Change in the effect of constant photoperiods on the rate of sexual maturation in modern genotypes of domestic pullet

British Poultry Science

Volumn 46, Issue 5, 2005, Pages 584-586

  Lewis, P D ^a,c   Morris, T R ^b  

^a UNIVERSITY OF KWAZULU NATAL   (South Africa)

^b UNIVERSITY OF READING   (United Kingdom)

^c NONE   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

ANIMAL; ANIMAL HUSBANDRY; ARTICLE; CHICKEN; FEMALE; GENETICS; GENOTYPE; PHOTOPERIODICITY; PHYSIOLOGY; RADIATION EXPOSURE; RETROSPECTIVE STUDY; SEXUAL MATURATION; TIME;

ANIMAL HUSBANDRY; ANIMALS; CHICKENS; FEMALE; GENOTYPE; PHOTOPERIOD; RETROSPECTIVE STUDIES; SEXUAL MATURATION; TIME FACTORS;

EID: 28444497062     PISSN: 00071668     EISSN: 14661799     Source Type: Journal    
DOI: 10.1080/00071660500255141     Document Type: Article

References (8)

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2. GOUS, R.M. & MORRIS, T.R. (2001) The influence of pelleted feed on the response of growing pullets to photoperiods of less than ten hours. British Poultry Science, 42: 203-206.
3. HAVENSTEIN, G.B., FERKET, P.R., SCHEIDELER, S.E. & LARSON, B.T. (1994) Growth, liveability, and feed conversion of 1957 vs 1991 broilers when fed 'typical' 1957 and 1991 diets. Poultry Science, 73: 1785-1794.
4. LEWIS, P.D., PERRY, G.C. & MORRIS, T.R. (1997) Responses of immature pullets to repeated cycles of gradual increases and abrupt decreases in photoperiod. British Poultry Science, 38: 611-613.
5. LEWIS, P.D., MORRIS, T.R. & PERRY, G.C. (1998a) A model for the effect of constant photoperiods on the rate of sexual maturation in pullets. British Poultry Science, 39: 147-151.
6. LEWIS, P.D., PERRY, G.C., MORRIS, T.R., DOUTHWAITE, J.A. & BENTLEY, G.E. (1998b) Effect of constant and of changing photoperiod on plasma LH and FSH concentrations and age at first egg in layer strains of domestic pullets. British Poultry Science, 39: 662-670.
7. LEWIS, P.D., MORRIS, T.R. & PERRY, G.C. (2002) A model for predicting the age at sexual maturity for growing pullets of layer strains given a single change in photoperiod. Journal of Agricultural Science, Cambridge, 138: 441-458.
8. MORRIS, T.R. (1967) Light requirements of the fowl, in: T.C. CARTER (Ed.) Environmental Control in Poultry Production, pp. 15-39 (Edinburgh, Oliver & Boyd).