The combined effects of milking frequency and feeding level on milk quality and metabolic parameters from late lactation dairy goats

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Research Paper 01/06/2018
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The combined effects of milking frequency and feeding level on milk quality and metabolic parameters from late lactation dairy goats

Moussa Komara, Christine Duvaux-Ponter, Yahaya Karamoko, Pierre Guy Marnet, Sylvie Giger- Reverdin
Int. J. Agron. Agri. Res.12( 6), 70-77, June 2018.
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The higher milk fat and protein content are some component that improve the price of the milk bought from dairy farmer in some countries. Alsothe reduction of the feed cost can reduce the cost of the milk production from dairy farm. Thus this study was conducted to investigated the combined effects of milking management (once-daily milking: ODM or twice-daily milking: TDM) and feeding level (ad libitum or adjusted) on milk quality and metabolic parameters from dairy goats in late lactation. This experiment was divided in two successive periods: period of milking frequency reduction (P1) and period of feed adjustment (P2).Milk yield and composition, plasma concentration of glucose, urea, β-hydroxybutyrate (BHB) and Non Esterified Fatty Acids (NEFA), milk fatty acids composition of the 40 dairy goats were determined. During P1, milk fat content decreased (-2.7 g/kg) while protein and lactose content were increased (+1.1 g/kg and +0.7 g/kg, respectively) by ODM compared to TDM. Also Plasma glucose concentration was increased (+0.03 g/kg) by ODM compared to TDM. During P2, only milk protein content was increased by ODM compared to TDM. Conversely, milk fat content and the sum of C18 were increased by feed adjustment. Glucose and BHB concentrations were reduced while NEFA concentration was higher in goats during P2. In conclusion this study demonstrated a lack of increase in milk fat content under ODM management but an increase in milk protein content under this milking management without major impairment of metabolic parameters from dairy goats.


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