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Angelo State University (2000)

Survival of mesquite seeds after consumption by three species of livestock

Kneuper, Charles Lloyd

Titre : Survival of mesquite seeds after consumption by three species of livestock

Auteur : Kneuper, Charles Lloyd

Université de soutenance : Angelo State University

Grade : Master of Science (MS) 2000

Résumé
Consumption of mesquite (Prosopis glandulosa Torr.) fruit by livestock appears to be an important component of seed dispersal. Three trials were conducted to determine preference for mesquite fruit by different species of livestock, intake in relation to fruit maturity, and seed survival. In the first study, cattle, sheep, and goats were offered immature (IM), mature off the tree (MT), or mature off the ground (MG) fruit to quantify intake of each stage. The second study assessed seed survival of digestion from different stages of development. Livestock consumed more mature fruit than immature. Sheep and goats consumed more fruit than cattle. As fruit matured, seed survival increased. Germination of seeds surviving digestion was not greater than seeds that experienced natural weathering. Cattle seed survival was greater (P ≤ 0.05) than sheep or goats. Cattle appear to serve as dispersal agents of mesquite while sheep and goats can act as predators.

Mots clés : PROSOPIS GLANDULOSA, LIVESTOCK, THREE, SURVIVAL, SPECIES, SEEDS MESQUITE, CONSUMPTION

Accès au document : Proquest Dissertations & Theses

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