Effect of season on the milk quality of Jamunapari goats under field and farm rearing condition

Abstract

The study was conducted at the central institute for research on goats, Makhdoom, Mathura; under the division nutrition feed resources and products technology. The Jakhrana breed milk samples were from villages of Mathura and Agra. A total of 479 milk samples were collected from field and farm rearing condition 106 summer (field 26 and farm 80), rainy 255 (field 18 and farm 237) and winter 118 (field 58 and farm 60) milk samples. The specific gravity of milk of Jamunapari goat under field and farm rearing conditions in summer, rainy and winner seasons it was 1.0292±0.0004 and 1.0302±0.00038, 1,0282±0.00038 and 1.0280±0.00038 and 1.0284±0.00039, and 1.0300±0.00039, respectively. The fat of milk of Jamunapari goat under field and farm rearing conditions for the aforesaid seasons was found to be 4.70±0.049 and 4.88±0.050, 4.94±0.046 and 5.10±0.047 and 4.80±0.043 and 4.98±0.048, respectively. The protein content of Jamunapari milk under field and farm rearing conditions in aforesaid seasons was 3.11±0.028 and 3.02±0.039, 3.23±0.026 and 3.10±0.036 and 3.32±0.026 and 3.15±0.032 per cent, respectively. The total solids per cent were found to be 13.17±0.040 and 13.10±0.034, 13.21±0.033 and 13.16±0.033 and 13.28±0.040 and 13.20±0.038, respectively. The statistical analysis revealed that solids-not-fat content was significantly greater in field rearing samples than farm rearing samples in all seasons. Seasons had a significant effect on specific gravity and fat content in Jamunapari goat breed under field or farm rearing conditions at 1% level of significance.