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<blockquote data-quote="Lucky_P" data-source="post: 1705400" data-attributes="member: 12607"><p>What FasterHorses said about testing your hay. If you don't, you have no idea about what you're feeding. Also... stage of gestation/lactation has a tremendous influence on nutritional needs... a fall-calving, lactating cow needs a whole lot more in the way of calories and protein than a 'dry' cow. </p><p>Last two years we had cows, the hay we bought in ended up testing in the 4-6% CP range; the producer was all excited about his ADF/NDF values... and just couldn't/wouldn't believe it when I told him his hay was crap... but, with a CP below 7%, there's not enough Nitrogen there to allow the rumen microflora to break down hay... it just sits there... DMI decreases, 'cause they can't process what they've already eaten... they start catabolizing body fat and muscle protein... they can't eat enough, even if it's available free-choice, to meet their nutritional needs.</p></blockquote><p></p>
[QUOTE="Lucky_P, post: 1705400, member: 12607"] What FasterHorses said about testing your hay. If you don't, you have no idea about what you're feeding. Also... stage of gestation/lactation has a tremendous influence on nutritional needs... a fall-calving, lactating cow needs a whole lot more in the way of calories and protein than a 'dry' cow. Last two years we had cows, the hay we bought in ended up testing in the 4-6% CP range; the producer was all excited about his ADF/NDF values... and just couldn't/wouldn't believe it when I told him his hay was crap... but, with a CP below 7%, there's not enough Nitrogen there to allow the rumen microflora to break down hay... it just sits there... DMI decreases, 'cause they can't process what they've already eaten... they start catabolizing body fat and muscle protein... they can't eat enough, even if it's available free-choice, to meet their nutritional needs. [/QUOTE]
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