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Effect of feeding level in late pregnancy and early lactation and fibre level in mid lactation on body mass, milk production and quality in Awassi ewes

Published online by Cambridge University Press:  18 August 2016

A. V. Goodchild ,
A. I. El-Awad  and
O. Gürsoy
A. V. Goodchild
Affiliation:
International Center for Agricultural Research in the Dry Areas (ICARDA), Aleppo, Syria
A. I. El-Awad
Affiliation:
International Center for Agricultural Research in the Dry Areas (ICARDA), Aleppo, Syria
O. Gürsoy
Affiliation:
Department of Animal Science, University of Çukurova, Adana, Turkey
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Abstract

In west Asia, it is traditional for sheep to gain body condition when low-cost native pastures are available and to mobilize reserves thus built up at other times. With diminishing shares of native pasture, crop by-products and food grains are increasing in sheep diets, and facilitate feeding for constant body condition.

In a 2 × 2 × 2 factorial experiment, 48 Awassi ewes were individually fed indoors, nursed single lambs for 42 days, and were hand-milked from day 29 after lambing. Dietary treatments were imposed at different times: level of feeding (i) in the last 24 days of pregnancy (Lconstv. Lmob), (ii) in days 18 to 60 after lambing (Lconstv. Lmob), and (iii) level of fibre in days 60 to 102 after lambing (Fhigh v. Flow). Rations Pconst, Lconst, Flow and Fhigh were calculated to maintain body condition. Fhigh provided the calculated maximum ingestible quantity of barley straw and Flow provided 0·08 kg barley straw per kg diet. Live weights (M) of ewes and lambs, milk yield and milk quality were recorded.

With Pconst, and Pmob (0·51 and 0·33 MJ metabolizable energy (ME) per kg M0.75 per day), M gains were 140 and 23 g/day (P < 0·001). Lamb birth mass and subsequent maternal milk yield were not affected. With Lconst and Lmob (0·81 and 0·61 MJ ME per kg M0.75 per day), M changes were -28 and -70 g/day (P < 0·001) and milk yields (calculated in part from lamb growth) were 1042 and 892 g/day (P < 0·01). Fhigh and Flow (385 and 170 g acid-detergent fibre per kg dry matter) were compared in a two-period change-over design experiment. Milk yields were similar (414 and 427 g/day), milk fat concentrations were 64·8 and 72·9 g/kg (P < 0·001) and milk fat yields were 26·5 and 31·1 g/day (P < 0·001) but solids-not-fat and protein yields were not affected.

There were benefits and costs in manipulating body reserves in Awassi sheep. M at lambing affects milk yield and body condition around mating is known to improve lambing rate. The existence of body reserves also allows body condition to be lost in late pregnancy and early lactation without affecting health or apparent welfare, which simplifies management of pregnant ewes, permits feeding of milk-fat-increasing high-fibre diets but the ME to maintain increased body reserves must not be ignored.

Keywords

energy requirementsewesfibre contentmilk composition
Type
Research Article
Information
Animal Science , Volume 68 , Issue 1 , February 1999 , pp. 231 - 241
Copyright
Copyright © British Society of Animal Science 1999

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References

Abdel-Rahman, K. M. and Mehaia, M. A. 1996. Influence of feeding different crude fiber levels on milk yield and milk composition of Najdi ewes. Small Ruminant Research 19: 137–141.Google Scholar
Agricultural and Food Research Council. 1993. Energy and protein requirements of ruminants. An advisory manual prepared by the AFRC Technical Committee on Responses to Nutrients. CAB International, Wallingford, UK.Google Scholar
Agricultural Research Council. 1980. The nutrient requirements of ruminant livestock. Technical review by an ARC working party. Commonwealth Agricultural Bureaux, Farnham Royal, UK.Google Scholar
Chilliard, Y., Doreau, M., Bocquier, F. and Lobley, G. E. 1995. Digestive and metabolic adaptations of ruminants to variations in food supply. Fourth international symposium on the nutrition of herbivores (ed. Journet, M. Grenet, E. Farce, M.-H. Thériez, M. and Demarquilly, C.), Clermont-Ferrand, France, 11-15 September 1995, pp. 329–360. INRA Editions, Paris.Google Scholar
Epstein, H. 1985. The Awassi sheep, with special reference to the improved dairy type. FAO animal production and health paper no. 57. Food and Agriculture Organization, Rome.Google Scholar
Everts, H. 1990. Feeding strategy during pregnancy for ewes with a large litter size. 1. Effect of quality and composition of concentrates on intake and reproductive performance. Netherlands Journal of Agricultural Science 38: 527–540.Google Scholar
Filo, S., Goodchild, A. V. and Treacher, T. T. 1994. Effects of body condition and level of nutrition before mating on fertility of Awassi ewes. Animal Production 58: 483–484 (abstr.).Google Scholar
Gingins, M., Bickel, H. and Schüren, A. 1980. Efficiency of energy utilization in undernourished and realimented sheep. Livestock Production Science 7: 465-471.Google Scholar
Goering, H. K. and Van Soest, P. J. 1970. Forage fiber analysis (apparatus, reagents, procedures and some applications). Agricultural handbook no. 379. Agricultural Research Service, Washington, DC.Google Scholar
Gonzalez, J. S., Robinson, J. J. and McHattie, I. 1985. The effect of level of feeding on the response of lactating ewes to dietary supplements of fish meal. Animal Production 40: 39–45.Google Scholar
Hamadeh, S. K., Shomo, F., Nordblom, N. and Goodchild, A. 1996. Small ruminant production in Lebanon’s BekaaValley. Small Ruminant Research 21: 1–4.Google Scholar
Jarrige, R., Demarquilly, C., Dulphy, J. P., Hoden, A., Robelin, J., Beranger, C., Geay, Y., Journet, M., Malterre, C., Micol, D. and Petit, M. 1986. The INRA ‘Till Unit” system for predicting the voluntary intake of forage-based diets in ruminants: a review. Journal of Animal Science 63: 1737–1758.Google Scholar
Johnson, C. L. 1986. Plane of nutrition. In Principles and practice of feeding dairy cows (ed. Broster, W. H. Phipps, R. H. and Johnson, C. L.). Technical bulletin no. 8, pp. 25–43. National Institute for Research in Dairying, Reading.Google Scholar
Kleemann, D. O., Walker, S. K., Walkley, J. R. W., Smith, D. H., Grimson, R. J., Stafford, J. E. and Seamark, R. F. 1988. The effect of nutrition during mid and late pregnancy on lamb birthweight and survival in F+Booroola × S.A. Merino ewes. Proceedings of the Australian Society of Animal Production 17: 428.Google Scholar
Louca, A., Mavrogenis, M. and Lawlor, M. J. 1974. Effect of plane of nutrition in late pregnancy on lamb birth weight and milk yield in early lactation of Chios and Awassi sheep. Animal Production 19: 341–349.Google Scholar
McDonald, I. M. 1981. A revised model for the estimation of protein degradability in the rumen. Journal of Agricultural Science, Cambridge 96: 251–252.Google Scholar
Meyer, J. H. and Clawson, W. J. 1964. Undernutrition and subsequent re-alimentation in rats and sheep. Journal of Animal Science 23: 214–224.Google Scholar
Ministry of Agriculture, Fisheries and Food. 1992. Feed composition. U.K. tables of feed composition and nutritive value for ruminants, 2nd edition. Chalcombe Publications, Canterbury, UK.Google Scholar
Orr, R. J., Treacher, T. T. and Mason, V. C. 1985. The effect of ammonia treatment on the intake of straw and hay when offered with rations of concentrates to ewes in late pregnancy. Animal Production 40: 101–109.Google Scholar
Ørskov, E. R. and McDonald, I. 1979. The estimation of protein degradability in the rumen from incubation measurements weighted according to the rate of passage. Journal of Agricultural Science, Cambridge 88: 539–552.Google Scholar
Osman, A. E., Cocks, P. S. and Bahhady, F. 1994. Response of Mediterranean grassland to phosphate and stocking rates: livestock production. Journal of Agricultural Science, Cambridge 123: 319–326.Google Scholar
Peart, J. N. 1970. The influence of live weight and body condition on the subsequent milk production of Blackface ewes following a period of undernourishment in early lactation. Journal of Agricultural Science, Cambridge 75: 459–469.Google Scholar
Robinson, J. J., Foster, W. H. and Forbes, T. J. 1969. The estimation of the milk yield of a ewe from body weight data on the suckling lamb. Journal of Agricultural Science, Cambridge 72: 103–107.Google Scholar
Statistical Analysis Systems Institute. 1990. SAS/STAT user’s guide, version 6, 4th edition. Statistical Analysis Systems Institute Inc., Cary, NC.Google Scholar
Sutton, J. D. 1986. Milk composition. In Principles and practice of feeding dairy cows (ed. Broster, W. H. Phipps, R. H. and Johnson, C. L.), National Institute for Research in Dairying, Reading, technical bulletin no. 8, pp. 203–218.Google Scholar
Taylor, St C. S. and Murray, J. I. 1991. Effect of feeding level, breed and milking potential on body tissues and organs of mature, non-lactating cows. Animal Production 53: 27–38.Google Scholar
Termanini, A., Goodchild, A. and Treacher, T. 1992. Particle size distribution and chemical composition of tibn . Annual report of the Pasture, Forage and Livestock Program for 1991, pp. 153–155. ICARDA, Aleppo, Syria.Google Scholar
Thomson, E. F. and Bahhady, F. 1987. Supplementary feeding of ewes. Annual report of the Pasture, Forage and Livestock Program for 1986, pp. 185–190. ICARDA, Aleppo, Syria.Google Scholar
Tilley, J. M. A and Terry, R. A. 1963. A two stage technique for in vitro digestion of forage crops. Journal of the British Grassland Society 18: 104–111.Google Scholar
Treacher, T. T. 1970. Effects of nutrition in late pregnancy on subsequent milk production in ewes. Animal Production 12: 23–36.Google Scholar
Treacher, T. T. 1971. Effects of nutrition in pregnancy and in lactation on milk yield in ewes. Animal Production 13: 493–501.Google Scholar
Treacher, T. T., Goodchild, A. V., Bahhady, F. and Filo, S. 1994. Improving performance of Awassi flocks by modifying feeding. In Crop and livestock improvement in Mashreq Region (ed. Haddad, N. and Tutwiler, R.), pp. 157–166. ICARDA, Aleppo, Syria.Google Scholar