Relaciones entre calcio, ácidos grasos no esterificados, e insulina sanguínea en preparto y leche bovina perdida en el inicio de la lactancia

Ordaz, Reyes López; Pérez, Tomás Tinajero; Martínez, Germán David Mendoza; Montiel, Juan de Dios Roldán; Aranda, Adelfo Vite; Ruíz-Flores, Agustín

doi:10.21640/ns.v9i19.1053

Cited by 2 publications

(3 citation statements)

References 39 publications

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“…In the case of estimating milk production for period three (P3), the variables involved, especially DMS, show that as lactation progresses for more than 180 days, the animals substantially improve body condition, as well as same energy metabolic indicators (NEFA, BHB), which gives as a response better reproductive efficiency observed in the intervals between births and services per conception. This efficacy in the NEB is consistent with the reports presented by García et al (2011), López et al (2017, and David et al (2018). In addition, it is important to highlight that the dietary scheme of dairy cows described in Table 1 favored that they do not present major changes in metabolic indicators during the periods evaluated.…”

Section: Milk Production P2supporting

confidence: 89%

Metabolic indicators and their relationship with reproductive efficiency in dairy cows in the high tropics

Zambrano-Burbano

Gaona

2023

rcia

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The specialized herds of the high tropics of Nariño are characterized by semi-intensive breeding models, that is, feeding based on grazing and supplementation. The objective was to analyze the milk production of grazing Holstein cows under conditions of the high tropics, taking into account the energetic and protein metabolites, and their relationship with the dry matter intake (CMS/Kg/d), the body condition (BC), and the reproductive variables. Three periods of lactation were evaluated, thus, between 4-10 days (P1), 45-55 days (P2), and between 185-200 days (P3). The investigation was carried out in four dairy production farms. The forage supply consisted of a mixture of Lolium hybridum, Cenchrus clandestinus Hoschst ex Chiov, Holcus lanatus and Trifolium repens, plus commercial concentrate. A total of 24 Holstein animals (six per productive system) from three births onwards were used, from which blood samples were obtained to determine: non-esterified fatty acids (NEFA), beta-hydroxybutyrate (BHB), triglycerides, cholesterol, glucose, total protein (PT), and blood urea nitrogen (BUN). The results showed that milk production during P1 is influenced by CC and body weight (Kg) by +0.04 liters of milk per unit of change in this variable. In P2, the positive incidence variables were PT, BUN, glucose, NEFA, BHB, triglycerides, and cholesterol, and in P3, the increase in CMS made it possible to show that as lactation progresses in more than 180 days, the animals substantially improve their body condition; likewise the NEFA and BHB indicators are related to a better reproductive response.

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Section: Milk Production P2supporting

confidence: 89%

Metabolic indicators and their relationship with reproductive efficiency in dairy cows in the high tropics

Zambrano-Burbano

Gaona

2023

rcia

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“…BHBA, Ca 2+ , and NEFA levels in blood serum were dichotomized and evaluated individually against MY on d 7 and 14 after calving. Dummy variables of MY and BCS were defined following procedures published by López-Ordaz et al (16) . For BCS, the cows were classified as moderate (2.25 to 3.25), and fat (≥ 3.5).…”

Section: Discussionmentioning

confidence: 99%

“…When the differences were significant between cows, the orthogonal contrasts test was used to establish the magnitude of the differences. and where referred to as 0, -1 and 1, respectively, based on the discrete variables reported by López-Ordaz et al (16) .…”

Section: Discussionmentioning

confidence: 99%

Relationships among ß-hydroxybutyrate, calcium and non-esterified fatty acids in blood with milk yield losses at early lactation

López-Ordaz

Perez-Hernandez

Ramírez

et al. 2021

Rev. Mex. Cienc. Pecu.

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The objectives were to study the associations of concentrations of β-hydroxybutyrate acid (BHBA), calcium (Ca2+), and non-esterified fatty acids (NEFA) in blood serum 7 d prepartum with losses in milk yield (MY) and metabolic dysfunctions at seven and 14 d of lactation. Three hundred and thirty-six (336) Holstein-Friesian (780 ± 36 kg BW; which had lactated more than twice) were sampled by coccygeal venipuncture, 7 d before, and 7 and 14 d after parturition. For each sample and metabolite serum concentrations were stratified in thresholds and related to MY. When BHBA levels were high 7 d before parturition and were related to MY at d-7 postpartum, it was observed that 11.00 % of the cows lost 0.370 kg d-1 of milk. In contrast, no relationship was observed between BHBA prepartum and MY on d-14 of lactation. It was not observed any association between high NEFA and low Ca2+ levels prepartum and MY. NEFA concentrations ≥ 0.5 mmol L-1 on d-7 before calving were 7.6 more susceptible for lameness incidence (P≤ 0.01), and when BHBA ≥ 0.8 mmol L-1 cows were 2.4 times more likely to develop ketosis (P≤0.05) in the first 60 d in milk. In brief, data indicate that a high proportion of cows are above the thresholds of β-hydroxybutyrate and non-esterified fatty acids, and are also deficient in calcium, when determined one week before parturition. The risk thresholds for each metabolite were not associated with the amount of milk lost at d-14 after calving.

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Relaciones entre calcio, ácidos grasos no esterificados, e insulina sanguínea en preparto y leche bovina perdida en el inicio de la lactancia

Cited by 2 publications

References 39 publications

Metabolic indicators and their relationship with reproductive efficiency in dairy cows in the high tropics

Metabolic indicators and their relationship with reproductive efficiency in dairy cows in the high tropics

Relationships among ß-hydroxybutyrate, calcium and non-esterified fatty acids in blood with milk yield losses at early lactation

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