Prediction of microbial protein supply in dairy cows based on odd and branched chain fatty acids in milk

B. Vlaeminck, V.A. Hindle, A.M. van Vuuren, D. Demeyer, V. Fievez

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Four Holstein-Friesian dairy cows (560-600 kg body weight, 67-92 days postpartum) were fed isoenergetic and isonitrogenous diets which differed in the amount of protected starch. Compared to the control ration (diet I), beet pulp was replaced by potato starch, maize meal or wheat meal (diets II, III and IV, respectively). Duodenal, urine and milk samples were collected during the final week of each experimental period for the determination of fatty acids (FA), duodenal diaminopimelic acid (DAPA), purines and urine allantoin. It was shown that differences in the amounts of protected starch induced significant changes in the microbial nitrogen (MN). Duodenal odd and branched chain fatty acids (OBCFA) ranged from 2.89-6.22 mg/g and was positively related to DAPA and purines. Milk OBCFA was not affected by diet and was positively related with DAPA and allantoin MN. These results show the potential of milk OBCFA excretion to predict the duodenal flow of MN in dairy cows
Original languageEnglish
Pages (from-to)321-324
JournalCommunications in agricultural and applied biological sciences
Volume68
Issue number3
Publication statusPublished - 2003

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Diaminopimelic Acid
Milk
Fatty Acids
Allantoin
Starch
Diet
Purines
Nitrogen
Meals
Proteins
Urine
Beta vulgaris
Solanum tuberosum
Postpartum Period
Triticum
Zea mays
Body Weight

Cite this

Vlaeminck, B. ; Hindle, V.A. ; van Vuuren, A.M. ; Demeyer, D. ; Fievez, V. / Prediction of microbial protein supply in dairy cows based on odd and branched chain fatty acids in milk. In: Communications in agricultural and applied biological sciences. 2003 ; Vol. 68, No. 3. pp. 321-324.
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abstract = "Four Holstein-Friesian dairy cows (560-600 kg body weight, 67-92 days postpartum) were fed isoenergetic and isonitrogenous diets which differed in the amount of protected starch. Compared to the control ration (diet I), beet pulp was replaced by potato starch, maize meal or wheat meal (diets II, III and IV, respectively). Duodenal, urine and milk samples were collected during the final week of each experimental period for the determination of fatty acids (FA), duodenal diaminopimelic acid (DAPA), purines and urine allantoin. It was shown that differences in the amounts of protected starch induced significant changes in the microbial nitrogen (MN). Duodenal odd and branched chain fatty acids (OBCFA) ranged from 2.89-6.22 mg/g and was positively related to DAPA and purines. Milk OBCFA was not affected by diet and was positively related with DAPA and allantoin MN. These results show the potential of milk OBCFA excretion to predict the duodenal flow of MN in dairy cows",
author = "B. Vlaeminck and V.A. Hindle and {van Vuuren}, A.M. and D. Demeyer and V. Fievez",
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Prediction of microbial protein supply in dairy cows based on odd and branched chain fatty acids in milk. / Vlaeminck, B.; Hindle, V.A.; van Vuuren, A.M.; Demeyer, D.; Fievez, V.

In: Communications in agricultural and applied biological sciences, Vol. 68, No. 3, 2003, p. 321-324.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Prediction of microbial protein supply in dairy cows based on odd and branched chain fatty acids in milk

AU - Vlaeminck, B.

AU - Hindle, V.A.

AU - van Vuuren, A.M.

AU - Demeyer, D.

AU - Fievez, V.

PY - 2003

Y1 - 2003

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AB - Four Holstein-Friesian dairy cows (560-600 kg body weight, 67-92 days postpartum) were fed isoenergetic and isonitrogenous diets which differed in the amount of protected starch. Compared to the control ration (diet I), beet pulp was replaced by potato starch, maize meal or wheat meal (diets II, III and IV, respectively). Duodenal, urine and milk samples were collected during the final week of each experimental period for the determination of fatty acids (FA), duodenal diaminopimelic acid (DAPA), purines and urine allantoin. It was shown that differences in the amounts of protected starch induced significant changes in the microbial nitrogen (MN). Duodenal odd and branched chain fatty acids (OBCFA) ranged from 2.89-6.22 mg/g and was positively related to DAPA and purines. Milk OBCFA was not affected by diet and was positively related with DAPA and allantoin MN. These results show the potential of milk OBCFA excretion to predict the duodenal flow of MN in dairy cows

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JO - Communications in agricultural and applied biological sciences

JF - Communications in agricultural and applied biological sciences

SN - 1379-1176

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