Effects of water-cooled cover on physiological and production parameters of farrowing sows under hot and humid climates

Pang Zhenzhen, Li Baoming, Zheng Weichao, Lin Baozhong, Liu Zuohua

Abstract


The hot and humid climates, as encountered in the southern region of China with the open housing, can adversely impact the sows undergoing heat stress during the most vulnerable period at lactation. Hence, a water-cooled cover system (WCCs) for local cooling has essential practical value to improve productivity. The WCCs was developed for the sow crate of lactating sows separately, which performance was validated with the cooling efficiency in the sow occupied zone (SOZ) and physiological parameters. The results showed that the WCCs for the farrowing sows using aluminium plastic tubes connected in series could reach an appropriate cooling performance in adjacent units. The WCCs could decrease the SOZ air temperature by 3.0°C-4.5°C under the extremely hot climate when the indoor air temperature was 37°C, and maintain a suitable range (25°C-30°C) under the typical hot climate (<35°C). The respiration rate and skin temperature of farrowing sows had no significant difference between treatment group (WCC) and control group (sprinkle cooling) when the air temperature was below 30°C, but had a significant difference (p<0.05) when air temperature rose above 30°C. The control sows drank more during hot weather, and the feed intake was significantly lower than the sows with the WCCs (p<0.01). It was concluded that the WCCs could alleviate the heat stress of farrowing sows during typical hot climate.
Keywords: localized cooling, heat stress, farrowing sow, water-cooled cover, hot and humid climate
DOI: 10.3965/j.ijabe.20160904.1858

Citation: Pang Z Z, Li B M , Zheng W C, Lin B Z, Liu Z H. Effects of water-cooled cover on physiological and production parameters of farrowing sows under hot and humid climates. Int J Agric & Biol Eng, 2016; 9(4): 178－184.

Keywords


localized cooling, heat stress, farrowing sow, water-cooled cover, hot and humid climate

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References


Suriyasomboon A, Lundeheim N, Kunavongkrit A, Einarsson S. Effect of temperature and humidity on reproductive performance of crossbred sows in Thailand. Theriogenology, 2006; 65(3): 606–628.

Tummaruk P, Tantasuparuk W, Techakumphu M, Kunavongkrit A. Effect of season and outdoor climate on litter size at birth in purebred Landrace and Yorkshire sows in Thailand. Journal of Veterinary Medical Science, 2004; 66(5): 477–482.

Barb C R, Estienne M J, Kraeling R R, Marple D N, Rampacek G B, Rahe C H, et al. Endocrine changes in sows exposed to elevated ambient temperature during lactation. Domestic Animal Endocrinology, 1991; 8(1): 117–127.

Black J L, Mullan B P, Lorschy M L, Giles L R. Lactation in the sow during heat stress. Livestock Production Science, 1993; 35(1-2): 153–170.

Renaudeau D, Noblet J, Dourmad J Y. Effect of ambient temperature on mammary gland metabolism in lactating sows. Journal of Animal Science, 2003; 81(1): 217–231.

Prunier A, Messias de Bragança M, Le Dividich J. Influence of high ambient temperature on performance of reproductive sows. Livestock Production Science, 1997; 52(2): 123–133.

Quiniou N, Noblet J. Influence of high ambient temperature on performance of multiparous lactating sows. Journal of Animal Science, 1999; 77(8): 2124–2134.

Dong H M, Tao X P, Liu Y L, Lin J T, Wang X M, Qin Y J. Study on the drip cooling system in farrowing house. Transactions of CSAE, 1998; 15(4): 168–172. (in Chinese with English abstract)

Barbari M, Bianchi M, Sorbetti Guerri F. Preliminary analysis of different cooling systems of sows in farrowing room. Rivista di Ingegneria Agraria, 2007; 1: 53–58.

Dong H M, Tao X P, Li Y, Liu J T, Xin H W. Comparative evaluation of cooling systems for farrowing sows. Applied Engineering in Agriculture, 2001; 17(1): 91–96.

Haeussermann A, Hartung E, Jungbluth T,Vranken E, Aerts J M, Berckmans D. Cooling effects and evaporation characteristics of fogging systems in an experimental piggery. Biosystems Engineering, 2007; 97(3): 395–405.

Silva B A N, Oliveira R F M, Donzele J L, Fernandes H C, Abreu M L T, Noblet J, et al. Effect of floor cooling on performance of lactating sows during summer. Livestock Science, 2006; 105(1): 176–184.

Wagenberg van A V, Peet-Schwering van der C M C, Binnendijk G P, Claessen P J P W. Effect of floor cooling on farrowing sow and litter performance: Field experiment under Dutch Conditions. Transactions of the ASABE, 2006; 49(5): 1521–1527.

Pang Z Z, Li B M, Xin H W, Yuan X Y, Wang CY. Characterisation of an experimental water-cooled cover for sows. Biosystems Engineering, 2010; 105(4): 439–447.

Pang Z Z, Li B M, Xin H W, Xi L, Cao W, Wang C Y, Li W. Field evaluation of a water-cooled cover for cooling sows in hot and humid climates. Biosystems Engineering, 2011; 110(4): 413–420.

Jeon J H, Yeon S C, Choi Y H, Min W, Kim S, Kim P J, et al. Effects of chilled drinking water on the performance of lactating sows and their litters during high ambient temperatures under farm conditions. Livestock Science, 2006; 105(1): 86–93.

Brown-Brandl T M, Nienaber J A, Turner L W. Acute heat stress effects on heat production and respiration rate in swine. Transactions of the ASAE, 1998; 41(3): 789–793.

Olsen A W, Dybkjær L, Simonsen H B. Behaviour of growing pigs kept in pens with outdoor runs: II. Temperature regulatory behaviour, comfort behaviour and dunging preferences. Livestock Production Science, 2001; 69(3): 265–278.

Huynh T T T, Aarnink A J A, Heetkamp M J W, Verstegen M W A, Kemp B. Evaporative heat loss from group-housed growing pigs at high ambient temperatures. Journal of Thermal Biology, 2007; 32(5): 293–299.

Bracke M B M. Review of wallowing in pigs: Description of the behaviour and its motivational basis. Applied Animal Behaviour Science, 2011; 132(1): 1–13.

ASABE. American Society of Agricultural and Biological Engineers Standards. MI: ASABE, 2010.

Almond G W. How Much Water Do Pigs Need? Proccedings of the North Calolina health hogs seminar. 1995. http://www.ncsu.edu/project/swine_extension/healthyhogs/book1995/almond.htm. Accessed on [2016-01-19].




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