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Growth Performance of Arsi, Borana, Harar and HF-Crossbred bulls finished under similar feeding condition

Article scientifique 2021 Anglais

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Abstract Background: The study was conducted to evaluate the fattening performance of Arsi, Borana, Harar and Holstein Friesian crossbred bulls finished under similar feeding condition at the beef farm in Haramaya University. A total of 24 bulls with age categories of 2–3 and 4–5 years were used in the complete block design for the experiment. Total mixed ration was provided at 3% of their body weight during experimental periods.Results: The average daily weight gain of the four breeds range from 0.49 to 0.71 kg. Feed conversion efficiency also ranges from 0.11–0.15. Simple linear regression models were used to explore the relationship between live body weight change and change in body condition score as well as seven linear body measurements for all age groups. An average change for a unite of body condition score was equivalent to 20.3, 20.61, 22.42 and 27.78kg for Borana, Arsi, Harar and Holstein Friesian crossbred bulls respectively. Body condition score was significantly influenced by breeds. There was a significant breed by age interaction effect on the initial body condition score of the four breeds. There was a significant and positive strong association between change in body weight and body condition score. There was a significant and strong correlation between change in body weight and change in Total topline, neck length, heart girth, flank circumference and rump length having correlation coefficient ranges from 0.57 to 0.97. Higher net profit of 7,380.47 ETB per head was recorded by Borana bulls followed by Harar bulls, Arsi and Holstein Friesian crossbred with net profit of 5,406.86, 5193.29 and 3,384.98 ETB per head respectively.Conclusion: Borana bulls are more superior in weight gain and net profite. Body weight change could be predicted based on body condition score change during fattening period.

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Musa, A., Mummed, Y., Kurtu, M., Temesgen, M., O’Quinn, T. (2021). Growth Performance of Arsi, Borana, Harar and HF-Crossbred bulls finished under similar feeding condition. https://doi.org/10.21203/rs.3.rs-409421/v2

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Auteur(s)

Ahmedin Abdurehman Musa Yesihak Yusuf Mummed Mohammed Yusuf Kurtu Melese Temesgen T. G. O’Quinn

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