Improvement Effect Survey of Local Yellow Cattle by South Devon Beef Cattle

In order to select the excellent beef cattle breed suitable for the improvement in this district.Randomly investigating the hybrids of South Devon and local cattle,South Devon,simmental and local cattle,Germany and local cattle,Germany,Simmental and local cattle in different districts,and the body weight,body size and slaughter performance of 59 hybrids were measured,the economic benefit of 86 individuals was investigated either.Result:The results showed that the birth weight,body weight at 3,6 and 12 months,daily gain and body size of hybridization improved cattle by south Devon cattle were higher than that of by German cattle.The difference was significant in birth weight,daily gain,body length,body height and chest measurement(P0.05).The hybrid of South Devon cattle was better than other improvement combinations in slaughter rate and net meat rate.Under the same feeding and management conditions,the economic benefit of feeding an improved cattle increased 70.19%~83.81% than feeding a local cattle.South Devon cattle was an ideal improvement breed in our county.