Evolution of the standing hay chemical composition in natural and improved Mediterranean pastures

Systèmes sylvopastoraux. Pour un environnement, une agriculture et une économie durables

Zaragoza : CIHEAM

Cahiers Options Méditerranéennes; n. 12 1995

pages 155-158

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--- Sulas L., Porqueddu C., Caredda S. Evolu tion of th e stan din g h ay ch emical composition in n atu ral an d improved Mediterran ean pastu res. Systèmes sylvopastoraux. Pour un environnement, une agriculture et une économie durables . Zaragoza : CIHEAM, 1995. p. 155-158 (Cahiers Options Méditerranéennes; n. 12)

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pastures3~

Sulas**, S. Caredda" and C. Porqueddu**

E. O0

Summary: sheep to the availability and

chemical composition of standing hay. available

in the (sod-seeding of +

in the one (dominated by the At the end of available

standing hay was 3.96 and 4.30 t in the analysis conducted on samples, collected the

vdue, content in the than in the

This due to the botanic composition. Although low absolute values of and

high of in the two in

instance c h d e content was two in the

of plants can have and digestibility and the animal selection capacity is

The high amount of standing hay in has impact in of animal

feed and in the risk of investigations in to

establish the digestibility of types of standing in with animal

scientists.,

l standing

l

in affected by late

.

to of

Cocks,. 1989). Standmg hay is a simple and cheap method of

it to the

low costs

the dry

in the South

to

The flat clay

7.5 with low N content. The climate

of

547 mm.

of the land was ploughed each of

two

~- ^.

100 N G d

an Lolium

rigidum Trfolium brachycalycinum &

N and 100 ha-1

in autumn to of the

to allow the was continued in on

field on

on

(EE) (UFL =

units) was also estimated ^(INRA, % of

2.1 1 and 3.50 t ha-1 in of is explained by

against A in

the 95% of the total

Haynaldia villosa, Bromus B. hordeaceus, Vulpia spp., Cynosurus echinatum, Avena barbuta, A. fatua and Hordeum murinum;

by fall in in

the 100% of the total

available in 1 5 : 1

to

10 to 35%. At the hay was

3.96 and 4.30 t ha-1

in

9th (9 in the last ten days.

table to advantage.

156

I

i

(40.7 vs 34.2) due to of content was less than 20%

5 to 15%.

in l), to o f

in in

be explained by of annual

of

was t h s

The in value of the

to the

one. in to

to of legume.

I

I

80

60 g

E

IL

40

26/05 09/06 23/06 07/07 21/07 04/08 18/08 01/09 15/09 29/09 o

of to

evidenced also the high amount of standing hay in and

to on

et al., 1990).

in et al., 1989).

of in both in

in the.

et al., 1975) ewe is able to

on et al. (1981),

of

of

80 and 60% in the

in is in

to establish the digestibility of

rigidum Gaudin) during senescence. Australian Journal 41,719-73 1.

Casu S., 198 1, Vahazioni. nel contenuto in e

della di taglio o da animali con fistola esofagea. Atti

del congresso del O.

Caredda S. e delle

L. lo

138-1 56.

Flamant J.C. et Cocks Ph., zone

des

and Purser in sheep fed on

stages of maturity. Australian Journal 1980. Alimentation des

1976. asciutta in ambiente mediterraneo. &vista di Agronomia, 1, 3-22.

Skerman P.J. 1990. series. no 23.

and Collins W.J., 1989. The intake and digestibility of

158