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IJARSFS Abstract

PERFORMANCE OF SOME BROILER STRAINS FED VARYING ENERGY LEVELS IN COLD SEASON OF SEMI-ARID SOKOTO, NIGERIA

1Sa’adu A., 1Bashar Y. A., 1Abubakar A., 2Abbas A. Y., 3Lawal N., 1Mani A. I., and *4Ribah, M. I.

1Department of Animal Science, Faculty of Agriculture, Usmanu Danfodiyo University, Sokoto, Nigeria.

2Department of Biochemistry, Faculty of Science, Usmanu Danfodiyo University, Sokoto, Nigeria.

3Department of Microbiology, Faculty of Veterinary Medicine, Usmanu Danfodiyo University, Sokoto, Nigeria.

4Department of Animal Science, Faculty of Agriculture, Kebbi State University of Science and Technology, Aliero, Nigeria.

Accepted May 30, 2018

Three broiler strains were placed on three different dietary energy and crude protein levels of 2900 KCal/Kg (ME) - 22% CP, 3100 KCal/Kg (ME) - 23% CP, and 3300 KCal/Kg (ME) - 24% CP representing low, medium and high energy levels, respectively, at starter phase. At the finisher phase, they were fed 2800 KCal/Kg (ME) - 19% CP, 3000 KCal/Kg (ME) - 20% CP and 3200 KCal/Kg (ME) - 21% CP in order to determine their productive performance in cold weather of semi-arid environment. A total of 675 birds were used in a completely randomized design (CRD) comprising 225 birds each of Arbor-acre, Hubbard and Marshall Strains serving as treatments with each group replicated five times so that each replicate had 15 birds. Each strain group was fed three different dietary energy levels at both starter and finisher phases for 56 days. Feed and water intake, weight gain, feed conversion ratio, and mortality were recorded. Cost/kg gain was determined at the end of both starter and finisher phases. Data recorded subjected to analysis of variance (ANOVA) and least significant difference (LSD) was used to compare the means. Results obtained in cold season revealed that there was no significant difference (P>0.05) in terms of average daily gain, feed intake, mortality and cost/kg gain across all the strain groups, but Arbor-acre and Hubbard strains had significantly (P<0.05) lower mortality than Marshall strain. Low energy diet had significant effect (P<0.05) on cost/kg gain, feed conversion ratio and highest weight gain compared to medium and high energy diets, at starter phase. At the finisher phase however, Arbor-acre strain had significantly lowest (P<0.05) feed conversion ratio and cost/kg gain and significantly (P<0.05) higher daily weight gain than other strains. Birds on low energy diet had significantly lowest (P<0.05) cost/kg gain and mortality and significantly highest (P<0.05) daily gain than birds on both medium and high energy diets. The study concluded that Arbor-acre strain could perform better owing to the lower mortality, cost/kg gain and higher average daily gain compared to other strains. It should therefore be raised and fed low energy diet in the cold season of semi-arid environment.

Key words: Performance, Broiler Strains, Energy Levels, Cold Season, Semi-Arid.

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