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Use of different leguminous seeds for lactating goats. Amino acid composition of the raw material and the rumen degradable fraction

Authors: Ramos Morales, Eva; Molina Alcaide, E.; Yáñez Ruiz, David R.; Fernández, J. R.; Sanz-Sampelayo, María Remedios;

Use of different leguminous seeds for lactating goats. Amino acid composition of the raw material and the rumen degradable fraction

Abstract

[FR] Dans cette ètude a ètè analysèe líaptitude de líusage de diverses lègumineuses en graines (lupin, feve, ers et vesce), dans líalimentation de la chevre. La dègradabilitè du N de chacune des sources protèiques a ètè rèalisèe au moyen de la technique du sachet en nylon. De la mime faàon on a dèterminè la composition en acides aminès des sources originales de protèines et des rèsidus contenus dans le sachet. Par rapport aux trois autres lègumineuses, les feves ont prèsentè une fraction supèrieure (P<0,05) de protèines rapidement dègradables. Le lupin, lui, face aux trois autres lègumineuses, a prèsentè un taux de dègradation plus èlevè (P<0,05). Les valeurs les plus faibles de dègradation effective ont correspondu aux ers. Le changement subi dans la composition en acides aminès du la fermentation de la rumination, dèpendait de la source protèique. Le profil amino-acidique des diffèrentes graines de lègumineuses se trouvait Ítre semblable avant la fermentation de la rumination. Au contraire, le profil correspondant aux fractions non dègradables par rumination, se trouvait Ítre relativement diffÈrent. En rèalisant une analyse factorielle multiples variantes, les diffèrentes lègumineuses se sont trouvèes classèes selon líintensitè du changement subi dans leur composition en acides aminès, de la maniere suivante : lupin, feve, ers et vesce.

[EN] The suitability of different leguminous seeds (lupine, beans, bitter vetch and vetch) for the nutrition of goats was investigated. The ruminal degradability of the N in each protein source was estimated using the nylon bag technique. The amino acid composition of the original protein sources and of the residues in the bags after ruminal incubation was also determined. The beans had more (P<0.05) of the quickly degradable fraction of crude protein than did the other three leguminous seeds. Lupine seeds had a higher (P<0.05) rate of degradation than did the other protein sources. The lowest value for effective degradability was observed for bitter vetch. The overall change in the amino acid profile due to ruminal fermentation depended on the protein source provided. The amino acid profile of the different leguminous seeds was among them, more similar before ruminal fermentation. However, the profile of their rumen undegradable protein fractions resulted very different. When a multivariate analysis was carried out, organization of the leguminous seeds in the order of the intensity of change, yielded the following: lupine, beans, bitter vetch and vetch.

Peer reviewed

Keywords

Profil amino-acidique, Chèvres, Leguminous seeds, Raw material

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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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