Effect of concentrate, dried grass and dried white clover ratios on intake, digestibility and liveweight gain by early‐weaned lambs

Marsh, R.; Chestnutt, D. M. B.

doi:10.1111/j.1365-2494.1976.tb00779.x

Grass and Forage Science

1976

DOI: 10.1111/j.1365-2494.1976.tb00779.x

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Effect of concentrate, dried grass and dried white clover ratios on intake, digestibility and liveweight gain by early‐weaned lambs

R. Marsh¹,

D. M. B. Chestnutt²

Abstract: Early-weaned lambs were offered rations of conventional concentrate, dried grass and dried white clover pellets ad libitum for 52 days. In vivo OM digestibility coefficients of concentrate, grass and clover were 800, 534 and 666% respectively. Dry matter intake of dried grass was similar to that of concentrates but supported significantly lower (P<0001) daily gains (018 kg). Supplementation of dried grass with an equal proportion of dried clover significantly increased (i'<0 05) DM and DOM intake and daily gai… Show more

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1992

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Effect of sward surface height on the performance of ewes and Iambs continuously grazed on grass/clover and nitrogen‐fertilized grass swards

Chestnutt¹

1992

Grass and Forage Science

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In three successive years, sward height was maintained at 3, 5, 7 or 9 cm on grass swards receiving a total of 300 kg N ha " ' in six equal monthly dressings from April, and on grass/ clover swards receiving 50 kg N ha "' as a single dressing in early spring. From turnout in April until weaning in July, 64 ewes and their lambs (mean litter size 1 -5) were continuously grazed at the four sward surface heights on the two sward types. White clover content of grass/ clover swards remained low throughout the experiment ranging from 0-2 to 7-4% of the herbage mass. During the first two years, lamb gains averaged over sward types were 204, 260, 285 and 308 g d"' up to weaning, while in the third year gains were 238, 296, 296 and 260 g d"' on 3, 5, 7 and 9 cm swards respectively. Ewes lost Hve weight on 3 cm swards but apart from this sward height had little effect on performance. During the autumn, weaned lambs gained -27, 87, 147 and 167 g d " ' on 3, 5, 7 and 9 cm swards respectively. Sward type had only a small effect on the performance of lambs up to weaning but in the autumn, mean gains of weaned lambs were lower on grass/N swards (73 g d "') than on grass/clover swards (115 gd"'). Relative to 3 cm swards, carrying capacities of 5, 7 and 9 cm swards were 0-76, 0-57 and 0-52 respectively from turnout to Correspondence: D. M. B. Chestnut!, Agricultural Research Institute of Northern Ireland, Hillsborough, County Down, BT26 6DR, UK. t Also a member of staff of the Department of Agriculture for Northern Ireland and the Queen's University, Belfast. 70weaning and 0-66, 0-52 and 0-44 respectively during autumn. Grass/clover swards carried 0 • 67 of the ewes carried by grass/N swards from turnout to weaning and 0-51 of the live weight carried by grass/N swards during autumn.The reaction of the two sward types to sward height did not appear to differ but in the third year there was evidence of a reduction in white clover content when swards were grazed at 9 cm. The data suggest that lamb growth rates will increase as sward height increases up to 9 cm and the evidence for this was stronger with weaned lambs in autumn than with suckling lambs in spring.

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Effect of sward surface height on the performance of ewes and Iambs continuously grazed on grass/clover and nitrogen‐fertilized grass swards

Chestnutt¹

1992

Grass and Forage Science

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Effect of concentrate, dried grass and dried white clover ratios on intake, digestibility and liveweight gain by early‐weaned lambs

Cited by 1 publication

References 8 publications

Effect of sward surface height on the performance of ewes and Iambs continuously grazed on grass/clover and nitrogen‐fertilized grass swards

Effect of sward surface height on the performance of ewes and Iambs continuously grazed on grass/clover and nitrogen‐fertilized grass swards

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