LOW DOSE OF COPPER IS MORE EFFECTIVE ON INTESTINAL MORPHOLOGY IN WEANED PIGS

Autor:	Willian Hideharu de Eiroz Okiyama, Maitê Vidal Mendonça, Marcus Antonio Zanetti, Simone Maria Massami Kitamura Martins, Ana Paula Pinoti Pavaneli
Rok vydání:	2020
Předmět:	General Veterinary Chemistry Crypt chemistry.chemical_element Ileum Feed conversion ratio Copper Jejunum medicine.anatomical_structure Animal science medicine Duodenum Weaning Feces
Zdroj:	Archives of Veterinary Science. 25
ISSN:	2317-6822 1517-784X
DOI:	10.5380/avs.v25i4.69303
Popis:	The present experiment was carried out to determine the relation between pharmacological levels of copper (Cu) (125 and 200 mg/kg) and source (cooper sulfate (CuSO 4 ) and tribasic copper chloride (TBCC)) on growth performance, diarrhea incidence and intestinal morphology of piglets after weaning. At 21 days of age, 96 weaned piglets were sorted by body weight (BW, 6.14 ± 0.269 kg) and randomly assigned to 4 treatments according to a block design of a 2 x 2 factorial arrangement: level (125 and 200 mg/kg) and source (CuSO 4 or TBCC). Growth performance was evaluated by measuring BW, average daily feed intake (ADFI), average daily gain (ADG) and feed conversion ratio (FCR) from 21 to 63 days of age. Fecal score was evaluated daily and at 63 days of age tissue samples were collected from the duodenum, jejunum and ileum for intestinal morphology analysis. At this moment, it was evaluated villus height (VH), crypt depth (CD) and villus height to crypt depth ratio (VH:CD ratio). There was no difference between level and source (P>0.05) for any growth performance. Piglets fed 200 mg/kg TBCC had the lowest diarrhea frequency (P
Databáze:	OpenAIRE
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