摘要：A survey of producers was conducted to determine feeding practices on Louisiana dairy farms. A 38.5% response rate among dairy farmers was obtained. Declared herd size averaged 108 Holstein milking cows producing 15,613 lbs/cow/year. Most producers relied on pastures as primary forage source for the cows. Pastures were supplemented with concentrates offered twice daily. Most farmers formulated rations and reported knowing dietary protein, but less than 20% of the respondents acknowledged dietary P content. Producers and company nutritionists should be targeted by Extension programs intended to inform about P feeding recommendations and environmental effects of excess P.
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