家禽英文分析和总结.docx

Course:CommercialchickenproductionA Semaster:2004-2005-2 Time:2005,05,01

Explainingfollowingterms(4pointsperitem,totally20points)

Internallayers B.Uniformityofbodyweight

C.Skip-dayfeedingprogram D.Forcemolting E.Autosexing

Fillingtheblankswithanappropriatesentence,phrase,figureetc.

Pleaseindicatethenamesofthestructurepointedbythearrowsinfollowingfigure.

(1)

(1)

(2)

(5)

(3)

(4)

Figure:Structureoftheegg

Today’spoultryindustryischaracterizedby (6) and (7) .

Pleaselistthreepresent-daybrown-egglines: (8) , (9) , (10) .

Thechickenbreedsarecatalogedintodifferenttypesbasedontheirpurpose(s),theyare (11) , (12) , (13) and (14) .

Duringthedevelopmentofchickenembryo,therearefourextraembryonicmembranestohelptheembryogetthenutrientsfromeggs,storethewastageandprovideembryowithfreshair,theyare: (15) , (16) , (17) and (18) .

TheIncubationperiods(days)offollowingbirdsare:chicken(19) days,duck (20)days.

Makechoice(ThereisONEandonlyONEcorrectanswer.totally10points).

Themarketingliveweightofbroilerisnormallyabout:A.2.7~3.6kg;B.1.8~2.2kg;C.0.9~1.1kg;D.1.3~1.5kg

Inwhichportionofoviduct,theeggstaysforthelongesttime?

A.Infundibulum,B.Magnum,C.Isthmus,D.Uterus

Pulletsmaybetransferredtothelayingcages

A.atthe7thwkwhenbroodingperiodends. B.betweenageof14and18wks.

C.Atageof20-22wks D.Whenthereis50%pulletslayingeggs.

Thebodytemperatureofaday-oldchickisabout30Fbelowthatofanadult,butbyabout daysofagebodytemperatureis1060F,thesameastheadult.

A.2days,B.3days,C.4days,D.5days.

Whenthebirdsbroodedonfloor,theinitialtemperatureshouldbe32-350C,andthereducingrateoftemperatureshouldbe:

A.1-20C/wks,B.2-30C/wks,C.3-40C/wks,D.4-50C/wks

Whenrearingtheegg-typepullethatchedinAprilatnorthhemisphereinanopenhouses,whichofthef