Technical Note: Application of models to estimate daily heat production of lactating sows

Cabezón, F. A.; Schinckel, A. P.; Richert, B. T.; Peralta, W. A.; Gandarillas, Mónica

doi:10.15232/pas.2016-01583

Cited by 20 publications

(10 citation statements)

References 11 publications

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“…As verified in our trial, sows exposed to a heat stress environment have decreased voluntary feed intake, reduced milk production and, consequently, decreased piglet growth performance (Renaudeau et al 2003). Moreover, modern breeding sows are specialized for high prolificacy and milk production, increased thermogenesis and decreased voluntary food consumption, which makes them more vulnerable to high temperatures (Cabezón et al 2017, Renaudeau 2005. Although sow feed intake was not quantified, it can be inferred that high temperatures reduced their feed intake and, consequently, milk supply to the piglets.…”

Section: Discussionsupporting

confidence: 62%

Influence of creep feeder position on the behavior and performance of preweaning piglets and sows in a hot climate environment

Oliveira

Nascimento

Lima

et al. 2021

An. Acad. Bras. Ciênc.

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The use of creep feeding for preweaning piglets is important to improve the performance of the piglets. The objective of this experiment was evaluate the effect of using or altering the position of piglet's creep feeder during lactation on piglet's performance and on behavior of piglets and sows kept in a hot climate environment.Forty-fi ve sows and their litters at 10 days of lactation were randomly distributed into three treatments: front feeder (FF) -near the side of the sow's head; back feeder (BF)-near the side of the rump of the sow; and no feeder (NF). All piglets were weighed individually to evaluate the average weight, weight gain and coeffi cient of variation of the weight. Behavior assessments of the piglets and sows were recorded in 3 period. At 15 and 21 d, piglets of the FF treatment were heavier (P ≤ 0.0001) than piglets of the other treatments. At 10-21d piglets of FF treatment had 76.2% less belly nosing behavior than the NF piglets (P=0.015). The treatments had no impact on behavior of the sows. The creep feeders positioned in the front of the farrowing crate increased piglet growth rate and decreased frequency of belly nosing behavior.

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Section: Discussionsupporting

confidence: 62%

Influence of creep feeder position on the behavior and performance of preweaning piglets and sows in a hot climate environment

Oliveira

Nascimento

Lima

et al. 2021

An. Acad. Bras. Ciênc.

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“…Therefore, the need to measure THP in lactating sows can be important when evaluating feed additives to reduce the negative effects of heat stress or to determine thermodynamics for building design and environmental management systems (i.e., ventilation). Methods to evaluate the environmental impact on THP in lactating sows are often limited to developing estimation models (Cabezon et al, 2017b) or measuring at the room or group level rather than in individual animals (Bond et al, 1959;Brown-Brandl et al, 2014;Stinn and Xin, 2014) due to animal husbandry practices and indirect calorimeter design. Therefore, the study objective was to develop and test a cost-effective indirect calorimetry system capable of measuring THP in individual lactating sows and their litters and separating out the sow from the litter THP.…”

Section: Introductionmentioning

confidence: 99%

Technical note: development of an indirect calorimetry system to determine heat production in individual lactating sows1

Johnson

Zhang

Morello

et al. 2019

Journal of Animal Science

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The ability to determine total heat production (THP) in individual sows and litters can be logistically difficult and often requires the use of multiple animals to generate data on a per room basis. Furthermore, these systems may be costly to construct, precluding their use by many researchers. Therefore, the objective was to develop a low-cost indirect calorimetry system to determine THP in individual lactating sows and litters. Six indirect calorimeters were constructed to house 1 sow and litter in a crate throughout farrowing and a 21-d lactation period. Farrowing crates were placed within a high-density polyethylene pan filled with water and then a polyvinyl chloride frame was constructed around the crate. The frame provided a structure to hold the inlet and outlet air pipes, feed and water inlets, air circulation fans, and a polyethylene plastic sheet that was secured at the bottom of the frame and submerged under water to maintain an air tight seal. Chamber accuracies for O 2 and CO 2 were evaluated by ethanol combustion. One week pre-farrowing, 6 pregnant multiparous sows (parity 2.9 ± 0.9; 218.3 ± 38.6 kg BW) were housed individually in each farrowing crate and the calorimeters were maintained at thermoneutral conditions (20.9 ± 2.6°C and 43.7 ± 18.6% relative humidity) throughout lactation. On lactation day 4, 8, 14, and 18, indirect calorimetry was performed on all sows and their litters, as well as 2 piglets from a sentinel litter to determine THP and the respiratory quotient (RQ). Sentinel piglet data were used to estimate THP and RQ for the sows independent of the litter. Sow + litter THP (kcal/h) increased (P = 0.01; 16.6%) on day 8 compared to day 4 and was greater (27.3%) on day 14 and day 18 compared to day 4 and day 8. Sow THP was greater (P = 0.01) on day 8 (401.19 ± 17.15 kcal/h) and day 14 (430.79 ± 12.42 kcal/h) compared to day 4 (346.16 ± 16.62 kcal/h), and was greater on day 14 compared to day 8, and on day 18 (386.16 ± 20.02 kcal/h) compared to day 14. No sow + litter RQ differences (P = 0.21; 1.02 ± 0.04) were detected by day of lactation. However, sow RQ was reduced (P = 0.01) on day 14 (0.98 ± 0.02) compared to day 4 (1.03 ± 0.03), day 8 (1.02 ± 0.02), and day 18 (1.04 ± 0.03). In summary, this cost-effective system (total cost: $1,892 USD) can allow researchers to accurately evaluate THP in individual lactating sows and their litters.

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“…Sows raised under temperature above 25 °C, to reduce their VFI, have lower milk yields, and produce lighter piglets at weaning (Muns et al, 2016;Cabezón et al, 2017;Ribeiro et al, 2018). Lower feed intake in sows under high ambient temperature can be minimized by combining crude protein reduction with essential amino acid supplementation and energy addition (Renaudeau and Noblet, 2001;Renaudeau et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

“…These animals do not have functioning sweat glands, so an increased respiratory rate is the main way that swine lose heat in hot environments (ABCS, 2014). When exposed to temperatures over 25 °C, there is a notable decrease in feed intake, lower milk production, reduced body mass gain, and a reduction in piglet growth (Quiniou and Noblet, 1999;Cabezón et al, 2017). Williams et al (2013) Occurrence of heat waves and the prediction of feed intake of sows raised in a tropical environment Brito et al…”

Section: Introductionmentioning

confidence: 99%

Occurrence of heat waves and the prediction of feed intake of sows raised in a tropical environment

Brito¹,

Silva²,

Bueno³

et al. 2020

Revista Brasileira De Zootecnia

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Technical Note: Application of models to estimate daily heat production of lactating sows

Cited by 20 publications

References 11 publications

Influence of creep feeder position on the behavior and performance of preweaning piglets and sows in a hot climate environment

Influence of creep feeder position on the behavior and performance of preweaning piglets and sows in a hot climate environment

Technical note: development of an indirect calorimetry system to determine heat production in individual lactating sows1

Occurrence of heat waves and the prediction of feed intake of sows raised in a tropical environment

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