Energy Utilization of Soybean Oil, Lard, Phosphatide Oil and Blend Oil for Broiler Chickens Determined Using Equal Proportion Regression Method

ZHANG Yuchen; CAO Manhu; LUO Man; FAN Xiangyu; HUANG Tailai; ZHOU Ting

doi:10.3969/j.issn.1006-267x.2020.12.023

2020 , Vol. 32 >Issue 12: 5692 - 5703

DOI: https://doi.org/10.3969/j.issn.1006-267x.2020.12.023

Energy Utilization of Soybean Oil, Lard, Phosphatide Oil and Blend Oil for Broiler Chickens Determined Using Equal Proportion Regression Method

ZHANG Yuchen ,
CAO Manhu ,
LUO Man ,
FAN Xiangyu ,
HUANG Tailai ,
ZHOU Ting

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1. College of Animal Science and Technology, Hunan Agricultural University, Changsha 410128, China;
2. International Department of Yali High School, Changsha 410100, China

Received date: 2020-05-25

Online published: 2020-12-07

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Abstract

This experiment was conducted to evaluate the ileal digestible energy (IDE), metabolic energy (ME) and nitrogen-corrected metabolizable energy (MEn) of soybean oil, lard, phospholipid oil and mixed oil (soybean oil:lard=1:1) for broiler chickens. A total of 576 female Arbor Acres broiler chickens with the body of (640±1) g and at the age of 21 days were randomly divided into one control group and eight trial groups, and each group had eight replicates with eight birds per replicate. Broiler chickens in the control group were fed a basal diet, while those in trial groups were fed new diets. The new diets were prepared using soybean oil, lard, phosphatide oil and blend oil replaced 4% or 8% basal diet, respectively. The ratio of corn to soybean meal in diets of control group and trial groups was the same, which was 12.04:7.00. Titanium dioxide (TiO₂) was used as an indicator added into diets, and the adding level was 0.5%. Excreta was collected on 25, 26 and 27 days of age for measuring the utilization rates of dry matter, nitrogen and energy and calculating the ME and MEn. At the 28 days of age, all birds were slaughtered, and the chyme was collected from the distal ileum for measuring utilization rates of dry matter, nitrogen and energy and calculating the IDE. The results showed that there were extremely significant linear relationships between the soybean oil replacement proportion and the utilization rates of dry matter, nitrogen and energy in chyme from the distal ileum and total intestinal excreta, IDE, ME and MEn (P<0.01); there were extremely significant quadratic relationships between the lard replacement proportion and the utilization rates of dry matte and energy in chyme from the distal ileum and IDE (P<0.01), and there were extremely significant linear and quadratic relationships between the lard replacement proportion and the utilization rates of dry matter, nitrogen and energy in total intestinal excreta and ME, MEn (P<0.01); there were extremely significant linear and quadratic relationships between the phosphatide oil replacement proportion and the utilization rates of dry matter, nitrogen and energy in chyme from the distal ileum and IDE (P<0.01), and there were extremely significant linear relationships between the phosphatide oil replacement proportion and the utilization rates of dry matter, nitrogen and energy in total intestinal excreta and ME, MEn (P<0.01); there were extremely significant linear and quadratic relationships between the blend oil replacement proportion and the utilization rates of dry matter, nitrogen and energy in chyme from the distal ileum and total intestinal excreta, IDE, ME and MEn (P<0.01). Then, according to the proportion of basal diet replacement by correlation between soybean oil, lard, phosphatide oil and blend oil and the energy supplied by soybean oil, lard, phosphatide oil and blend oil in new diets, the regression equations for ME, MEn and IDE of soybean oil, lard, phosphatide oil and blend oil was obtained as follows: ME=0.14_(0.01)+33.66_(1.46) soybean oil replacement proportion+38.82_(1.53) lard replacement proportion+39.90_(1.52) phosphatide oil replacement proportion+50.83_(1.83) blend oil replacement proportion, R²=0.951; MEn=0.10_(0.01)+32.84_(1.27) soybean oil replacement proportion+37.58_(1.44) lard replacement proportion+38.22_(1.43) phosphatide oil replacement proportion+49.75_(1.43) blend oil replacement proportion, R²=0.954; IDE=0.43_(0.02)+41.35_(3.10) soybean oil replacement proportion+41.05_(3.25) lard replacement proportion+41.87_(3.21) phosphatide oil replacement proportion+44.23_(3.22) blend oil replacement proportion, R²=0.811. According to the above regression equation, the IDE, ME and MEn for soybean oil are 41.35, 41.35 and 32.84 MJ/kg DM, respectively; for lard are 41.05, 38.82 and 37.58 MJ/kg DM, respectively; for phosphatide oil are 41.87, 39.90 and 38.22 MJ/kg DM, respectively; and for blend oil are 44.23, 50.83 and 49.75 MJ/kg DM, respectively.

Key words： broiler chickens; oil; IDE; ME; MEn

Cite this article

ZHANG Yuchen , CAO Manhu , LUO Man , FAN Xiangyu , HUANG Tailai , ZHOU Ting . Energy Utilization of Soybean Oil, Lard, Phosphatide Oil and Blend Oil for Broiler Chickens Determined Using Equal Proportion Regression Method[J]. Chinese Journal of Animal Nutrition, 2020 , 32(12) : 5692 -5703 . DOI: 10.3969/j.issn.1006-267x.2020.12.023

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