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IJSTR >> Volume 3- Issue 7, July 2014 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



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

[Full Text]

 

AUTHOR(S)

Netsanet Beyero, V.Kapoor, B.S.Tewatia

 

KEYWORDS

Index Terms: Dairy cow, linseed oil, milk fatty acid, conjugated linoleic acid

 

ABSTRACT

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 fat/oil 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 (kg/d, 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 (kg/d) 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 (g/100g fat) increased by 137.34% in cows fed bypass fat as compared to control group (T1). Total CLA yield (mg/g fat) improved by 74.97% in cows fed linseed over T1. The total feeding cost was highest (USD 3.33/d) in T3, followed by (USD 2.76/d) T4, (USD 2.56/d) T2, and (USD 2.49/d) 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.

 

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