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A note on the effects of breed, stage of lactation and pregnancy status on milk composition of rabbits

  • GH. A. El-Sayiad (a1), A. A. M. Habeeb (a2) and A. M. El-Maghawry (a1)
Abstract

Forty-five New Zealand White and 35 Californian doe rabbits, 8 months old and in the third parity of their 1st year of production were used in this study. Thirty-five does were concurrently pregnant and lactating, the remaining 45 does were non-pregnant. Milk samples were collected in colostrum and at the 7th, 14th, 21st, 28th and 35th days of lactation. Neither breed nor pregnancy status affected the does milk composition except for total phosphorus which was significantly lower (P < 0·05) in the pregnant does' milk. However the major components of milk except lactose, were significantly affected by stage of lactation. Both moisture: total solids and calcium: phosphorus ratios were the same (2:1) throughout the lactation. The ratio between retinol concentration in colostrum and in the 5th week was about 10:1. Specific gravity was significantly (P < 0·05) correlated with protein, lactose (positive) and fat (negative).

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References
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Abdel-Fattah F. A. I. 1985. Studies on some factors affecting reproductive performance, milk production and preweaning growth in rabbits. M.Sc. thesis, Faculty of Agriculture, Cairo University.
Annino S. and Giese W. 1975. Clinical chemistry: principles and procedures. 4th ed. Little Brown Company, Boston.
Armstrong W. D. and Carr C. W. 1964. Estimation of serum total protein. 3rd ed. Physiological Chemistry Laboratory Directions. Burges, Minneapolis.
Association of Official Analytical Chemists. 1980. Official methods of analysis. 13th ed. Association of Official Analytical Chemists, Washington, DC.
British Standards Institution. 1951. Gerber methods for determination of fat in milk and milk products. B.S. 696, part 2.
Cowie A. T. 1969. Variations in the yield and composition of milk during lactation in the rabbit and the galactopoietic effect of prolactin. Journal of Endocrinology 44: 437450.
Coates M. E., Gregory M. E. and Thompson S. Y. 1964. The composition of rabbits milk. British journal of Nutrition 18: 583586.
Davies J. S., Widdowson E. M. and McCance R. A. 1964. The intake of milk and the retention of ils constituents while the new born rabbit doubles in weight. British Journal of Nutrition 18: 385392.
Food and Agriculture Organisation. 1986. Rabbit husbaudry, health and production (ed. Lebas F., Coudert, Rouvier and DeRouchambeau), Food and Agriculture Organization of the United Nations, Animal Production Series, No. 21, pp. 5859.
Hafez E. S. E. 1970. Reproduction and breeding techniques for laboratory animals. Lee and Febieger, Philadelphia.
Lebas F. 1971. Composition chimique du pait de Lepine. Evaluation au cours de la traite et en fonction du stade de lactation. Annales de Zootechnie 20: 185191.
Lebas F. 1972. Effect de la simultaneite de la lactation et de la gestation sur les performance laitieres chez la lapine. Annales de Zootechnie 21: 129131.
Ling E. R. 1956. A text book of dairy chemistry. Vol II Chapman and Hall, London.
Perrin D. R. 1958. The colorific value of milk of different species. Journal of Dairy Research 25: 215.
Statistical Analysis Systems Institute. 1986. SAS user's guide. Release 5.18. Statistical Analysis Systems Institute, Cary, NC.
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Animal Science
  • ISSN: 1357-7298
  • EISSN: 1748-748X
  • URL: /core/journals/animal-science
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