Tolerance capability of desert sheep and goats to exercise heat stress under hot dry conditions, and its correlation with their production performance

Aboul-Naga, Adel; El-Shafie, M. H.; Khalifa, H.; Osman, Mona A.; Khalek, T.M. Abdel; El-beltagi, A.; Abdel-Aal, Ehab S.; Abdelsabour, Taha H.; Rekik, Mourad; Rouatbi, Myriam; Rischowesky, Barbara

doi:10.1016/j.smallrumres.2021.106550

Cited by 9 publications

(4 citation statements)

References 8 publications

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“…Therefore, FPG feed with higher nutritional quality and shorter fermentation time were superior to NPG feed and conventional silage ( Du et al, 2022 ). Previous studies have shown that thermal stress reduces goat growth performance (Live weight and carcass weight), which could be attributed to the severe energy expenditure of the animal to resist high heat ( Abhijith et al, 2021 ) and both increased respiratory and cutaneous evaporative cooling mechanisms ( Aboul Naga et al, 2021b ). Therefore, it is normal that the growth performance of goats in this trail is slightly lower than that of previous studies ( Mu et al, 2019 ).…”

Section: Discussionmentioning

confidence: 99%

Effects of fermented feed of Pennisetum giganteum on growth performance, oxidative stress, immunity and gastrointestinal microflora of Boer goats under thermal stress

Qiu

Zhao

et al. 2023

Front. Microbiol.

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IntroductionThis study was conducted to evaluate the effects of fermented feed of Pennisetum giganteum (P. giganteum) on growth performance, oxidative stress, immunity and gastrointestinal microflora of Boer goats under thermal stress.MethodsThe study was conducted during 45 days using twenty 2 months Boer goats. The goats were randomly allocated into two groups: NPG (n = 10; normal P. giganteum) and FPG (n = 10; fermented feed of P. giganteum), and the ratio of concentrates to roughage was 3:2. Both groups of animals were kept in sheds and exposed to summer thermal stress from 10:00 h to 18:00 h (temperature and humidity index, THI > 78). At the end of the study, the animals were slaughtered and assessed for various characteristics.ResultsThe findings from the study revealed that FPG-feeding significantly increased (p < 0.05) average daily gain (ADG, 48.18 g) and carcass weight (4.38 kg), while decreased (p < 0.01) average daily feed intake (ADFI, 0.74 kg/d; p < 0.01) and the feed:gain (F/G, 15.36) ratio. The CAT, GSH-Px activities and GSH in serum, liver and spleen, and the levels of IgA, IgG, IgM, IL-2, IL-4 and IL-1β in serum of FPG-fed goats were significantly higher (p < 0.05) than those of NPG-feeding goats. Further, we found that FPG feed is rich in nutrients with Lactobacillus (65.83%) and Weissella (17.80%). Results for gastrointestinal microbiota composition showed that FPG-feeding significantly enhanced the abundance of Lactobacillus and unidentified Clostridiales, and reduced Anaerovibrio and Methanobrevibacter. Meanwhile, Spearman’s correlation analysis showed that these microbiotas were closely related to the improvement of oxidative stress and immune indexes of goats.DiscussionThese results demonstrated that FPG-feeding not only reduces oxidative stress and improves ROS clearance to enhance antioxidant defense system, but also improves gastrointestinal microbiota to enhance immune function by overcoming the adverse effects of heat stress, and further improve growth performance of goats.

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Section: Discussionmentioning

confidence: 99%

Effects of fermented feed of Pennisetum giganteum on growth performance, oxidative stress, immunity and gastrointestinal microflora of Boer goats under thermal stress

Qiu

Zhao

et al. 2023

Front. Microbiol.

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“…A temperature-humidity index (THI) is a single value representing the combined effects of air temperature and humidity associated with the level of thermal stress. This index has been developed as a weather safety index to monitor and reduce heat-stress-related losses [ 38 , 39 , 40 ]. The tolerance of animals to high air temperatures depends on the amount of water vapor in the air as this affects the rate of heat loss by evaporation.…”

Section: Discussionmentioning

confidence: 99%

Physiological, hematological, and biochemical responses in Hararghe-highland lamb subjected to water salinity levels of Lake Basaka in a semiarid area of Ethiopia

Tulu

Urge

Yusuf

2022

Heliyon

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“…The largest trial was in 1983, included 78 Damascus bucks distributed on the Bedouin goat breeders, with the objective to introduce around 25% of Damascus blood to the region. The trial was assessed after two decades with 59 breeders (Aboul Naga, et al, 2010). The Damascus crosses had the advantage of heavier weights, better body confirmation, and higher milk production.…”

Section: Damascus Goatmentioning

confidence: 99%

Review of Literature for Sheep and Goat RESEARCH and development in Egypt, Since the Forties: III. Local and Exotic Goat Breeds, Production Performance, and Breeding Programs

Aboul –Naga,

Abo Amo,

Abdel-Aal

et al. 2023

Journal of Animal and Poultry Production

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Goats are the most efficient animals in converting poor feed resources into valuable food commodities, than other farm animals. It is emerged as a good source of food, income, and employment for rural societies, especially in less favoured environments. Distribution of goats in the country, under different production systems were presented. Four major local goat breeds are widely distributed in Egypt, i.e., Baladi in the Delta, Saidi in Upper Egypt, Barki in Western Desert and the Zaraibi (Egyptian Nubian) as potential dairy prolific breed, in northeast Delta. Minor local goat breeds are Wahati in the New Valley, Black Sinai in Sinai Peninsula, and Abou Ramada-Halaieb-Shalateen goats. Production performance (growth, reproduction and milk production) of the major local breeds reported in the literature are tabulated and discussed. Exotic breeds introduced to the country, i.e. Damascus, Alpine, Angora, Anglo Nubian, and Boer, along with their breeding and crossing programs with local goat breeds were reported. The authors recommended the promotion of the socioeconomic role of goats for the poor rural households and women; and taking an advantage of the goat adaptability to harsh conditioned, in the hot dry environment. Improving genetic potentials of Zaraibi goats for prolificacy and dairy characteristics, and crossing Damascus goats with Barki and Baladi goats are recommended for improvement of local goats.

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Tolerance capability of desert sheep and goats to exercise heat stress under hot dry conditions, and its correlation with their production performance

Cited by 9 publications

References 8 publications

Effects of fermented feed of Pennisetum giganteum on growth performance, oxidative stress, immunity and gastrointestinal microflora of Boer goats under thermal stress

Effects of fermented feed of Pennisetum giganteum on growth performance, oxidative stress, immunity and gastrointestinal microflora of Boer goats under thermal stress

Physiological, hematological, and biochemical responses in Hararghe-highland lamb subjected to water salinity levels of Lake Basaka in a semiarid area of Ethiopia

Review of Literature for Sheep and Goat RESEARCH and development in Egypt, Since the Forties: III. Local and Exotic Goat Breeds, Production Performance, and Breeding Programs

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