Alpízar SO, López CC, Peñalva GG, Vásquez PC, Avila GE

Language: English/Spanish
References: 9
Page: 211-215
PDF size: 74.66 Kb.

ABSTRACT

1440 Hybro broiler chickens were randomly distributed in 8 treatment groups in a factorial arrangement; 4 metabolizable energy (ME) levels per adjustment or not of nutrients, Starting, growing and finishing feeds contained 2990, 3020, 3080, 3110; 3030, 3060, 3120, 3150 and 3150, 3180, 3240, 3270 Kcal ME/kg of feed, respectively. In every stage the following crude protein (CP) contents were used: 22, 19.4 and 18.3; methyonine plus cystine: .88, .83 and .80; lysine: 1.22, 1.90 and 1.0; calcium: 1.0, .96 and .86 and available phosphorus: .45, .42 and .40%. Results after 52 days indicated no statistical differences on body weight, feed consumption nor in feed conversion. No significant differences were found in abdominal fat and pigmentation. This data showed that increasing ME levels in diets for starting, growing and finishing diets which range from 2990 to 3110, 3030 to 3150 and 3150 to 3270 Kcal/kg does not affect broiler performance.

REFERENCES

1. Antillón, R.A. y López, C.C.: Enfermedades Nutricionales de las Aves. Fac. de Med. Vet. y Zoot., Universidad Nacional Autónoma de México, México, D.F., 1987.

2. Arce, M.J., Castellanos, G.F., Berger, M. y López, C.C.: Programas de alimentación para el control del síndrome ascítico en pollos de engorda. XV Convención Nacional de la Asociación Nacional de Especialistas en Ciencias Avícolas. Cancún, Q. Roo, México. 1990. 169-177. Quetzalcoatl. México, D.F. (1990).

3. Becker, W.A., Spencer, J.V., Mirosh, L.W. and Verstrate, J.A.: Prediction of fat and free Iive weight in broiler chickens using backskin fat, abdominal fat and Iive body weight. Poult. Sci., 58: 835-842 (1979).

4. Brown, H.B. and McCartney, M.G.: Effects of dietary energy and protein and feeding time on broiler performance. Poult; Sci., 61: 304-310 (1982).

5. Coon, C.N., Becker, W.A. and Spencer, J.V.: The effect of feeding high energy diets containing supplemental fat on broiler weight, feed efficiency and carcass composition. Poult; Sci., 60: 1264-1271 (1981).

6. Crampton, E.W. y Harris, E.L.: Nutrición Animal Aplicada. W.F. Freeman, Santa Barbara, California, 1982.

7. Cullison, E.A.: Feeds and Feeding. 3rd ed. Reston Publishing, Reston, Virginia, 1982.

8. Donaldson, W.E.: Lipogenesis and body fat in chicks: Effects of calorie-protein ratio and dietary fat. Poult. Sci., 64: 1199-1204 (1985).

9. Enríquez, V.F.: Efectos de niveles energéticos y proteícos en dietas para pollos de engorda. Tesis de licenciatura. Fac. de Med. Vet. y zoot. Universidad Nacional Autónoma de México., México, D.F., 1976.