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Influence of replacing corn silage with barley silage in the diets of buffalo cows on milk yield and quality.
MedLine Citation:
PMID:  20464483     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
A 150-day trial was carried out on 40 Italian Mediterranean buffalo cows that, immediately after calving, were equally divided into two homogeneous groups (M and O) based on the number of calving events and previous milk yield. The animals were fed (16 kg dry matter (DM)/head) two isoenergy/isoprotein diets (NEl: 6.39 MJ/kg DM; 15.4 CP% DM), composed of corn (diet M) or barley silage (diet O) concentrate, alfalfa hay, and a vitamin-mineral supplement. The fermentation characteristics of both silage diets were evaluated by an in vitro gas production technique, and their nutritional values were calculated as follows: NEl (MJ/kg DM) = 0.54 + 0.0959 GP + 0.0038 CP + 0.0001733 CP(2), where GP is the gas production after 24 h of incubation (ml/200 mg DM) and CP is the protein content of silage (g/kg DM). The nutritional values of the silages were slightly different (4.16 vs. 4.14 MJ/kg DM for M and O, respectively) likely due to the high content of hemicellulose in the O diet (22.0 vs. 16.9%). Average milk yield did not differ between the groups; instead, milk fat (8.39 vs. 9.06%; P < 0.01) and protein (4.41 vs. 4.60%; P < 0.01) levels were significantly higher in the O group. The results elicit great interest in southern Italy where corn cultivation is adversely affected by the high cost of irrigation.
Authors:
R Tudisco; S Calabrò; M Grossi; G Piccolo; A Guglielmelli; M I Cutrignelli; C Caiazzo; F Infascelli
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Veterinary research communications     Volume:  34 Suppl 1     ISSN:  1573-7446     ISO Abbreviation:  Vet. Res. Commun.     Publication Date:  2010 Jun 
Date Detail:
Created Date:  2010-06-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8100520     Medline TA:  Vet Res Commun     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  S193-6     Citation Subset:  IM    
Affiliation:
Dipartimento di Scienze Zootecniche e Ispezione degli alimenti, Facoltà di Medicina Veterinaria, Università degli Studi di Napoli Federico II, Napoli, Italy. tudisco@unina.it
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