Effect of crude protein content and amounts of protein nitrogen and non-protein nitrogen on utilization of diets of treated cereal straw by fattening lambs

Gonzalez, T.; Gonzalez, J.

Anales del Instituto Nacional de Investigaciones Agrarias, Ganadera 22: 13-21

1985


Accession: 001343373

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Abstract
Groups of 5 Mancha lambs on average 38 days old and 11.5 kg liveweight were given freely for 55 days diets based on wheat straw treated with sodium hydroxide 30, barley 59, soyabean oilmeal 7.5, 3.75, 7.5, 0 and 7.5, and urea 1.85, 1.75, 1.2, 1.65 and 0.6%, respectively. Crude protein content of the diets was 16.8, 15.5, 15.9, 14.7 and 14.3%. Mean daily gain was 209.9, 174.7, 213.9, 198.3 and 237.0 g; there was no significant difference among the groups. There was also no difference among carcass measurements except that carcass breadth was greater when 7.5% soyabean oilmeal was present in the diet.