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| DOI: | 10.2134/agronj2005.0213 |
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| Web URL(s): | https://dl.sciencesocieties.org/publications/aj/pdfs/98/4/978
Last checked: 11/04/2016
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https://dl.sciencesocieties.org/publications/aj/articles/98/4/978
Last checked: 11/02/2016
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Barre, P.;
Emile, J.-C.;
Betin, M.;
Surault, F.;
Ghesquiére, M.;
Hazard, L. |
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| Author Affiliation: | Barre, Emile, Betin, Surault, Ghesquiére: National Institute of Agricultural Research-Unité de Génétique et d'Amélioration des Plantes Fourragéres, Lusignan, France; Hazard: National Institute of Agricultural Research-UMR1248, Agrosystémes Cultivés et Herbagers, France |
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| Title: | Morphological characteristics of perennial ryegress leaves that influence short-term intake in dairy cows |
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| Section: | Forages
Other records with the "Forages" Section
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| Source: | Agronomy Journal. Vol. 98, No. 4, July/August 2006, p. 978-985. |
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| Publishing Information: | Madison, WI: American Society of Agronomy |
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| # of Pages: | 8 |
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| Keywords: | TIC Keywords: Lolium perenne; Leaves; Grazing; Morphology; Tiller density; Dry weight; Nutrients; Leaf blade length
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| Abstract/Contents: | "In sustainable agriculture, adaptation of swards to grazing is a major issue for breeding forage grass cultivars. Understanding the relationships between sward traits and animal production under grazing could help to identify criteria for selection. Intake is the major limiting factor for animal production under grazing. In this paper, short-term intake rate by grazing dairy cows (Bos tTaurus) is compared between eight diploid perennial ryegrass (Lolium perenne L.) populations. Four replicates per population were measured over four periods (April and May 2001, and April and October 2002) in two experiments per period, that is, intermediate- and late-maturity groups. For each period, sward structure was characterized by tiller density, leaf blade and sheath lengths, and green leaf and total dry matter (DM) yield, while nutritive value was characterized by in vitro dry matter digestibility (IVDMD), percent of DM, N, water-soluble carbohydrate (WSC), and neutral-detergent fiber (NDF) contents. For the late-maturity populations, the population with the shortest leaves had a lower fresh matter intake rate (10.5 kg h-1) than the three others (12, 12, and 11.6 kg h-1, respectively). For the intermediate-maturity populations, differences in intake rates among populations were significant (P = 0.06) for all periods and were highly significant (P < 0.0004) in April 2002. In this period, 49% of the variation in fresh matter intake rate could be explained by blade length. In conclusion, differences in short-term intake rate between populations of diploid perennial ryegrass are highlighted. In both maturity groups, blade length appears to be an important factor explaining these differences." |
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| Language: | English |
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| References: | 40 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Barre, P., J.-C. Emile, F. Surault, M. Ghesquière, and L. Hazard. 2006. Morphological characteristics of perennial ryegress leaves that influence short-term intake in dairy cows. Agron. J. 98(4):p. 978-985. |
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| DOI: 10.2134/agronj2005.0213 |
| Web URL(s):
https://dl.sciencesocieties.org/publications/aj/pdfs/98/4/978
Last checked: 11/04/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/aj/articles/98/4/978
Last checked: 11/02/2016
Access conditions: Item is within a limited-access website |
| 
MSU catalog number: S 22 .A45 |
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