Optimum System of Early Selection of Layer

doi:10.3321/j.issn:1000-7091.1994.04.023

Abstract

Abstract: Using individual egg production records of Yuzhou Brown Layer in 1990-1991,three commonly used early selection methods-40、weeks synthetic selection index of individ-uals, 40-week total egg mass and optimum egg number of early periods were compared. The results showed that the best system was "40 -week total egg mass".In order to accelerategenetic advance and not to influence the accuracy of early selection, the proper fraction savedfor breeding is the lower when it is in 30-35% or 35-40%, and the higher is better when it is below 30%.

Key words: Layer, Early selection, Genetic advence

CLC Number:

S831.2

Kang Xiangtao, Lai Yinsheng, Wang Junshi, Li Ming, Guo Cheng. Optimum System of Early Selection of Layer[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1994, 9(4): 119-123. doi: 10.3321/j.issn:1000-7091.1994.04.023.

/ / Recommend / Download Citations

URL: http://www.hbnxb.net/EN/10.3321/j.issn:1000-7091.1994.04.023

http://www.hbnxb.net/EN/Y1994/V9/I4/119

[1]	ZHANG Ruiguo, LI Shaobin, WANG Jiqing, LIU Xiu, LUO Yuzhu. *Variation of FGF18* Gene in Goats and Its Effect on Cashmere Traits** [J]. ACTA AGRICULTURAE BOREALI-SINICA, 2020, 35(6): 202-207.
[2]	PEI Zhiqiang, LU Shuchang, WANG Xi, WANG Dafeng. Effects of Summer Catch Crops with Different Planting Densities on Greenhouse Soil Phosphorus Forms and Mobility [J]. ACTA AGRICULTURAE BOREALI-SINICA, 2020, 35(2): 126-132.
[3]	BAI Wei, SUN Zhan-xiang, ZHENG Jia-ming, HAO Wei-ping, LIU Qin, FENG Liang-shan, CAI Qian, FENG Chen. Effect of Plough Layer Constructions on Maize Growth and Yield in Western Liaoning Province [J]. ACTA AGRICULTURAE BOREALI-SINICA, 2015, 30(5): 205-213.
[4]	ZHAN Xiu-mei, PENG Jing, LI Xiu-long, LI Ting-ting, HAN Xiao-ri, SONG Tao, PAN Quan-liang. Effects of Tillage and Crop Residues Incorporation on Spring Maize Yield and Physical and Chemical Properties of Soil [J]. journal1, 2014, 29(3): 204-209.
[5]	YAN Min, ZHAO Yan-ming. Comparison of Two Methods Used to Test the Genetic Purity of Hybrid Rice Seeds [J]. ACTA AGRICULTURAE BOREALI-SINICA, 2008, 23(S1): 71-72.
[6]	YU Lu, WANG Ya-qian, ZHANG Shi-yuan, ZHOU Lian-gao, YAN Gui-qin, ZHANG Ying, LIN Xian-hua, GUO Xin-hua, YAN Han-han. Effects of Phosphorus Level on Internal Secretion and Bone Density in Old Layers [J]. ACTA AGRICULTURAE BOREALI-SINICA, 2008, 23(S1): 208-212.
[7]	YAN Min, ZHAO Yan-ming. Genetic Purity Testing of Seed from Two-line Hybrid Rice( Oryza spp.) of Variety Peizaminkezhan [J]. ACTA AGRICULTURAE BOREALI-SINICA, 2008, 23(3): 60-62.
[8]	ZHANG Hai-e, YUE Wen-quan, ZHANG Xin-zhong. Studies on Mechanism of Scab Resistance in Pears [J]. ACTA AGRICULTURAE BOREALI-SINICA, 2007, 22(S2): 239-242.
[9]	SONG Su fang, KANG Xiang tao, LI Ming, WANG Yan bin. Discussion and Practice of Rotational Breeding of Line Progenitor on Maintenance and Improvement of Production Performance of Line Ⅲ of Yuzhou Egg-brown Layer [J]. ACTA AGRICULTURAE BOREALI-SINICA, 2003, 18(2): 103-105.
[10]	KANG Xiangtao, SONG Sufang, HUANG Yanqun, LI Ming, WANG Yanbin, TIAN Yadong. Research on Law of Feather Auto-sex Discrimination in Yuzhou Brown Layer Breeding [J]. ACTA AGRICULTURAE BOREALI-SINICA, 2002, 17(3): 140-142.
[11]	Kang Xiangtao, Li Ming, Song Sufang, Huang Yanqun, Wang Yanbin, Lai Baochun. Crossing Effect Analysis to Yuzhou Blown Eggshell Layer Ⅰ、Ⅱ Line [J]. ACTA AGRICULTURAE BOREALI-SINICA, 1998, 13(4): 136-141.
[12]	Ding Boliang, Wang Yingzhen, Zhang Jian, Yan Minghua, Xia Shuli. Observation of Efficacy of Bivalent LiveInfectious Bursal Disease VaccineAgainst Virulent IBD Viruses [J]. ACTA AGRICULTURAE BOREALI-SINICA, 1998, 13(2): 137-140.
[13]	Li Sishen, Li Anfei, Wang Ying, Li Xianbin, Li Qingqi. Quantitative Methods for Selection from F＜sub＞1＜／sub＞ Generation in Wheat Cross Breeding [J]. ACTA AGRICULTURAE BOREALI-SINICA, 1998, 13(1): 6-12.
[14]	Kang Xiangtao, Lai Yinsheng, Wang Junshi, Li Ming, Song Sufang, Guo Cheng, Wang Yanbin, Ren Quanbing. Effects of Parent Yuzhou 913 Chicken with Different Colour Types on Feather Autosexing Accuracy Rate of Filial Generation [J]. ACTA AGRICULTURAE BOREALI-SINICA, 1995, 10(2): 116-119.
[15]	Jia Yinsuo, Cui Siping, Lee-Stadelmann O. Y.. The Relationship between Cell Protoplast Characteristics and Drought Resistance in Wheat Seedling [J]. ACTA AGRICULTURAE BOREALI-SINICA, 1989, 4(S1): 92-96.

Please choose a citation manager

Content to export