GUNOJIN, gusolai bori nakhust bordorshudaro guyand. Sinnu soli G. vobasta ba khususiyathoi zoti, inkishofi fardi va maqsadhoi dar khojagi istifodabarii onho gunogun meshavad. Gusolahoi solimro az 16— 18-mohagi baroi tajdidi poda istifoda mebarand. Muvofiqi bahisobgirii istehsoliyu zootekhniki davrai bordorii G. 278—285 ruz davom mekunad. G.-ro dar mohhoi avvali bordori yakjoya bo gusolaho nigoh doshta, 2—3-moh pesh az bachazoi ba podai modagovho meguzaronand. Tobiston bo govhoi jushoi dar charogoh, zimiston dar ogil nigoh medorand.
G.-po 7—10 ruz pesh az bachazoi ba shubai bachazoi meguzaronand. Voyai khuroki G.-po muvofiqi vazni zinda va davrai bordoriash tayyor mekunand. Vobasta ba sabzish va inkishofi janin talaboti F. ba moddahoi gizoi meafzoyad. Dar 1 vohidi khuroki F. 100 g (pesh az du mohi bachazoi 120 g) proteini hozim peshbini shudaast. Voyai khurok boyad talaboti ba moddahoi minerali, vitaminho, makhsusan ba vitaminhoi A, D, B doshtai F.-po purra qone gardonad.
Agar dar khuroki nabotii chorvo miqdori okhan, yod va kobalt kam boshad, ba voyai khuroki F. mikroelementhoi nomburdaro hamroh mekunand.