Effective Energy Values of 4 Grains Feed Ingredients for Broiler Chickens Using Regression Analysis Method

FANG Chengkun; YU Qifang; ADEOLA Olayiwola; HE Jianhua

doi:10.3969/j.issn.1006-267x.2021.02.022

Chinese Journal of Animal Nutrition >

2021 , Vol. 33 >Issue 2: 811 - 821

DOI: https://doi.org/10.3969/j.issn.1006-267x.2021.02.022

Effective Energy Values of 4 Grains Feed Ingredients for Broiler Chickens Using Regression Analysis Method

FANG Chengkun ,
YU Qifang ,
ADEOLA Olayiwola ,
HE Jianhua

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1. College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China;
2. Department of Animal Sciences, Purdue University, West Lafayette IN 47906, America

Received date: 2020-10-18

Online published: 2021-02-04

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Abstract

The objective of this experiment was to evaluate the effective energy values of barley, triticale, wheat and rye, optimize the existing formula database, and gradually realize the accurate supply of dietary nutrition. By using regression analysis method, and the experiment was divided into two batches, experiment 1 (Exp.1) evaluated the ileal digestibility (IDE), metabolic energy (ME) and nitrogen-corrected metabolic energy (MEn) of barley and triticale, experiment 2 (Exp.2) evaluated IDE, ME and MEn of wheat and rye. In each experiment, a total of 320 one-day-old male Ross 708 broiler chickens were randomly divided into 5 groups with 8 replicates per group and 8 chickens per replicate. 1 to 20 days old was the pre-test period, and broiler chickens were fed a basal diet; 21 to 28 days old was the experimental period, and broiler chickens were fed the diet and experimental diet, respectively. The 5 groups' diets at the age of 21 to 28 days in Exp.1 were as follows: basal diet, barley-containing diet (250 g/kg barley), barley-containing diet (500 g/kg barley), triticale-containing diet (250 g/kg triticale),triticale-containing diet (500 g/kg triticale). The 5 groups' diets at the age of 21 to 28 days in Exp.2 were as follows: basal diet, wheat-containing diet (250 g/kg wheat), wheat-containing diet (500 g/kg wheat), rye-containing diet (250 g/kg rye), rye-containing diet (500 g/kg rye). The results showed that the additions of barley, triticale, wheat and rye had no significant effects on the growth performance of broiler chickens (P>0.05). There was an extremely significant linear decrease relationship between the substitution amount of barley and the ileal digestibility of dry matter and energy, the total tract metabolizability of dry matter, nitrogen and energy, and IDE, ME, MEn (P<0.01). There was an extremely significant linear decrease relationship between the substitution amount of triticale and the total tract metabolizability of nitrogen, and IDE, ME, MEn (P<0.01), and there was a significant or extremely significant quadratic curve relationship between the substitution amount of triticale and the ileal digestibility of dry matter, energy and IDE (P<0.05 or P<0.01). There was a significant or extremely significant linear decrease relationship between the substitution amount of wheat and the total tract metabolizability of dry matter, nitrogen, energy and nitrogen-corrected energy (P<0.05 or P<0.01), and there was a significant or extremely significant quadratic curve relationship between the substitution amount of wheat and the ileal digestibility of dry matter and energy, and IDE (P<0.05 or P<0.01). There was a significant or extremely significant linear decrease relationship between the substitution amount of rye and the ileal digestibility of dry matter and energy, and the total tract metabolizability of dry matter and nitrogen (P<0.05 or P<0.01), and there was a significant or extremely significant quadratic curve relationship between the substitution amount of rye and the ileal digestibility of dry matter and energy, and the total tract metabolizability of dry matter and nitrogen, energy and nitrogen-corrected energy, and IDE, ME, MEn (P<0.05 or P<0.01). According to the regression analysis, the IDE, ME and MEn of broiler chickens in barley are 9.31, 10.50 and 10.29 MJ/kg, those in triticale are 10.99, 11.80 and 11.43 MJ/kg, those in wheat are 10.59, 11.81 and 11.28 MJ/kg, and those in rye are 11.97, 12.56 and 11.83 MJ/kg, respectively.

Key words： grains feed ingredients; broiler chickens; regression analysis; effective energy

Cite this article

FANG Chengkun , YU Qifang , ADEOLA Olayiwola , HE Jianhua . Effective Energy Values of 4 Grains Feed Ingredients for Broiler Chickens Using Regression Analysis Method[J]. Chinese Journal of Animal Nutrition, 2021 , 33(2) : 811 -821 . DOI: 10.3969/j.issn.1006-267x.2021.02.022

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