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Felini R, Cavallini D, Buonaiuto G, Bordin T. Assessing the impact of thermoregulatory mineral supplementation on thermal comfort in lactating Holstein cows. Vet Anim Sci 2024; 24:100363. [PMID: 38883423 PMCID: PMC11177189 DOI: 10.1016/j.vas.2024.100363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/18/2024] Open
Abstract
Heat stress (HS) occurs when animals are enable to effectively dissipate excessive body heat, potentially affecting their welfare and productivity. Several tools can be used to mitigate HS in dairy cows. The aim of this study was to evaluate the effect of thermoregulatory mineral supplementation on dairy cows' physiological response to HS and reproductive status. Thirty pluriparous Holstein dairy cows (2.8 ± 0.3 lactation), from a semi confinement production system (freestall barn), were enrolled in a 35 days duration experiment, and divided into two groups: 15 cows receiving a thermoregulatory mineral mixture containing calcium, sodium, chlorine, and potassium (200 g/day; TRT); and, 15 cows that did not receive any type of supplement (CON). Data on respiration rates (RR), rectal temperature (RT), milk yield, barn temperature, relative humidity, and temperature and humidity index (THI) were obtained on weekly evaluations (D7, D14, D21, D28, and D35). ANOVA and correlation analysis were used to compare variables between groups, and physiological and climate variables, regardless of group. Related to farm's protocols, on D0 and D35, all cows were submitted to US evaluation and categorized as inseminated, pregnant, and not pregnant, and this data analysed using Fisher's exact test. Cows in the TRT group had lower RT, compared to the CON group (38,8 °C and 39,0 °C, respectively; P = 0.0147), however both averages were within physiological range. As to physiological variables, stronger positive correlations were found between RR and RT with barn temperature and THI. In this study, the thermoregulatory mineral supplement did not significantly affect physiological responses to HS or reproductive status.
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Affiliation(s)
- Rafael Felini
- Curso de Agronomia, Faculdade CESURG Marau, Avenida Júlio Borella, 1968, Centro, CEP 99150-000, Marau, RS, Brasil
| | - Damiano Cavallini
- Department of Veterinary Sciences, University of Bologna, Ozzano dell'Emilia, 40064, Bologna, Italy
| | - Giovanni Buonaiuto
- Department of Veterinary Sciences, University of Bologna, Ozzano dell'Emilia, 40064, Bologna, Italy
| | - Tiago Bordin
- Curso de Agronomia, Faculdade CESURG Marau, Avenida Júlio Borella, 1968, Centro, CEP 99150-000, Marau, RS, Brasil
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Lean IJ, Golder HM. Milk as an indicator of dietary imbalance. Aust Vet J 2024; 102:19-25. [PMID: 37779436 DOI: 10.1111/avj.13294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 09/10/2023] [Indexed: 10/03/2023]
Abstract
BACKGROUND Milk provides a readily available diagnostic fluid collected daily or more frequently on an individual animal or herd basis. Milk, as an aggregated sample in bulk tank milk (BTM) represents the status of a herd instead of a single animal. In this review, we examine the potential for milk to predict risks to efficient production, reproductive success, and health on the individual cow and herd level. FINDINGS For many conditions related to disorders of metabolism including hyperlipdaemia and ketonaemia, improved individual cow milk testing may allow a temporally useful detection of metabolic disorder that can target intervention. However, the extension of these tests to the BTM is made more difficult by the tight temporal clustering of disorder to early lactation and the consequent mixing of cows at even moderately different stages of lactation. Integrating herd recording demographic information with Fourier-transformed mid-infrared spectra (FT-MIR) can provide tests that are useful to identify cows with metabolic disorders. The interpretation of BTM urea and protein content provides useful indications of herd nutrition. These may provide indicators that encourage further investigations of nutritional influences on herd fertility but are unlikely to provide strong diagnostic value. The fat-to-protein ratio has a high specificity, but poor sensitivity for detection of fibre insufficiency and acidosis on an individual cow basis. Selenium, zinc, β-carotene, and vitamin E status of the herd can be determined using BTM. CONCLUSIONS There appears to be increasing potential for the use of milk as a diagnostic fluid as more in-parlour tests become available for individual cows. However, the BTM appears to have under-utilised potential for herd monitoring.
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Grants
- This paper is part of Dairy UP (www.dairyup.com.au), an industry driven program led by the University of Sydney's Dairy Research Foundation (DRF, Camden, NSW, Australia); co-delivered together with Scibus (Camden, NSW, Australia), the New South Wales Department of Primary Industry (Orange, NSW, Australia), and Dairy Australia (Southbank, VIC, Australia); and supported by the NSW Government, Australian Fresh Milk Holding Ltd. (Gooloogong, NSW, Australia), Bega Cheese (Bega, NSW, Australia), Dairy Australia (Southbank, VIC, Australia, DairyNSW (Camden, NSW, Australia), DRF (Camden, NSW, Australia), eastAUSmilk (Brisbane, QLD), Local Land Services (Hunter; Tocal, NSW, Australia), Leppington Pastoral Co. (Bringelly, NSW, Australia), Norco Dairy Co-Op (South Lismore, NSW, Australia), NSW Farmers (St Leonards, NSW, Australia), the NSW Department of Primary Industries (Menangle, NSW, Australia), Scibus, and South East Local Land Services (Goulburn, NSW, Australia).
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Affiliation(s)
- I J Lean
- Scibus, Camden, New South Wales, Australia
- Dairy UP, The University of Sydney, Camden, New South Wales, Australia
| | - H M Golder
- Scibus, Camden, New South Wales, Australia
- Dairy UP, The University of Sydney, Camden, New South Wales, Australia
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Chandler TL, Westhoff TA, LaPierre PA, Frizzarini W, Hernandez LL, Overton TR, Mann S. Eucalcemia during lipopolysaccharide challenge in postpartum dairy cows: II. Calcium dynamics. J Dairy Sci 2023; 106:3601-3614. [PMID: 37002137 DOI: 10.3168/jds.2022-22775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 12/10/2022] [Indexed: 03/31/2023]
Abstract
Hypocalcemia induced by immune activation is a conserved response among mammals. Early postpartum cows will experience decreased circulating Ca concentrations following acute immune activation; however, the cause for decreased Ca concentration is unknown. Our objectives were to (1) describe Ca dynamics following an intravenous (IV) LPS challenge in early postpartum cows, and (2) compare inflammatory-induced changes in Ca dynamics between IV Ca-treated cows and control cows. Cows (n = 14, 8 ± 1 d in milk) were enrolled in a matched-pair randomized controlled design to receive IV Ca (IVCa) in a eucalcemic clamp for 12 h, or 0.9% NaCl (CTRL) following an IV LPS infusion (0.040 or 0.045 µg of LPS/kg of body weight over 1 h). During the 24 h following LPS infusion, circulating concentrations of parathyroid hormone and serotonin were measured, serum and urine samples were collected to calculate urinary fractional excretion of Ca (FECa), and fecal samples were collected to calculate Ca apparent digestibility (ADCa) using amylase-treated and ash-corrected undigested neutral detergent fiber after 240 h (uNDFom240) as an internal marker. Changes in Ca intake and milk Ca secretion were also quantified and compared with baseline values. Cows were fasted during challenge and dry matter intake was 20 ± 5% less than baseline values on the day of challenge and did not differ between groups. On the day of challenge, milk Ca concentration increased, but milk yield decreased such that total Ca secreted in milk did not change from baseline. Urine FECa was low overall, but an interaction of treatment and time was identified such that FECa increased in IVCa but decreased in CTRL. Concentrations of parathyroid hormone increased and serotonin decreased following challenge. Fecal dry matter decreased from baseline, but did not differ between 6, 12, and 24 h, and did not differ between groups. An interaction of treatment and time was identified for ADCa and apparent digestibility of dry matter such that digestibility was decreased in CTRL but not IVCa at 6 h. Acute immune activation induced hypocalcemia in CTRL, and although urinary Ca excretion was not a primary cause, it is unclear to what degree hypocalcemia was due to altered ADCa. Eucalcemia appeared to alter adaptations in Ca homeostasis during immune activation as FECa was increased in IVCa animals.
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Affiliation(s)
- T L Chandler
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853.
| | - T A Westhoff
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853
| | - P A LaPierre
- Department of Animal Science, College of Agriculture and Life Sciences, Cornell University, Ithaca, NY 14853
| | - W Frizzarini
- Department of Animal and Dairy Sciences, College of Agriculture and Life Sciences, University of Wisconsin, Madison 53706
| | - L L Hernandez
- Department of Animal and Dairy Sciences, College of Agriculture and Life Sciences, University of Wisconsin, Madison 53706
| | - T R Overton
- Department of Animal Science, College of Agriculture and Life Sciences, Cornell University, Ithaca, NY 14853
| | - S Mann
- Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853
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Sizova EA, Miroshnikov SA, Notova SV, Marshinskaya OV, Kazakova TV, Tinkov AA, Skalny AV. Serum and Hair Trace Element and Mineral Levels in Dairy Cows in Relation to Daily Milk Yield. Biol Trace Elem Res 2022; 200:2709-2715. [PMID: 34476676 DOI: 10.1007/s12011-021-02878-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 08/06/2021] [Indexed: 10/20/2022]
Abstract
The objective of the present study was to assess hair and serum trace element and mineral levels in dairy cows in relation to daily milk yield. A total of 70 healthy 5-6-year-old Simmental cows were divided into two groups (n = 35) with high and low daily milk yield using median as a cut-off value. Hair and serum trace element and mineral content was evaluated using inductively coupled plasma mass-spectrometry. A nearly twofold difference in daily milk yield (43.8 ± 9.7 vs 21.3 ± 7.1 L/day, p < 0.001) was significantly associated with 11% lower hair Cu (p = 0.043) and 35% higher Se levels (p = 0.058) content when compared animals with lower daily milk yield. Serum trace element levels were found to be more tightly associated with milk productivity in dairy cows. Particularly, serum levels of Se and Zn were found to be 73 and 35% higher in cows with higher milk productivity in comparison to animals with lower milk production, respectively. Serum Co levels also tended to increase with higher milk productivity. Serum minerals including Ca, Mg, and P were also found to be higher in highly productive cows by 6%, 14%, and 71%, respectively. The overall regression model based on serum trace element and mineral levels accounted for 38% of daily milk production variability. Generally, improvement of essential trace element and mineral supply, as well as prevention of copper overload in dairy cows, may be considered the potential tool for modulation of milk productivity.
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Affiliation(s)
- Elena A Sizova
- Federal Research Centre of Biological Systems and Agro-technologies of the Russian Academy of Sciences, 9 Yanvarya St., 29, Orenburg, 460000, Russia
| | - Sergey A Miroshnikov
- Federal Research Centre of Biological Systems and Agro-technologies of the Russian Academy of Sciences, 9 Yanvarya St., 29, Orenburg, 460000, Russia
- Orenburg State University, Pobedy Ave., 13, Orenburg, 460000, Russia
| | - Svetlana V Notova
- Federal Research Centre of Biological Systems and Agro-technologies of the Russian Academy of Sciences, 9 Yanvarya St., 29, Orenburg, 460000, Russia
- Orenburg State University, Pobedy Ave., 13, Orenburg, 460000, Russia
| | - Olga V Marshinskaya
- Federal Research Centre of Biological Systems and Agro-technologies of the Russian Academy of Sciences, 9 Yanvarya St., 29, Orenburg, 460000, Russia
| | - Tatiana V Kazakova
- Federal Research Centre of Biological Systems and Agro-technologies of the Russian Academy of Sciences, 9 Yanvarya St., 29, Orenburg, 460000, Russia
| | - Alexey A Tinkov
- Federal Research Centre of Biological Systems and Agro-technologies of the Russian Academy of Sciences, 9 Yanvarya St., 29, Orenburg, 460000, Russia
- IM Sechenov First Moscow State Medical University (Sechenov University), Bolshaya Pirogovskaya St., 2-4, Moscow, 119146, Russia
| | - Anatoly V Skalny
- Federal Research Centre of Biological Systems and Agro-technologies of the Russian Academy of Sciences, 9 Yanvarya St., 29, Orenburg, 460000, Russia.
- IM Sechenov First Moscow State Medical University (Sechenov University), Bolshaya Pirogovskaya St., 2-4, Moscow, 119146, Russia.
- K.G. Razumovsky Moscow State University of Technologies and Management, Zemlyanoi Val St., 73, Moscow, 109004, Russia.
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Wild KJ, Siegert W, Windisch WM, Südekum KH, Rodehutscord M. Meta-analysis-based estimates of efficiency of calcium utilisation by ruminants. Animal 2021; 15:100315. [PMID: 34311192 DOI: 10.1016/j.animal.2021.100315] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 06/11/2021] [Accepted: 06/15/2021] [Indexed: 10/20/2022] Open
Abstract
The most abundant mineral in the body of animals is Ca, which has crucial importance for the regulation of various processes. The maintenance of Ca balance has become more challenging, especially in lactating ruminants, owing to the increased milk yields and thus Ca requirement. To determine the Ca requirement, factors such as Ca secretion via milk or Ca deposition in body tissues and conception products are summed up to the net Ca requirement. Nevertheless, dietary Ca cannot be completely utilised by the animal to cover the net Ca requirement, therefore a value for the efficiency of Ca utilisation is applied, which is the maximum proportion of Ca from the feed that the animal can use for covering the net requirement. However, current estimates for the efficiency of Ca utilisation are inconsistent. Therefore, the objective of the present meta-analysis was to estimate the efficiency of Ca utilisation for ruminants, considering the Ca supply of the animal. A data set of 223 observations was compiled from 37 studies, including data on cattle and small ruminants. Standardised Ca digestibility was calculated from data on Ca intake and faecal Ca excretion, corrected for faecal endogenous losses. Furthermore, a data subset on only lactating ruminants was created. For this subset, Ca excretion via faeces and urine and standardised Ca digestibility were related to the Ca supply of the animal. An exponential function was fitted to standardised digestibility data in response to Ca concentration in the diet and Ca supply, revealing that standardised Ca digestibility decreased with increasing dietary Ca concentration and Ca supply. The median for standardised Ca digestibility was 40%, with a remarkable variation between 9% and 88%. In response to Ca supply, faecal Ca excretion increased in a strong linear manner (slope = 0.76, R2 = 0.96). Excretion of Ca via urine was very low even when Ca supply was very high. To conclude, Ca digestibility is a suitable indicator for the efficiency of Ca utilisation, since excessive Ca is almost completely excreted in faeces; however, Ca digestibility has to be determined at a Ca supply level below the requirement of the animal. To date, only very limited number of data have been reported for such supply conditions. Comparative studies using various Ca sources are suggested for future studies but should be conducted using a marginal Ca supply level.
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Affiliation(s)
- K J Wild
- Institute of Animal Science, University of Hohenheim, 70599 Stuttgart, Germany
| | - W Siegert
- Institute of Animal Science, University of Hohenheim, 70599 Stuttgart, Germany
| | - W M Windisch
- Chair of Animal Nutrition, TUM School of Life Sciences Weihenstephan, Technical University of Munich, 85354 Freising, Germany
| | - K-H Südekum
- Institute of Animal Science, University of Bonn, 53115 Bonn, Germany
| | - M Rodehutscord
- Institute of Animal Science, University of Hohenheim, 70599 Stuttgart, Germany.
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Starič J, Hodnik JJ. Biochemical Bone Markers During the Transition Period Are Not Influenced by Parenteral Treatment With a High Dose of Cholecalciferol but Can Predict Milk Fever in Dairy Cows. Front Vet Sci 2021; 7:591324. [PMID: 33614755 PMCID: PMC7892589 DOI: 10.3389/fvets.2020.591324] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 12/22/2020] [Indexed: 11/13/2022] Open
Abstract
Despite being studied extensively, there are still many knowledge gaps in milk fever prevention and it is still a prevalent disease. Various interventions have been used in its prevention; however, none has proven to be entirely effective. The study aimed to assess the effectiveness of high dose vitamin D3 parenteral (intramuscularly) administration and the mechanism of its action by studying blood minerals and biochemical bone markers. Further, we assessed the potential of biochemical bone markers, measured in the close-up dry period, as predictors of clinical milk fever after calving. The study was conducted on 56 high yielding, clinically healthy dairy cows, before their 4th or higher lactation. They were divided into three groups based on season (summer and winter) and administration (vitamin D). The winter group was considered as the control group. Cows (n = 13) were parenterally administered a single dose of 10 million IU of vitamin D3 (DUPHAFRAL® D3) ranging between 10 and 2 days before calving (median = 3 days). Each cow was blood sampled once during four sampling period ranges: ~1 month before calving, 10 to 2 days before calving, 12–48 h after calving and 10–20 days after calving. The samples were analyzed for blood minerals, bone specific alkaline phosphatase (bALP) and C-terminal telopeptide of type I collagen (CTx), alkaline phosphatase, and estradiol. Values were compared between samplings and groups. A receiver operating characteristic (ROC) analysis and logistic regression were used to assess the diagnostic accuracy of biochemical bone markers in predicting milk fever. In this study high dose vitamin D3 supplementation did not statistically reduced the incidence of milk fever (milk fever incidences were 15.4, 39.1, and 25% in the vitamin D, winter and summer groups, respectively). A significant effect of vitamin D3 administration on blood minerals or biochemical bone markers was not found at any sampling. We found that the use of biochemical bone markers in the close-up dry period to predict clinical milk fever was applicable only in the winter (housed) group. The area under the curve (AUC) for bALP was 0.804 and 0.846 for CTx using ROC analysis. The bALP curve had the best ratio at the cut-off point 13.85 U/L with 90% sensitivity and 64.3% specificity. While CTx had the ratio of 90% sensitivity and 78.6% specificity at the cut-off point 0.149 ng/mL. Close-up dry dairy cows with CTx ≥0.121 ng/mL had a 3.8 times higher chance of succumbing to milk fever. We were unable to prove that high dose vitamin D3 parenteral administration is a viable technique for milk fever prevention. Biochemical bone markers are a promising tool for predicting milk fever; however, further studies are needed to confirm their clinical use.
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Affiliation(s)
- Jože Starič
- Clinic for Reproduction and Large Animals - Section for Ruminants, Veterinary Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Jaka Jakob Hodnik
- Clinic for Reproduction and Large Animals - Section for Ruminants, Veterinary Faculty, University of Ljubljana, Ljubljana, Slovenia
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