Leukebandara I. K., Premaratne S., Peiris B. L., Madugith T., Wimalasiri S.
This investigation was carried out to evaluate the effect of incorporation of 10% and 15% non- heat treated (NHT) and 10% and 15% heat treated (HT) Amaranth (Amaranthus hypochondriacus) seed powder to concentrate feed mixture consisting of rice (Oryza sativa) bran/polish and milling by products of black gram (Vigna mungo) fed to lactating Saanen goats (Capra hircus) on milk yield, composition, fatty acid profile and cholesterol content of milk produced by Saanen dairy goats over a period of 3 months. A randomized complete block design with four replicates was used to compare five treatment groups. Control diet consisted of natural grass together with rice bran/polish and milling by products of black gram, whereas Amaranth seed powder in different ratios as mentioned above was added to four experimental rations. All diets were formulated to meet NRC standards for Saanen dairy goats. Milk samples were collected before commencement of the trial and at every 2 week interval, after the commencement of the trial for a period of 3 months and analyzed for protein, fat, lactose and solid non-fat (SNF) using a Lacto scan milk analyzer standardized for goat milk. Milk fat extracted from the samples, by the modified Gerber method analyzed using a gas chromatography (GC) for fatty acid profile and cholesterol content, according to AOAC 996.06. Addition of Amaranth seed powder into different treatment diets did not significantly influence the fat, protein, lactose and SNF contents in goat milk (P>0.05). Milk yields were also not affected by different treatment diets; 10% and 15% non- heat treated (NHT) and 10% and 15% heat treated (HT) Amaranth seed powder (P>0.05). Inclusion of Amaranth seed powder into different treatment diets did not cause a significant change in the fatty acid profile and the cholesterol content of milk fat compared with the control. However, there were significantly high (P<0.05) conjugated linoleic acid (CLA) concentrations in milk fat of all treatment groups, as well as in the control group. Overall results indicate that, combination of feed ingredients in the diets, have favourable effects on milk fatty acid composition especially on CLA without negative effects on animal performance.
Amaranth seeds, Blood serum parameters, Body weight, Dairy goats
Cite this paper
Leukebandara I. K., Premaratne S., Peiris B. L., Madugith T., Wimalasiri S.. (2019) Study on Milk Parameters of Saanen Goats Fed with Diet Containing Amaranth (Amaranthus Hypochondriacus) Seeds. International Journal of Agricultural Science, 4, 45-56