דיווח השתתפות בכנס


שם המרצה:ד"ר שאהר אלמכאוי, שותפים למחקר פרופ' אלן דגן וד"ר מיכאל קם

נושא הכנס

ANNUAL SCIENTIFIC SESSION WITH INTERNATIONAL PARTICIPATION "ANIMALBREEDING AND PATHOLOGY TODAY""

מקום הכנס:Timishoara' Romania

תאריך הכנס:2015-05-23

שם העבודה שהוצגה בכנס

DIETARY SELECTION IN SHEEP AND GOATS UNDER FREE-GRAZING AND PENNED CONDITIONS IN THE NEGEV, ISRAEL

תקציר העבודה


The foraging behaviour and dietary selection of free-ranging Awassi sheep and Negev goats when shepherded in the Negev Desert was determined. Measurements were made from the beginning of February, following winter rains and emergence of annual plants, to the end of March, after the herbaceous vegetation dried up. Since sheep are grazers and goats are intermediate feeders, we predicted that goats would browse more and consume proportionately more browse than sheep. These predictions were only partially supported. It was concluded that vegetation availability and foraging habits affected dietary selection. Both sheep and goats only grazed when herbaceous plants were abundantly available; differences between ruminant species were apparent when herbaceous plants became scarcer, at which time goats browsed more and consumed proportionately more browse than sheep. In a laboratory cafeteria trial, six fodder plants consisting of two leguminous trees, Acacia salicina and Acacia saligna, a leguminous shrub, Cassia sturtii and three halophytic shrubs, Atriplex canescens, Atriplex halimus and Atriplex nummularia were offered ad libitum to four fat-tailed Awassi sheep and four local Negev goats. Leguminous plants are characterized by high tannin contents and halophytes by high ash contents. We asked whether: (1) fodder selectivity by these small ruminants and (2) the ranking and proportionate feed intakes differed between sheep and goats. Total dry matter intakes were similar in sheep and goats and feed selection in goats tended to be positively correlated with that of sheep. Acacia saligna was the most preferred feed in both small ruminants and the two Acacia species comprised more than 86% and 70% of dietary intakes in goats and sheep, respectively. Key words: sheep, goat, free grazing

חוויות מעניינות


הופתעתי לגלות שחלק מהנוכחים בזמן הרצאתי היה כעשרה סטודנטים וסטודנטיות מהארץ שגילו ענין רב בהרצאה.

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