The effect of rumen protected methionine (RPMet) on milk composition of lactating Cashmere Rayeni goat
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Abstract:
BACKGROUND: Methionine has been suggested as the firstlimitingamino acid for milk production in ruminants. It is importanthow to increase milk protein yield and milk fat in dairy ruminants.OBJECTIVES: This study was set to investigate the effect of rumenprotected methionine (RPMet) on milk composition of lactatingCashmere Rayeni goats. METHODS: 40 healthy singletonCashmere Rayeni goats about 3 to 4 years of age, at the first day oflactation, were randomly divided into 2 equal control andexperimental groups. The experimental group was supplementedwith 5 gr/day RPMet for 60 days. Milk samples of 2 groups weretaken on 30th and 60th days of the study. Milk protein, milk fat, milklactose, and milk Solids-not-Fat (SNF) were determined usingautomatic analyzer. The results were statistically evaluated withSPSS. RESULTS: The supplementation with RPMet did not effectall of the above mentioned parameters during the 60 days of theexperiment (p>0.05), except for the milk fat percentage of theexperimental group which showed significant increase after 60days (p
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Journal title
volume 8 issue 4
pages 269- 274
publication date 2015-01-01
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