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Relationships between secretory patterns of growth hormone, prolactin and body reserves and milk yield in dairy ewes under different photoperiod and feeding conditions

Published online by Cambridge University Press:  02 September 2010

F. Bocquier ,
G. Kann  and
M. Thériez
F. Bocquier
Affiliation:
1Laboratoire de la Production Ovine, INRA-CRZV Theix, 63122 Ceyrat, France
G. Kann
Affiliation:
2Laboratoire de Physiologie de la Lactation, INRA-CNRZ, 78350 Jouy-en-Josas, France
M. Thériez
Affiliation:
1Laboratoire de la Production Ovine, INRA-CRZV Theix, 63122 Ceyrat, France
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Abstract

Dairy ewes (Prealpes breed) were subjected to differential photoperiod treatments: either long (15·5 light (L): 8·5 dark (D) or short (8·5 L: 15·5 D). Treatments started 15 days before lambing and continued until the 5th week of lactation. After lambing the 22 ewes of each photoperiodic treatment were divided in two groups and fed on either a high or low plane (19 v. 10·5 MJ/day and 370 v. 237 g crude protein per day). Milk yield was not affected by photoperiod but significantly modified by feeding levels (1154 v. 789 ml/day). Protein content of the milk was reduced under long days (—4·9 g/1) compared with short days, while no effect was observed for fat content. Body chemical composition changes, estimated by the deuterium oxide (heavy water) dilution technique between weeks 1 and 4, were affected by both treatments, with a significant interaction between photoperiod and diet for body protein changes: under short days lipid and protein changes were closely related while under long days they were independent.

Blood samples were taken on day 23 of lactation from six ewes per group, every 30 min from 07.30 to 15.30 h for growth hormone (GH) and prolactin (PRL) measurements. The timing of GH and PRL pulses were different, but there was evidence that secretory patterns of each hormone were synchronized across ewes within the four treatments. Long photoperiod increased plasma PRL baseline rather than pulse amplitude, with no effect of diet. Undernutrition mainly increased GH pulse amplitude rather than baseline concentration, with no significant effects of photoperiod.

High spontaneous concentrations of GH were associated with body lipid mobilization (R2 = 0·51) and were also involved in the control of protein changes (R2 = 0·71). These results indicate that GH (and PRL) are involved in nutrient partitioning in the lactating ewe.

Keywords

body compositionewe lactationphotoperiodprolactinsomatotropin
Type
Research Article
Information
Animal Production , Volume 51 , Issue 1 , August 1990 , pp. 115 - 125
Copyright
Copyright © British Society of Animal Science 1990

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References

REFERENCES

Bass, E., Shani, J., Givant, Y., Yagil, R. and Sulman, F. G. 1974. The effect of pharmalogic releasers on lactation in sheep.Archives Internationales de Pharmacodynamie et de Therapie 211: 188–192.Google Scholar
Basset, J. M. and Madhill, D. 1974. The influence of maternal nutrition on plasma hormone and metabolite concentration of foetal lambs. Journal of Endocrinology 45: 465–477.Google Scholar
Bauman, D. E. and Currie, W. B. 1980. Partitioning nutrients during pregnancy and lactation: a review of mechanisms involving homeostasis and homeorhesis. Journal of Dairy Science 63: 1514†1529.Google Scholar
Bocquier, F. 1985. [Influence of photoperiod and temperature on endocrinal balance and performances of the pregnant and lactating ewe.] Thesis Docteur Ingenieur, Institut National Agronomique-Paris Grignon.Google Scholar
Bocquier, F. and Thériez, M. 1984. Prediction of ewe body composition at different physiological states. In In Vivo Measurement of Body Composition in Meat Animals (ed. Lister, D.), pp. 152–157. Elsevier, London.Google Scholar
Bocquier, F. and Thériez, M. 1989. Sheep. In Ruminant Nutrition: Recommended Allowances and Feed Tables (ed.Jarrige, R.), pp. 155–157. INRA-Paris, John Libey Eurotext, London.Google Scholar
Bocquier, F., Thériez, M., Kann, G. and Delouis, C. 1986. [Influence of photoperiod on net energy partition between milk production and body stores in dairy ewes.] Reproduction Nutrition Développement 26: 389–390.CrossRefGoogle Scholar
Bruhn, J. C. and Franke, A. A. 1977. Monthly variations in gross composition of California herd milks. Journal of Dairy Science 60: 695–700.Google Scholar
Chilliard, Y. 1988. [Role and mechanisms of action of growth hormone in lactating ruminant.] Reproduction Nutrition Développement 28: 39–59.Google Scholar
Chilliard, Y., Bauchart, D. and Barnouin, J. 1984. Determination of plasma non-esterified fatty acids in herbivores and man: a comparison of values obtained by manual or automatic chromatographic, titrimetric, colorimetric and enzymatic methods. Reproduction Nutrition Développement 24: 469–482.Google Scholar
Chilliard, Y., Robelin, J. and Remond, B. 1984. In vivo estimation of body lipid mobilization and reconstitution in dairy cattle. Canadian Journal of Animal Science 64: Suppi, pp. 236–237.Google Scholar
Chilliard, Y., Sauvant, D., Morand-Fehr, P. and Delouis, C. 1987. [Relationships between energy balance and metabolic activity of goat adipose tissue during the first part of lactation.] Reproduction Nutrition Développement 27: 307–308.Google Scholar
Cowan, R. T., Robinson, J. J., MacHattie, I. and Pennie, K. 1981. Effects of protein concentration in the diet on milk yield, change in body composition and the efficiency of utilization of body tissue for milk production in ewes. Animal Production 33: 111–120.Google Scholar
Davis, S. L., Ohlson, D. L., Klindt, J. and Afinson, M. S. 1977. Episodic growth hormone secretory patterns in sheep: relationship to gonadal steroid hormones. American Journal of Physiology 233: E 519–E 523.Google Scholar
Davis, S. L., Ohlson, D. L., Klindt, J. and Everson, D. O. 1979. Estimates of repeatability in the temporal patterns of secretion of growth hormone (GH), prolaction (PRL) and thyrotropin (TSH) in sheep. Journal of Animal Science 40: 724–728.Google Scholar
Driver, P. M. and Forbes, J. M. 1981. Episodic growth hormone secretion in sheep in relation to time of feeding, spontaneous meals and short term fasting. Journal of Physiology 317: 413–424.CrossRefGoogle ScholarPubMed
Eisemann, J. H., Bauman, D. E., Hogue, D. E. and Travis, H. F. 1984. Evaluation of a role for prolactin in growth and the photoperiod-induced growth response in sheep. Journal of Animal Science 59: 86–94.Google Scholar
Fleet, I. R., Fullerton, F. M., Heap, R. B., Mepham, T. B., Gluckman, P. D. and Hart, I. C. 1988. Cardiovascular and metabolic responses during growth hormone treatment of lactating sheep. Journal of Dairy Research 55: 479–485.CrossRefGoogle ScholarPubMed
Geenty, K. G. and Sykes, A. R. 1986. Effect of herbage allowance during pregnancy and lactation on feed intake, milk production, body composition and energy utilization of ewes at pasture. Journal of Agricultural Science, Cambridge 106: 351–367.Google Scholar
Hart, I. C. 1983. Endocrine control of nutrient partitioning in lactating ruminants. Proceedings of the Nutrition Society 42: 181–194.CrossRefGoogle ScholarPubMed
Hart, I. C., Bines, J. A. and Morant, S. V. 1979. Endocrine control of energy metabolism in the cow: correlations of hormones and metabolites in high and low yielding cows for stages of lactation. Journal of Dairy Science 62: 270–277.Google Scholar
Hart, I. C., Bines, J. A., Morant, S. V. and Ridley, J. L. 1978. Endocrine control of energy metabolism in the cow: comparison of the levels of hormones (prolactin, growth hormone, insulin and thyroxine) and metabolites in the plasma of high- or low- yielding cattle at various stages of lactation. Journal of Endocrinology 77: 333–345.CrossRefGoogle ScholarPubMed
Hart, I. C., Chadwick, P. M. E., James, S. and Simmonds, A. D. 1985. Effects of intravenous bovine growth hormone or human pancreatic growth hormone-releasing factor on milk production and plasma hormones and metabolites in sheep. Journal of Endocrinology 105: 189–196.Google Scholar
Hooley, R. D., Campbell, J. J. and Findlay, J. K. 1978. The importance of prolactin for the lactation in the ewe. Journal of Endocrinology 79: 301–310.Google Scholar
Hove, K. and Blom, A. K. 1976. Plasma insulin and growth hormone concentrations in pregnant sheep. I. Diurnal variations in mid- and late pregnancy. Acta Endocrinologica 82: 544–552.Google Scholar
Jansson, J. O., Albertsson-Wilkland, K., Eden, S., Thorngren, K. G. and Isaksson, O. 1982. Circumstancial evidence for a role of secretory pattern of growth hormone in control of body growth. Acta Endocrinologica 99: 24–30.Google Scholar
Kann, G. 1971. Dosage radioimmunologique de la prolactine plasmatique chez les ovins. Comptes Rendus Académie des Sciences, Paris 111: (D), 2934–2938.Google Scholar
Kann, G. 1976. Inhibition of prolactin secretion in the ewe by 2-bromo-alpha-ergocryptin during pregnancy or early lactation: effects on milk yield. Proceedings of the Vth International Congress on Endocrinology, Hamburg. p. 611 (Abstr.).Google Scholar
Kennaway, D. J., Sandford, L. M., Robertson, M. C. and Freisen, H. G. 1983. Pattern of progesteron, melatonin and prolactin secretion in ewes maintained in four different photoperiods. Journal of Endocrinology 97: 1480–1487.Google Scholar
Klindt, J., Jenkins, T. G. and Leymaster, K. A. 1985. Relationships between some estimates of growth hormones and prolactin secretion and rates of accretion of constituents of body gain in rams. Animal Production 41: 103–111.Google Scholar
McAtee, J. W. and Trenkle, A. 1971. Effect of feeding, fasting and infusion of energy substrates on plasma growth hormone levels in cattle. Journal of Animal Science 33: 612–616.Google Scholar
MacBridge, B. W., Burton, J. L. and Burton, J. H. 1988. The influence of bovine growth hormone (somatotropin) on animals and their products. Research and Development in Agriculture 5: 1–21.Google Scholar
MacDowell, G. H. and Hart, I. C. 1983. Galactopoietic effect of growth hormone in sheep. Annual Report, National Institute for Research in Dairying, 1982. p. 69.Google Scholar
Malven, P. V., Head, H. H. and Collier, R. J. 1987. Secretion and mammary gland uptake of prolactin in dairy cows during lactogenesis. Journal of Dairy Science 70: 2241–2253.Google Scholar
Merriam, G. R. and Watcher, K. W. 1982. Algorithms for the study of episodic hormone secretion. American Journal of Physiology 243: E 310–E 318.Google Scholar
Ortavant, R., Bocquier, F., Pelletier, J., Ravault, J. P., Thimonier, J. and Volland-Nail, P. 1988. Seasonality of reproduction in sheep and its control by photoperiod. Australian Journal of Biological Sciences 41: 69–85.Google Scholar
Peel, C. J. and Bauman, D. E. 1987. Somatotropin and lactation. Journal of Dairy Science 70: 474–486.Google Scholar
Pell, J. M., Johnsson, I. D., Pullar, R. A., Hart, I. C., Holder, A. T. and Aston, R. 1989. Potentation of growth hormone in sheep using monoclonal antibodies. Journal of Endocrinology 120: R 15–R 18.Google Scholar
Perier, A., Bocquier, F., Kann, G. and Martinet, J. 1986. [Influence of photoperiod and energy supply during pregnancy on prolactin, growth hormone and placental lactogen concentration and on subsequent milk production of dairy ewe.] Reproduction Nutrition Développement 26: 391–392.Google Scholar
Pethes, G., Bokori, J., Rudas, P., Frenyó, V. L. and Fekete, S. 1985. Thyroxine, triiodothyronine, reverse-triiodothyronine, and other physiological characteristics of periparturient cows fed restricted energy. Journal of Dairy Science 68: 1148–1154.Google Scholar
Ravault, J. P. and Ortavant, R. 1977. Light control of prolactin secretion in sheep. Evidence for a photoinducible phase during a diurnal rhythm. Annales de Biologie Animate, Biochimie et Biophysique 17: 459–473.Google Scholar
Rule, D. C., Beitz, D. C., Boer, G. De, Lyle, R. R., Trenkle, A. H. and Young, J. W. 1985. Changes in hormones and metabolite concentrations in plasma of steers during a prolonged fast. Journal of Animal Science 61: 868–875.Google Scholar
Stephenson, R. G. A., Hooley, R. D., Findlay, J. K. and Hopkins, P. S. 1980. Effects of heat stress on the lactation performances of ewes accustomed to tropical conditions and the total fluid intake of their lambs. Australian Journal of Biological Sciences 33: 449–456.Google Scholar
Tannenbaum, G. S. and Martin, J. B. 1976. Evidence for an endogenous ultradian rhythm governing growth hormone secretion in the rat. Endocrinology 98: 570–652.Google Scholar
Thimonier, J., Ravault, J. P. and Ortavant, R. 1978. Plasma prolactin variations and cyclic ovarian activity in ewes submitted to different light regimens. Annales de Biologie Animate, Biochimie et Biophysique 18: 1229–1235.Google Scholar
Tindal, J. S., Knags, G. S., Hart, I. C. and Blake, L. 1978. Release of growth hormone in lactating and non-lactating goat in relation to behaviour stage of sleep, electroencephalograms, environmental stimuli and levels of prolactin, glucose and free fatty acids in the circulation. Journal of Endocrinology 76: 333–346.Google Scholar
Trenkle, A. 1978. Relation of hormonal variations to nutritional studies and metabolism of ruminants. Journal of Dairy Science 61: 281–293.Google Scholar
Trenkle, A. 1989. Influence of feeding on growth hormone secretion and response to growth hormone-releasing factor in sheep. Journal of Nutrition 119: 61–65.Google Scholar
Vasilatos, R. and Wangsness, P. J. 1981. Diurnal variation in plasma insulin and growth hormone associated with two stages of variations in high producing dairy cows. Endocrinology 108: 304.Google Scholar
Wheaton, J. E., Al-Raheem, S. N., Massri, Y. G. and Marcek, J. M. 1986. Twenty-four-hour growth hormone profiles in Angus steers. Journal of Animal Science 62: 1267–1272.Google Scholar