Estimation of Nitrogen Use Efficiency for Ryegrass-Fed Dairy Cows: Model Development Using Diet- and Animal-Based Proxy Measures
This study aimed to identify suitable predictors of nitrogen (N) use efficiency (NUE; milk N/N intake) for cows that differed in breeds and were fed with ryegrass pasture, using existing data from the scientific literature. Data from 16 studies were used to develop models based on the relationships...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-08-01
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| Series: | Dairy |
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| Online Access: | https://www.mdpi.com/2624-862X/2/3/35 |
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| author | Wumaierjiang Aizimu Omar Al-Marashdeh Simon Hodge Richard J. Dewhurst Ao Chen Guangyong Zhao Saranika Talukder Grant R. Edwards Long Cheng |
| author_facet | Wumaierjiang Aizimu Omar Al-Marashdeh Simon Hodge Richard J. Dewhurst Ao Chen Guangyong Zhao Saranika Talukder Grant R. Edwards Long Cheng |
| author_sort | Wumaierjiang Aizimu |
| collection | DOAJ |
| description | This study aimed to identify suitable predictors of nitrogen (N) use efficiency (NUE; milk N/N intake) for cows that differed in breeds and were fed with ryegrass pasture, using existing data from the scientific literature. Data from 16 studies were used to develop models based on the relationships between NUE and dietary and animal-based factors. Data from a further 10 studies were used for model validation. Milk urea N (MUN) and dietary water-soluble carbohydrate-to-crudeprotein ratio (WSC/CP) were the best and most practical animal- and diet-based proxies to predict NUE. The results indicate that it might be necessary to adopt separate models for different breeds when using WSC/CP to predict NUE but not when using MUN. |
| first_indexed | 2024-03-10T07:46:24Z |
| format | Article |
| id | doaj.art-617a39e2602a454c8fa439a3a15cf8cc |
| institution | Directory Open Access Journal |
| issn | 2624-862X |
| language | English |
| last_indexed | 2024-03-10T07:46:24Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Dairy |
| spelling | doaj.art-617a39e2602a454c8fa439a3a15cf8cc2023-11-22T12:36:58ZengMDPI AGDairy2624-862X2021-08-012343545110.3390/dairy2030035Estimation of Nitrogen Use Efficiency for Ryegrass-Fed Dairy Cows: Model Development Using Diet- and Animal-Based Proxy MeasuresWumaierjiang Aizimu0Omar Al-Marashdeh1Simon Hodge2Richard J. Dewhurst3Ao Chen4Guangyong Zhao5Saranika Talukder6Grant R. Edwards7Long Cheng8College of Animal Science, Tarim University, Alar 843300, Xinjiang, ChinaFaculty of Agriculture and Life Sciences, Lincoln University, P.O. Box 85084, Lincoln 7674, Canterbury, New ZealandSchool of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4, IrelandScotland’s Rural College, King’s Buildings, West Mains Road, Edinburgh EH9 3JG, UKFaculty of Agriculture and Life Sciences, Lincoln University, P.O. Box 85084, Lincoln 7674, Canterbury, New ZealandState Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, ChinaFaculty of Veterinary and Agricultural Science, University of Melbourne, Parkville, VIC 3010, AustraliaFaculty of Agriculture and Life Sciences, Lincoln University, P.O. Box 85084, Lincoln 7674, Canterbury, New ZealandFaculty of Veterinary and Agricultural Science, University of Melbourne, Dookie, VIC 3647, AustraliaThis study aimed to identify suitable predictors of nitrogen (N) use efficiency (NUE; milk N/N intake) for cows that differed in breeds and were fed with ryegrass pasture, using existing data from the scientific literature. Data from 16 studies were used to develop models based on the relationships between NUE and dietary and animal-based factors. Data from a further 10 studies were used for model validation. Milk urea N (MUN) and dietary water-soluble carbohydrate-to-crudeprotein ratio (WSC/CP) were the best and most practical animal- and diet-based proxies to predict NUE. The results indicate that it might be necessary to adopt separate models for different breeds when using WSC/CP to predict NUE but not when using MUN.https://www.mdpi.com/2624-862X/2/3/35crude proteinFriesianJerseymilk urea nitrogensoluble carbohydrates |
| spellingShingle | Wumaierjiang Aizimu Omar Al-Marashdeh Simon Hodge Richard J. Dewhurst Ao Chen Guangyong Zhao Saranika Talukder Grant R. Edwards Long Cheng Estimation of Nitrogen Use Efficiency for Ryegrass-Fed Dairy Cows: Model Development Using Diet- and Animal-Based Proxy Measures Dairy crude protein Friesian Jersey milk urea nitrogen soluble carbohydrates |
| title | Estimation of Nitrogen Use Efficiency for Ryegrass-Fed Dairy Cows: Model Development Using Diet- and Animal-Based Proxy Measures |
| title_full | Estimation of Nitrogen Use Efficiency for Ryegrass-Fed Dairy Cows: Model Development Using Diet- and Animal-Based Proxy Measures |
| title_fullStr | Estimation of Nitrogen Use Efficiency for Ryegrass-Fed Dairy Cows: Model Development Using Diet- and Animal-Based Proxy Measures |
| title_full_unstemmed | Estimation of Nitrogen Use Efficiency for Ryegrass-Fed Dairy Cows: Model Development Using Diet- and Animal-Based Proxy Measures |
| title_short | Estimation of Nitrogen Use Efficiency for Ryegrass-Fed Dairy Cows: Model Development Using Diet- and Animal-Based Proxy Measures |
| title_sort | estimation of nitrogen use efficiency for ryegrass fed dairy cows model development using diet and animal based proxy measures |
| topic | crude protein Friesian Jersey milk urea nitrogen soluble carbohydrates |
| url | https://www.mdpi.com/2624-862X/2/3/35 |
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