四川畜牧兽医
四川畜牧獸醫
사천축목수의
SICHUAN ANIMAL & VETERINARY SCIENCES
2014年
3期
30-31,32
,共3页
杂交代数%级进杂交%生产性能
雜交代數%級進雜交%生產性能
잡교대수%급진잡교%생산성능
Crossbreeding generation%Grading crossbreeding%Production performance
本研究选择12月龄皮南杂交(皮埃蒙特牛×本地南阳牛)公牛F1、F2、F3各30头,在7、8、9月份进行统一育肥试验,探讨夏季湿热气候对不同杂交后代生长发育状况的影响,以寻找皮埃蒙特牛与南阳本地黄牛适宜的级进杂交代数。结果表明,级进F2杂交个体比F1和F3更能适应当地夏季较为强烈的湿热气候,并保持优良的产肉性能,故杂交选育宜在F2代基础上进行。
本研究選擇12月齡皮南雜交(皮埃矇特牛×本地南暘牛)公牛F1、F2、F3各30頭,在7、8、9月份進行統一育肥試驗,探討夏季濕熱氣候對不同雜交後代生長髮育狀況的影響,以尋找皮埃矇特牛與南暘本地黃牛適宜的級進雜交代數。結果錶明,級進F2雜交箇體比F1和F3更能適應噹地夏季較為彊烈的濕熱氣候,併保持優良的產肉性能,故雜交選育宜在F2代基礎上進行。
본연구선택12월령피남잡교(피애몽특우×본지남양우)공우F1、F2、F3각30두,재7、8、9월빈진행통일육비시험,탐토하계습열기후대불동잡교후대생장발육상황적영향,이심조피애몽특우여남양본지황우괄의적급진잡교대수。결과표명,급진F2잡교개체비F1화F3경능괄응당지하계교위강렬적습열기후,병보지우량적산육성능,고잡교선육의재F2대기출상진행。
In order to research the effect of summer hot humid climate on the production per-formance of P×N crossbreeding cattle,and select suitable grading crossbreeding gencration,30 heads of F1,F2,F3 crossbreding P×N cattle were selected to fatten in June,July and August. The re-sults showed that cross breeding generation of F2 individual was more adapt to the local climate, and kept excellent production performance. So crossbreeding of P ×N cattle should be performed on the basis of F2 generation.