J. Anim Sci.
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J. Anim Sci. 1982. 55:700-707.
© 1982 American Society of Animal Science
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Refeeding Value of Screened Bovine Manure Solids1

W. L. Johnson, Federico Rodriguez2, Ederlon Oliveira3, Thomaz Mercio4 and J. C. Wilk

North Carolina State University5, Raleigh 27650

Abstract

A high fiber residue called "screened manure solids" (SMS) was recovered from the manure flushings of a Jersey dairy herd and refed to steers and heifers in varied proportions in a mixed, complete diet. Screened manure solids contained 77 to 84% neutral detergent fiber (NDF), 29 to 35% cellulose, 10 to 14% lignin and 5 to 7% crude protein. Palatability of diets containing up to 50% of dry matter (DM) as SMS was satisfactory. Yearling dairy heifers (Jersey) fed diets with 50% of DM as SMS (ensiled) gained .42 ± .14 kg live weight/d; their reproductive performance and general health were satisfactory. Yearling Jersey steers were fed diets with 30% SMS, either fresh or ensiled; their DM intake averaged 2.4 to 2.6% of live weight, and their average daily gain was .85 to .89 kg. Dry matter and NDF digestibilities of diets with 20 to 40% SMS were 61 to 66% and 46 to 51%, respectively, with no difference in digestibility or voluntary intake between diets with fresh SMS and diets with ensiled SMS. Treatment of SMS with NaOH (at 7% of SMS DM) improved (P<.05) digestibilities of cellulose, hemicellulose, NDF, organic matter and total DM. The voluntary DM intake of SMS and control diets in digestibility trials was closely related to the concentration of nondigested NDF in the diet (r = -.9).

Footnotes

1 Paper No. 6883 of the Journal Ser. of the North Carolina Agr. Research Service, Raleigh. This research was supported in part by grants from the North Carolina Dairy Foundation.

2 Present address: INIP, Guadalajara, Mexico.

3 Present address: National Goat Research Center, EMBRAPA, C.P. 10, 62.100 Sobral, Ceará, Brazil.

4 Present address: Alfonso Cavalcanti 135-901, 90.000 Porto Alegre, Rio Grande do Sul, Brazil.

5 Dept. of Anim. Sci., P.O. Box 5127.






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Copyright © 1982 by the American Society of Animal Science.