Effects of Energy Restriction on Indexes Related Lipid Metabolism in Embryonic Yolk and Tissues during the Late Laying Period in Broiler Breeders

JIANG Dan; LI Jinfeng; ZHANG Yanyun; ZHANG Jing; LI Chunlei; XU Liangmei; SUN Jinhua

doi:10.3969/j.issn.1006-267x.2013.11.008

2013 , Vol. 25 >Issue 11: 2559 - 2566

DOI: https://doi.org/10.3969/j.issn.1006-267x.2013.11.008

Poultry Nutrition

Effects of Energy Restriction on Indexes Related Lipid Metabolism in Embryonic Yolk and Tissues during the Late Laying Period in Broiler Breeders

JIANG Dan ,
LI Jinfeng ,
ZHANG Yanyun ,
ZHANG Jing ,
LI Chunlei ,
XU Liangmei ,
SUN Jinhua

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College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, China

Received date: 2013-05-27

Online published: 2013-10-27

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Abstract

This experiment was conducted to study the effects of energy restriction on Indexes Related lipid metabolism in embryonic yolk and tissues during the late laying period in broiler breeders. A single factor design was adopted and 270 AA broiler breeders(20 weeks of age)were randomly allocated into 3 groups with 6 replicates per group and 15 birds per replicate. The experiment was conducted when laying rate reached 5%. The birds in the control group were fed a based diet and those in trial groups were fed the diets with 80% and 70% energy levels of the basal diet, respectively. During the experimental period, feed intake in each group was restricted and set the same for each day. After artificial insemination at 60 weeks of age, 150 hatching eggs in each group were collected and hatched. The samples of tissues and yolk were allocated on days 12 (12E), 14 (14E), 16 (16E), 18 (18E), 20 (20E) and 21 (21E) of embryonic development. The results showed as follows: 1)Dietary energy restriction significantly decreased yolk ether extract and energy contents on 16E, 18E and 20E in 70% and 80% energy groups, as well as yolk cholesterol content at each embryonic day in 70% energy group (P<0.05). 2)Dietary energy restriction significantly decreased the weight of embryo on 20E in 70% energy group (P<0.05). 3)Dietary energy restriction significantly decreased cholesterol content in both breast muscle on 14E and liver on 16E, 18E and 20E in trial groups (P<0.05). Meanwhile, notable decreases displayed in cholesterol content in breast and thigh muscle on 16E in 70% energy group while opposite results displayed in thigh muscle on 20E, and breast muscle and liver on 21E in 80% energy group (P<0.05). Additionally, ether extract content in breast muscle on 21E in 80% energy group was significantly increased (P<0.05). The results demonstrate that dietary energy restriction directly affects lipid metabolism in embryonic yolk and tissues during the late laying period. The maternal effect occurs and becomes manifest after the day 12 of embryonic development.

Key words： energy restriction; broiler breeder; embryo; yolk; tissues; lipid metabolism

Cite this article

JIANG Dan , LI Jinfeng , ZHANG Yanyun , ZHANG Jing , LI Chunlei , XU Liangmei , SUN Jinhua . Effects of Energy Restriction on Indexes Related Lipid Metabolism in Embryonic Yolk and Tissues during the Late Laying Period in Broiler Breeders[J]. Chinese Journal of Animal Nutrition, 2013 , 25(11) : 2559 -2566 . DOI: 10.3969/j.issn.1006-267x.2013.11.008

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