Micro y nanoencapsulación: una perspectiva biotecnológica en la producción animal

The micro and nano encapsulation is defined as the packaging of an active through an encapsulating agent (polymer) acquiring properties and characteristics different from their higher scale for their later liberation, under controlled and determined conditions, which promote an increase in the useful life of the product and ease their manipulation when converting a liquid material to solid forms. The microparticles are spherical particles with sizes from 1 to 250 m. The nanoparticles are polymere submicronic systems (1 m). In this revision some devices, substances and systems used in animal production and veterinary medicine are detailed, as well as their reach and limitations in different fields of study

Comportamiento productivo de ovinos de pelo usando un extracto comercial de tanino condensado

The objective of this study was to evaluate the viability of using commercial SilvaFeed® condensed tannins (CT) when they are added to sheep’s diets in 4 % DM. The study lasted 60 d, 22 sheep were used, in a completely random design with 11 repetitions per treatment. The following were evaluated: productive behavior (daily weight gain, dietary conversion and dietary efficiency), dorsal fat (EGD), and eye area of the rib (AM). The diets were formulated according to the sheep’s requirements, being iso-proteic and iso-energetic. The data were analyzed with the SAS software PROC GLM. The inclusion of 4 % of CT to the diets showed that the DM consumption was 1200 g d1, the daily weight gain, dietary conversion, AM and EGD were not different between treatments (P0.05). This study indicated that the inclusion of 4 % of CT to the sheep’s diet did not affect the productive variables