Suplementación con glicerina cruda y afrechillo de arroz entero a vacas de carne pastoreando campo natural

Clariget, Juan Manuel; Pérez-Clariget, Raquel; Álvarez-Oxiley, Andrea; Bentancur, O.; Bruni, María de los Ángeles

doi:10.31285/agro.20.2.15

Cited by 4 publications

(3 citation statements)

References 14 publications

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“…This occurred even considering that the composition of the supplement was within the recommendations for the application of an energy‐based CF (Lardy & Maddock, 2007). One explanation may be associated with the fat content of rice bran, considering that its energy value depends on the quality and composition of the batch, as well as other factors such as gender and age of the animal (Clariget et al, 2010; Varona et al, 2021). In adult ruminants, the percentage of rice bran should not exceed 1% of the live weight (Gadberry et al, 2004).…”

Section: Discussionmentioning

confidence: 99%

“…These strategies are based on increasing energy income (flushing with pastures and concentrates) and reducing the energy output of the cow (suckling management and creep feeding [CF]) (Viñoles et al, 2009). Flushing cows for 52 days pre‐partum or 22 days at the beginning of the breeding season with whole rice bran results in an increase in metabolites, metabolic hormones and early pregnancy (Clariget et al, 2010; Soca et al, 2013). It is well known that suckling restriction (e.g., temporary weaning [TW]) improves the pregnancy rate in cows with moderate body condition scores (BCS), due to a reduction in milk production and an increase in metabolic hormones (Quintans et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…However, the economic benefit of supplementing nursing calves is largely dependent on the cost of the diet, among other factors. Whole rice bran is a subproduct of the industry that is widely used for cattle in South America to supplement poor‐quality herbage, showing excellent results in beef cows and heifers/steers during the rearing period (Clariget et al, 2010; Viñoles et al, 2009). However, it is not yet known whether the use of rice bran to supplement calves in a CF system is a viable alternative, as the effects of the supplement on their performance and that of their dams are not known.…”

Section: Introductionmentioning

confidence: 99%

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Effect of creep feeding with rice bran and temporary weaning on cow–calf performance

Fedrigo

Cruz

Silva

et al. 2022

Animal Physiology Nutrition

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This study was conducted to investigate if calves supplemented with rice bran in a creep feeding (CF) system associated with temporary weaning (TW) affects the performance of the cow–calf pair grazing natural grasslands during summer. Two experiments were performed using 275 cow–calf pairs of British breeds and their crosses of different parities (primiparous [n = 188] in Experiment 1 and multiparous [n = 87] in Experiment 2). In both experiments, the factors evaluated were: (1) supplementation of calves with rice bran using CF: yes (+CF) or no (−CF); (2) TW for 14 days using nose plates: yes (+TW) or no (−TW). Four experimental groups were formed in both experiments: −CF − TW, −CF + TW, +CF − TW and +CF + TW. TW decreased the average daily weight gain and live weight of calves independently of the age of their mothers. The use of CF decreased both of these parameters in calves born to primiparous cows, and there was no response in the case of calves born to multiparous cows. A greater proportion of primiparous cows that received +CF conceived in the first 21 days of mating (+CF − TW = 63.5% and +CF + TW = 50%) than the other groups. The final pregnancy rate was similar among groups in both experiments. In conclusion, TW decreased the average daily weight gain and weaning weight of calves. Supplementation of calves born to primiparous cows with rice bran decreased their daily weight gain during the period of TW and their weaning weight, but their dams were conceived earlier.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of creep feeding with rice bran and temporary weaning on cow–calf performance

Fedrigo

Cruz

Silva

et al. 2022

Animal Physiology Nutrition

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Influence of low pasture allowance during pregnancy on the attachment between ewes and their lambs at birth and during lactation

Freitas‐de‐Melo

Terrazas

Ungerfeld

et al. 2018

Applied Animal Behaviour Science

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Effects on biodiversity in semi-natural pastures of giving the grazing animals access to additional nutrient sources: a systematic review

Jakobsson,

Envall,

Bengtsson

et al. 2024

Environ Evid

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Background Traditionally managed semi-natural pastures are recognised for their high biodiversity. One drawback is that these pastures are often low in fodder production and hence rather unprofitable, which may lead to abandonment. Two ways to increase production and profitability and maintain grazing are to (i) offer the grazers supplementary feed, or (ii) co-enclose the semi-natural pasture with an improved pasture. Both practices may transfer nutrients to the semi-natural pasture, with potential negative effects on biodiversity. This systematic review aimed to analyse the available evidence concerning the following primary question: “What is the effect of giving grazers access to additional nutrient sources on biodiversity in semi-natural pastures?” (Q1). We also used two supporting questions: “What is the effect of giving grazers access to additional nutrient sources on nutrient status of the soils of semi-natural pastures?” (Q2) and “How do the grazers of semi-natural pastures behave while having access to additional nutrient sources?” (Q3). Methods Searches for peer-reviewed and grey literature were made using bibliographic databases, search engines, specialist websites, and stakeholder contacts. Literature was screened for relevance according to predefined eligibility criteria, and critical appraisal was performed using the tool CEECAT. A database of the relevant studies was compiled. Descriptive information about the evidence base is presented in tables and an interactive evidence atlas. Because of absent study setup replication, Q1 and Q2 were not analysed quantitatively. However, sample size allowed the use of mixed modelling to quantitatively analyse Q3 regarding the effects of (i) co-enclosing an improved pasture on grazers’ electivity for the improved area, and (ii) supplementary feed on the forage intake of grazers. Review findings A total of 12 articles on the effects of supplementary feeding and 19 on the effects of co-enclosing an improved pasture were included, of which some targeted multiple review questions. Because of the limited literature, it is not possible to draw any conclusions concerning the effects on biodiversity (Q1) or nutritional status (Q2) in semi-natural pastures. For Q3, 28 studies fulfilled our criteria, of which 18 investigated the behaviour of grazers related to co-enclosing an improved pasture, and 10 investigated their forage intake while having access to supplementary fodder. The results show that all grazer species except goats preferred grazing in the improved areas regardless of whether they were grazing together with other grazer species or not. We found no effect of supplementary feeding on forage intake of the grazers. Conclusions We detected a knowledge gap concerning the effects of the two additional nutrient sources on semi-natural pasture biodiversity (Q1) and nutrient status (Q2), which points toward further research needs. Analysis of Q3 showed that grazers prefer to graze improved compared to semi-natural pasture areas. However, how this behaviour subsequently affects nutrient transport and biodiversity is unclear and cannot be translated into management recommendations. To gain better knowledge about the primary question of our review, research focusing specifically on this question is needed. We provide suggestions for how such studies could be designed, including spatio-temporal setup, and key management and environmental conditions to consider.

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Suplementación con glicerina cruda y afrechillo de arroz entero a vacas de carne pastoreando campo natural

Cited by 4 publications

References 14 publications

Effect of creep feeding with rice bran and temporary weaning on cow–calf performance

Effect of creep feeding with rice bran and temporary weaning on cow–calf performance

Influence of low pasture allowance during pregnancy on the attachment between ewes and their lambs at birth and during lactation

Effects on biodiversity in semi-natural pastures of giving the grazing animals access to additional nutrient sources: a systematic review

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