CURRENT STATUS OF POSTPARTUM ANESTRUS INTERVAL OF PERANAKAN ONGOLE CO\VS IN DRY LAND AREAS OF EAST JAVA IN RELATION TO FEED SUPPLY



M. Ali Yusran(1*), Teguh Purwanto(2), Bambang Suryanto(3), Sugiyane M.P.(4), Bambang Sudarmadi(5)

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(*) Corresponding Author

Abstract


Current status of postpartum anestrus (PPA) should be evaluated in order to decide
suitable supplement required. Feed supply in dry land areas of East Java was estimated with regards of PPA status of Peranakan Ongole (PO) cows. The observation was one year and locations were Blitar, Lumajang, and Malang areas (upland), and Tuban, Pasuruan, and Probolinggo areas (low land). Feed ingredients were similar in wet season (middle to the end of wet season) for either district. However, cereal straws become dominant during the dry season (middle dry season to early wet season). It showed that crude protein (CP) supply only met 56 to 65% of the CP required by lactating cows. Combination of lack of CP supply and late weaning practice might had contributed to a long PPA (more than 3 month) in cows.


Keywords


Dry land, Feed supply, Postpartum anestrus, PO cows

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