Hosam Al-Tamimi

• Professor
• Professor (Full) at Jordan University of Science and Technology

This study was designed to characterize changes in the acute phase proteins (APPs), hormones parallel to performance, and egg quality traits in laying hens exposed to heat stress (HS). A total of 120 sixteen-week-old Lohmann hens was allowed an adaptation period of 5 weeks in 3 different rooms at 21 °C. The hens were then exposed to one of three cl...

We investigated the thermotolerance of the F1 progeny (Black Bedouin × Damascus crossbreed) to summer conditions alongside that of two pure breeds. Male goats (n = 7 per breed) were used to conduct a summertime 28-day trial along with hypohydration. The animals were fitted with miniscule thermologgers, intraperitoneally and subcutaneously, to measu...

Simple Summary Improving broiler performance is still an essential task in animal production, especially under certain environmental challenge conditions. Heat stress is among the first and crucial limiting factors of the development of poultry production in warm regions. Betaine (B) and creatine (C) are seemingly two promising additives that showe...

The aim of this study was to compare the effect of stocking density on growth performance and slaughter traits of two different commercial broiler strains. A total of 600 birds (300 Hubbard and 300 Ross 308) were grouped in two stocking density for each strain (12 and 18 birds/m 2). Body weight was recorded at the beginning of the study and then on...

Background The thyroid gland contributes immensely to the basal metabolic rate, and hence, thermogenesis in mammals. Its response to the thermal environment is, however, slow and may require several days to adjust. A rapid thyrosuppressive mechanism (“Wolff–Chaikoff” phenomenon; WC) is inducible by high dietary iodine ingestion. The current study a...

Background and Aim: Hypercholesterolemia (HC) is the major leading cause of cardiovascular disease worldwide. Such atherogenic aberration deeply impacts blood circulation. Resveratrol (R) is a polyphenol that has received attention as a hypolipidemic, antioxidant, and vascular agility advocate. Efficient blood redistribution is a key element in mam...

Obesity and concomitant cardiovascular complications are increasingly alerting worldwide. Herein, the effects of isoflavones (Iso) and phytosterols (Phyto) alone and combined on hypercholesterolemia and body weight gains, in shadows of endocrine axis were investigated. Sixty male Sprague-Dawley rats were randomly assigned to five treatment groups (...

Obesity and concomitant cardiovascular complications are increasingly alerting worldwide. Herein, the effects of isoflavones (Iso) and phytosterols (Phyto) alone and combined on hypercholesterolemia and body weight gains, in shadows of endocrine axis were investigated. Sixty male Sprague-Dawley rats were randomly assigned to five treatment groups (...

Obesity and concomitant cardiovascular complications are increasingly alerting worldwide. Herein, the effects of isoflavones (Iso) and phytosterols (Phyto) alone and combined on hypercholesterolemia and body weight gains, in shadows of endocrine axis were investigated. Sixty male Sprague-Dawley rats were randomly assigned to five treatment groups (...

This research aimed at screening the anti-cancer activity of cell extracts of forty potential probiotic bacterial isolates against 2 colorectal cancer (CRC) cell lines (namely, Caco-2 and HRT-18), and vero cells using 3-(4, 5-dimethylthiazolyl-2)-2, 5-diphenyltetrazolium bromide (MTT) and Trypan Blue assays (TBE). Results demonstrated that 2 isolat...

Genetic diversity of goat breeds in Jordan was investigated using six microsatellite markers (MS). The markers were BM143, CSRD247, INRA40, OARAE54, ILSTS005 and MCM527. The selected goats were predefined into four breeds based on morphological and geographical considerations as Jabali, Dhaiwi, Shami and Sahrawi. The number of alleles, expected and...

This study aimed to investigate the beneficial effect of isoflavones alone or probiotics-co-fermented isoflavones on serum and hepatic lipid profile, serum steroid (SHs) and thyroid hormones (THs) of hypercholesterolemic rats (N = 48). Animals were fed for 8 weeks with probiotics-co-fermented isoflavones or isoflavones alone, beside high-fat-high-c...

The objective of this study was to evaluate the effect of using corn silage (SILAGE) or wheat hay (HAY) as a source of forage on nursing performance of Awassi ewes. Forty ewes (body weight; BW = 43.5 ± 1.58 kg) and their single lambs (BW = 6.3 ± 0.28 kg) were randomly assigned to two diets; SILAGE vs. HAY (four pens/diet; five ewes/pen). Concentrat...

Goat keeping is feasible for smallholder farmers in many world regions especially those best suited for extensive management. However, summertime grazing in arid zones entails major challenges to animal thermoregulation and well-being. An experiment was conducted to evaluate the thermoregulatory performance and selected hemogramic parameters in int...

An 8 wk study was conducted to evaluate effects of feeding broiler litter (BL) on milk production and composition as well as nutrient intake and digestibility of nursing Awassi ewes. Thirty Awassi ewes (body weight (BW) = 50.3 ± 2.47 kg) and their single lambs (7.0 ± 0.85 kg BW) were randomly assigned to one of three dietary treatments (n = 10) bei...

Genetic diversity of fat-tailed sheep of Jordan was investigated using microsatellite markers (MS). Six ovine and bovine MS located on chromosomes 2 and 6 of sheep genome were employed for genotyping three flocks in southern region of Jordan. The genetic diversity was evaluated by measuring expected (H-e) and observed (H-o) heterozygosity, Polymorp...

A study was conducted to evaluate the effect of shade (SHD) deprivation on the thermo-physiological response in goat kids. Seven Damascus kids were exposed to daytime solar radiation (SUN; days 0–20), after an initial 7-day SHD period. Another group (n = 7) was maintained under a SHD regimen throughout the 28-day observation period. Daily measureme...

Intake of endophyte-infected fescue diets (E+) during heat stress results in hyperthermia. This may be due to increased peripheral vasoconstriction as a result of a reduction in nitric oxide (NO) level. Rats were exposed to 32 °C for 22 d. During the last 15 d, they received exogenous NO (molsidomine; M+; 120 mg/mL drinking water) in combination wi...

Unlike poikilotherms, homeotherms resist wide amplitudes of core body temperature (Tcore) fluctuation when exposed to reasonably variant ambient temperature (Ta) extremes. The degree of cold/heat thermotolerance varies tremendously amongst mammalian species. Thermotolerance can be partially inferred by the extent of resistance in body temperature d...

Thyroid hormones play a major role in controlling basal metabolic rate, body temperature and hemodynamics. Responses of core and peripheral body temperatures to transient use of thyreostatic drugs are seldom measured simultaneously under chronic experimental settings. We developed a technique to attain this goal. Eighteen Damascus goat kids (initia...

A study was conducted to examine the effects of solar Radiation exposure (RAD) on thermoregulatory and growth performance of goat kids. Five indigenous black Bedwin goat kids were exposed to daytime RAD (Days 8-28) after an initial 7 day Shading (SHD) period, while another 5 kids (n=5) were exposed to SHD regimen throughout the entire 28-day study...

Claviceps purpurea infects the seed heads of cereal grains and grasses and produces ergopeptine alkaloids that cause hyperthermia and agalactia in cattle during periods of heat stress. A field experiment was undertaken to examine the effects of ergopeptine alkaloids found in barley on thermal status of dairy cattle during periods of heat stress. Pr...