Abarca, V. and Tapia, J. 1963. [Growth curve and correlations between weights at different ages in Duroc Jersey.] Boletin Production Animal 1: 63–76. [Animal Breeding Abstracts, 1966, 34: 82 (Abstr.).]
Agiang, E. A. and Egbunike, G. N. 1986. Postpubertal changes in the histomorphometric characteristics of the oviduct of the indigenous West African pig. Zuchthygiene 21: 121–124.
Chiboka, O. 1981. The effect of age at first mating on litter characteristics in the native Nigerian pig. Livestock Production Science 8: 155–159.
Cote, P. J. and Wangness, P. J. 1978. Rate, composition, and efficiency of growth in lean and obese pigs. Journal of Animal Science 47: 441–447.
De Alba, J. 1972. Productivity of native and exotic pig breeds in Latin America. World Animal Review 4: 25–28.
Endeley, H. N. L. 1979. Reproductive performance and growth studies on intensively managed indigenous Nigerian pigs from birth to 36 weeks. Ph.D. Thesis, University of Ibadan.
Essien, A. I. 1983. Growth studies on the indigenous Nigerian pig. Ph.D. Thesis, University of Ibadan.
Essien, A. I. and Fetuga, B. L. 1987. Effects of sex, age and body weight on selected organs of indigenous Nigerian pigs: liver, kidney, heart, lung-and-trachea. Journal of Agricultural Science, Cambridge 109: 393–398.
Essien, A. I. and Fetuga, B. L. 1988. Muscle growth and development in the indigenous Nigerian pigs as influenced by age, sex and body weight. Journal of Agricultural Science, Cambridge 110: 619–625.
Farinu, G. O. and Fetuga, B. L. 1986. Organ growth in two breeds of pigs fed diets varying in protein and energy levels. Nutrition Reports International 34: 109–117.
Fetuga, B. L., Babatunde, G. M. and Oyenuga, V. A. 1976. Comparative physical characteristics in the indigenous Nigerian and imported European pigs. Nigerian Journal of Animal Production 3: 74–87.
Flak, P., Hetényi, L. and Gráčik, P. 1987. Live weight growth in different pig genotypes. Pig News and Information 8: 145–150.
Ilori, J. O., Adeobola, A. A., Adeyanju, S. A. and Omole, T. A. 1975. Effect of protein level on reproductive performance of pigs under tropical conditions. Malaysian Agricultural Research 4: 193–197.
Ittner, N. R. and Hughes, E. H. 1938. A normal growth curve for swine. Journal of Heredity 29: 385–386.
Quijandria, B. and Robison, O. W. 1971. Body weight and backfat deposition in swine: curves and correlation factors. Journal of Animal Science 33: 911–918.
Rigor, E. M. and Kroeske, D. 1972. Indigenous and exotic pig breeds in the tropics. World Animal Review 4: 20–24.
Robison, O. W. 1976. Growth patterns in swine. Journal of Animal Science 42: 1024–1035.
Schmalhausen, I. I. 1935. Explanation of basic terms and methodology of growth study. Proceedings of the Conference on Growth of Farm Animals, Moskva, pp. 8–60.
Somade, B. 1985. The influence of season, parity and duration of lactation on some performance traits of sows indigenous to Nigeria. Beiträge zur Tropischen Landwirtschaft und Veterinärmedizin 23: 81–87.
Somade, B. 1987. Growth and sexual development of indigenous West African boars. Beiträge zur Tropischen Landwirtschaft und Veterinärmedizin 25: 103–109.
Somade, B. and Makinde, A. O. 1985. The influence of season on sow weaning to estrus interval and subsequent reproductive performance following estrus synchronization by batch weaning. Beiträge zur tropischen Landwirtschaft und Veterinärmedizin 23: 339–343.
Taylor, J. M. and Hazel, L. N. 1955. The growth curve of pigs between 134 and 174 days of age. Journal of Animal Science 14: 1133–1139.
Thomas, J. M. and Beamer, J. L. 1971. Age-weight relationships of selected organs and body weight for miniature swine. Growth 35: 259–272.