Effects of Potassium Diformate on Growth Performance, Nutrient Apparent Digestibilities, Duodenal Digestive Enzyme Activities and Fecal Contamination Indexes of Growing Male Minks

WANG Qun; YU Xiaojun; LI Dandan; WANG Guang; WANG Lihua

doi:10.3969/j.issn.1006-267x.2021.07.060

2021 , Vol. 33 >Issue 7: 4194 - 4200

DOI: https://doi.org/10.3969/j.issn.1006-267x.2021.07.060

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Effects of Potassium Diformate on Growth Performance, Nutrient Apparent Digestibilities, Duodenal Digestive Enzyme Activities and Fecal Contamination Indexes of Growing Male Minks

WANG Qun ,
YU Xiaojun ,
LI Dandan ,
WANG Guang ,
WANG Lihua

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College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China

Received date: 2020-12-28

Online published: 2021-07-06

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Abstract

This experiment was conducted to study the effects of potassium diformate on growth performance, nutrient apparent digestibilities, duodenal digestive enzyme activities and fecal contamination indexes of growing male minks. A total of 120 healthy 65-day-old growing white male minks with similar body weight of (1 159.05±18.47) g were selected and divided into 6 groups with 10 replicates in each group and 2 minks in each replicate. Minks in group Ⅰ (control group) were fed a basal diet, and the others in groups Ⅱ, Ⅲ, Ⅳ, Ⅴ and Ⅵ were fed the basal diet supplemented with 1.5, 3.0, 4.5, 6.0 and 7.5 g/kg potassium diformate, respectively. The pre-experimental period lasted for 7 days, and the experimental period lasted for 60 days. The first 30 days was period Ⅰ, and the last 30 days was period Ⅱ. The results showed as follows:1) in period Ⅱ, compared with the control group, the feed to gain ratio of groups Ⅱ, Ⅲ, Ⅳ was significant decreased (P<0.05). 2) In period Ⅰ, compared with the control group, the apparent digestibilities of dry matter and crude protein of groups Ⅳ, Ⅴ and Ⅵ were significant increased (P<0.05). In period Ⅱ, compared with the control group, the dry matter apparent digestibility of groups Ⅱ, Ⅲ, Ⅳ and Ⅴ was significant increased (P<0.05), and the crude protein apparent digestibility of groups Ⅱ, Ⅲ, Ⅳ, Ⅴ and Ⅵ was significant increased (P<0.05). 3) Compared with the control group, the duodenal pH of groups Ⅱ, Ⅲ and Ⅳ was significant decreased (P<0.05); the duodenal trypsin activity of group Ⅱ, Ⅲ, Ⅳ, Ⅴ and Ⅵ was significant increased (P<0.05), and group Ⅲ was significantly higher than groups Ⅳ, Ⅴ and Ⅵ (P<0.05). 4) In period Ⅰ, compared with the control group, the fecal ammonia nitrogen content of group Ⅳ was significant decreased (P<0.05). In period Ⅱ, compared with the control group, the fecal total nitrogen content of groups Ⅱ, Ⅲ, Ⅳ, Ⅴ and Ⅵ was significant decreased (P<0.05). In conclusion, the supplementation of 3 g/kg potassium diformate in diets can improve the feed efficiency and nutrient apparent digestibilities, increase the duodenal trypsin activity, reduce fecal ammonia nitrogen and total nitrogen contents of growing male minks.

Key words： minks; growth performance; nutrient apparent digestibilities; digestive enzyme activities; feces

Cite this article

WANG Qun , YU Xiaojun , LI Dandan , WANG Guang , WANG Lihua . Effects of Potassium Diformate on Growth Performance, Nutrient Apparent Digestibilities, Duodenal Digestive Enzyme Activities and Fecal Contamination Indexes of Growing Male Minks[J]. Chinese Journal of Animal Nutrition, 2021 , 33(7) : 4194 -4200 . DOI: 10.3969/j.issn.1006-267x.2021.07.060

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