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The effects of allowance and frequency of allocation of deferred herbage, and grass silage feed value, when offered to ewes in mid-gestation on ewe and lamb performance and subsequent herbage yield

Published online by Cambridge University Press:  01 June 2009

T. W. J. Keady  and
J. P. Hanrahan
T. W. J. Keady*
Affiliation:
Teagasc, Animal Production Research Centre, Athenry, Co. Galway, UK
J. P. Hanrahan
Affiliation:
Teagasc, Animal Production Research Centre, Athenry, Co. Galway, UK
*
E-mail: [email protected]
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Abstract

The effects of (i) herbage allowance, (ii) frequency of allocation and (iii) grass silage feed value on ewe and lamb performance were studied in mid-gestation ewes. Furthermore, the effects of (i) herbage allowance, (ii) frequency of allocation and (iii) grazing date and their interactions on subsequent herbage yield and feed value were also evaluated. Swards, which had a cut of silage removed on 6 September, received fertiliser nitrogen (34 kg/ha) for extended (deferred) grazing between 6 December and 1 February. Two grass silages differing in feed value were ensiled either precision chopped or in big bales from predominantly perennial ryegrass swards, respectively. In experiment 1, a completely randomised study involving 120 crossbred mid-gestation ewes (Belclare × Scottish Blackface) that had been mated in October was undertaken to evaluate the effects of extended grazed herbage allowance (1.0 and 1.8 kg dry matter (DM)/day), frequency of herbage allocation (daily and twice weekly) and grass silage feed value (low and medium) on ewe and subsequent lamb performance. The six diets were offered from days 63 to 120 of gestation. From day 120 of gestation to parturition all ewes were housed and offered the medium feed value silage ad libitum. All ewes received 19 kg concentrate prior to lambing. Increasing herbage allowance increased forage intake (P < 0.05), lamb birth weight (P < 0.01), weaning weight (P < 0.05) and growth rate from birth to weaning (P < 0.05), decreased herbage utilisation (P < 0.05) and tended to increase ewe condition score at lambing (P = 0.06). Frequency of herbage allocation or grass silage feed value did not alter (P > 0.05) ewe or subsequent lamb performance. In experiment 2, the effect of extended grazed herbage allowance (1.0 and 1.8 kg DM/ewe daily), frequency of allocation (daily and twice weekly) and grazing date (6 to 12 December, 27 December to 3 January and 17 to 23 January) on herbage yield at two harvest dates (27 April and 25 May) was examined in a split plot design study consisting of 72 plots. Delaying grazing date decreased herbage yield (P < 0.01) whilst delaying harvest date increased herbage yield (P < 0.05). Frequency of herbage allocation did not alter (P > 0.05) subsequent herbage yield. It is concluded that for ewes in mid-gestation 1.0 kg of low feed value silage DM had the same feed value, as determined by weaned lamb weight, as 1.3 kg herbage DM allowance. Each 1-day delay in grazing date reduced herbage DM yield by 54.2 kg/ha.

Keywords

deferred (extended) grazingherbage allowancefrequency of allocationherbage regrowthgrass silage
Type
Full Paper
Information
animal , Volume 3 , Issue 6 , June 2009 , pp. 879 - 890
Copyright
Copyright © The Animal Consortium 2009

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References

Agriculture and Food Research Council (AFRC) 1993. Energy and protein requirements of ruminants. CAB International, Wallingford, UK.Google Scholar
Bell, AW, Kennaugh, JM, Battaglia, FC, Meschia, G 1989. Uptake of amino acids and ammonia at mid-gestation by the foetal lamb. Quarterly Journal of Experimental Physiology 74, 635–643.CrossRefGoogle Scholar
Busteed, S, O’Riordan, EG, Collins, J 2000. The severity of soil damage and its effects on herbage production, sward characteristics and soil properties. Proceedings of the Agricultural Research Forum, Dublin, Ireland, pp. 27–28.Google Scholar
Carson, AF, Dawson, LER, Laidlaw, AS 2003. Effect of herbage allowance and concentrate feed level offered to ewes in late pregnancy on ewe and lamb performance. Proceedings of the British Society of Animal Science, York, UK, p. 63.CrossRefGoogle Scholar
Carson, AF, Dawson, LER, Irwin, D, Kilpatrick, DJ 2004. The effect of management systems at lambing and flock genetics on lamb output and labour requirements on lowland sheep farms. Animal Science 78, 439–450.CrossRefGoogle Scholar
Carton, OT, Brereton, AJ, O’Keeffe, WF, Keane, GP 1988. Effects of autumn closing date and grazing severity in a rotationally grazed sward during winter and spring. Irish Journal of Agricultural Research 27, 141–150.Google Scholar
Christley, RM, Morgan, KL, Parkin, TDH, French, NP 2003. Factors related to the risk of neonatal mortality, birth weight and serum immunoglobulin concentration in lambs in the UK. Preventive Veterinary Medicine 57, 209–226.CrossRefGoogle Scholar
Dulphy, JP, Dermarquilly, C 1972. Effect of chopping fineness of grass silages on the feeding behaviour of sheep. Annales de Zootechnie 21, 443–449.CrossRefGoogle Scholar
Fitzgerald, JJ 1996. Grass silage as a basic feed for store lambs 2. Effect of harvesting system and chop length of grass silage on silage intake and performance of store lambs. Grass and Forage Science 51, 378–388.CrossRefGoogle Scholar
Flanagan, S 1994. Extending the grazing season for sheep. Irish Grassland and Animal Production Association Journal 28, 97–102.Google Scholar
Flanagan, S 2003. Extended grazing by sheep as a substitute for silage and housing. Proceedings of the Agricultural Research Forum, Tullamore, Ireland, p. 79.Google Scholar
Givens, DI, Everington, JM, Adamson, AH 1990. The nutritive value of spring-grown herbage produced on farms throughout England and Wales over 4 years. III. The prediction of energy values from various laboratory measurements. Animal Feed Science and Technology 27, 185–196.CrossRefGoogle Scholar
Heasman, L, Clarke, L, Stephenson, TJ, Symond, ME 1999. The influence of maternal nutrient restriction in early to mid pregnancy on placental and foetal development in sheep. Proceedings of the Nutrition Society 58, 283–288.CrossRefGoogle ScholarPubMed
Holst, PJ, Allen, CJ, Gilmour, AR 1992. Effects of a restricted diet during mid pregnancy of ewes on uterine and foetal growth and lamb birth weight. Australian Journal of Agricultural Research 43, 315–324.CrossRefGoogle Scholar
Keady, TWJ 1991. Studies of the mode of action of a bacterial innoculant as a silage additive and an evaluation of its efficacy. PhD, Queen’s University, Belfast.CrossRefGoogle Scholar
Keady, TWJ 2000. Beyond the science: what the farmer looks for in the production of silage. In Biotechnology in the Feed Industry (ed. TP Lyons and KA Jacques), pp. 439–452. Proceedings of the Alltech’s 16th Annual Symposium, Lexington, KY, USA.Google Scholar
Keady, TWJ, Hanrahan, JP 2007a. An evaluation of grass allocation management to single and twin bearing ewes in late pregnancy on ewe and subsequent lamb performance. Proceedings of the Agricultural Research Forum, Tullamore, Ireland, p. 107.Google Scholar
Keady, TWJ, Hanrahan, JP 2007b. The effects of herbage allocation and concentrate supplementation on the performance of replacement ewe lambs offered extended grazed pastures. Proceedings of the British Society of Animal Science, Southport, UK, p. 140.CrossRefGoogle Scholar
Keady, TWJ, Hanrahan, JP 2009. Effects of shearing at housing, grass silage feed value and extended grazing herbage allowance on ewe and subsequent lamb performance. Animal 3, 143–151.CrossRefGoogle ScholarPubMed
Keady, TWJ, McCoy, MA 2001. The effects of nutrition of the dairy cow during the dry period on milk production and reproductive performance in the subsequent lactation. 74th Annual Report of the Agricultural Research Institute of Northern Ireland, pp. 40–55. ARINI, Hillsborough, Ireland.Google Scholar
Keady, TWJ, Murphy, JJ 1998. The effects of ensiling and supplementation with sucrose and fishmeal on forage intake and milk production of lactating dairy cows. Animal Science 66, 9–20.CrossRefGoogle Scholar
Keady, TWJ, O’Kiely, P 1998. An evaluation of potassium and nitrogen fertilization of grassland, and date of harvest, on fermentation, effluent production, dry-matter recovery and predicted feeding value of silage. Grass and Forage Science 53, 326–337.CrossRefGoogle Scholar
Keady, TWJ, Mayne, CS, Marsden, M 1998. The effects of concentrate energy source on silage intake and animal performance with lactating dairy cows offered a range of grass silages. Animal Science 66, 21–33.CrossRefGoogle Scholar
Keady, TWJ, Mayne, CS, Fitzpatrick, DA, Marsden, M 1999. The effects of energy source and level of digestible undegradable protein in concentrates on silage intake and performance of lactating dairy cows offered a range of grass silages. Animal Science 68, 763–777.CrossRefGoogle Scholar
Keady, TWJ, Mayne, CS, Fitzpatrick, DA 2000. Prediction of silage feeding value from the analysis of the herbage at ensiling and effects of nitrogen fertilizer, date of harvest and additive treatment on grass silage composition. Journal of Agricultural Science, Cambridge 134, 353–368.CrossRefGoogle Scholar
Keady, TWJ, Kilpatrick, CM, Cushnahan, A, Murphy, JA 2002. The cost of producing and feeding forages. Proceedings of the XIIIth International Silage Conference, Auchincruive, Scotland, pp. 322–323.Google Scholar
Keady, TWJ, Hanrahan, JP, Flanagan, S 2007. Effects of extended grazing during mid, late or throughout pregnancy, and winter shearing of housed ewes, on ewe and lamb performance. Irish Journal of Agricultural Research 46, 169–180.Google Scholar
Keady, TWJ, Hanrahan, JP, Flanagan, S 2009. An evaluation of two grassland based systems for mid season prime lamb production from two ewe genotypes. Irish Journal of Agriculture and Food Research (in press).CrossRefGoogle Scholar
Kelly, RW 1992. Nutrition and placental development. Proceedings of the Nutrition Society of Australia 17, 203–210.Google Scholar
Kirkpatrick, DE, Steen, RWJ 1999. Performance, carcass composition and energy retention of lambs offered two contrasting grass-based forages. Journal of Agricultural Science, Cambridge 132, 117–126.CrossRefGoogle Scholar
Lippert, M, Milne, JA, Russel, AJF 1983. Effect of mid pregnancy supplementation on hill-ewe performance. Animal Production 36, 543.Google Scholar
Lockhart, DAS, Herriott, JBD, Cunningham, JMM, Heddle, RG 1969. The effects of winter grazing on subsequent production from pasture. Grass and Forage Science 24, 146–150.CrossRefGoogle Scholar
Maher, J, Stakelum, G, Rath, M 2003. Effect of daily herbage allowance on the performance of spring-calving dairy cows. Irish Journal of Agricultural and Food Research 42, 229–241.Google Scholar
McCrabb, GJ, Egan, AR, Hosking, BJ 1992. Maternal undernutrition during mid-pregnancy in sheep: variable effects on placental growth. Journal of Agricultural Science, Cambridge 118, 127–132.CrossRefGoogle Scholar
Mellor, DJ 1983. Nutritional and placental determinants of foetal growth rate in sheep and consequently for the newborn lamb. British Veterinary Journal 139, 307–324.CrossRefGoogle ScholarPubMed
Mellor, DJ, Mitchell, B, Matheson, IC 1977. Reduction in lamb weight caused by pre-mating caruncletomy and mid-pregnancy placental ablation. Journal of Comparative Pathology 87, 629–633.CrossRefGoogle ScholarPubMed
Muñoz, C, Carson, AF, McCoy, MA, Dawson, LER, O’Connell, NE, Gordon, AW 2008. Nutritional status of adult ewes during early and mid pregnancy. 1. Effect of plane of nutrition on ewe reproduction and offspring performance up to weaning. Animal 2, 52–63.CrossRefGoogle Scholar
O’Donovan, M, Dillon, P, Reid, P, Rath, M, Stakelun, G 2002. A note on the effect of herbage mass at closing and autumn closing date on spring grass supply on commercial diary farms. Irish Journal of Agricultural and Food Research 41, 265–269.Google Scholar
Park, RS, Agnew, RE, Barnes, RJ 1999. The development of near infrared spectroscopy calibrations for undried grass silage and their transfer to another instrument using multiple and single sample standardisation. Journal of Near Infrared Spectroscopy 7, 117–131.CrossRefGoogle Scholar
Peyraud, JL, Comeron, EA, Wade, MH, Lemaire, G 1996. The effect of daily herbage allowance, herbage mass and animal factors upon herbage intake by grazing dairy cows. Annales de Zootechnie 45, 201–217.CrossRefGoogle Scholar
Porter, MG, Murray, RS 2001. The volatility of components of grass silage on oven drying and inter-relationships between dry-matter content estimated by different analytical methods. Grass and Forage Science 56, 405–411.CrossRefGoogle Scholar
Robinson, JJ 1977. The influence of maternal nutrition on ovine foetal growth. Proceedings of the Nutrition Society 36, 9–16.CrossRefGoogle ScholarPubMed
Robinson, JJ 1990. Nutrition over the winter period – the breeding female. In New Developments in Sheep Production (ed. CFR Slade and TLJ Lawrence). Occasional Publication no. 14, pp. 55–69. British Society of Animal Production, Edinburgh, UK.Google Scholar
Robinson, JJ, McDonald, I 1989. Ewe nutrition, foetal growth and development. In Reproduction, growth and nutrition in sheep (ed. OR Dyrmundsson and S Thorgeirsson), pp. 57–77. Agricultural Research Institute and Agricultural Society, Reykjavik, Iceland.Google Scholar
Robinson, JJ, Sinclair, KD, McEvoy, TG 1999. Nutritional effects on foetal growth. Animal Science 68, 315–331.CrossRefGoogle Scholar
Russel, AJF, Doney, JM, Gunn, RG 1969. Subjective assessment of body fat in live sheep. Journal of Agricultural Science, Cambridge 72, 451–454.CrossRefGoogle Scholar
Statistical Analysis Systems Institute (SAS) 2000. SAS/STAT Users Guide, version 8. SAS Institute Inc, Cary, NC, USA.Google Scholar
Steen, RWJ, Kilpatrick, DJ, Porter, ME 2002. Effects of the proportions of high or medium digestibility grass silage and concentrates in the diet of beef cattle on liveweight gain, carcass composition and fatty acid composition of muscle. Grass and Forage Science 57, 279–291.CrossRefGoogle Scholar
Vulich, SA, O’Riordan, EG, Hanrahan, JP 1991. Effect of litter size on herbage intake at pasture by ewes and their progeny. Animal Production 53, 191–197.Google Scholar