Effect Of Linseed Fed As Ground Seed Oil And Ca-Salt On Milk Yield And Its Fatty Acid Profile In Dairy Cows

Abstract Experiment was conducted on twenty-four crossbred dairy cows divided into four groups of six animals in each group. Cows were fed on iso-nitrogenous and iso-caloric ration consisting of concentrate mixture and roughage. The concentrate mixture of four treatment groups differed with regard to the source of fatoil and contained GNC T1 ground linseed T2 Ca-salt of linseed oil T3 and linseed oil T4. Roughages offered were green berseem forage and wheat straw. DMI kgd g W0.75kg or BW did not vary significantly among treatments. Digestibility of nutrients DM OM CP CF EE NFE NDF and ADF did not vary among treatments. Daily average milk yield and 4 FCM yield did not vary significantly among the treatments. Milk yield kgd ranged between 12.40 T3 and 13.38 T2. Percentage of milk protein fat lactose MUN Cholesterol TS and total ash were not affected by different treatments. TLCFA and PUFA were significantly P 0.05 higher in T3 than in T1 T2 and T4. Total PUFA yield g100g fat increased by 137.34 in cows fed bypass fat as compared to control group T1. Total CLA yield mgg fat improved by 74.97 in cows fed linseed over T1. The total feeding cost was highest USD 3.33d in T3 followed by USD 2.76d T4 USD 2.56d T2 and USD 2.49d T1. The feeding cost per g PUFA production reduced by 42 in cows fed bypass fat than control diet. The feeding cost per g CLA production reduced by 44 in cows fed linseed than control diet. In summary these results suggest that milk fatty acid profile is improved for better human health by feeding linseed products as shown by higher concentrations of PUFA including CLA recognized as being beneficial to reduce the incidence of cancer cardiovascular diseases and stimulate the immune system.