Effects of different protein levels on production performance and nutrient digestibility in Liaoning cashmere goats.

【Objective】 The study investigated the breeding standardization of Liaoning cashmere goats.【Method】 By the means of one-factor experiment,30 2-year-old and healthy female goats with similar body weight were arranged into 5 groups to study the effects of different dietary protein levels(92.6,100.6,110.2,121.2,131.9 g/kg) on production performance and nutrient digestibility in Liaonin cashmere goats.【Result】 The results showed that different dietary protein levels had no significant(P0.05)effect on live body gain and yield and qualities of cashmere(cashmere growth length,cashmere growth rate,cashmere yeild,cashmere length,cashmere diameter,cashmere high).There was significant(P0.05) decrease on guard hair growth when the protein level was above 110.2 g/kg;A significant(P0.01) positive correlation was found between dietary protein level and crude protein apparent digestibility,there was a significant(P0.01) negative correlation between dietary protein level and energy apparent digestibility,and there was no significant correlation(P0.05)between dietary protein level and crude fiber apparent digestibility.When the protein level was above 110.2 g/kg,energy apparent digestibility declined significantly.【Conclusion】 The dietary protein level of 110.2 g/kg is suitable for Liaoning cashmere goats.