LACTATION PERFORMANCE AND MILK COMPOSITION OF ATTAPPADY BLACK GOATS
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Date
2017
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College of Veterinary and animal Science,Mannuthy
Abstract
An experiment was conducted to assess the Lactation performance and milk composition of Attappady Black and Malabari goats. Thirty Attappady Black and ten Malabari goats were selected for this study. Meteorological data, Proximate composition of feed and fodder, Body weight, BCS, blood composition, milk yield, lactation length, milk composition, mineral composition and SCC were the parameters employed for the evaluation of the work. The meteorological data of air temperature was not significantly (P>0.05) differed between the location but relative humidity was significantly (p<0.01) higher in Mannuthy than the Palakkad region. The body Weight and BCS was recorded on experimental period and result showed that the body weight (P<0.05) and BCS (p<0.01) was differed significantly between the breeds. Body weight and BCS were higher in Malabari than Attappady Black goats. Blood samples were collected per animal on experimental period and analyzed for serum protein, cholesterol and triglycerides. Results showed that serum protein and triglycerides content were not influenced (P>0.05) by breeds. However, cholesterol content differed significantly (P<0.01) between the breeds. Serum protein and triglyceride content were higher in Malabari than Attappady Black goats but Attappady Black had relatively higher cholesterol content than Malabari goats. The does were hand milked daily at 8 am prior to feeding and yield determined for each animal at weekly interval. The milk samples were collected per animal on experimental period and analyzed for total solids, fat, crude protein, Lactose, ash and fat globule size. Results showed that fat, total solids, lactose, ash and fat globule size were not influenced (P>0.01) by breeds. However, protein (p<0.05), milk yield and lactation length (P<0.01) differed significantly between the small ruminant breeds. Total solids, fat, protein and lactose concentrations were higher in milk of Attappady Black than Malabari goats. But Malabari goat had relatively higher fat globule size, milk yield and lactation length than Attappady Black goats. The milk samples also used to analyses the minerals viz., calcium, phosphorus, sodium and potassium content of milk. On that, calcium (p<0.01) and sodium (p<0.05) content was differed significantly between the breeds but phosphorus and
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potassium content of milk was not significantly (p>0.05) differed between the breeds. Calcium and sodium concentrations in milk were significantly higher (P<0.05) for Malabari goats than Attappady Black goats. However, phosphorus and potassium levels in milk were higher in Attappady Black than Malabari goats. The SCC of milk were analysed per animal on experimental period and results showed that SCC were not influenced (P>0.05) by breeds. SCC content was higher in Malabari than Attappady Black goats. The overall correlation matrix of Attappady Black and Malabari goats indicated significant positive and negative (p<0.05-0.01) correlations between the experimental parameters.
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