A total of 1649milk samples from 172 Gir cows of Cattle Breeding Farm, Junagadh Agricultural University were collected with fortnight interval throughout the lactation for a period from 04-04-2014 to 10-10 -2015. The samples collected were analyzed for estimation of Fat %, SNF %, and Protein % and Sugar (Lactose). Total period was grouped in four seasons: Rainy, Winter, Spring and Summer. Total 11 stages were considered to for analysis. Effect of lactation order was considered as cows in lactation order from 01 to 10 parity were included in the study. All the four constituents, Fat, SNF, Protein and sugar of milk of Gir cows were found to be influenced by season in which milk is produced in lactation. The highest Fat content was observed in milk of animals that produced milk during in Rainy season ( %) and lowest in Summer season (). High climatic temperature during Summer season could cause decline in milk yield and fat percentage due to heat stress. Stage of lactation influenced only Fat content of milk of Gir Cows. While, SNF, Protein and Sugar content were not influenced by stage of lactation. | Effect of stage, season and parity of lactation on milk composition in Gir cattle
