Effects of different dietary fiber on growth performance, intestinal development and digestive enzyme activity of piglets

doi:10.11686/cyxb2017514

Abstract

Abstract: The objective of this study was to explore the effects of different types of dietary fiber on the growth performance, intestinal development and digestive enzyme activities of piglets. A total of 840 piglets (Duroc×Landrace×Large×White, aged 32 days) with a body weight of (9.26±0.17) kg were randomly allotted to three treatments: a basic diet group (CG), an alfalfa meal group(AG) and a commodity fiber concentrate group(OG). Each treatment included four replicated pens with 70 piglets apiece. Intestinal weight and length, the small intestine villus morphology structure and its digestive enzyme activity concentration were measured after 25 days. The results showed that compared with CG, AG significantly reduced the piglets’ diarrhea rate (P<0.05), but that it had no significant effects on average daily gain (ADG), average daily feed intake (ADFI) or the feed:gain ratio (P>0.05). Compared with CG, AG and OG significantly increased the length and weight of piglets’ large intestine (P<0.05), while AG improved the villus height (VH) and villus height/crypt depth (VH/CD) of jejunum (P>0.05). Compared with OG, AG significantly increased VH and VH/CD (P<0.05). Compared with CG, OG significantly increased ileum VH (P<0.05) and significantly decreased amylase activity in jejunum (P<0.05). Compared with CG and OG, AG significantly increased chymotrypsin activity (P<0.05). These results show that adding appropriate amounts of alfalfa meal to piglets’ diet could promote intestinal development and reduce diarrhea rates, thus facilitating their growth and development.

Key words: dietary fiber, intestinal development, villus morphology structure, digestive enzyme activities, piglets

LIU Bo-shuai, WANG Wen-jing, SUN Xiao, LI De-feng, ZHU Xiao-yan, LI Zhen-tian, WANG Cheng-zhang, SHI Ying-hua, QIU Xiao-dong. Effects of different dietary fiber on growth performance, intestinal development and digestive enzyme activity of piglets[J]. Acta Prataculturae Sinica, 2018, 27(9): 175-182.

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