Dietary metabolizable energy and crude protein levels affect the performance, egg quality and biochemical parameters of a dual-purpose chicken was written by Geng, Ai Lian;Zhang, Qian Qian;Chang, Cheng;Wang, Hai Hong;Chu, Qin;Zhang, Jian;Yan, Zhi Xun;Liu, Hua Gui. And the article was included in Animal Biotechnology.Related Products of 137-08-6 This article mentions the following:
Effects of dietary metabolizable energy (ME) and crude protein (CP) level on performance, egg quality and biochem. parameters were studied in a dual-purpose chicken-Beijing You Chicken (BYC) at peak laying period. A 3 x 3 factorial experiment was arranged, including 3 levels of dietary ME (11.31, 11.51, 11.71 MJ/kg) and 3 levels of dietary CP (14%, 15%, 16%). The results showed that dietary CP level alone and the interaction of ME by CP affected the total feed intake (TFI) during 27-30 wks, dietary ME level affected the mortality rate of 27-34 wks of age (p = 0.018), with the highest mortality rate found in 11.31 MJ/kg group (3.10%). The albumen height (AH), Haugh unit (HU) and egg grade (EG) of 16% group was higher than those in 14% and 15% groups (p < 0.05). Serum IgG content in 11.31 MJ/kg group was lower than in 11.51 MJ/kg and 11.71 MJ/kg groups (p = 0.037). The present study suggested that dietary levels of 11.51 MJ/kg ME and 16.0% CP are enough to maintain the performance and egg quality of BYC at peak laying period. 11.31 MJ/kg ME increased the mortality of the chicken, which may be related to the decrease of the humoral immune function and antioxidative capability. In the experiment, the researchers used many compounds, for example, Calcium (R)-3-(2,4-dihydroxy-3,3-dimethylbutanamido)propanoate (cas: 137-08-6Related Products of 137-08-6).
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Referemce:
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