type of vitamin E administered. Greater tissue and serum concentrations were found with d-alpha-tocopherol, indicating that this form is more effectively absorbed and retained. Biological activity of d-alpha-tocopherol was found to be 2.44 IU/mg and that of dl-alpha-tocopherol acetate was 1.0 IU/mg. However, the acetate form was found to be more stable, retaining 97% of its initial activity after three months, against the alcohol which only had 80% retention.
Publication Name: Journal of Animal Science
Subject: Zoology and wildlife conservation
ISSN: 0021-8812
Year: 1992
User Contributions:
Comment about this article or add new information about this topic:
The effect of copper and fat addition to the diets of weanling swine on growth performance and serum fatty acids
Article Abstract:
The effect of copper (Cu) supplementation on the growth and plasma fatty acid profile of weanling pigs fed with fat-enriched diets was determined. Results showed that Cu promoted growth and improved fat utilization in weanlings. This indicates that copper may have a considerable role in the metabolism of fatty acids. It is suggested that swines kept at fat-enriched diets be given copper supplements for optimum utilization of dietary fat.
Publication Name: Journal of Animal Science
Subject: Zoology and wildlife conservation
ISSN: 0021-8812
Year: 1992
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: The effect of recent experience on female choice in zebra finches. Men's voices and women's choices
- Abstracts: Effects of helicopter noise on Mexican spotted owls. Influence of landscape composition on bird use of rowcrop fields
- Abstracts: Tradeoff between resistance and tolerance to herbivore damage in a morning glory. Co-evolution and plant resistance to natural enemies
- Abstracts: Interaction between a transcriptional activator and transcription factor IIB in vivo. Splicing-related catalysis by protein-free snRNAs
- Abstracts: Duration of anestrus in Pramenka and Romanov ewes in Yugoslavia. Exogenous oxytocin dilates the cervix in ewes