Effects of Different Protein Ingredients on Growth Performance, Nutrient Apparent Digestibility, Serum Immune and Antioxidant Indexes and Intestinal Morphology of Weaned Piglets

LIU Sujie; WANG Jian; HE Tengfei; LIU Hansuo; LONG Shenfei; ZANG Jianjun; PIAO Xiangshu; WANG Chunlin

doi:10.3969/j.issn.1006-267x.2022.04.020

2022 , Vol. 34 >Issue 4: 2238 - 2248

DOI: https://doi.org/10.3969/j.issn.1006-267x.2022.04.020

Effects of Different Protein Ingredients on Growth Performance, Nutrient Apparent Digestibility, Serum Immune and Antioxidant Indexes and Intestinal Morphology of Weaned Piglets

LIU Sujie ,
WANG Jian ,
HE Tengfei ,
LIU Hansuo ,
LONG Shenfei ,
ZANG Jianjun ,
PIAO Xiangshu ,
WANG Chunlin

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State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China

Received date: 2021-09-25

Online published: 2022-04-14

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Abstract

This experiment was conducted to study the effects of different protein ingredients (soybean protein concentrate, insect protein KT100 and plasma protein powder) on growth performance, nutrient apparent digestibility, serum immune and antioxidant indexes and intestinal morphology of weaned piglets. A total of 108 healthy 28-day-old weaned piglets with similar body weight[(7.71±1.23) kg] were randomly allotted into 3 groups with 6 replicates per group and 6 pigs per replicate. The experiment was divided into early stage (days 1 to 14) and later stage (days 15 to 28). Pigs in group Ⅰ (control group) were fed an experimental diet contained 8% soybean protein concentrate in early stage, and fed an experimental diet contained 6% soybean protein concentrate in later stage; pigs in group Ⅱ were fed an experimental diet contained 8% insect protein KT100 in early stage, and fed an experimental diet contained 6% insect protein KT100 in later stage; pigs in group Ⅲ were fed an experimental diet contained 6% plasma protein powder in early stage, and fed an experimental diet contained 4% plasma protein powder in later stage. The experiment lasted for 28 days. The results showed as follows:1) in early stage, later stage and whole stage, there were no significant differences in average daily gain (ADG), average daily feed intake (ADFI) and feed conversion rate (FCR) of weaned piglets among all groups (P>0.05). 2) On day 14, compared with group Ⅰ, the crude protein (CP) digestibility of group Ⅱ showed a decrease tendency (P=0.07). On day 28, compared with group Ⅰ, the digestibility of dry matter (DM) and organic matter (OM) groups Ⅱ and Ⅲ was significantly increased (P<0.05), and the CP digestibility of group Ⅲ was significantly increased (P<0.05). 3) On days 14 and 28, there were no significant differences in serum immune and antioxidant indexes of weaned piglets among all groups (P>0.05). 4) compared with group Ⅰ, the ileal crypt depth of group Ⅱ was significantly increased (P<0.05). In conclusion, dietary insect protein KT100 has no negative effects on growth performance, immune and antioxidant function of weaned piglets.

Key words： weaned piglets; plasma protein powder; soybean protein concentrate; insect protein; growth performance; immune; antioxidant; intestinal morphology

Cite this article

LIU Sujie , WANG Jian , HE Tengfei , LIU Hansuo , LONG Shenfei , ZANG Jianjun , PIAO Xiangshu , WANG Chunlin . Effects of Different Protein Ingredients on Growth Performance, Nutrient Apparent Digestibility, Serum Immune and Antioxidant Indexes and Intestinal Morphology of Weaned Piglets[J]. Chinese Journal of Animal Nutrition, 2022 , 34(4) : 2238 -2248 . DOI: 10.3969/j.issn.1006-267x.2022.04.020

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