Abstract: 180 one-day-old Liangfeng chicken were selected and randomly divided into four groups,the chicken were fed with the daily ration for 42 days,in which the soybean meal was substituted with the different concentration of potato protein. The growth and slaughter performance of chicken was studied. Compared with the control,all trial groups of daily gain of the starter and finisher were significantly high.The daily gain of the trial group Ⅲ was significantly higher than the trial group Ⅰ which was same as the trial group Ⅱ in the starter. Apparently,the trial group Ⅲ was also the highest in the finisher. Feed intake was not significant between trial group Ⅰ and group Ⅱ in starter higher. In finisher and all period, trial group Ⅰ and trial group Ⅱwas significantly different. Group Ⅲ was much higher than group I and Ⅱ in every period. For feed-gain ratio,the trial groups was lower than the control in the starter,and the trial group Ⅲ was the lowest in all groups in the starter and finisher. After a slaughter trial was performed,weight,carcass percentage,eviscerated percentage,semi-eviscerated percentage,leg muscle percentage and chest muscle percentage was not apparently different between the trial groups and the control. In pH trial, significant differences were found between the control and trial group Ⅰ. Besides, the control group had a slight different with the trial group Ⅱ and Ⅲ. In the shear force,the trial group Ⅰ was not significantly different with the control and the trial group Ⅲ was lower than other groups. The results showed that,compared with control group,it was statistically significant for the daily feed intake,daily gain increased,and feed conversion rate decreased that chicks was fed with the daily ration including 4%-12%potato protein.

Key words: Concentrated potato protein, Liangfeng chicken, Growth performance, Slaughter performance

CLC Number: 

• S831