Efficiency of use of supplementary lighting in rearing of dairy calves during milk feeding stage

Almeida, Gledson Luiz Pontes de; Pandorfi, Héliton; Baptista, F.J.; Guiselini, Cristiane; Cruz, Vasco Fitas da

doi:10.1590/1807-1929/agriambi.v19n10p989-995

Cited by 5 publications

(4 citation statements)

References 19 publications

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“…As such, all the treatments exhibited minimum average and maximum values of zero, 1.48 m s -1 and 2.0 m s -1 , respectively. According to Almeida et al (2015), holding pens without side coverings favor greater internal air circulation. These results corroborate those of Fiorelli et al (2009), who found no statistical differences (p > 0.05) in temperature humidity index in husbandry facilities with open sides and covered using recycled and cement fiber tiles.…”

Section: Figurementioning

confidence: 99%

Thermography and physiology of stress in dairy calves in outdoor holding pens covered with geosynthetics

Campos

Passini

Nascimento

2021

Rev. bras. eng. agríc. ambient.

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This study aimed to assess the environmental variables, thermal comfort indices and physiological responses of calves in outdoor holding pens shaded with geosynthetics. Twenty crossbred females (Giroland, Jersey and Holstein) in the suckling phase (from birth to 90 days old) with an average initial live weight of 40.6 kg were used. A completely randomized block design was used, in a 4 × 3 factorial scheme with five replicates. The roofing materials (polyethylene mesh, geocomposite drainage layer, nonwoven geotextile and woven geotextile) were the first factor and time periods (8 to 10 a.m., 12 to 2 p.m. and 4 to 6 p.m.) the second factor. The following environmental variables were measured to calculate thermal comfort indices: temperature-humidity index, black globe-humidity index and enthalpy. The physiological variables analyzed were respiratory rate, rectal temperature and skin temperature. Environmental variables and thermal comfort indices did not differ between the different roof types, however, a significant difference (p ≤ 0.01) was observed between the time periods, with 12 to 2 p.m. being the most critical period. The lowest average respiratory rate (60.3 breaths min-1) and rectal temperature (38.9 °C) were recorded for the animals kept under the geocomposite drainage layer roof. There was a significant difference (p ≤ 0.05) for interaction between treatment and time periods for the cannon area. The geosynthetics studied can be used as roofing material for outdoor holding pens, with the geocomposite drainage layer being the most indicated for tropical regions.

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Section: Figurementioning

confidence: 99%

Thermography and physiology of stress in dairy calves in outdoor holding pens covered with geosynthetics

Campos

Passini

Nascimento

2021

Rev. bras. eng. agríc. ambient.

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“…Importantly, calves at 8 weeks of age under 20h of light consumed 0.952kg of concentrate (Table 1), which was much greater than the 0.800kg day -1 recommendation of LOPES et al (2010) as a criterion for weaning. According to ALMEIDA et al (2015) the increasing daily lighting period stimulated the consumption of concentrate and allowed weaning of calves in shorter period, promoting a reduction of 20% in the cost of rearing animals during milk feeding stage. Therefore, it is evident that age at first childbirth in cow has a great involvement in stablishing cattle livestock structure.…”

Section: Resultsmentioning

confidence: 99%

Concentrate intake and performance of dairy calves subjected to programs of supplementary lighting

et al. 2017

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This research aimed to assess Girolando calves’ concentrate intake and performance when placed in shelters with distinct roofing materials and programs of supplementary lighting during the milk-feeding stage. In order to so, we used a completely randomized design with a 3×3 factorial arrangement, with three replications. Females Girolando calves (n=27) were assigned in individual shelters at random with 3 different roofing materials (fiber cement tile, recycled tile and thatched roofs) and subjected to three lighting programs (12, 16 and 20 hours). No interaction was observed between roofing material and lighting programs, whilst no significant effect (P>0.05) was observed among the roofing materials. The supplementary lighting, by providing greater light exposure time, has stimulated intake and therefore, significantly affected (P<0.05) the concentrate intake and performance of the animals that were subjected to 20 hours of light.

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“…The study results underscore the significant role of light, particularly the long-day photoperiod (LDPP), in promoting cattle growth and development (Table 1). De Almeida et al (2015) further highlighted that exposure to extended light days (up to 20 h daily) for milkfed calves not only enhances the economics of their rearing but also has no negative impact on animal welfare.…”

Section: Dairy Cattle Performance Depending On the Light Conditionsmentioning

confidence: 99%

Effect of light on dairy cattle in farm conditions – a review

Adamczyk,

Herbut,

Godyń

et al. 2024

Annals of Animal Science

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Cattle are among the animals with diurnal activity, which is due to the specific animal– environment relationship and the natural role wild cattle play in the ecosystem. As humans began domesticating, breeding these animals, they became an integral part of this relationship. This review article addresses the most important current issues: 1) a characterisation of contemporary knowledge on the biological determinants of the vision abilities of dairy cattle, 2) a discussion of the relationship between these abilities and animal health and performance, and 3) a characterisation of the light–animal relationship under husbandry conditions. The intricate link between the anatomical and physiological aspects of visual function in cattle and their circadian rhythms was emphasised. This connection directly influences cattle growth and development, as well as the health and performance of dairy cows during the long/short day photoperiods. The article also considers the possibility of managing dairy cows’ photoperiod and light quality to enhance their performance and overall well-being.

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Efficiency of use of supplementary lighting in rearing of dairy calves during milk feeding stage

Cited by 5 publications

References 19 publications

Thermography and physiology of stress in dairy calves in outdoor holding pens covered with geosynthetics

Thermography and physiology of stress in dairy calves in outdoor holding pens covered with geosynthetics

Concentrate intake and performance of dairy calves subjected to programs of supplementary lighting

Effect of light on dairy cattle in farm conditions – a review

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