A test of usefulness of a commercially available mill 'waste product' (AB-84) as feed for starving reindeer

摘要

Three Norwegian reindeer were first fed lichen ad libitum for 40 days, then they were starved for 3 days, and thereafter offered a commercially available mill ?waste product? (AB-84) ad libitum. One animal refused to eat AB-84 and was excluded. When eating lichen average daily dry matter intake was 1.1 ± 0.4 kg, while when eating AB-84 after the starvation period it averaged 1.1 kg at day 1, increasing to 2.5 kg at day 7. After 12 days daily dry matter intake varied between 2 and 4 kg. The rumen dry matter percentage was 16 when eating lichen, 6 after 2 days of starvation, and 17 after eating AB-84 for 5 days. Ruminal pH was 6.4 ± 0.3 when eating lichen, increasing to 7.4 after 3 days of starvation and dropping to an all time low of 6.1, 12 hours after refeeding. The viable bacterial count was 4.7 x 1010 ± 2.7, 5.5 x 108 ± 2.0 and 3.1 x 1010 ± 1.7/ml rumen fluid when the animals were eating lichen, had starved for 3 days and had been eating AB-84 for 5 days, respectively. The rumen ciliate protozoa numbered 17.1 x 105 ± 2.7/ml rumen fluid, when eating lichen, dropping to 4.3 x 105 ± 0.6./ml after 3 days of starvation. A further drop to 1.8 x 10s ± 0.5/ml was observed 1 day after refeeding, but the rumen ciliate number was normalized at 15 x 105 ± 1/ml already 8 days after refeeding. These results indicate that the mill ?waste product? (AB-84) is very well tolerated even by reindeer suffering from starvation. Since it is moreover commercially available at a favourable price it could be of interest to reindeer herders. In any case, it deserves to be tested under controlled conditions on a larger number of animals. En test p? anvendeligheten av kornavrens (AB-84) som for til utsultet rein. Abstract in Norwegian / Sammendrag: Tre norske rein ble gitt lav ad libitum i 40 dager, sultet i 3 dager og deretter gitt kornavrens (AB-84) ad libitum. Ett av dyrene nektet ? spise AB-84 og ble satt ut av fors?ket. Daglig foropptak i kg t?rrstoff var gjennomsnittlig 1.1 ± 0.4 kg under lavforing, mens opptaket av AB-84 var gjennomsnittlig 1.1 kg/dag den f?rste dagen etter sulteperioden. Den syvende dagen var opptaket 2.5 kg/dag, og varierte mellom 2 og 4 kg/dag etter 12 dager. Prosent t?rrstoff i vominnholdet var 16 under lavforing, 6 etter 2 dagers sult og 17 etter 5 dagers foring med AB-84. pH i vominnholdet ble m?lt til gjennomsnittlig 6.4 ± 0.3 under lavforing, 7.4 etter 3 dagers sult og falt bare til 6.1, som lavest m?lte verdi, etter 12 timers ad lib. tilgang p? AB-84. Antall levende bakterier pr. ml vomsaft var henholdsvis 4.7 x 1010 ± 2.7, 5.5 x 10" ± 2.0 og 3.1 x 1010 ± 1.7 n?r dyrene spiste lav, hadde sultet i tre dager og hadde spist AB-84 ad lib. i fem dager. Antall eiliater var 17.1 x 105 ± 2.7 pr. ml vomsaft n?r dyrene spiste lav og 4.3 x IO5 ± 0.6 etter tre dagers sult. Etter en dags ad lib. tilgang p? AB-84 var antallet 1.8 x 105 ± 0.5 pr. ml og etter fem dager 7.7 x 105 ± 1.8/ml. Disse resultatene indikerer at selv sultet rein tolererer kornavrens (AB-84) meget godt, og da foret er kommersielt tilgjengelig til en rimelig pris, kan det v?re av interesse for reindriftsut?vere. I alle tilfeller fortjener foret ? bli utpr?vet p? et st?rre antall dyr under kontrollerte betingelser. Koe viljaperkeen (AB-84) k?ytt?kelpoisuudesta rehuna n?lkiintyneelle porolle. Abstract in Finnish / Yhteenveto: Kolmea norjalaista poroa ruokittiin j?k?l?ll? ad libitum 40 p?iv??, annettiin n?hd? n?lk?? 3 p?iv?? ja sen j?lkeen ruokittiin taas viljaperkeell? (AB-84) ad libitum. Yksi el?imist? kielt?ytyi sy?m?st? AB-84 ja n?in ollen jouduttiin poistamaan kokeilusta. P?ivitt?inen rehuntarve kuiva-ainekilossa oli keskim??rin 1.1 ± 0,4 kg j?k?l?ruokinnassa, kun taas AB-84 ruokinta oli keskim??rin 1.1 kg/p?iv?ss? ensimm?isen? p?iv?n? n?lk?kauden j?lkeen. Seitsem?nten? rehunkulunki oli 2.5 kg p?iv?ss?, vaihdellen 2-4 kg p?iv?ss? 12 p?iv?n j?lkeen. Kuiva-ainesprosentti p?tsinsis?ll?ss? oli 16 j?k?l?ruokinnassa, 6 kahden p?iv?n n?l?n j?lkeen ja 17 viisip?iv?isen A