期刊文献+

种猪的繁殖 被引量:2

下载PDF
导出
摘要 1猪的初配年龄我国地方猪种的性成熟早,公猪一般在7~8月龄,体重达70—80千克重时开始配种。培育品种,如哈白、黑花猪,要在8-9月龄,体重达90千克时配种。对引进品种猪,如长白猪、大约克夏猪、汉普夏猪、杜洛克猪等,在7~8月龄,体重达到100~110千克时方可配种。使用过早,影响公猪本身发育及配种效果;使用过晚,容易使公猪过肥,影响配种率,也影响经济效益。
作者 吕广玲
出处 《养殖技术顾问》 2013年第8期26-26,共1页 Technical Advisor for Animal Husbandry
  • 相关文献

同被引文献25

  • 1彭新社,颜静.新丹系长白猪生产性能的初步观察[J].动物科学与动物医学,2005,22(9):56-56. 被引量:5
  • 2俞沛初,华修国,郭传甲.香猪繁殖特性的测定研究[J].养猪,2005(6):13-14. 被引量:6
  • 3Carrington J C,Ambros V.Role of microRNAs in plant and animal development[J].Science,2003,301(5631):336-338.
  • 4Li M,Liu Y,Wang T,et al.Repertoire of porcine microRNAs in adult ovary and testis by deep sequencing[J].International Journal of Biological Sciences,2011,7(7):1045.
  • 5Lian C,Sun B,Niu S,et al.A comparative profile of the microRNA transcriptome in immature and mature porcine testes using Solexa deep sequencing[J].FEBS Journal,2012,279(6):964-975.
  • 6Bouhallier F,Allioli N,Lavial F,et al.Role of miR-34c microRNA in the late steps of spermatogenesis[J].Rna,2010,16(4):720-731.
  • 7Lewis B P,Burge C B,Bartel D P.Conserved seed pairing,often flanked by adenosines,indicates that thousands of human genes are microRNA targets[J].Cell,2005,120(1):15-20.
  • 8Bao J,Li D,Wang L,et al.MicroRNA-449 and microRNA-34b/c function redundantly in murine testes by targeting E2F transcription factor-retinoblastoma protein(E2F-pRb)pathway[J].Journal of Biological Chemistry,2012,287(26):21686-21698.
  • 9Yang Q E,Racicot K E,Kaucher A V,et al.MicroRNAs 221 and222 regulate the undifferentiated state in mammalian male germ cells[J].Development,2013,140(2):280-290.
  • 10Huszar J M,Payne C J.MicroRNA 146(Mir146)modulates spermatogonial differentiation by retinoic acid in mice[J].Biology of Reproduction,2013,88(1):15.

引证文献2

二级引证文献2

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部