犊牛的消化不良。五、青贮饲料和优质干草的影响。
Indigestion in young calves. V. The influence of grass silage and fine hay.
作者信息
Laksesvela B, Ommundsen A, Landsverk T
出版信息
Acta Vet Scand. 1978;19(4):543-8. doi: 10.1186/BF03547593.
In an experiment with 24 young calves, lasting 45 days, all were fed a high lactose milk replacer causing some diarrhoea. Eight calves received grass silage and 8 fine hay in addition, while 8 received no solid supplement to the milk replacer (NS). Somewhat more (P < 0.05) dry matter was ingested from silage than hay. Weight gain was similar on the 2 supplements and much greater (P < 0.001) than on NS. Both silage and fine hay reduced (P < 0.01) the frequency of diarrhoea, approximately to the same extent. Further, silage or hay gave higher pH (P = and 0.02, respectively) and less gram positive cocci and rods in the rumen fluid, better developed ruminai papillae and heavier (P < 0.01) empty reticulo-rumens than NS. Some calves fed silage had ulcers in the rumen, the same having occurred on fine hay in earlier experiments, but not in the present one. Althogether, the 2 roughages gave very similar results.
在一项持续45天、涉及24头小牛的实验中，所有小牛都被喂食了一种导致轻度腹泻的高乳糖代乳品。其中8头小牛除代乳品外还额外喂食了青贮饲料，8头小牛额外喂食了优质干草，另外8头小牛（无补充组，NS）除代乳品外未喂食固体补充饲料。青贮饲料的干物质摄入量略高于干草（P < 0.05）。两种补充饲料组的体重增加情况相似，且均显著高于无补充组（P < 0.001）。青贮饲料和优质干草均能降低腹泻频率（P < 0.01），且降低程度大致相同。此外，与无补充组相比，青贮饲料和干草分别使瘤胃液的pH值更高（P分别为 和0.02），革兰氏阳性球菌和杆菌数量更少，瘤胃乳头发育更好，瘤网胃空重更大（P < 0.01）。一些喂食青贮饲料的小牛瘤胃出现溃疡，在早期实验中，喂食优质干草的小牛也曾出现这种情况，但本次实验中未出现。总体而言，两种粗饲料的效果非常相似。
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