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Information Journal Paper

Title

Effect of microwave-treated poultry byproduct meal on growth performance, rumen Parameters, microbial protein, and nitrogen retention in Dalagh fattening lambs

Pages

  107-122

Abstract

 Background and objective: The use of conventional feed sources in livestock diets in addition to increasing demand and prices has also caused increasing their imports. On the other hand, the use of feed industry residues and their processing can provide reliable sources of nutrients in livestock diets. Therefore, this experiment was performed to investigate the processing of Microwave electromagnetic waves on Poultry byproduct meal on Growth performance, rumen parameters, Microbial protein production, and Nitrogen retention in fattening lambs. Materials and methods: Fifteen mixed male lambs with an average weight of 29. 3± 2. 7 were used in a completely randomized design with 3 feed treatments and 5 replications. Treatments include: 1-Soybean meal, 2-Poultry byproduct meal, 3-Microwave Poultry byproduct meal. The experiment consisted of 14 days of adaptation and 70 days of fattening. Weighing was done every 14 days. Feeding was done at 7: 00 and 19: 00. Daily feed intake, initial weight, and final weight were measured and recorded. Measurement of produced Microbial protein in the rumen was calculated by estimating purine derivatives excreted through urine collection. On the last day of the experiment, ruminal fluids were taken using a stomach tube and a vacuum pump three hours after the morning feeding. Then it was used to calculate the population of bacteria and protozoa, to determine the concentration of volatile fatty acids using standard internal solution and gas chromatography, to determine the concentration of ammonia nitrogen and the pH of the ruminal fluid. Results: The use of Microwaved Poultry byproduct meal in the diet instead of soybean meal in dry matter intake was not significantly different. Daily weight gain and total weight gain in Microwaved Poultry byproduct meal treatment were against the unprocessed treatment 324. 3 and 22. 7 kg versus 0. 277 and 19. 4 kg, respectively, with a significant difference and improved traits (P <0. 05). Also, feed conversion rate and feed efficiency between treatments 3 and 2 were 7. 446, 0. 135, and 8. 455, 0. 119, respectively, which showed a significant difference at the level of P <0. 07 and P <0. 08. The highest bacterial population (28. 8*109 ml) was observed in soybean meal treatment and was significantly different from other treatments (P <0. 05); however, no significant difference was observed between treatments in the protozoan population. Rumen pH between treatments 1 and 3 were 6. 73 and 5. 79, respectively (P <0. 05). There was no significant difference in ammonia nitrogen concentration in the ruminal fluid between treatments. The percentage of acetate, propionate, and the acetate to propionate ratio in the treatment of processed Poultry byproduct meal were 65. 8, 18. 8, and 3. 5, respectively, which were the lowest, highest and the lowest values compared with the other treatments, respectively (P<0. 05). There was no significant difference in Microbial protein production between treatments. The apparent Nitrogen retention in the Microwave treatment was 27. 129 g / day, which was not significantly different from other treatments. Its lowest amount (24. 861 g / day) was for soybean meal treatment, and its highest amount was for conventional treatments with Poultry byproduct meal was 32. 148 g / day (P> 0. 06). Conclusion: This study showed that the effect of Poultry byproduct meal, processed by Microwave method was better than the unprocessed Poultry byproduct meal on the Growth performance traits. Replacement of conventional and Microwaved Poultry byproduct meal with soybean meal did not significantly change the Growth performance traits. Also, conventional and Microwaved poultry by-product meals could be replaced with soybean meal up to 10% of the diet dry matter in fattening lambs without making any unfavorable conditions on the rumen parameters and apparent Nitrogen retention.

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    APA: Copy

    KAMALI, R., CHASHNIDEL, Y., TEYMOURI YANSARI, A., & MOHAJER, M.. (2021). Effect of microwave-treated poultry byproduct meal on growth performance, rumen Parameters, microbial protein, and nitrogen retention in Dalagh fattening lambs. JOURNAL OF RUMINANT RESEARCH, 9(3 ), 107-122. SID. https://sid.ir/paper/958202/en

    Vancouver: Copy

    KAMALI R., CHASHNIDEL Y., TEYMOURI YANSARI A., MOHAJER M.. Effect of microwave-treated poultry byproduct meal on growth performance, rumen Parameters, microbial protein, and nitrogen retention in Dalagh fattening lambs. JOURNAL OF RUMINANT RESEARCH[Internet]. 2021;9(3 ):107-122. Available from: https://sid.ir/paper/958202/en

    IEEE: Copy

    R. KAMALI, Y. CHASHNIDEL, A. TEYMOURI YANSARI, and M. MOHAJER, “Effect of microwave-treated poultry byproduct meal on growth performance, rumen Parameters, microbial protein, and nitrogen retention in Dalagh fattening lambs,” JOURNAL OF RUMINANT RESEARCH, vol. 9, no. 3 , pp. 107–122, 2021, [Online]. Available: https://sid.ir/paper/958202/en

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