The effect of heat load on nutrient utilization and blood parameters of Awassi ram lambs fed different types and levels of forages

Denek, Nihat; Can, Abdullah; Tufenk, S.; Yazgan, Kemal; Ipek, Hüdai; İriadam, Mehmet

doi:10.1016/j.smallrumres.2005.02.017

Cited by 10 publications

(4 citation statements)

References 16 publications

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“…Some previous studies found that exposing Awassi wethers and rams to moderate heat stress did not affect feed intake (Bhattacharya & Uwayjan 1975; Denek et al . 2006); however, Bhattacharya & Hussain (1974) reported a 14–50% decrease in feed intake on Awassi wethers exposed to 32°C but with a high relative humidity (89%). The DMI expressed on the metabolic BW basis of Aardi goats during summer in this study was higher than that reported in desert-adapted goats during hot summer conditions (Silanikove 1985; Ahmed & El Kheir 2004).…”

Section: Discussionmentioning

confidence: 99%

Water requirements and body water distribution in Awassi sheep and Aardi goats during winter and summer seasons

Alamer

2010

J. Agric. Sci.

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SUMMARYWater requirements, total body water (TBW) and water distribution were evaluated in Awassi sheep and Aardi goats of Saudi Arabia. Ten non-pregnant and non-lactating females from each species were individually housed in shaded pens during winter and summer seasons. Each experimental period lasted for 2 weeks; the first week was an adaptation period, followed by an evaluation period of 1 week. Feed and water intake together with body weight were recorded daily. Five animals from each group were used for determination of body water, extracellular fluid (ECF) and plasma volume (PV) using dilution techniques. Urea and sodium thiocyanate were used for the estimation of body water and ECF, respectively, and Evans blue for PV determination. Intracellular fluid (ICF) and blood volume (BV) were calculated. Feed intake was not affected by either season or species. During the winter season, Aardi goats had lower water intake in comparison with Awassi sheep, but water intake increased in all animals during summer. TBW increased during summer in all animals, but with higher values in the Aardi goats. During summer, ECF tended to increase in Aardi goats. PV, expressed as a proportion of body weight, was not affected by season, but it was maintained at higher levels in the Aardi goats irrespective of season. It could be concluded that Aardi goats used water more economically when the ambient temperature was lower but, during the summer when ambient temperatures were higher, they increased their water intake and BW content to a greater extent and stored more water in the ECF compartment compared to Awassi sheep.

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Section: Discussionmentioning

confidence: 99%

Water requirements and body water distribution in Awassi sheep and Aardi goats during winter and summer seasons

Alamer

2010

J. Agric. Sci.

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“…Denek et al (21) also reported that high ambient temperatures and relative humidity decreased FI in Awassi wethers; day temperatures reaching 32 °C and 98% relative humidity adversely affected ad libitum FI and nutrient utilization in sheep. According to these authors (21), the depressions became increasingly severe with increasing forage levels in the diet. Voluntary FI is reduced, so heat production resulting from metabolic processes is also decreased (21).…”

Section: Discussionmentioning

confidence: 99%

“…According to these authors (21), the depressions became increasingly severe with increasing forage levels in the diet. Voluntary FI is reduced, so heat production resulting from metabolic processes is also decreased (21). However, the reported effects of supplemental NaHCO 3 on FI have been variable.…”

Section: Discussionmentioning

confidence: 99%

Effect of sodium bicarbonate supplementation and 2 different ambient temperatures on growth performance and carcass characteristics of lambs fed concentrate diets

Jallow¹,

Hsia²

2014

Turk J Vet Anim Sci

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Twenty male Barbados lambs (3 months old) were used to evaluate the effects of sodium bicarbonate (NaHCO 3 ) supplementation on growth performance and carcass characteristics of lambs fed concentrate diets in controlled-environment chambers set at 20 °C and 30 °C. In the 35-week-long growth trial, the animals were divided into 4 groups (n = 5) and fed 2 dietary treatments: a basal diet (35:65 roughage and concentrate) or a basal diet supplemented with 4% NaHCO 3 . Twelve lambs randomly selected from this trial were arranged in a 2 × 2 factorial design for a 10-day-long slaughter and carcass evaluation experiment. Lambs in the 20 °C ambient temperature group had higher (P < 0.001) feed intake (FI, g day -1 ) and body weights (P < 0.01) than those of the other group. The NaHCO 3 -supplemented group had higher (P < 0.05) FI g day -1 and average daily gain (ADG, kg -1 ) (P < 0.01) than the other group. The 30 °C ambient temperature affected half carcass weights, body lengths, and bone lengths (P < 0.05, P < 0.01, and P < 0.01, respectively). In conclusion, incorporation of NaHCO 3 to concentrate diets at a 20 °C ambient temperature increased FI g day -1 and ADG kg -1 , resulting in improved growth performance of the lambs.

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“…Previous study showed that feeding at night increased energy utilization in lambs, because of increasing in nutrients digestibility (Hongyantarachai et al, 1989;Denek et al, 2006). Gaughan et al (2002) reported that night feeding was able to decrease heat load and reduce lost energy for thermoregulation (Aharoni et al, 2005).…”

Section: Introductionmentioning

confidence: 98%

Dietary Energy Utilization in Rams Being Fed During the Day and/or at Night

Aprilliza

Purnomoadi

Rianto

2014

J. Indonesian Trop. Anim. Agric.

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ABSTRAKSuatu penelitian telah dilakukan dengan tujuan untuk mengkaji pemanfaatan energi pakan pada domba ekor gemuk jantan yang diberi pakan pada siang dan atau malam hari. Penelitian ini menggunakan 12 ekor domba lokal jantan berumur 12-18 bulan, bobot badan awal rata-rata 27,05±2,9 kg, (CV = 10,74%). Rancangan percobaan yang digunakan adalah rancangan acak lengkap (RAL) dengan 3 perlakuan dan 4 ulangan. Perlakuan tersebut adalah day feeding (DF): pemberian pakan pada siang hari (06.00-18.00), night feeding (NF): pemberian pakan pada malam hari (18.00-06.00), dan day and night feeding (DNF): pemberian pakan siang dan malam hari (06.00-06.00). Pemberian pakan secara ad libitum. Hasil penelitian menunjukkan bahwa waktu pemberian pakan pada siang dan/atau malam hari tidak berpengaruh nyata terhadap semua parameter yang diamati. Rata-rata konsumsi bahan kering, pertambahan bobot badan harian, konsumsi energi bruto, kecernaan energi dan deposisi energi berturut-turut adalah 1.006 g/hari, 75 g, 19,2 MJ/hari, 74,0% dari energi terkonsumsi, dan 66,2% dari energi terkonsumsi. Efisiensi pakan, efisiensi energi terkonsumsi, efisiensi energi tercerna, dan efisiensi energi terdeposisi berturut-turut adalah 7,38%, 3,86 g pbbh/MJ, 5,24 g pbbh/MJ, dan 5,84 g pbbh/MJ. Kesimpulan penelitian ini adalah bahwa pemberian pakan pada DF dan/atau NF tidak meningkatkan pemanfaatan energi pakan pada domba ekor gemuk jantan.Kata Kunci: domba ekor gemuk jantan, pemanfaatan energi, waktu pemberian pakan ABSTRACTA study was carried out to assess dietary energy utilization in male fat-tailed sheep being fed during the day and/or at night. This study were used 12 rams of 12-18 months old with average of initial body weight of 27.05±2.9 kg (CV = 10.74%). The experimental design used in this study was a completely randomized design (CRD) with 3 treatments and 4 replications. The treatments were feeding during the day (06.00-18.00; DF), feeding at night (18.00-06.00; NF), and feeding all day and night (06.00-06.00; DNF). The diet was offered ad libitum. The results showed that feeding during the day and/or at night did not significantly affect (P>0.05) all parameters observed. The average of dry matter intake (DMI), average daily gain (ADG), gross energy intake (GEI), energy digestibility (DE) and energy metabolizability (ME) were 1006 g/d, 75 g/d, 19.2 MJ/d, 74.0% of gross energy, and 66.2% of gross energy, respectively. The feed efficiency ratio (FCR), gross energy efficiency, digestible energy efficiency, and metabolizable energy efficiency were 7.38%, 3.86 g ADG/MJ, 5.24 g ADG/MJ, and 5.84 g ADG/MJ, respectively. It is concluded that time of feeding did not affect the dietary energy utilization in local rams.

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The effect of heat load on nutrient utilization and blood parameters of Awassi ram lambs fed different types and levels of forages

Cited by 10 publications

References 16 publications

Water requirements and body water distribution in Awassi sheep and Aardi goats during winter and summer seasons

Water requirements and body water distribution in Awassi sheep and Aardi goats during winter and summer seasons

Effect of sodium bicarbonate supplementation and 2 different ambient temperatures on growth performance and carcass characteristics of lambs fed concentrate diets

Dietary Energy Utilization in Rams Being Fed During the Day and/or at Night

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