دورية أكاديمية
Maximizing Lucerne (Medicago sativa) Pasture Intake of Dairy Cows: 1-the Effect of Pre-Grazing Pasture Height and Mixed Ration Level
| العنوان: | Maximizing Lucerne (Medicago sativa) Pasture Intake of Dairy Cows: 1-the Effect of Pre-Grazing Pasture Height and Mixed Ration Level |
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| المؤلفون: | Kieran A. D. Ison, Marcelo A. Benvenutti, David G. Mayer, Simon Quigley, David G. Barber |
| المصدر: | Animals, Vol 10, Iss 5, p 860 (2020) |
| بيانات النشر: | MDPI AG, 2020. |
| سنة النشر: | 2020 |
| المجموعة: | LCC:Veterinary medicine LCC:Zoology |
| مصطلحات موضوعية: | lucerne, grazing management, grazing dynamics, Medicago sativa, Veterinary medicine, SF600-1100, Zoology, QL1-991 |
| الوصف: | The effect of lucerne (Medicago sativa L.) pre-grazing pasture height on pasture intake and milk production was investigated in a sub-tropical partial mixed ration (PMR) dairy system in south-east Queensland, Australia. The experiment involved a 26-day adaptation period followed by an eight-day measurement period during April and May 2018. Twenty-four multiparous Holstein-Friesian dairy cows were offered a mixed ration at either 7 (low) or 14 (high) kg dry matter (DM)/cow/day and allocated pastures at pre-grazing heights ranging from 23 to 39 cm. The targeted pasture intake was 14 and 7 kg DM/cow/day for cows offered the low and high mixed ration allowances respectively, with a total intake target of 21 kg DM/cow/day. Pasture structure did not limit pasture intake as the all groups left at least 12% of the allocated area ungrazed, and therefore could selectively graze pasture. There was no significant difference in intake between mixed ration levels, however intake had a positive linear relationship with pre-grazing pasture height. For every one cm increase in pasture height, intake increased by 0.3 kg DM/cow/day. Using a grazing strategy that ensures the some pasture remains ungrazed and the pre-grazing height of lucerne is approximately 39 cm above ground level will maximise pasture intake in sub-tropical PMR dairy systems. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2076-2615 |
| Relation: | https://www.mdpi.com/2076-2615/10/5/860; https://doaj.org/toc/2076-2615 |
| DOI: | 10.3390/ani10050860 |
| URL الوصول: | https://doaj.org/article/dcc5d166e48145c1957dfb04a3e5fdaa |
| رقم الأكسشن: | edsdoj.5d166e48145c1957dfb04a3e5fdaa |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 20762615 |
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| DOI: | 10.3390/ani10050860 |