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首页> 外文期刊>Indian Journal of Animal Production and Management >COMPARISON OF LACTATION MODELS FOR SOLIDS NOT FAT AND TOTAL SOLIDS IN MILK OF MURRAH BUFFALOES
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COMPARISON OF LACTATION MODELS FOR SOLIDS NOT FAT AND TOTAL SOLIDS IN MILK OF MURRAH BUFFALOES

机译：MURRAH BUFFALOES牛奶中非脂肪固体和总固体泌乳模型的比较

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摘要

The average solids-not-fat (SNF) and total solids (TS) were 9.57 +- 0.03 and 17.12 +- 0.11 per cent,respectively in milk of Murraha buffaloes after first month of calving. Both these milk constituents decreasedwith advancement of lactation and attained their lowest percentage of 9.22 +- 0.03 and 16.33 +- 0.12,respectively during the fourth month of lactation. Thereafter as the lactation progressed, both SNF and TSstarted increasing slowly and reached 9.43 +- 0.05 and 17.97 +- 0.19 per cent, respectively during the tenthmonth of lactation. Therefore, the. observed changes in SNF and TS percentages in milk of buffaloesfollowed a trend opposite to lactatio'h curve of milk production. Five algebraic functions namely, quadratic,parabolic exponential, inverse polynomial, gamma type and product of two exponential functions werefitted to monthly least squares means of SNF and TS during a lactation after calving. The study revealedthat gamma type function was best representative lactation model for both the milk constituents. The fittedfunctions: Y_1 = 9.46421t ~(-0.0464) e ~(0.0107t) for solid not fat (SNF) and Y, =16.72381t~(-0.0859) e~(0.0266t) for total solids (TS)described the lactation trend having three phases, i.e., descending phase, trough phase and ascendingphase in milk of Murrah buffaloes.
机译：产犊第一个月后，Murraha水牛的平均无脂肪固体（SNF）和总固体（TS）分别为9.57±0.03和17.12±0.11％。在哺乳期的第四个月中，这两种牛奶成分均随着泌乳的增加而降低，分别达到最低的9.22±0.03和16.33±0.12。此后，随着泌乳的进行，SNF和TS均开始缓慢增加，在哺乳的第10个月分别达到9.43±0.05和17.97±0.19％。因此，。观察到水牛乳中SNF和TS百分比的变化遵循与乳汁生产的泌乳曲线相反的趋势。在产犊后哺乳期间，将五个代数函数，即二次，抛物线指数，反多项式，γ型和两个指数函数的乘积拟合为SNF和TS的每月最小二乘法。研究表明，γ型功能是两种牛奶成分的最佳代表泌乳模型。拟合函数：对于固体非脂肪（SNF），Y_1 = 9.46421t〜（-0.0464）e〜（0.0107t），对于总固体（TS），Y = 16.67381t〜（-0.0859）e〜（0.0266t）描述了穆拉水牛乳中具有三个阶段的泌乳趋势，即下降阶段，谷期阶段和上升阶段。

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