Suitable Energy Level and Growth Rule of Luxi Game Chickens

DOU Wenjie; JIANG Shuzhen; ZHANG Xianglun; YANG Weiren; ZHANG Guiguo; YANG Zaibin; CHEN Guanjun; GAO Xiang

doi:10.3969/j.issn.1006-267x.2013.11.010

Chinese Journal of Animal Nutrition >

2013 , Vol. 25 >Issue 11: 2576 - 2582

DOI: https://doi.org/10.3969/j.issn.1006-267x.2013.11.010

Poultry Nutrition

Suitable Energy Level and Growth Rule of Luxi Game Chickens

DOU Wenjie ,
JIANG Shuzhen ,
ZHANG Xianglun ,
YANG Weiren ,
ZHANG Guiguo ,
YANG Zaibin ,
CHEN Guanjun ,
GAO Xiang

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1. College of Animal Science and Technology, Shandong Agricultural University, Tai'an 271018, China;
2. Chinese Game Chickens Breeding Farm, Heze 274600, China

Received date: 2013-05-07

Online published: 2013-10-27

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Abstract

This experiment was conducted to study the effects of dietary metabolizable energy (ME) level on growth performance and formulate the growth model of Luxi game chickens. A total of 1 000 one-day-old Luxi game chickens were randomly divided into 5 groups with 4 replicates per group and 50 chickens per replicate. The feeding period was divided into two stages: 1 to 6 and 7 to 20 weeks of age. The dietary ME levels were as follows: 1 to 6 weeks of age, 11.98, 12.19, 12.38, 12.62 and 12.81 MJ/kg; 7 to 20 weeks of age, 11.63, 11.82, 12.03, 12.25 and 12.45 MJ/kg. The results showed as follows: 1) average daily feed intake (ADFI) and average daily gain of chickens were not significantly affected by dietary ME level aged from 1 to 20 weeks (P>0.05), while dietary ME level significantly affected feed to gain of chickens aged from 7 to 20 weeks (P<0.05), and the middle ME level group (1 to 6 weeks of age: 12.38 MJ/kg;7 to 20 weeks of age: 12.03 MJ/kg) was the lowest during whole stage. 2) From 1 to 20 weeks of age, the best fitting models of ADFI, body weight (BW) with age (t) as follows: ADFI=-0.01+5.73×t (R²=0.982 7, P<0.000 1); BW=1 607.60/(1+22.53e^-0.27t) (R²=0.996 7, P<0.000 1). In conclusion, according to the best feed to gain, the suitable ME level of Luxi game chickens aged from 1 to 6 and 7 to 20 weeks were 12.38 and 12.03 MJ/kg, respectively.

Key words： Luxi game chickens; metabolizable energy; growth performance; growth rule

Cite this article

DOU Wenjie , JIANG Shuzhen , ZHANG Xianglun , YANG Weiren , ZHANG Guiguo , YANG Zaibin , CHEN Guanjun , GAO Xiang . Suitable Energy Level and Growth Rule of Luxi Game Chickens[J]. Chinese Journal of Animal Nutrition, 2013 , 25(11) : 2576 -2582 . DOI: 10.3969/j.issn.1006-267x.2013.11.010

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