Abozed, G., Boraei, M., El-Sysy, M., Hafez, Y., El-kheshen, O. (2021). Effect of Feeding Frequency and Housing System on Physiological Responses and Performance of Male Lambs under Upper Egypt Hot Conditions. Journal of Animal and Poultry Production, 12(2), 85-89. doi: 10.21608/jappmu.2021.59510.1008
G. F. Abozed; M. A. Boraei; M. A. I. El-Sysy; Y. H. Hafez; O. A. M. El-kheshen. "Effect of Feeding Frequency and Housing System on Physiological Responses and Performance of Male Lambs under Upper Egypt Hot Conditions". Journal of Animal and Poultry Production, 12, 2, 2021, 85-89. doi: 10.21608/jappmu.2021.59510.1008
Abozed, G., Boraei, M., El-Sysy, M., Hafez, Y., El-kheshen, O. (2021). 'Effect of Feeding Frequency and Housing System on Physiological Responses and Performance of Male Lambs under Upper Egypt Hot Conditions', Journal of Animal and Poultry Production, 12(2), pp. 85-89. doi: 10.21608/jappmu.2021.59510.1008
Abozed, G., Boraei, M., El-Sysy, M., Hafez, Y., El-kheshen, O. Effect of Feeding Frequency and Housing System on Physiological Responses and Performance of Male Lambs under Upper Egypt Hot Conditions. Journal of Animal and Poultry Production, 2021; 12(2): 85-89. doi: 10.21608/jappmu.2021.59510.1008
Effect of Feeding Frequency and Housing System on Physiological Responses and Performance of Male Lambs under Upper Egypt Hot Conditions
1Animal Production Research Institute, Agriculture Research Center, Dokki, Giza, Egypt.
2Al-Azhar University, Faculty of Agric., Anim. Prod. Department, Nasr City, Cairo, Egypt.
Abstract
A total of 40 Farafra ram-lambs were used to investigate the effect of feeding frequency under different housing systems on physiological responses and growth performance under Upper Egypt hot conditions. Lambs were randomly allocated to 4 groups (10 lambs each); group (I) fed twice daily and housed in a semi-open pen, group (II) fed twice daily and housed in double-roofed pens, group (III) fed three times daily and kept in a semi-open pen and group (IV) fed three times daily and kept in a double-roofed pen. During the experimental period, the mean THI at pm was significantly higher in semi-open type than double-roofed one (90.2 ± 0.27 vs. 83.9 ± 0.29). At 12.00:14.00 h. pm, the lowest respiration rate was recorded in a group (IV) "56.0 ± 2.44" and the highest one was recorded in a group (I) "70.5 ± 3.3" and rectal and skin temperatures almost have taken similar trend. The results revealed that blood metabolites did not significantly (P > 0.05) affected by either housing type or feeding frequency. The results showed that group (III) had the highest final body weight (37.2 ± 0.97 kg) and total body weight gain (21.7 ± 0.68 kg) and average daily gain (148.2 ± 6.50 g/day) followed by group (I) then group (IV) and group (II). In conclusion, the feeding frequency of 3 times daily was more beneficial than feeding twice, and the physiological responses of lambs housed under double-roofed closed type were better compared to semi-open type.
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