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。
出处
《养殖技术顾问》
2013年第8期26-26,共1页
Technical Advisor for Animal Husbandry
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.
二级引证文献2
-
1岑永秀,徐倩,黄世会,冉雪琴,王嘉福.香猪睾丸miR-449b和miR-222分子的发育性变化[J].畜牧与兽医,2017,49(6):20-27. 被引量:1
-
2彭馥芝,冉茂良,翁波,李智,董莲花,陈斌.猪睾丸组织定量PCR分析中内参基因的选择[J].中国农业科学,2017,50(15):3033-3041. 被引量:8
-
1闻殿英,刘志武,郭英全,吕耀忠,张宝荣,梁永会,周树山.黑花猪世代选育总结报告(1986~1990年)[J].黑龙江畜牧科技,1991(2):15-17.
-
2张宝荣,郭英全,吕耀忠,闻殿英,刘志武,梁永会,周树山.黑花猪遗传力的估测和分析[J].黑龙江畜牧科技,1991(1):27-30.
-
3周树山,刘志武,梁永会,郭英全,张宝荣,吕耀忠.黑花猪胴体和肉质性状在世代选育中的变化[J].黑龙江畜牧科技,1991(2):36-38.
-
4根号,李振宇.黄金蟒染上臭“蜱”气[J].小哥白尼(野生动物),2010(3):34-36.
-
5古月.常见花卉疑难杂症诊疗[J].花木盆景(上半月),2009(11):29-31.
-
6刘志武,张宝荣,闻殿英,郭英全,吕耀忠,梁永会,周树山.黑花猪胴体肉质性状与瘦肉率关系的分析[J].养猪,1991(2):28-28. 被引量:1
-
7一条蚯蚓的战争[J].家教世界,2017,0(1):46-46.
-
8郭英全,张宝荣.黑花猪的遗传力——生长发育性状及胴体性状[J].黑龙江畜牧科技,1990(2):33-35.
-
9房少新,桑艳芳.乳房炎奶牛被毛中矿物元素的测定[J].西北民族大学学报(自然科学版),2008,29(1):60-62.
-
10张宝荣,吕耀忠,郭英全,闻殿英,苏中.黑花猪瘦肉系世代选育方法及效果[J].黑龙江畜牧科技,1998(1):6-6.