畜試土雞高畜11號品系之生長與產蛋性能遺傳參數估算

Estimation of genetic parameters for growth performance and egg production traits in TLRI K11 chicken

梁筱梅(Hsiao-Mei Liang) ； 鄭裕信(Yu-Shin Cheng) ； 林德育(Der-Yuh Lin) ； 康獻仁(Shann-Ren Kang) ； 洪國翔(Kuo-Hsiang Hung) ； 許岩得(Yan-Der Hsu) ； 林正鏞(Cheng-Yung Lin)

《畜產研究》 50卷2期 (2017/06) Pp. 86-95

摘要

本研究以基因鑑定方式選育帶有熱休克蛋白70基因BB型與泌乳素接受體基因RR型雞隻，並育成純合型基因組合之畜試土雞高畜11號品系，經收集累積7代之生長與產蛋性能，依系譜相關資料採多性狀動物模式進行遺傳參數估算。結果顯示，雛雞重與16週齡體重之遺傳率分別為0.509與0.326。在表型相關方面，此二性狀間呈低度正相關（r_p=0.083）；在遺傳相關方面呈高度遺傳正相關（r_g=0.966）。另初產蛋重、初產日齡、初產體重與至40週齡產蛋數，其遺傳率分別為0.164、0.487、0.649與0.352，在表型相關方面，初產蛋重與初產日齡、初產體重、至40週齡產蛋數呈高度正相關（r_p=0.884，P＜0.01；r_p=0.929，P＜0.01，r_p=0.788，P＜0.01），初產日齡與初產體重、至40週齡產蛋數呈高度顯著正相關（r_p=0.920，P＜0.01；r_p=0.781，P＜0.01）。初產體重與至40週齡產蛋數呈高度正相關（r_p=0.795，P＜0.01），在遺傳相關方面，初產蛋重與初產日齡、初產體重呈高度遺傳正相關（r_g=0.695；r_g=0.600）與至40週齡產蛋數呈高度遺傳負相關（r_g=-0.993），初產日齡與初產體重呈高度遺傳正相關（r_g=0.604）並與至40週齡產蛋數呈高度遺傳負相關（r_g=-0.772），初產體重與至40週齡產蛋數呈高度遺傳負相關（r_g=-0.604）。初步結果顯示欲獲得至40週齡產蛋數較高之畜試土雞高畜11號品系雞隻，可直接選拔至40週齡產蛋數較高之雞隻為宜。期望經多代選拔產蛋數所累積之資料能進一步評估對相關性狀之遺傳反應，以做為育種選拔之依據。

關鍵字

畜試土雞高畜11號品系 ； 生長性狀 ； 產蛋性能

並列摘要

The purpose of the study was conducted to evaluate the genetic parameters for TLRI K11 chicken of Livestock Research Institute which had the homozygote of HSP70 and PRLR gene. 1,155 of TLRI K11 chicken were cumulatively surveyed and collected for growth performance and egg product traits in seven generations. The results showed that the heritability of the body weight at hatch (BW0), body weight of 16 week of age (BW16), the average number of eggs laid up to 40 weeks of age (EN40), average egg weight at the 1st egg (FEW), average body weight at the 1st egg (BWAFE) and age at the first egg (AFE) were 0.509, 0.326, 0.352, 0.164, 0.649 and 0.487, respectively. The genetic correlation analysis showed that BW0 had a high positive genetic correlation with BW16 (r_g = 0.966). FEW had a high positive genetic correlation with AFE and BWAFE (r_g = 0.695; r_g = 0.600), respectively. AFE had a high positive genetic correlation with BWAFE (r_g =0.604), AFE and BWAFE had a high negative genetic correlation with EN40 (r_g = -0.772; r_g = -0.604). The results indicated that to selected TLRI K11 chicken for high EN40 heritability may directly select EN40 performance of chicken. We expected that data after selection of multi-generation for growth performance and egg number can further estimate the genetic responses of related traits for the basis of breeding and selection.

並列關鍵字

TLRI K11 chicken ； Growth performance ； Egg production traits