动物科学
相对湿度
冬季
夏季
随机区组设计
哺乳期
生物
气候学
气象学
地理
园艺
怀孕
地质学
遗传学
作者
Rennan Herculano Rufino Moreira,Rodrigo Fortunato de Oliveira,Jorge Y P Palencia,Leonardo da Silva Fonseca,César Augusto Pospissil Garbossa,Márvio Lobão Teixeira de Abreu,Rony Antônio Ferreira
标识
DOI:10.1590/0001-3765202020190155
摘要
The suckling behavior of piglets was evaluated in summer and winter, using 21 sows of the same genetic line.Data were collected in July (winter) and in January (summer).The experimental design was a randomized complete block (age of piglets) in a 2x2 factorial scheme, with season of the year (winter and summer) and shift (day, from 06 h to 1h:59min and night from 18h to 05h:59min) as factors.The behavioral variables analyzed were number, interval, and frequency of suckling.The behaviors were monitored on day 7 and 15 of lactation, for 24 hours.In winter, the farrowing room had a mean temperature of 20.32 ±2.17°C and a relative humidity (RH) of 58.63 ±2.99%.In the summer, the mean temperature was 26.65 ±4.02°C, with an RH of 62.22 ±12.06%.During winter, the piglets presented longer sucklings during the night, dedicating 1.84 minutes more to suckling compared to the daytime.Nighttime sucklings were 3.13 minutes longer in winter than in summer.However, in summer, piglets suckled more often during the night, with greater interval between feeds during the day.Based on our results, the season infl uences the suckling behavior of piglets, with shorter feedings and greater frequencies in summer.
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