The effects of crude protein content in the diet of layers on quality of manure for feed recycling

Date

3-1979

Abstract

A two phase experiment was conducted to determine the feeding quality of four sources of dried poultry wastes (DPW) as influenced by varying levels of crude protein in the original diets.

The crude protein levels affected the composition of the DPW produced by the layers. The experiment showed that layers performance was slightly better on the 15 and 18 percent protein diets as compared to the extreme low of 12% and extreme high of 21%.

The resulting DPW from the various diets when used as a feed ingredient in ration of layers at 20% level generally showed no detrimental effect as compared to the control. There were only slight differences in the overall effects of the various DPW when compared with each other. In some production criteria, the control diet appeared mid-way among the groups of DPW dietary formulations.

There were distinct evidences that diets with DPW were relished by layers in significantly higher amounts than the control diets. Layers fed DPW diets also excreted more manure and a slightly higher feed efficiency values were obtained. The manner of incorporating 20% level of DPW in the diet by adjusting nutrient level and through simple substitution without adjustment did not show very definite patterns of discrepancy in egg production traits. However, it was evident that feed consumption was higher while feed efficiency was consistently poorer for the unadjusted DPW diets.

Approximately, half of the dietary treatments with DPW had performed economically as well or even better than the conventional diet. Some treatments were slightly lower on economic evaluation than the control. However, when all benefits derived from the recycling of poultry manure will be considered, there is so much merits to warrant its use as a feedstuff even today and more in the future.

Document Type

Dissertation

College

Graduate School (GS)

Adviser/Committee Chair

Elpidio C. Colicado

Committee Member

Obdulla F. Sison, Narciso R. Deomampo, Vicente G. Momongan

Language

English

LC Subject

Egg--Production, Poultry--Feeding and feeds, Recycling (Waste, etc)

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 996 1979 A5 D45

Notes

Doctor of Philosophy (Poultry Science)

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