Utilização de dietas úmidas e de rações e água de bebida com edulcorante para leitões desmamados aos 21 dias de idade e efeitos sobre o desenvolvimento histológico e enzimático intestinal
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Data
2001-06-01
Autores
Silva, Caio Abércio da
Kronka, Rodolfo Nascimento [UNESP]
Thomaz, Maria Cristina [UNESP]
Kronka, Sérgio Nascimento [UNESP]
Soto, Wilson Castillo [UNESP]
Carvalho, Luís Euquério de [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Sociedade Brasileira de Zootecnia
Resumo
Um experimento foi realizado com leitões desmamados visando avaliar os efeitos de oito tratamentos, correspondentes à combinação dos fatores, apresentações de ração (seca e úmida), tipos de ração (sem e com edulcorante) e tipos de água de consumo (sem e com edulcorante) sobre o desenvolvimento morfológico e enzimático intestinal. Foram avaliadas a altura das vilosidades (V), a profundidade das criptas (C) e a relação altura das vilosidades e profundidade das criptas (V:C) do duodeno e do jejuno, o conteúdo de proteína na mucosa do jejuno, e as atividades enzimáticas (UA) da maltase, sacarase e dipeptidase. Utilizaram-se 32 leitões machos castrados, Large White x Landrace, desmamados aos 21 dias, submetidos aos tratamentos durante oito dias. O delineamento experimental foi em blocos casualizados, com oito tratamentos, fatorial 2 x 2 x 2, com quatro repetições. Foram observadas diferenças para a altura das vilosidades do duodeno para os grupos tratados com dieta úmida e ração com edulcorante e para a relação V:C do duodeno para os animais que receberam ração com edulcorante. Houve diferença para a UA da sacarase e da maltase para os grupos que receberam água sem edulcorante. As características histológicas foram favorecidas pelas dietas úmidas, o que pode sugerir que esta apresentação foi menos agressiva ao trato digestivo. Para os demais fatores os resultados contrariaram as expectativas de que o tratamento água com edulcorante melhoraria a qualidade do epitélio intestinal. A fase crítica pela qual os leitões foram submetidos, possivelmente, comprometeu os resultados.
An experiment was conducted with piglets allocated in eight treatments combinations with different types of diet (dry and wet), rations (with and without sweetener) and two types of drinking water (with and without sweetener), offered after weaning to study the effects on histology and intestine enzymatic development. Intestinal villi height, crypt depth, and relation between villi height and crypt depth of duodenum and jejunum, jejunum protein content and enzyme activity of maltase, sucrase and dipeptidase were evaluated. Thirty two Large White x Landrace castrated male piglets weaned at 21 days were utilized. At weaning the piglets were allocated to the treatments during 8 days. It was used a randomized block to study a factorial 2 x 2 x 2 with four replications. The results showed differences in duodenum height of villi for wet diet and ration with sweetener. Probably, the wet diet was better than dry diet, improving the quality of the intestinal tract. Also significant differences were found in the relationship between duodenum villi height and crypt depth for ration with sweetener. There were differences in enzyme activity of sucrase and maltase for water without sweetener. These results were different from initial hipothesis, where the water with sweetener would be better to improve the intestinal development. The experiment was conducted during a critical phase after weaning. It is possible that the results were influenced by this period.
An experiment was conducted with piglets allocated in eight treatments combinations with different types of diet (dry and wet), rations (with and without sweetener) and two types of drinking water (with and without sweetener), offered after weaning to study the effects on histology and intestine enzymatic development. Intestinal villi height, crypt depth, and relation between villi height and crypt depth of duodenum and jejunum, jejunum protein content and enzyme activity of maltase, sucrase and dipeptidase were evaluated. Thirty two Large White x Landrace castrated male piglets weaned at 21 days were utilized. At weaning the piglets were allocated to the treatments during 8 days. It was used a randomized block to study a factorial 2 x 2 x 2 with four replications. The results showed differences in duodenum height of villi for wet diet and ration with sweetener. Probably, the wet diet was better than dry diet, improving the quality of the intestinal tract. Also significant differences were found in the relationship between duodenum villi height and crypt depth for ration with sweetener. There were differences in enzyme activity of sucrase and maltase for water without sweetener. These results were different from initial hipothesis, where the water with sweetener would be better to improve the intestinal development. The experiment was conducted during a critical phase after weaning. It is possible that the results were influenced by this period.
Descrição
Palavras-chave
enzyme, Intestine, Histology, Swine, Water, wet feeding, Água, edulcorante, enzima, intestino, ração úmida, Suíno
Como citar
Revista Brasileira de Zootecnia. Sociedade Brasileira de Zootecnia, v. 30, n. 3, p. 794-801, 2001.