THE EFFECT OF DIFFERENT COMBINATIONS OF ENERGY AND PROTEIN ON THE OCCURRENCE OF ESTRUS, LENGTH OF THE ESTROUS PERIOD, AND TIME OF OVULATION IN BEEF HEIFERS
机构:
Univ Helsinki, Fac Vet Med, Dept Prod Anim Med, Saari Unit, FI-04920 Saarentaus, FinlandUniv Helsinki, Fac Vet Med, Dept Prod Anim Med, Saari Unit, FI-04920 Saarentaus, Finland
Rantala, M. H.
Katila, T.
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Univ Helsinki, Fac Vet Med, Dept Prod Anim Med, Saari Unit, FI-04920 Saarentaus, FinlandUniv Helsinki, Fac Vet Med, Dept Prod Anim Med, Saari Unit, FI-04920 Saarentaus, Finland
Katila, T.
Taponen, J.
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Univ Helsinki, Fac Vet Med, Dept Prod Anim Med, Saari Unit, FI-04920 Saarentaus, FinlandUniv Helsinki, Fac Vet Med, Dept Prod Anim Med, Saari Unit, FI-04920 Saarentaus, Finland
机构:
Univ Republica, Programa Posgrad, Fac Vet, Montevideo, Uruguay
Univ Republica, Fac Vet, Lab Endocrinol & Metab Anim, Montevideo, UruguayFdn IRAUy, Inst Reprod Anim Uruguay, Montevideo, Uruguay
de Brun, V
de la Mata, J.
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机构:
Inst Reprod Anim Cordoba, Cordoba, Argentina
Univ Nacl La Pampa, Fac Agron, Santa Rosa, La Pampa, ArgentinaFdn IRAUy, Inst Reprod Anim Uruguay, Montevideo, Uruguay