Concentrated feed capable of improving lactating performance of dairy cows and lowering nitrogen excretion
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A technology of concentrated feed and nitrogen excretion, which is applied in the field of feed in animal husbandry technology, can solve problems such as pollution and neglect, and achieve the effect of improving utilization rate, milk fat rate and milk protein rate
Inactive Publication Date: 2017-06-13
QINGDAO AGRI UNIV
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[0005] At present, in terms of dairy cattle concentrate feed preparation technology, the conventional practice is only focused on how to make up for the insufficient nutrition of roughage in terms of quantity and full price to meet the nutrition required by dairy cows, but basically ignores the dairy cows. How much impact will the excrement after absorption and absorption have on the environment, that is to say, the pollution caused by the nitrogen excretion of dairy cows to the environment is basically not considered in the preparation of concentrated feed for
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Embodiment 1
[0019] Select 20 Holstein dairy cows with good body condition, age, weight, average daily milk yield (30.5±2.5Kg), milk composition and lactation period (55±19.5d), and divide them into two groups, 10 in each group. Each head of the control group and the test group was fed 12Kg of basic concentrated feed every day, and each head of the test group was added with cinnamaldehyde 15g and 30g of rumen-passed methionine every day, and the control group did not add; the basic concentrated feed was mixed according to the following ratio and stirred evenly: Corn 48%, bran 21%, cottonseed meal 10%, soybean meal 16%, salt 1%, baking soda 1.1%, magnesium oxide 0.5%, stone powder 1%, trace element premix 1.1%, vitamin AD 3 Powder 0.3%.
[0020] The two groups were fed with exactly the same roughage: 5Kg of alfalfa hay, 28Kg of whole plant corn silage and 1Kg of dry apple pomace per head per day. The test results are shown in Table 1.
[0021] Table 1 Effects of cinnamaldehyde and rumen-p...
Embodiment 2
[0026] Select 30 Holstein dairy cows with good body condition, age, weight, average daily milk yield (28.6±2.2Kg), milk composition and lactation period (60±15.3d), and divide them into two groups, 15 in each group. Each head of the control group and the test group was fed 11Kg of basic concentrate feed every day, and each head of the test group added cinnamaldehyde 16g and rumen-passed methionine 25g every day, and the control group did not add; the base concentrate feed was mixed according to the following ratio and stirred evenly: Corn 47%, bran 20%, cottonseed meal 12%, soybean meal 16%, salt 1%, baking soda 1.2%, magnesium oxide 0.5%, stone powder 1%, trace element premix 1.1%, vitamin AD 3 Powder 0.2%.
[0027] The roughage fed to the two groups was exactly the same: 4Kg of alfalfa hay, 30Kg of whole plant corn silage and 1Kg of dry apple pomace were fed per head per day. The test results are shown in Table 2.
[0028] Table 2 Effects of cinnamaldehyde and rumen-passed...
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Abstract
The invention relates to concentrated feed capable of improving lactating performance of dairy cows and lowering nitrogen excretion. The concentrated feed is prepared from, by weight, 46%-50% of corn, 18%-24% of bran, 6%-12% of cottonseed meal, 11%-18% of bean pulp, 0.7%-1.2% of table salt, 1%-2% of baking soda, 0.5%-1% of magnesium oxide, 1.0%-2.0% of rock flour, 0.80%-1.2% of a trace mineral premix, 0.20%-0.30% of vitamin AD3 powder, 0.05%-0.15% of cinnamyl aldehyde and 0.1%-0.3% of rumen protected methionine. The dairy cows are fed with the above concentrated feed, lactating performance can be improved by performing nutrition regulation on the dairy cows, and the purpose of reducing environmental pollution by effectively reducing nitrogen excretion of the dairy cows can be achieved; the main method for improving the lactating performance and reducing the nitrogen excretion of the dairy cows is to add 0.05%-0.15% of cinnamyl aldehyde and 0.1%-0.3% of rumen protected methionine; utilization rate of the dairy cows on nitrogen and digestibility of the dairy cows on other nutrients are increased, the lactating performance is improved, and the nitrogen excretion is reduced, dual purposes of improving the lactating performance and reducing the nitrogen excretion of the dairy cows are achieved, and the concentrated feed can be widely applied to preparation of the concentrated feed for the dairy cows.
Description
technical field [0001] The invention belongs to the field of feed in animal husbandry technology, and in particular relates to a concentrated feed which can not only improve milk production performance of dairy cows but also reduce nitrogen excretion. Background technique [0002] With the rapid development of animal husbandry, the resulting environmental pollution is becoming more and more serious. According to reports, the annual excretion of livestock and poultry manure in the country has exceeded the sum of the discharge of industrial waste residue and urban domestic waste in the country. Important reasons that cannot be ignored; At present, the environmental pollution that attracts attention mainly includes nitrogen, phosphorus, methane, etc. The conversion rate (utilization rate) of nitrogen in dairy cows is low, and the conversion rate of nitrogen in the diet into nitrogen in milk is only 30% on average, and most of the remaining nitrogen is excreted through urine and...
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Application Information
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