Effect of dietary fat supplementation on growth performance and milk production in goats
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Date
2022-08
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Lala lajpat rai university Hisar
Abstract
A study was conducted to study the effect of dietary fat supplementation on growth
performance and milk production in goats. Two experiments (Experiment I was conducted with 30 kids
for a period of 90 days and Experiment II was continued for a period of 90 day on 30 lactating goats)
were carried out to assess the effects of dietary fat supplementation on growth performance and milk
production in goats. In experiment I, the experimental animals were randomly distributed into five
treatments having 6 animal in each treatment i.e. T1 (Basal ration), T2 (Basal ration + 20gm linseed
oil/animal/day), T3 (Basal ration + 20gm linseed oil bypass fat/animal/day), T4 (Basal ration + 20gm
rice bran oil/animal/day) and T5 (Basal ration + 20gm rice bran oil bypass fat/animal/day). The basal
ration was formulated as per ICAR (2013). In experiment II, the experimental lactating goats were
randomly distributed into five treatments having 6 animal in each treatment i.e. T1 (Basal ration), T2
(Basal ration + 30gm linseed oil/animal/day), T3 (Basal ration + 30gm linseed oil bypass
fat/animal/day), T4 (Basal ration + 30gm rice bran oil/animal/day) and T5 (Basal ration + 30gm rice bran
oil bypass fat/animal/day). The results revealed that the DMI was non significant (P<0.05) among
different supplemented group in both kids as well as in lactating goats. Nutrients intake (g/day) in terms
of DCP and TDN did not vary significantly between the treatments groups in both experiments. Average
body weight gain (kg) and average daily gain (ADG, g/d) were significantly (p<0.05) higher for
supplemented groups than control group in experiment I. ADG and FCR was significantly different
(P<0.05) and was found higher in T3 group and improved FCR in bypass fat supplemented group in
growing kids. DM and EE digestibility was significantly different (P<0.05) between control and fat
supplemented group in both experiments. Balance of nitrogen did not vary between treatment groups in
both experiments. There was no change in between haematological parameters under different dietary
treatment groups in both experiments. But serum lipid profile shows increased HDL content and lower
SFA content as compared to control group in both experiments. Milk yield was significantly different
(P<0.05) in experimental lactating goats and was found highest in bypass supplemented group (T3 and
T5). Milk lipid profile shows increased PUFA and Omega 3 content in linseed oil and linseed bypass
supplemented group as compared to control group. From the ongoing illustrations, it may be concluded
that supplementation of bypass fat prepared from linseed oil and rice bran significantly improved the
average body weight gain , FCR , milk yield and milk fatty acid profile as compared to the control group