EFFECT OF CALCIUM AND PHOSPHORUS SUPPLEMENTATION ON COMPOSITIONAL QUALITY OF MILK OF GANGATIRI COWS IN DIFFERENT SEASONS

摘要

The aim of this study was to investigate the effect of supplementation of calcium and phosphorus on chemical compositional quality of milk of Gangatiri cows in different seasons. Sixteen lactating Gangatiri cows from Livestock, SHUATS, Prayagraj werecategorized into group-T_0, group T_1, group T_2, and group T_3 , based on their supplementation of calcium and phosphorus on milk yield in different seasons. All cows were housed in tail to (ail bam under similar management conditions. All sanitary precautions were undertaken to produce clean milk by dry full hand method of milking. To do so different samples of raw milk were taken during winter, summer and rainy season. Contentof fat percentage, protein, lactose, ash, total solids (TS), solid not fat(SNF), water and acidity as well as specific gravity were examined. The results showed that fat percentage in winter and in rainy season protein, total solids and water percentage ofraw milk were significantly higher but in summer season there was no significant effect of supplementation of calcium and phosphorus.