Response to water deprivation by Yankasa ewes under different physiological states

Aganga, A.A.; Umunna, N.N.; Oyedipe, E.O.; Okoh, P. N.; Aduku, A. O.

doi:10.1016/0921-4488(90)90086-l

Cited by 23 publications

(14 citation statements)

References 10 publications

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“…Barbarine breed is known by their attitude of adaptation to dry areas conditions.Waterdeprived ewes drank much more at each drinking time that control ewes. Our results agree with previous work [9]. The rumen is known to be a water reservoir that can store a large volume of water taken in at the end of dehydration period.…”

Section: Discussionsupporting

confidence: 93%

Effect of Pre-Mating Water Deprivation on Ovarian Activity and on Reproductive Traits of Mature Barbarine Ewes during Summer Season

Khnissi¹,

Lassoued²,

Rekik³

et al. 2014

IJESD

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Abstract-60 mature Barbarine ewes were used to study the effect of water deprivation on feed intake and reproductive traits. Animals were allocated to two groups of 30 animals each. Control ewes (C) had free access to water while deprived ewes (D) were watered every 3 days during 8 weeks in mating period.Feed and water intake were recorded daily for each animal. Body weight was measured every week. Rectal temperature was also measured every week of the trial on the 1 st , 2 nd and the 3 rd day of water deprivation. Ovulation rate was determined by endoscopy 12 days after oestrus behaviour. Lambing rate and litter size were calculated. Body weight and feed intake were not affected (P>0.05) by water deprivation. However water intake increase in deprived ewes (P<0.01). Reproductive results showed that water deprivation did not affect significantly either the percentage of females in oestrus during the 3 days following ram introduction nor the return rate (80% vs 90% and 13% vs 10% respectively for control and water deprivation groups). Moreover ovulation rate, fertility and litter size were similar for both groups (110% vs 130%, 93.3% vs 100% and 103% vs 123% respectively for control and water deprivation groups). These results indicate the wide adaptation of Barbarine sheep for water deprivation as indicated by the absence of significant negative effects on reproductive performances.Index Terms-Ewe, ovarian activity, reproductive traits, water deprivation.

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Section: Discussionsupporting

confidence: 93%

Effect of Pre-Mating Water Deprivation on Ovarian Activity and on Reproductive Traits of Mature Barbarine Ewes during Summer Season

Khnissi¹,

Lassoued²,

Rekik³

et al. 2014

IJESD

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“…When psychological stress is kept at a minimum, physiological reactions and endocrine changes are mostly related to the intensity of the thermal stress and the heat tolerance of the animals. There is a high variability in the basal cortisol levels among species, breeds and individuals of wild and domestic ungulates (Alvarez and Johnson 1971;Fulkerson et al 1980;Aganga et al 1990). In thermoneutral environments, cattle blood cortisol concentrations varies widely: 1,5-5, 9 μ.dl −1 ; 0,82-2,5 μ.dl −1 ; 1,0-1,6 μ.dl −1 (Ingraham et al 1976;Fulkerson et al 1980;Wise et al 1988 that the breed and individuals are the main source of variation.…”

Section: Discussionmentioning

confidence: 99%

Effect of thermal stress on physiological parameters, feed intake and plasma thyroid hormones concentration in Alentejana, Mertolenga, Frisian and Limousine cattle breeds

et al. 2007

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The aim of the present study was to assess the heat tolerance of animals of two Portuguese (Alentejana and Mertolenga) and two exotic (Frisian and Limousine) cattle breeds, through the monitoring of physiological acclimatization reactions in different thermal situations characterized by alternate periods of thermoneutrality and heat stress simulated in climatic chambers. In the experiment, six heifers of the Alentejana, Frisian and Mertolenga breeds and four heifers of the Limousine breed were used. The increase in chamber temperatures had different consequences on the animals of each breed. When submitted to heat stress, the Frisian animals developed high thermal polypnea (more than 105 breath movements per minute), which did not prevent an increase in the rectal temperature (from 38.7 degrees C to 40.0 degrees C). However, only a slight depression in food intake and in blood thyroid hormone concentrations was observed under thermal stressful conditions. Under the thermal stressful conditions, Limousine animals decreased food intake by 11.4% and blood triiodothyronine (T3) hormone concentration decreased to 76% of the level observed in thermoneutral conditions. Alentejana animals had similar reactions. The Mertolenga cattle exhibited the highest capacity for maintaining homeothermy: under heat stressful conditions, the mean thermal polypnea increased twofold, but mean rectal temperature did not increase. Mean food intake decreased by only 2% and mean T3 blood concentration was lowered to 85,6% of the concentration observed under thermoneutral conditions. These results lead to the conclusion that the Frisian animals had more difficulty in tolerating high temperatures, the Limousine and Alentejana ones had an intermediate difficulty, and the Mertolenga animals were by far the most heat tolerant.

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“…Instead, we observed higher weight gains for treatments including 30 and 50% forage cactus (167 and 153g, respectively) compared to the control diet (106g), strengthening the argument for the value of forage cactus as a water resource. Some authors have evaluated the effect of water restriction on animal performance (AGANGA et al, 1990;ALAMER & Al-HOZAB, 2004) observed that decrease in water consumption reduces the dry matter intake in sheep. This reduction in food consumption results in a decrease in the productive performance of the animal.…”

Section: Resultsmentioning

confidence: 99%

Performance of sheep fed forage cactus with total water restriction

Cordova-Torres

Costa

Medeiros

et al. 2017

Rev. bras. saúde prod. anim.

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SUMMARYA lack of water in livestock production can limit the performance of the animals; therefore, the objective of this study was to evaluate the effect of water restriction on the growth performance of sheep that were fed forage cactus (Nopalea cochenillifera). Forty-two male sheep were used, with an average age and weight of ±100 days and 18.75 ± (2,05) kg , respectively, and they were fed diets containing concentrate, mineral mixture and three levels of substitution (30, 50 and 70%) of Tifton hay with forage cactus (Nopalea cochenillifera). The animals were slaughtered when they reached 32 kg (± 1 kg) of body weight or 90 days. The experimental design was a 3x2 factorial arrangement, forage cactus (30, 50, 70%) x water (with or without water) plus a control group (n=6). Variables were analyzed using Tukey and Dunnett's test at 5% with PROC GLM in SAS software. Voluntary water intake and dry matter intake (DMI) decreased with the inclusion of forage cactus; however, preformed water intake and total water intake increased with the inclusion of forage cactus. Water restriction and its interaction with the treatments had no effect on animal performance. Daily weight gain was higher for the diets with 30 and 50%forage cactus inclusion, at 174 and 155 g, respectively, compared with 90 g for the control diet. Cactus, therefore, can be used as a food supplement and water resource.

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Response to water deprivation by Yankasa ewes under different physiological states

Cited by 23 publications

References 10 publications

Effect of Pre-Mating Water Deprivation on Ovarian Activity and on Reproductive Traits of Mature Barbarine Ewes during Summer Season

Effect of Pre-Mating Water Deprivation on Ovarian Activity and on Reproductive Traits of Mature Barbarine Ewes during Summer Season

Effect of thermal stress on physiological parameters, feed intake and plasma thyroid hormones concentration in Alentejana, Mertolenga, Frisian and Limousine cattle breeds

Performance of sheep fed forage cactus with total water restriction

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