Iluphi uhlobo lwe-backfat olungcono kakhulu lwenkathi yokuzalanisa i-gilt?

Isimo somzimba wamafutha okuhlwanyela sihlobene eduze nokusebenza kwawo kokuzala, futhi i-backfat iyisibonakaliso esiqondile kakhulu sesimo somzimba wezingulube.Ezinye izifundo zibonise ukuthi ukusebenza kokuzala kwe-fetus yokuqala ye-gilt kubalulekile ekusebenzeni kokuzala kokulingana okulandelayo, kuyilapho i-backfat ye-gilt ngesikhathi sokuzala inomthelela omkhulu ekusebenzeni kokuzala kombungu wokuqala.

Ngokuthuthuka kwezinga elikhulu kanye nokumiswa kwezimboni zezingulube, amapulazi amakhulu ezingulube aqala ukusebenzisa i-backfat ukuze alawule ngokunembile i-backfat yengulube.Kulolu cwaningo, ukukalwa kwe-backfat ye-gilt kanye nokusebenza kukadoti wokuqala nowengane kubaliwe, ukuze kutholwe ububanzi obufanele be-backfat yenkathi yokuzalanisa kwe-gilt nokuhlinzeka ngesisekelo sethiyori sokuqondisa ukukhiqizwa kwe-gilt.

1 Izinto kanye Nezindlela

1.1 Umthombo wezingulube zokuhlola

Test in Shanghai pudong endaweni entsha ipulazi ingulube isikali, khetha kusukela September 2012 kuya September 2013 mayelana 340 amagremu of gilt (American pig inzalo) njengento ucwaningo, khetha in ingulube lapho estrus yesibili, futhi anqume backfat, futhi owokuqala udoti, ukukhiqizwa, isisindo sesidleke, isidleke, izibalo zedatha yokusebenza kosayizi obuthaka bokuzala (ngaphandle kwempilo ebuthaka, idatha engaphelele).

1.2 Imishini yokuhlola kanye nendlela yokunquma

Ukunqunywa kwenziwa kusetshenziswa ithuluzi eliphathekayo le-B-superdiagnostic eliphathekayo.Ngokusho kwe-GB10152-2009, ukunemba kokulinganisa kwethuluzi lokuxilonga le-ultrasound lohlobo lwe-B (uhlobo KS107BG) liyaqinisekiswa.Lapho ukala, yekela ingulube ime ngokuthula ngokwemvelo, bese ukhetha ugqinsi oluqondile oluqondile lwe-backfat (iphuzu le-P2) kumugqa ongemuva ophakathi no-5cm ukusuka ngemuva kwengulube njengendawo yokulinganisa, ukugwema ukuchezuka kwesilinganiso okubangelwa umnsalo ongemuva noma ukugoqeka okhalweni.

1.3 Izibalo zedatha

Idatha eluhlaza yaqale yacutshungulwa futhi yahlaziywa ngamathebula e-Excel, kwalandelwa i-ANOVA enesofthiwe ye-SPSS20.0, futhi yonke idatha yavezwa njengokuchezuka okuvamile ±.

2 Ukuhlaziywa kwemiphumela

Ithebula 1 libonisa ubudlelwano phakathi kogqinsi lwe-backfat kanye nokusebenza kukadoti wokuqala wama-gilts.Ngokuphathelene nosayizi kadoti, i-backfat ye-backfat engaba igremu e-P2 yayisuka ku-9 kuya ku-14 mm, nokusebenza okungcono kakhulu kukadoti kusuka ku-11 kuya ku-12 m m.Ngokombono kadoti ophilayo, i-backfat yayiphakathi kuka-10 kuya ku-13 mm, nokusebenza kahle kakhulu ku-12mm kanye ne-1 O litter ephilayo.35 Head.

Ngokombono wesisindo sesidleke esiphelele, i-backfat isindayo ebangeni lika-11 kuya ku-14 mm, futhi ukusebenza okuhle kakhulu kufinyelelwa ebangeni le-12 kuya ku-13 m m.Ezisindweni zikadoti, umehluko phakathi kwamaqembu e-backfat ubungabalulekile (P & gt; O.05), kodwa uma ukuqina kwe-backfat, kukhulu nesisindo sikadoti esimaphakathi.Ngokombono wesilinganiso sesisindo esibuthakathaka, lapho i-backfat ingaphakathi kuka-10 ~ 14mm, izinga lesisindo esibuthakathaka lingaphansi kwe-16, futhi liphansi kakhulu kunamanye amaqembu (P & lt; 0.05), okubonisa ukuthi i-backfat (9mm) futhi ukujiya kakhulu (15mm) kuzodala ukwanda okukhulu kwesisindo esibuthakathaka sezingulube (P & lt; O.05).

3 Ingxoxo

Isimo se-fat condition of gilt singenye yezinkomba ezibalulekile zokunquma ukuthi singamataniswa yini.Ucwaningo luye lwabonisa ukuthi izingulube ezingulube zincane kakhulu zizothinta kakhulu ukukhula okuvamile kwama-follicles kanye ne-ovulation, futhi kuthinte ngisho nokunamathiselwe kombungu esibelethweni, okuholela ekunciphiseni izinga lokukhwelana kanye nezinga lokukhulelwa;futhi ukuvundisa ngokweqile kuzoholela ekungasebenzini kahle kwe-endocrine kanye nezinga elincishisiwe le-basal metabolism, ngaleyo ndlela kuthinte i-estrus nokukhwelana kwezingulube.

Ngokuqhathanisa, uLuo Weixing wathola ukuthi izinkomba zokuzala zeqembu eliphakathi ngokuvamile zaziphakeme kuneqembu le-backfat eliwugqinsi, ngakho-ke kwakubaluleke kakhulu ukugcina isimo samafutha esisesilinganisweni lapho zizalela.Lapho u-Fangqin esebenzisa i-B ultrasound ukukala ama-gilts angu-100kg, wathola ukuthi i-backfat range elungisiwe phakathi kuka-11.OO~11.90mm yayiyiyokuqala (P & lt; 0.05).

Ngokusho kwemiphumela, inani lamaphuphu akhiqizwa ku-1 O kuya ku-14 mm, isisindo se-litter esiphelele, isisindo sekhanda likadoti kanye nezinga le-litter elibuthakathaka lalihle kakhulu, futhi ukusebenza kahle kokuzala kwatholakala ku-11 kuya ku-13 m m.Kodwa-ke, i-backfat encane (9mm) kanye nokujiya kakhulu (15mm) kuvame ukuholela ekwehleni kokusebenza kukadoti, isisindo sikadoti (ikhanda) kanye nokwanda kwezinga likadoti elibuthakathaka, okuholela ngokuqondile ekwehleni kokusebenza kokukhiqizwa kwama-gilts.

Ekukhiqizeni ukukhiqiza, kufanele sibambe ngesikhathi esifanele isimo se-backfat yama-gilts, futhi silungise ngesikhathi esifanele isimo samafutha ngokusho kwesimo samafutha angemuva.Ngaphambi kokuzalanisa, izingulube ezinsikazi ezikhuluphele kufanele zilawulwe ngesikhathi, ezingagcini nje ngokulondoloza izindleko zokudla kodwa futhi zithuthukise ukusebenza kokuzalanisa kwezingulube ezinsikazi;Ingulube engulube incane kufanele iqinise ukuphatha ukudla kanye nokudla ngesikhathi, futhi ingulube ekhuluphele ngokweqile isalungisa noma inenkinga yokukhula futhi izingulube ze-dysplasia kufanele ziqedwe ngokushesha ngangokunokwenzeka ukuze kuthuthukiswe ukusebenza kokukhiqiza kanye nenzuzo yokuzalanisa yonke ipulazi lezingulube.