EFFECT OF MILKING FREQUENCY ON PRODUCTION PERFORMANCE AND PLASMA HORMONES LEVEL IN SAHIWAL COWS
Journal Title: International Journal of Agriculture Sciences - Year 2017, Vol 9, Issue 11
Abstract
The experiment was carried out on 88 lactating healthy Sahiwal cows.All the animals were maintained under loose housing system and machine milked during morning, noon and evening time. Milking attributes like milk let-down time, milking time and milking rate was determined in each season. Plasma cortisol level, IGF-1 and IgG of all the animals were estimated. The aliquots of milk samples from individual animal were composited and fat, protein, lactose, SNF and total solids were measured. Somatic cells present in the pooled milk samples from individual animals were estimated. The low yielder cows were milked twice daily and the high yielder cows were milked thrice daily.Milk flow rate(P<0.05) and Milk yield (P<0.01) were significantly higher in three times of milking as compared to two times of milking.Fat, TS and lactose % were significantly (P<0.01) higher in two times of milking as compared to three times of milking but SNF (P<0.01) and Protein (P<0.05) were significantly higher in three times of milking as compared to two times of milking. Milk let-down time, Milking time and Total milking time were numerically lower in two times of milking as compared to three times of milking. Somatic cell counts (×103 cell/ml) were also lower in two times of milking as compared to three times of milking. The Cortisol level was significantly(P<0.001) lower in two times as compared to three times of milking. Plasma concentration of IgG was also significantly lower (P<0.01) in two times as compared to three times of milking. The plasma level of IGF-1 was non-significantly variable but it was numerically lower (P>0.05) in three times as compared to two times of milking’s. So it can be concluded that milking frequency had significant impact on milk flow rate, milk yield, fat, Total solids, lactose, SNF and Protein. Plasma hormones like cortisol and IgG also varied significantly between two and three times of milking
Authors and Affiliations
POOJA TAMBOLI, AMIT CHAURASIYA, KULADIP PRAKASH SHINDE, ALOK KURIYAL
Keywords
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