Indian Journal of Animal Research

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Indian Journal of Animal Research, volume 39 issue 2 (july to december 2005) : 144 - 146

EFACIENCY OF DIFFERENT ALGEBRAIC FUNCTIONS TO DESCRIBE LACTATION CURVE OF MILK LACTOSE IN MURRAH BUFFALOES

C.L. Suman, Shiv Prasad, Y.P. Singh, G.S. Bisht, Satya Pal
1ARIS Cell, Cqmputer Centre, Indian Veterinary Research Institute, Izatnagar - 243 122, India

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Cite article:- Suman C.L., Prasad Shiv, Singh Y.P., Bisht G.S., Pal Satya (2024). EFACIENCY OF DIFFERENT ALGEBRAIC FUNCTIONS TO DESCRIBE LACTATION CURVE OF MILK LACTOSE IN MURRAH BUFFALOES. Indian Journal of Animal Research. 39(2): 144 - 146. doi: .

ABSTRACT

The data on milk lactose percentage of 92 lactations of sixty Murrah buffaloes maintained at
Uvestock Production Research (Cattle and Buffaloes) Farm of the Indian Veterinary Research Institute, Izatnagar, from 1986 to 1990 were utilized for the present study. The average lactose percentage during first month of lactation was 4.76 ± 0.03, which increased continuously to attain a peak of 4.90 ± 0.03 during fourth month after calving. Thereafter, it started decreasing slowly and reached a lowest of 4.72 ± 0.04 during tenth month of lactation. The peak value of lactose percentage was significantly (P 0.05) higher than its values at first and tenth month of lactation. Ave algebraic functions, viz., quadratic, parabolic exponential, inverse polynomial, gamma type and product of two exponential functions were fitted to monthly least-~uares means. The study revealed that parabolic exponential function (VI = 4.7032 e (0.01481-0.00141 II was the best function closely followed by quadratic function (VI = 4.7072 + 0.0710 t - 0.0069 t2) to describe the trend of lactose in the milk of buffaloes during a lactation .e. ascending phase, peak phase and descending phase

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