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Titolo:
Effect of timing and duration of grazing of growing cattle in the West African Sahel on diet selection, faecal output, eating time, forage intake andlive-weight changes
Autore:
Ayantunde, AA; Fernandez-Rivera, S; Hiernaux, PHY; van Keulen, H; Udo, HMJ; Chanono, M;
Indirizzi:
Wageningen Inst Anim Sci, Anim Prod Syst Grp, NL-6700 AH Wageningen, Netherlands Wageningen Inst Anim Sci Wageningen Netherlands NL-6700 AH , Netherlands Int Livestock Res Inst, ICRISAT, Niamey, Niger Int Livestock Res Inst Niamey Niger ck Res Inst, ICRISAT, Niamey, Niger ID Lelystad, Inst Anim Sci & Hlth, Dept Anim Nutr, NL-8200 AB Lelystad, Netherlands ID Lelystad Lelystad Netherlands NL-8200 AB 200 AB Lelystad, Netherlands Plant Res Int, NL-6700 AA Wageningen, Netherlands Plant Res Int Wageningen Netherlands NL-6700 AA Wageningen, Netherlands Minist Agr & Elevage, Toukounoous, Niger Minist Agr & Elevage Toukounoous Niger gr & Elevage, Toukounoous, Niger
Titolo Testata:
ANIMAL SCIENCE
, volume: 72, anno: 2001,
parte:, 1
pagine: 117 - 128
SICI:
1357-7298(200102)72:<117:EOTADO>2.0.ZU;2-O
Fonte:
ISI
Lingua:
ENG
Soggetto:
LIVESTOCK; SYSTEMS;
Keywords:
cattle; food intake; food preferences; nocturnal activity; Sahel;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Udo, HMJ Wageningen Inst Anim Sci, Anim Prod Syst Grp, POB 338, NL-6700 AHWageningen, Netherlands Wageningen Inst Anim Sci POB 338 Wageningen Netherlands NL-6700 AH
Citazione:
A.A. Ayantunde et al., "Effect of timing and duration of grazing of growing cattle in the West African Sahel on diet selection, faecal output, eating time, forage intake andlive-weight changes", ANIM SCI, 72, 2001, pp. 117-128

Abstract

Sixty-four Azawak male weaned calves were allotted to eight treatments (T)in two trials to study the effect of timing (day or day-and-night) and duration of grazing on diet selection, faecal output, eating time, forage intake and weight changes. Grazing time during the day was 6 h for T 1, 2 and 3; 9 h for T 4, 5 and 6; and 12 h for T 7 and 8. Night grazing time was 0 h for T 1, 4 and 7; 3 h for T 2,5 and 8; and 6 h for T 3 and 6. The trials were conducted from July 1995 to May 1996 covering the wet (WS), early dry (EDS) and late dry (LDS) seasons. Eight oesophageally fistulated steers were used in a cross-over design to sample the diet selected by day-grazers (D1)and by day-and-night grazers during the day (D2) and at night (N2). Forageintake was determined from individual data on faecal output from all the calves and means of in vitro organic matter digestibility of extrusa of the fistulated steers. Water intake and eating time were measured in LDS. In WSthere were no differences (P > 0.05) in the quality of the diet (extrusa) selected for D1, D2 and N2. In LDS, crude protein content for D1 was lower than for D2 (73 v. 79 (s.e. 2) g/kg dry matter, P < 0.05). In all seasons, faecal output and forage intake increased with total duration of grazing. Total time spent eating increased linearly with increasing total time allowed for grazing. These results suggest that allowing additional grazing time during the night leads to increased forage intake and consequently providesan opportunity for better animal production, especially in the dry season.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/03/20 alle ore 19:31:15