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Study of Lamb Growth Rate and Meat Performance on German Merino×Han F1, Poll Dorset×Han F1

Author: SunShengXiang
Tutor: ZhangLiPing
School: Gansu Agricultural University
Course: Cultivation
Keywords: German Merino Dorset Small Tailed Han Lamb growth rate Meat performance
CLC: S826
Type: Master's thesis
Year: 2007
Downloads: 21
Quote: 0
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Abstract


This test measures the of foreign sheep breed German Merino , Poll Dorset and Small Tailed Han Miscellaneous generation Lamb growth rate and meat production performance , and for the control group compared to the purebred breeding the Small Tailed Han . Trial were randomized to extract Tak cold F1 the Tao Cold F1 and Han sheep newborn lambs male and female 12 each in the same nutrient levels under the conditions of use of barn feeding feeding , by measuring the growth and development of the 1-5 month-old lamb meat production performance indicators , two crosses their control group lambs in different stages of growth rate , weight, body size , and slaughter rates and other indicators , the results showed that : 1 , Germany cold and F1 , pottery cold F1 generation lambs 1-5 months of age weight were significantly greater than the Small Tailed Han ( P <0.05 ) . Test of Germany Cold F1 , average daily gain of the Dow cold F1 lambs were 214.42 g and 211.77 g , 15.67% and 14.24 % ( P <0.01 ) , respectively, compared with the Small Tailed Han Lamb . Germany Cold F1 2,1-5 months of age , body height Tao cold the F1 lambs and Small Tailed Han Lamb no significant differences (P> 0.05); Germany Cold F1 Tao cold body length index F1 Bust index , chest width index and chest depth index was significantly higher than the Small Tailed Han Lamb (P <0.05), said the Matilda cold F1, Dow cold F1 hybrid lambs the soma and development on the meat better performance characteristics than the Small Tailed Han . 3, the Des cold the F1 and Pottery cold F1 slaughter rates were 54.49% and 54.43% , 6.82% and 6.76% higher than the Small Tailed Han Lamb ; lean percentage were 45.03% and 44.15% , respectively, higher than Small Tailed Han 10.71% and 9.83% , said Matilda cold F1 , Tao cold F1 hybrids sheep meat production is much higher than the Small Tailed Han . 4 , the use of Merino sheep , Germany , Poll Dorset lamb hybrid varieties and Small Tailed Han the hybrids Lamb soma development and meat production performance showed good hybridization results . Prove that the use of German Mutton Merino sheep , Poll Dorset sheep superior varieties and Small Tailed Han hybridization is an effective way to improve sheep production levels .

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CLC: > Agricultural Sciences > Livestock, animal medicine,hunting,silkworm,bee > Livestock > Sheep
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