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The effect of year, suckling, dry season and type of dam (ewe or gimmer) on milk production in East African Blackheaded sheep as measured by lamb growth

  • G. D. Sacker (a1) and J. C. M. Trail (a1)

Extract

1. The mean daily live weight gains of lambs were used to estimate the milk production of ewes and gimmers during the first 8 weeks of lactation. Records of 1178 lambings of East African Blackheaded sheep between the years 1952 and 1962 were available.

2. Gimmers had significantly lower production than second and subsequent lamb ewes. Ewes rearing twins had a significantly higher yield than ewes rearing singles. There appeared to be no difference in yield between ewes producing twins but rearing singles, and ewes rearing natural singles.

3. A long dry season with resultant lowered plane of nutrition significantly reduced the live-weight gain of lambs.

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References

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Dalton, D. C. (1962). Anim. Prod. 4, 269.
Doney, J. M. & Munro, J. (1962). Anim. Prod. 4, 215.
Duncan, D. B. (1955). Biometrics. 11, 1.
Munro, J. (1955). J. Agric. Sci. 46, 131.
Munro, J. (1962). Anim. Prod. 4, 203.
Owen, J. B. (1957). J. Agric. Sci. 48, 387.
Snedecor, G. W. (1956). Statistical Methods. 5th ed.Iowa.
Trail, J. C. M. & Sacker, G. D. (1966). J. Agric. Sci. 66, 87.

The effect of year, suckling, dry season and type of dam (ewe or gimmer) on milk production in East African Blackheaded sheep as measured by lamb growth

  • G. D. Sacker (a1) and J. C. M. Trail (a1)

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