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1998, Number 1

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Vet Mex 1998; 29 (1)

Effect of feeder height on tarsus length, pigmentation and productive parameters in broilers

Quintana LJA, Castafíeda SMP, Aguilera GH, López CC, Quiroz PM, Cázares HR, Ruiz HR, Ávila GE,

Language: English/Spanish
References: 23
Page: 41-47
PDF size: 631.64 Kb.


ABSTRACT

In a completely randomized experiment, total feed conversion, and daily gain of body weight, productivity index, mortality and variation coeficient of body weight were evaluated in broiler chicks: the tarsus-metatarsus and the pigmentation of males and females was also measured. One thou-sand four houndred and forty unsexed broiler chicks. Peterson X Avian Farm were raised in natural house including isolation of poliuretane at an altitude of 2470 m [asl] and an average temperature of 14°C. Two treatments were employed (A and B). These treatments consisted of two heights of the border of feeder in relation to the floor. In treatment A, the border height of the feeder was raised to the level of the average of the inferior border of the wing of the birds. In treatment B, the border height of the feeder remained at the level of the average of the back of the birds. In both treat-ments, the height was adjusted weekly. Six repetitions per treatment were used. Results averaged in weight for treatments A and B at 56 days of age, 2.792 kg and 2.730 kg, respectively. There were no significant differences (P › 0.05) between the treatments. The long tarsus-metatarsus (116.2 mm and 115.7 mm) and yellow pigmentation (30.34 and 29.58) were similar statistically. The productive parameters of feed conversion, productivity index and mortality did not show a significant statistical difference between treatments, however, treatment A presented 7% more animals above body weight average than treatment B, because treatment A had a minor variability.


REFERENCES

  1. Appleby MC, Hughes BO, Elson HA. Poultry production systems. Behavior, management and welfare. Wallingford (UK): CAB International, 1992.

  2. Preston AP, Mulder J. Effect of vertical food-trough dividers on the feeding and agonistic behaviour of layer hens. Br Poult Sci 1989;30:489-496.

  3. Gleaves EW. Application of feed intake principles to poultry care and management. Poult Sci 1989;68:958-969.

  4. Sengör E. The interactions between feed texture and feeder space allowances considering broilers. Lal Hayv Arast Enst Dergisi 1988;28:5 1-59.

  5. Castro LF. Análisis del costo de producción de carne de pollos en la granja Silvia del estado de Tlaxcala (tesis de licenciatura). México (DF) México: Facultad de Medicina Veterinaria y Zootecnia, UNAM, 1979.

  6. Cuca GM, Ávila GE, Pro MA. Alimentación de las aves. Montecillos (Edo. de México) México: Colegio de Postgraduados, 1990.

  7. Dekich MA. Manejo del pollo de engorda. Acontecer Avícola 1995;3:6-20.

  8. Silva MR. Comparación de la productividad del pollo de engorda utilizando comederos de tolva con plato de lámina y plato de plástico (tesis de licenciatura). México (DF) México: Facultad de Medicina Veterinaria y Zootecnia. UNAM, 1991.

  9. Van der Sluis. The modern bird needs a proper feeder. Misset Wld Poult 1992;8:40-41.

  10. Ahmed H, Kiani GS, Hashmi AS. Influence of variable feeder and water space on growth efficiency of male broilers. Indian J Poult Sci 1991;26:80-83.

  11. Baker W. Consideraciones básicas en el pollo de engorda. Acontecer Avícola, 1995;11:28-31.

  12. North MO. Manual de producción avícola. 3a ed. México (DF): Manual Moderno, 1994.

  13. Quintana JA. Manejo del equipo en pollos de engorda. Memorias del XIV Simposium Avícola Anual. 1996 junio 6-7; Villahermosa, Tabasco, México. Villahermosa, Tabasco, México: Universidad Juárez Autónoma de Tabasco, 1996:59-65.

  14. Nilipour A. Uniformidad de la parvada. Industria Avícola, 1994;12:42-45.

  15. Quintana JA. Perspectivas de la producción de pollo de engorda. Memorias de la III Jornada Médico Avícola. 1992 agosto 12-14; México (DF), México. México (DF): Facultad de Medicina Veterinaria y Zootecnia. UNAM, 1992: 172-175.

  16. Boushy AR, Ratering R. Egg yolk pigmentation. Wld Rev Anim Prod 1992;27:50-62.

  17. Rountree JL. The technique for quantification of thymus, bursa and bone narrow and other changes. Litchfield (ME): Program Consultant Avian Health and Management, 1987.

  18. Quiroz PM. Comparación de los parámetros productivos del pollo de engorda con dos niveles de altura del comedero. Memorias de la XXI Convención Anual de la Asociación Nacional de Especialistas en Ciencias Avícolas. 1996 mayo 1-5; Cancún, Quintana Roo, México. México (DF): Asociación Nacional de Especialistas en Ciencias Avícolas, 1996:426-428.

  19. García E. Modificación al sistema de clasificación climática de Koeppen. México (DF): Instituto de Geoerafía, Universidad Nacional Autónoma de México, 1981.

  20. Martínez LA, Lien RJ, McDaniel JR. Shank leng and plasma thyroid hormone concentrations of broilers cockerels from lines divergently selected for tibial dyschondroplasia. Poult Sci 1993;1:24.

  21. Lindberg AC, Nicol CJ. An evaluation of the effect of operant feeders on welfare of hens maintained on litter. Appl Anim Behav Sci 1994;41:211-227.

  22. Martínez GA. Evaluación de los valores de pigmentación de la piel en la pechuga de pollos de engorda comparándolas con otras regiones anatómicas medidas con el colorímetro de reflectancia (tesis de licenciatura). México (DF) México: Facultad de Medicina Veterinaria y Zootecnia. UNAM, 1996.

  23. Guerrero CR, Valladares JC, Quintana LJA. Evaluación del daño bursal, mediante el índice bursal, rango tarso bursal y el estudio histopatológico en pollos de engorda vacunados contra la infección de la bolsa de Fabricio. Memorias de la IV Jornada Médico Avícola 1993 agosto 4-6; México (DF) México. México (DF): Facultad de Medicina Veterinaria y Zootecnia.




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