Influence of different periods of exposure to hot environment on rumen function and diet digestibility in sheep

Bernabucci, U.; Lacetera, Nicola; Danieli, Pier Paolo; Bani, Paolo; Nardone, A.; Ronchi, Bruno

doi:10.1007/s00484-009-0223-6

Cited by 93 publications

(69 citation statements)

References 26 publications

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“…Protein digestibility coefficients were similar at different temperatures in our study. Similar findings were also reported by Bernabucci et al (2009).…”

Section: Results and Disussonsupporting

confidence: 92%

“…Bernabucci et al (1999) reported an improvement of diet digestibility during a short time exposure of Holstein heifers to hot conditions, and found that when the exposure was prolonged, the diet digestibility was reduced. Digestibility coefficients of DM, OM, NDF, and ADF in sheep were not affected by short exposure (10 days) but were lower (p<0.01) after prolonged exposure to heat (Bernabucci et al, 2009). Protein digestibility coefficients were similar at different temperatures in our study.…”

Section: Results and Disussonmentioning

confidence: 87%

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Effect of Simulated Heat Stress on Digestibility, Methane Emission and Metabolic Adaptability in Crossbred Cattle

Yadav

Singh

Wankar

et al. 2016

Asian Australas. J. Anim. Sci

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The present experiment was conducted to evaluate the effect of simulated heat stress on digestibility and methane (CH4) emission. Four non-lactating crossbred cattle were exposed to 25°C, 30°C, 35°C, and 40°C temperature with a relative humidity of 40% to 50% in a climatic chamber from 10:00 hours to 15:00 hours every day for 27 days. The physiological responses were recorded at 15:00 hours every day. The blood samples were collected at 15:00 hours on 1st, 6th, 11th, 16th, and 21st days and serum was collected for biochemical analysis. After 21 days, fecal and feed samples were collected continuously for six days for the estimation of digestibility. In the last 48 hours gas samples were collected continuously to estimate CH4 emission. Heat stress in experimental animals at 35°C and 40°C was evident from an alteration (p<0.05) in rectal temperature, respiratory rate, pulse rate, water intake and serum thyroxin levels. The serum lactate dehydrogenase, aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase activity and protein, urea, creatinine and triglyceride concentration changed (p<0.05), and body weight of the animals decreased (p<0.05) after temperature exposure at 40°C. The dry matter intake (DMI) was lower (p<0.05) at 40°C exposure. The dry matter and neutral detergent fibre digestibilities were higher (p<0.05) at 35°C compared to 25°C and 30°C exposure whereas, organic matter (OM) and acid detergent fibre digestibilities were higher (p<0.05) at 35°C than 40°C thermal exposure. The CH4 emission/kg DMI and organic matter intake (OMI) declined (p<0.05) with increase in exposure temperature and reached its lowest levels at 40°C. It can be concluded from the present study that the digestibility and CH4 emission were affected by intensity of heat stress. Further studies are necessary with respect to ruminal microbial changes to justify the variation in the digestibility and CH4 emission during differential heat stress.

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“…Protein digestibility coefficients were similar at different temperatures in our study. Similar findings were also reported by Bernabucci et al (2009).…”

Section: Results and Disussonsupporting

confidence: 92%

Section: Results and Disussonmentioning

confidence: 87%

Effect of Simulated Heat Stress on Digestibility, Methane Emission and Metabolic Adaptability in Crossbred Cattle

Yadav

Singh

Wankar

et al. 2016

Asian Australas. J. Anim. Sci

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show abstract

“…Similar data were reported in goat kids and in lambs by Piccione et al (2011Piccione et al ( , 2013. These findings may be related to the increase of some proteins, especially complement proteins, from this fraction which like the acute phase proteins are involved in the environmental stress response (Bernabucci et al 2009). …”

Section: Discussionsupporting

confidence: 79%

Changes in the serum protein electrophoretic pattern in lambs during the first month of life

et al. 2014

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Studies of the changes in serum protein pattern in the neonatal period in animals are still limited. Therefore, the objective of this study was to evaluate the changes in the concentrations of serum protein fractions in 7 clinically healthy merino lambs (4 males, 3 females) during their first month of life. The first blood sampling was performed before the colostrum intake and then at 1, 2, 7, 14 and 30 days of age. Blood serum was analysed for total serum protein concentrations and for the relative and absolute values of serum protein fractions -albumin, alpha 1 -(α 1 ), alpha 2 -(α 2 ), beta-(β), and gamma-(γ) globulins. The results showed a significant effect of age on the serum total protein concentrations and for all the protein fractions. The concentrations of total proteins and γ-globulins increased significantly 1 day after the colostrum intake (P < 0.001); then decreased gradually till the end of the 1st month. An opposite trend was observed in the concentrations of albumin. A significant decrease of values was found 1 day after the intake of colostrum (P < 0.001) with a subsequent progressive increase of values till the end of the evaluated period. The relative concentrations of α 1 -globulins significantly decreased during the first month of life (P < 0.001). On the other hand, the relative values of α 2 -and β-globulins increased significantly from birth till the end of the monitored period (P < 0.001). Our results suggest that the serum protein electrophoretic pattern in growing lambs is significantly influenced by the age of the evaluated animal, and this should be taken into consideration when interpreting the serum protein profile. Our findings extend existing knowledge about significant changes in the protein profile associated with the physiological adaptation process in the neonatal period in young animals.

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“…Similarly, higher concentrations of β 1 -globulins were found by Piccione et al (2011) in goat kids after birth. This is because the most important proteins included in β 1 -globulin fraction are the complement, which like the acute phase proteins are involved in the environmental stress response (Bernabucci et al 2009). On the other hand, Thomas (2000) stated that higher concentrations of β 1 -globulins in young calves may be a result of suckling.…”

Section: Discussionmentioning

confidence: 99%

Age-related changes in the concentrations of serum proteins in calves

Nagy

Tóthová

Kováč

2014

Journal of Applied Animal Research

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The objective of this study was to describe the physiological differences in serum protein electrophoretic pattern in calves at different ages and nutrition. One hundred and one clinically healthy calves at the age from 2 weeks till 6 months were included into the study. On the basis of their age and age-related feeding management, the calves were divided into five groups (calves at the age of 2 weeks, 1 month, 2, 3-4, and 5-6 months). Blood samples were taken by direct puncture of v. jugularis. Blood serum was analyzed for total serum protein concentrations, the relative and absolute values of protein fractions (albumin, alpha 1 [α 1 ]-, alpha 2 [α 2 ]-, beta 1 [β 1 ]-, beta 2 [β 2 ]-, and gamma [γ]-globulins) with calculation of albumin:globulin ratios. The results showed a significant effect of age and changes in nutrition on the serum total protein (TP) concentrations and the most of protein fractions. Significantly higher relative concentrations of albumin, α-globulins (predominantly α 2 ), as well as β 1 -globulins were found in younger calves compared with older animals (P < 0.001, P < 0.001, and P < 0.001, respectively). On the other hand, the relative values of β 2 -, γ-globulins, and TPs were significantly lower in younger calves than in older ones (P < 0.05, P < 0.001, and P < 0.001, respectively). Therefore, it is essential to determine the physiological serum protein electrophoretic pattern in different age groups of calves, because these reflect the physiological response of animals to changes in nutrition, growth or development. Our results suggest that the age of animals should be taken into consideration when interpreting the serum protein profile.

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Influence of different periods of exposure to hot environment on rumen function and diet digestibility in sheep

Cited by 93 publications

References 26 publications

Effect of Simulated Heat Stress on Digestibility, Methane Emission and Metabolic Adaptability in Crossbred Cattle

Effect of Simulated Heat Stress on Digestibility, Methane Emission and Metabolic Adaptability in Crossbred Cattle

Changes in the serum protein electrophoretic pattern in lambs during the first month of life

Age-related changes in the concentrations of serum proteins in calves

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