摘要
为了探讨不同生产期对澳美后代(即用澳美公羊授精鄂尔多斯细毛羊母羊所产羔羊)初生重的影响,该试验选取400只基础母羊,随机分为4组(全部试验羊的日粮水平及饲养管理条件均相同),分别在不同月份授精,待妊娠母羊产羔后,记录其初生重。结果发现,2009年1、2、3、4月妊娠母羊所产单羔的平均初生重依次为(4.81±0.51)、(4.30±0.68)、(3.95±0.70)、(3.98±0.47)kg,双羔的平均初生重依次为(4.03±0.85)、(3.08±0.24)、(3.08±0.53)、(2.87±0.40)kg;2010年1、2、3、4月妊娠母羊所产的羔羊单羔平均初生重分别为(5.43±0.63)、(4.63±0.55)、(4.60±0.73)、(4.54±0.63)kg,双羔的平均初生重分别为(4.10±0.48)、(3.30±0.94)、(3.28±0.68)、(3.10±0.18)kg。由此可见,澳美后代羔羊的初生重与生产期有密切关系,1—4月出生的澳美后代羔羊的初生重呈下降趋势,其中,1月出生的羔羊其初生重均高于2、3、4月出生的羔羊,且每年1月与4月出生羔羊的初生重差异均显著(P<0.05)。
In order to research the effect of different production period on the birth weight of Australia merino offspring（the lamb who Australian merino ram fertilization Ordos fine wool sheep ewes）,four hundred pregnancy ewe were selected and randomly divided into four groups.Four groups of sheep ewes were impregnated in different months,and then the lamb birth weight after pregnancy ewe production was recorded.The results showed that the average birth weight of single lamb which was born in January,February,March and April in 2009 were（4.81±0.51）,（4.30±0.68）,（3.95±0.70） and（3.98±0.47）kg,while the double lambs were（4.03±0.85）,（3.08±0.24）,（3.08±0.53） and（2.87±0.40）kg,respectively.The average birth weight of single lamb which was born in January,February,March and April in 2010 were（5.43±0.63）,（4.63±0.55）,（4.60±0.73） and（4.54±0.63）kg,while the double lambs were（4.10±0.48）,（3.30±0.94）,（3.28±0.68） and（3.10±0.18）kg,respectively.Thereby,there was close relationship between birth weight and production period for Australia merino offspring.There was a decrease of birth weight for Australia merino offspring from January to April,among them the birth weight of lamb which was born in January was higher than that of lamb which was born in February,March and April,and there were significant difference in the birth weight of single lamb and double lambs which were born in January and April of each year（P 0.01）.
出处
《畜牧与饲料科学》
2012年第9期26-27,共2页
Animal Husbandry and Feed Science
基金
国家绒毛用羊产业技术体系建设(nycytx-40)
鄂尔多斯市细毛羊选育提高项目
关键词
澳美后代
鄂尔多斯细毛羊
不同生产期
初生重
Australia merino offspring
Ordos fine wool sheep
different production period
birth weight
