Citas bibligráficas
Nakandakari, L., (2013). Comportamiento productivo morfometría intestinal y cobre hepático en cuyes alimentados con niveles farmacológico de cobre en la dieta [Tesis, Universidad Nacional Agraria La Molina]. https://hdl.handle.net/20.500.12996/1576
Nakandakari, L., Comportamiento productivo morfometría intestinal y cobre hepático en cuyes alimentados con niveles farmacológico de cobre en la dieta [Tesis]. : Universidad Nacional Agraria La Molina; 2013. https://hdl.handle.net/20.500.12996/1576
@mastersthesis{renati/247132,
title = "Comportamiento productivo morfometría intestinal y cobre hepático en cuyes alimentados con niveles farmacológico de cobre en la dieta",
author = "Nakandakari Arashiro, Luis Alfredo",
publisher = "Universidad Nacional Agraria La Molina",
year = "2013"
}
The objective of the present study was to evaluate the effect of dietary pharmacological levels of supplementary copper on the performance, intestinal morphometry, hepatic copper, and copper in feces of guinea pigs. Sixty weaned male guinea pigs were used for this experiment. They were randomly distributed into four treatments with five replicates each and three animals per replicate. The treatments evaluated were: Tl, basal diet (0 ppm of supplementary Cu); T2, basal diet + 100 ppm Cu; T3, basal diet + 200 ppm Cu and T4, basal diet + 300 ppm Cu supplementary as copper sulfate. The evaluation period was 56 days. Initial weight, final weight, daily gain, voluntary feed intake, feed conversion ratio and mortality were measured. At the end of the experiment, five animals per treatment were sacrificed to take intestinal tissue samples to measure villus height, crypt depth and villus height:crypt depth ratio. Additionally liver samples were taken for histological evaluation and to determine its copper content, and digest cecum samples to determine copper concentration in feces. The results showed that the performance of guinea pigs were not significantly affected (P>0.05) by the dietary treatments. On the other hand, supplementary copper did not show a beneficial effect on intestinal morphometry and, on the contrary, it caused a significantly reduction (P<0;05) of the villus height and villus height:crypt depth ratio as the level of supplementary copper increased. The copper concentration in liver and feces increased significantly (P<0.05) as the level of supplementary copper increased. In conclusion, dietary pharmacological levels of supplementary copper showed a negative effect on intestinal morphometry and increased the concentration of copper in liver and feces, but did not have any influence on the performance of fattening guinea pigs.
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