Dietary Energy Level：Effects on Slaughter Performance and Body Composition of Luxi Game Chickens

JIANG Shuzhen; DOU Wenjie; YANG Weiren; ZHANG Xianglun; YANG Zaibin; GAO Xiang; NIU Qunsheng

doi:10.3969/j.issn.1006-267x.2014.03.026

Chinese Journal of Animal Nutrition >

2014 , Vol. 26 >Issue 3: 747 - 753

DOI: https://doi.org/10.3969/j.issn.1006-267x.2014.03.026

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Dietary Energy Level：Effects on Slaughter Performance and Body Composition of Luxi Game Chickens

JIANG Shuzhen ,
DOU Wenjie ,
YANG Weiren ,
ZHANG Xianglun ,
YANG Zaibin ,
GAO Xiang ,
NIU Qunsheng

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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: 2013-09-13

Online published: 2014-03-04

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Abstract

This trial was conducted to study the effects of dietary energy level on slaughter performance and body composition of Luxi game chickens during growth prophase (1 to 42 days of age) and growth anaphase (43 to 140 days of age), respectively. A total of 1-day-old 1 000 sex-mixed healthy Luxi game chickens were randomly divided into five treatments with four replicates per treatment and fifty birds per replicate. The levels of metabolizable energy (ME) were 11.98, 12.19, 12.38, 12.62 and 12.81 MJ/kg of diets from 1 to 42 days of age, meanwhile, 11.63, 11.82, 12.03, 12.25 and 12.45 MJ/kg of diets from 43 to 140 days of age. Results showed that different dietary ME levels had no significant effects on slaughter performance of part-empty thoracic cavity rate, empty thoracic cavity rate, breast muscle rate, leg muscle rate, and body composition of moisture, crude protein (CP), ether extract (EE) and ash contents, and net energy retained (ER) of Luxi game chickens aged 42 and 140 days (P>0.05). Moisture content of Luxi game chickens aged 140 days significantly was lower than that of Luxi game chickens aged 1 and 42 days (P<0.05); CP and CA contents of Luxi game chickens were significantly increased with the ages increasing (P<0.05); EE content of Luxi game chickens aged 1 day significantly was higher than that of Luxi game chickens aged 42 and 140 days (P<0.05); ER of Luxi game chickens aged 42 days significantly was lower than that of Luxi game chickens aged 1 and 140 days (P<0.05). In conclusion, ages have significant influences on moisture, CP and CA contents, and ER of Luxi game chickens. The decline of EE content with ages of Luxi game chickens reflects the variety characteristics of Luxi game chickens.

Key words： Luxi game chickens; slaughter performance; body composition

Cite this article

JIANG Shuzhen , DOU Wenjie , YANG Weiren , ZHANG Xianglun , YANG Zaibin , GAO Xiang , NIU Qunsheng . Dietary Energy Level：Effects on Slaughter Performance and Body Composition of Luxi Game Chickens[J]. Chinese Journal of Animal Nutrition, 2014 , 26(3) : 747 -753 . DOI: 10.3969/j.issn.1006-267x.2014.03.026

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