Influences of breed, sex and age on seasonal changes in haematological variables of tropical goat kids

Habibu, B.; Kawu, M.U.; Makun, H.J.; Aluwong, Tagang; Yaqub, L.S.; Dzenda, T.; Buhari, H. U.

doi:10.5194/aab-60-33-2017

Cited by 18 publications

(15 citation statements)

References 36 publications

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“…Sheep sent for grazing exhibited lower Hb, PCV and RBC contents. These results are in line with those reported elsewhere ( Habibu et al., 2017b ; Banerjee et al., 2014 ; Singh et al., 2016 ). Sejian et al.…”

Section: Discussionsupporting

confidence: 94%

Adaptive profiles of Nellore sheep with reference to farming system and season: physiological, hemato-biochemical, hormonal, oxidative-enzymatic and reproductive standpoint

Karthik

Suresh

Reddy

et al. 2021

Heliyon

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This paper outlines the effect of farming systems with reference to season on the body condition score (BCS) and adaptive profile (physiological, hemato-biochemical, hormonal, enzymatic and reproductive parameters) of Nellore sheep. In trial 1, sixty ewe-lambs were allotted to extensive, semi-intensive, and intensive rearing systems (n = 20) and evaluated for BCS at puberty, mating, 2 weeks pre-lambing and 2, 4, 8, and 12 weeks post-lambing. In trial 2, eighteen rams were distributed evenly to three farming systems (n = 6) and evaluated for physiological, hemato-biochemical, hormonal, enzymatic, and reproductive parameters concerning three seasons. Although the scores did not differ among the groups, the Kruskal-Wallis ranks of BCS revealed a higher energy status of intensive ewes at different physiological conditions. The sheep reared under extensive and semi-intensive systems displayed higher temperature, pulse rate and respiratory rate with predominant effects in summer season. Similarly, both systems exhibited higher WBC and lower haemoglobin, PCV, and RBC contents without affecting MVC, MCH, MCHC, and differential leucocyte count. The percent haemoglobin and RBC count were higher in winter compared to summer months, whereas WBC count followed an exactly opposite pattern. The sheep reared in intensive system showed higher glucose, total protein, albumin, cholesterol, T3, T4, calcium, and phosphorus; however, the globulin, creatinine, uric acid, aspartate amino transferase (AST), alanine amino transferase (ALT), superoxide dismutase (SOD), malondialdehyde (MDA), glutathione peroxidase, and catalase levels were elevated in extensive and semi-intensive systems. The dartos muscle extension (DME) and scrotum sweating rate (SSR) were higher for the sheep reared under extensive system, especially during summer season; while the seminal parameters viz., total sperm count, progressive sperm motility, and plasma membrane integrity were lower for extensive and semi-intensive sheep. No interactions were noticed for any of the parameters, except for cortisol, DME, and SSR, which showed significant interactions for rearing system vs. season. Our results showed dynamic adaptive mechanisms of the Nellore sheep in relation to different stressors like grazing for long distances, inadequate nutrition, and heat stress, revealing the heat resilient ability in harsh environmental conditions. Further, the analyzed vector plot showed that the AST, GPx, Cortisol, SOD, Catalase, WBC, PR, T4, total abnormalities, and major abnormalities were the major contributors for adapting during combined stressors.

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Section: Discussionsupporting

confidence: 94%

Adaptive profiles of Nellore sheep with reference to farming system and season: physiological, hemato-biochemical, hormonal, oxidative-enzymatic and reproductive standpoint

Karthik

Suresh

Reddy

et al. 2021

Heliyon

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“…The sheep reared in extensive and semi-intensive farming systems showed higher EOF due to the higher THI. Similar reports were reported elsewhere [ 21 , 23 ]. The stress caused by increased body temperature may enhance the production of free radicals, thereby causing lipid peroxidation.…”

Section: Discussionsupporting

confidence: 92%

Farming systems in sheep rearing: Impact on growth and reproductive performance, nutrient digestibility, disease incidence and heat stress indices

et al. 2021

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The experiment was conducted with an intent to know the effect of different farming systems on the growth performance, nutrient digestibility coefficients, reproductive traits, disease incidence, heat stress indices, and cost economics of Nellore sheep. The study includes two parallel trials to prevent the influence of age on heat stress indices (panting score and erythrocyte osmotic fragility (EOF)). One hundred and twenty lambs (60 ram-lambs and 60 ewe-lambs) were allotted in a randomized block design under extensive, semi-intensive, and intensive systems for trial I, whereas trial II include eighteen rams assigned to the three respective farming systems in a completely randomised design. Both, season (summer) and grazing practice increased the panting score and EOF. The heat stress indices were positively correlated (P<0.01) with dry-bulb temperature and temperature-humidity index (THI) and inversely correlated (P<0.01) to relative humidity. Allotting the sheep to intensive system increased (P<0.001) weight gain and average daily gain with higher effect in males compared to females. The parameters of asymptotic weight (A), integration constant (B), and maturation rate were higher for intensive males. The male Nellore lambs had higher asymptotic weight and lower maturity rate than females, irrespective of the rearing system. Intensive sheep revealed a higher dry matter intake, digestibility coefficients, feed conversion ratio. The instantaneous bite mass (IBM) was higher for Commelina benghalensis, while instantaneous bite frequency (IBF), instantaneous intake rate (IIR) were higher for Cyanodon dactylon and amaranthus viridis, respectively. The proportion of intakes were highest for Stylo hemata followed by Cynodon dactylon and Tridax procumbens species. No differences were observed for the weight at puberty, oestrus cycle length, oestrus duration, conception percent, gestation period, and lambing percent in three rearing systems; however, the age at puberty was lower (P<0.001) and the birth weight was higher (P<0.001) for sheep reared under intensive farming system. Highest disease incidence was observed in rainy and winter seasons, particularly in sheep reared under extensive system. The capital expenditure was same for the three rearing systems, while the recurring expenditure was higher for Intensive farming system. The gross income and net income were higher for intensive system on account of higher weight gains. However, the higher returns per rupee of expenditure project the extensive farming as an ideal rearing system for small farmers and entrepreneurs with a low initial capital.

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“…An increase in BHB in goat blood determined with increased age was within the physiological range, since Doré et al (2015) reported a hypoketonemia definition based on BHB concentrations from ≥ 0.4 to ≥ 0.9 mmol L −1 . According to Herdt (2000) BHB is more likely a reflection of nutritional status and less constrained physiologically.…”

Section: Discussionmentioning

confidence: 99%

Haemato-biochemical profile and acid–base status of Croatian spotted goats of different ages

et al. 2019

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The aim of the present research was to determine the haemato-biochemical profile and blood acid–base status of Croatian spotted goats in a traditional Mediterranean production system. The 60 non-gravid female Croatian spotted goats of different ages were included in the research. They were divided into four groups of 15 goats according to age: group I – ≤1 year old; group II – 2–3 years; group III – 3–6 years; and group IV – 7–10 years. Haematological parameters were determined in whole blood, biochemical parameters in serum and acid–base status in plasma by automatic analyser. Total leukocyte number (WBC), haemoglobin (HGB) and mean corpuscular volume (MCV) in the blood were the highest, while mean haemoglobin concentration in erythrocytes (MCHCs) was the lowest in yearlings compared to other groups. Concentrations of urea, Mg, Cl, non-esterified fatty acids (NEFAs) and lactate were the highest in yearlings. Concentrations of Ca, Na, total cholesterol, high-density lipoprotein (HDL), very low-density lipoprotein (VLDL) and beta hydroxybutyrate (BHB) as well as the activity of alanine aminotransferase (ALT) were higher in older goats compared to yearlings, while the opposite was determined for the activities of creatine kinase (CK) and alkaline phosphatase (ALP). Values of pH, the strong ion difference (SID), anion gap (AG) and z values as well as the content of chemnormalHCOnormal3 and total pressure of carbon dioxide (chemnormalctCOnormal2) were higher in older goats compared to yearlings. The results obtained may help in monitoring the health and nutritional status and improve the management of Croatian spotted goats. Based on the results of the present study, the effect of age needs to be included in the model when preparing the reference values for the haemato-biochemical profile and acid–base status of goats.

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Influences of breed, sex and age on seasonal changes in haematological variables of tropical goat kids

Cited by 18 publications

References 36 publications

Adaptive profiles of Nellore sheep with reference to farming system and season: physiological, hemato-biochemical, hormonal, oxidative-enzymatic and reproductive standpoint

Adaptive profiles of Nellore sheep with reference to farming system and season: physiological, hemato-biochemical, hormonal, oxidative-enzymatic and reproductive standpoint

Farming systems in sheep rearing: Impact on growth and reproductive performance, nutrient digestibility, disease incidence and heat stress indices

Haemato-biochemical profile and acid–base status of Croatian spotted goats of different ages

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