Influence of Different Fattening Models on Weight Gain and Meat Production Performance of Guanling Yellow Cattle
To investigate the effect of different fattening modes on the performance and meat performance of Guanling yellow cattle,this study utilized 60 Guanling yellow cattle aged 180 days with a weight of(200±3)kg.They were randomly divided into two groups,labeled as Group A and Group B,each comprising 30 Guanling yellow cattle.Within each group,there were five replicates,with six heads per replicate.Group A was fed a full mixed ration throughout the fattening period from 210 days of age until slaughter,employing a linear fattening mode.On the other hand,Group B was fed a full mixed ration during the growth period from 210 to 360 days of age using a staged fattening mode,followed by a switch to the full mixed ration for the fattening period after 361 days of age.The average daily weight gain of Guanling yellow cattle during the staged fattening period was calculated,and meat performance indicators of Guanling yellow cattle slaughtered at 540 days of age were examined.The experimental results revealed that the weight gain performance of Groups A and B varied across different age segments.The test results showed that at 210-360 days of age,when the yellow cattle were in the nursery period,the average daily weight gain of Group A was higher than that of Group B(P<0.05);and at 361-540 days of age,when the yellow cattle were in the fattening period,the average daily weight gain of Group B was higher than that of Group A(P>0.05).In addition,the pre-slaughter live weight,carcass weight,net meat weight,net meat percentage,bone weight and bone percentage of yellow cattle in Group B were slightly higher than those in Group A(P>0.05).In conclusion,the results suggested that the staged fattening mode was more suitable than the linear fattening mode for improving the growth and meat quality performance of Guanling yellow cattle.Therefore,it is recommended to prioritize the adoption of the staged fattening mode in Guanling yellow cattle breeding.
fattening modelGuanling yellow cattleweight gainmeat production performance
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