11.產(chǎn)蛋雞日糧中鈣的含量一般為(       )

A.0.8％～1.0％                                         B.1％～2％

C.3％～4％                                               D.4％～5％

12.肉用仔雞適宜的飼養(yǎng)方式是(       )

A.厚墊料平養(yǎng)                                           B.鐵絲網(wǎng)上平養(yǎng)

C.立體籠養(yǎng)                                               D.無墊料平養(yǎng)

13.養(yǎng)豬生產(chǎn)中，經(jīng)常用作雜交終端父本的品種是(       )

A.長白豬                                                  B.大白豬

C.杜洛克                                                  D.漢普夏

14.工廠化養(yǎng)豬仔豬的斷奶日齡大多為(       )

A.7～14天                                               B.14～21天

C.28～35天                                              D.35～45天

15.奶牛的產(chǎn)犢間隔一般為(       )

A.60天                                                     B.280天

C.305天                                                   D.365天

16.我國奶牛飼養(yǎng)標(biāo)準(zhǔn)中規(guī)定，日糧粗纖維占干物質(zhì)的適宜含量是(       )

A.８％～１０％                                       B.１０％～１２％

C.１５％～２０％                                    D.２０％～２５％

17.家兔的妊娠期為(       )

A.10～11天                                              B.30～31天

C.60～61天                                              D.90～91天

18.進(jìn)行羔羊肥育時(shí)，一般要求母羊的比例大于(       )

A.50％                                                     B.60％

C.70％                                                      D.90％

19.細(xì)毛羊和半細(xì)毛羊剪毛時(shí)間一般為(       )

A.春季5～6月份                                      B.夏季7～8月份

C.秋季9月份                                           D.冬季11月份

20.湖羊是我國著名的(       )

A.粗毛羊品種                                           B.細(xì)毛羊品種

C.半細(xì)毛羊品種                                        D.羔皮羊品種