Changes in stress-related plasma metabolite concentrations in working Mashona cows on dietary supplementation

Chimonyo, M.; Kusina, N. T.; Hamudikuwanda, H.; Ncube, Ignatious

doi:10.1016/s0301-6226(01)00252-4

Cited by 23 publications

(16 citation statements)

References 9 publications

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“…Chelikani and colleagues (2004) and Leroy and colleagues (2004) reported plasma glucose levels close to 850 mg/l respectively in 16 months and adult females from Holstein type. Chimonyo and colleagues (2002) found, in adult Mashona females grazing on poor pasture, values of 774 mg/l. The glucose concentration in the plasma of the present females was smaller at 731.4 mg/l.…”

Section: Discussionmentioning

confidence: 92%

Variation of plasma parameters and nitrogen metabolism in finishing Belgian Blue double‐muscled cull females

Cabaraux

Dufrasne

Istasse

et al. 2005

Animal Physiology Nutrition

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The changes over time in plasma parameters and nitrogen metabolism were studied in finishing Belgian Blue double-muscled females offered a maize silage based diet. When compared with literature data, plasma glucose along with triglycerides concentrations was low while non-esterifled fatty acids were high and rich in polyunsaturated forms. The concentrations in thyroid hormones, insulin-like growth factor 1 and insulin were also low and plasma insulin decreased with time. Growth hormone concentration, by contrast, increased with time. On average, the females retained 44 g nitrogen per day from an intake of 210 g but the efficiency of retention decreased with time. The fractional rates of accretion and synthesis of muscle protein were also affected by time. The dry matter content in muscle biopsies was close to 22% and increased with the finishing, as did the diameter of the tailhead adipocytes.

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Section: Discussionmentioning

confidence: 92%

Variation of plasma parameters and nitrogen metabolism in finishing Belgian Blue double‐muscled cull females

Cabaraux

Dufrasne

Istasse

et al. 2005

Animal Physiology Nutrition

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“…The greater urea levels observed in the IP group at day 12 may be associated with higher protein intake (Chimonyo et al., 2002) or with an asynchrony in ruminal release of availability of energy and nitrogen as suggested by degradation kinetics of DM and nitrogen of Lotus subbliflorus cv Rincon (Trujillo et al., 2009). Greater levels of NEFA at the end of the nutritional treatments were associated with heavier calves in IP cows.…”

Section: Discussionmentioning

confidence: 99%

Effects of a short‐term increase in the nutritional plane before the mating period on metabolic and endocrine parameters, hepatic gene expression and reproduction in primiparous beef cows on grazing conditions

Astessiano

Pérez-Clariget

Quintans

et al. 2011

Animal Physiology Nutrition

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Sixty-four spring-calved primiparous crossbred cows paired by calving date and body condition score (BCS) at calving were used to study the effect of a short-term increase in the nutritional plane before the mating period on cow and calf performance, changes in metabolic and endocrine parameters and hepatic gene expression. At 48 ± 10 days post-partum (onset of nutritional treatment = day 0), cows were assigned to two treatments during 23 days: control (grazing of native pastures; NP; n = 31) and increased nutritional plane (NP improved with Lotus subbiflorous cv Rincon; IP; n = 33). Cow body weight (BW), BCS and total protein and albumin concentrations increased while urea and non-esterified fatty acids levels decreased from the beginning of the nutritional treatment in both groups, indicating the animal positive energy balance as forage growth and availability of pastures increased during spring. In addition, cow BW and BCS, as well as calf average daily gain and BW, were greater in IP than in NP cows groups. Insulin concentrations were less in IP than in NP (1.37 vs. 2.25 ± 0.26 μU/ml) because insulin increased owing to nutritional treatment only in NP cows. Hepatic insulin receptor mRNA at day 23 tended to be 1.5-fold greater, while insulin growth factor binding protein-3 mRNA expression was 1.7-fold greater in NP than in IP cows. Reproductive responses were not affected by nutritional treatment, but days to initiation of ovarian ciclicity (108 ± 10 days) were positively correlated with insulin concentrations. Grazing of improved NP for 23 days before the mating period did not improve cow reproductive performance but modified metabolic, endocrine and gene expression parameters, in agreement with greater nutrient and energy partitioning towards milk production, reflected in better calf performance.

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“…Angus steers had the lowest body weights from weaning, most probably due to poor performance on natural pasture. Though body weights are traditionally used to assess nutritional status of animals (Chimonyo et al 2002), they vary with breed size, gut fill and tissue hydration (NRC 1996). Angus is a large framed breed and was, therefore, expected to have higher body weights as compared to medium and small sized breeds (Chilliard et al 2000;Blanc et al 2004).…”

Section: Discussionmentioning

confidence: 99%

Monthly changes in body condition scores and internal parasite prevalence in Nguni, Bonsmara and Angus steers raised on sweetveld

Ndlovu

Chimonyo

Muchenje

2009

Trop Anim Health Prod

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The objective of the study was to determine monthly changes in body condition scores, body weights and on the prevalence of internal parasites in Nguni, Bonsmara and Angus steers raised on sweetveld. Body condition scores (BCS), body weights (BW), packed cell volume (PCV) and monthly faecal egg counts (FEC) were determined in 25 Nguni, 15 Bonsmara and 15 Angus steers. Nguni and Bonsmara steers maintained their body condition throughout the study, while the Angus lost condition. The Nguni had the highest PCV levels. The PCV levels tended to decline during the rainy season for all the breeds. The FEC were generally low. Fasciola spp. and strongyle eggs were found in 16.3 and 54.6% of the collected faecal samples, respectively. Of the three breeds, Nguni steers had the lowest parasite infestation levels, with the Bonsmara being more susceptible than the other two breeds. Generally, the egg counts observed throughout the study were low.

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Changes in stress-related plasma metabolite concentrations in working Mashona cows on dietary supplementation

Cited by 23 publications

References 9 publications

Variation of plasma parameters and nitrogen metabolism in finishing Belgian Blue double‐muscled cull females

Variation of plasma parameters and nitrogen metabolism in finishing Belgian Blue double‐muscled cull females

Effects of a short‐term increase in the nutritional plane before the mating period on metabolic and endocrine parameters, hepatic gene expression and reproduction in primiparous beef cows on grazing conditions

Monthly changes in body condition scores and internal parasite prevalence in Nguni, Bonsmara and Angus steers raised on sweetveld

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