Received: 16-04-2020
Accepted: 25-05-2020
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Feed Intake, Digestibility and Methane Emission of Dry Cows as Affected by Supplementation of Cottonseed Oil
,
Tran Hiep
2
Keywords
Methane emission, dry cows, cottonseed oil
Abstract
The study aimed to evaluate the effect of supplementation of cottonseed oil on feed intake, digestibility and enteric methane emission of dry cows. A total of 24 dry cows at 2-6thlactation cycles were used in the experiments. The experimental animals were allocated according to a completely randomized design (CRD) tofour groupswithsix replications. The experimental diets comprised basic diet supplemented with cottonseed oil at levels of 0%; 1.5%; 3.0% and 4.5% of DM intake corresponding to the diet of control, KP1.5; KP3.0 and KP4.5, respectively. Results showed that the supplementationof cottonseed oil at 1.5%-3.0% improved total ME intake (from 17.6% to 18.1%) comparedto those fed control diet. The supplementation levels also reduced the total methane emission and methane emission intensity (from 18.1% to 19.2% methane/kg DMI). It may therefore be concluded that the supplementation of cottonseed oil at 1.5%-3.0%DMIhas a beneficial effect on feed intake, digestibility of dry cow witha reduction in CH4emission.
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