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Protein Supplementation Improves Performance of Lambs Fed Low-Quality Forage

Animals. 2019;10(1):51 DOI 10.3390/ani10010051


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Journal Title: Animals

ISSN: 2076-2615 (Online)

Publisher: MDPI AG

LCC Subject Category: Agriculture: Animal culture: Veterinary medicine | Science: Zoology

Country of publisher: Switzerland

Language of fulltext: English

Full-text formats available: PDF, HTML, XML



Belal S. Obeidat (Department of Animal Production, Faculty of Agriculture, Jordan University of Science and Technology, Irbid 22110, Jordan)

Hadil S. Subih (Department of Nutrition and Food Technology, Faculty of Agriculture, Jordan University of Science and Technology, Irbid 22110, Jordan)

Mysaa Ata (Department of Animal Production and Protection, Faculty of Agriculture, Jerash University, Jerash 26150, Jordan)


Blind peer review

Editorial Board

Instructions for authors

Time From Submission to Publication: 11 weeks


Abstract | Full Text

The objective was to investigate the effect of supplementing Awassi lambs fed low-quality forage with soybean meal. Twenty-one lambs (initial body weight (BW) of 26.1 &#177; 2.57 kg) were randomly assigned to the study diets, 1) the basal diet (forage mix; CON; n = 7); 2) the basal diet supplemented with either 125 (SBM125; n = 7); or 3) with 250 (SBM250; n = 7) SBM g/head/day. The forage mix was composed of 65% wheat straw and 35% alfalfa hay. The experimental diet was offered to the animals for 54 days. On day 40, four animals from each group were chosen to assess N balance and nutrient digestibility. The intake of crude protein (CP) and dry matter (DM) was the highest (<i>p</i> &lt; 0.016) in the SBM250 group, followed by the SBM125 group and the CON diet. Digestibility of DM and CP was higher (<i>p</i> &lt;0.05) for the SBM-containing diets than the CON diet. Final BW and average daily gain were greater (<i>p</i> &lt; 0.008) for lambs that consumed SBM-containing diets than for those that consumed the CON diet. In summary, the growth performance, forage utilization, and nutrient digestibility improved for lambs fed low-quality forage when supplemented with soybean meal.