17-Title: Influence of lactation on some enzyme activity in Toggenberg goat

Authors: Ishfaq Hassan Bhat and Jonali Devi

Source: Ruminant Science (2014)-3(1):75-77.

How to cite this manuscript: Bhat Ishfaq Hassan and Devi Jonali (2014). Influence of lactation on some enzyme activity in Toggenberg goat. Ruminant Science 3(1):75-77.


The investigation was undertaken to study some enzyme activities during different stages in different lactations in Toggenberg goats. These included control group, consisting of dry goats and group I, II, III and IV containing goats in 1st, 2nd, 3rd and 4th lactation period. Further each lactation period was divided into early, mid and late stages. Blood samples were collected at one month interval in all the groups. Samples collected in first two months was considered as early stage, 3rd and 4th months are considered as mid and 5th and 6th months as late lactation stage. Samples were analyzed for different enzyme activities by using analytical kits. AST and ALT levels showed increasing trend starting from early to late lactation. Significantly higher (P<0.05) values were recorded in mid and late lactations as compared to early stage. However, ALP activities were significantly higher (P<0.05) at mid and late stages as compared to early stage in group I, whereas in other groups, the activities were significantly higher (P<0.05) at late lactation as compared to early stage. AST and ALP activities were found higher in third lactation as compared to the other groups of lactations, hence third lactation might be considered more stressful than other lactation periods.


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