Abstract:
【Objective】 The purpose of this experiment is to explore the effects of feeding steam pressed corn on meat production performance and liver nutrient metabolism of Xinjiang brown cattle.
【Methods】 The healthy cattle in Xinjiang were randomly divided into two groups, namely, the normal corn crushing group and the normal corn crushing group.On the morning of the beginning and end of the experiment, the test cattle were weighed on an empty stomach and recorded.After slaughtering, the liver samples were sub packed and frozen in liquid nitrogen for detection.
【Results】 (1) The average daily gain (ADG) and pre-mortem live weight of the experimental group were significantly higher than those of the control group (
P<0.05), and the eye muscle area of the experimental group was significantly higher than that of the control group (
P<0.05).There was no significant difference in carcass weight, eye muscle height and backfat thickness between the two groups (
P>0.05).(2) There was no significant difference in urea (urea), ammonia nitrogen (NH3-N), alanine aminotransferase (ALT) and aspartate aminotransferase (AST) between the experimental group and the control group (
P>0.05).(3)Acetylacetic acid (ACAC) in the experimental group was significantly lower than that in the control group (
P<0.05).The key products and enzymes of liver glycogen (LG), pyruvate carboxylase (PC), liver esterase (HL) in the experimental group were significantly lower than those in the control group (
P<0.01).
【Conclusion】 Feeding steam pressed corn can improve the weight gain and meat production of Xinjiang brown cattle and bulls and promote the glycolipid catabolism in the liver of Xinjiang brown bull and reduce the content of glycolipid deposited in the liver.