MILK PRODUCTION AND REPRODUCTION PERFORMANCE OF FRIESIEN HOLSTEIN (FH) ON RAINY AND DRY SEASON AROUND 0O LATITUDE KAMPAR REGENCY

The difference in season caused diffrent in climate condition between rainy and dry season. One of the differences is temperature and humidity that may affect forage and productivity of Friesien Holstein (FH). The purpose of study was to determine milk production and reproduction performance ofFH’s during rainy and dry seasons. The study was conducted from May to August 2014. The location of study was in Technical Implementation Unit(UPT) of Ruminant Breeding and Training in Kampar Regency Riau Province. Parameter observed in this study was rainfall of rainy and dryseason, Temperature Humidity Index (THI), forage quality and milk production of FH’s. Climatic conditions and the value of THI in UPT ofRuminant Breeding and Training in Kampar Regency Riau Province during rainy season was better than dry season although FH those were reared inUPT suffered from heat stress. Forage quality during rainy season was better than dry season. Percentage of lactation was better in the rainyseason, while in the dry season was likely occurrence of reproductive problems as a result of climatic conditions and Temperature Humidity Index (THI) were unfavorable for the cows. Milk production in rainy season was not significantly different compare with dry season.

کلیدواژه ها:

Season ، Forage ، Friesien Holstein ، Reproduction and Milk Production