Use of acacia (Acacia mangium) as protein source in dairy ration
2001
Sompong Sruamsiri(Maejo University, Chiang Mai (Thailand). Faculty of Agricultural Production. Department of Animal Technology)
Sixteen Holstein-Friesien cows at 7th month pregnancy were divided into four groups according to Completely Randomized Design to study the use of legume leaves (Acacia mangium) as protein source in dairy ration. They were then fed with Ruzi grass or urea treated ricestraw (ad libitum) together with 4 different concentrates, concentrate with 8 percent soybean meal (control), with 12.5 percent leucaena, with 12.5 percent and 25 percent Acacia mangium. Through out the 120 days of lactating period, a slightly decrease in dry matter feed intake (kg/h/d) was found by cows fed with concentrate contain 12.5 percent leucaena, 12.5 percent and 25 percent Acacia mangium respectively. Milk production 4 percent FCM decreased, according to concentrate feed from 7.82 to 6.97, 6.64 and 6.47 kg/h/d, respectively. Feed cost per 1 kg milk was 5.26 to 5.11, 5.20 and 5.44 Baht, whereas feed conversion ratio were slightly increased from 1.72 to 1.84, 1.91 and 1.98 respectively. Cow fed with concentrate plus leucaena had lowest feed cost per 1 kg milk and highest income per 1 kg milk. However total income after withdraw of feed cost was the highest by cows fed with concentrate plus soybean meal. Raw milk quality was not significant difference among the treatments.
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