Resumo
The constant influence of the human-being in animal management activities, besides increasing the cost of production, becomes a source of animal stress; which generates the most important signs of the process, acting as a bio-sensor that needs to be measured in a continuous and direct way. From the many available options to obtain an animal temperature parameter, the measurement of external temperature proves to be a less invasive method. Fuzzy system, based on fuzzy logic, works with inaccurate information and converts them into a mathematical language with easy computational implementation. Therefore, this work aims to use fuzzy logic as a tool for assessing the degree of swine thermal comfort, using variables data entry related to the environment and the animal. For this purpose, a simulation using Microsoft Excel software was performed with the possible environmental conditions of the region of Piracicaba (Dry Bulb Temperature - Ts and Relative Humidity - UR), interacting with the local altitude (z) and potential tympanic piglets temperatures (TiF) using equations 1 and 2 adapted from Mostaço (2014). After performing the simulations, Rectal Temperature (TR) and respiratory frequency (FR) data obtained were crossed with FR, TR and critical temperatures for condition of thermal comfort of piglets (5th to 8th week) values, proposed by Mostaço (2014) through the fuzzy logical t
O artigo não apresenta resumo em português.
Resumo
The continuous search for productivity increase and cost reduction on the agro- ndustrial production processes has been a driving force for the emergence of new technologies. In swine production, automation is crucial for competitiveness and for adding quality and reliability to production system. The aim of the present work was to develop an automated feeding system for individualized supply to pregnant sows, which enables traceability and production management in both, intensive and extensive farming systems. Thus, we have designed a new feeder with an optimized layout for individualized feeding, taking into consideration the feeder format, number of animals and installation type (fixed or mobile). The method used to validate the new system of automated feeding was done in five steps. The first step was conducted in an intensive breeding system, in which six pens were fitted with feeder and drinkers near the shaded area. The experiment lasted twelve days, being six animals (one animal/pen) used, with access to feed just after accessing the stalls. The sows were fed twice a day, totaling 2 kg of feed/day. The ration delivery was via cables and release mechanism linked to the feed reservoir. During the assessment first stage, the number of feeders was gradually restricted, until only one pen being used for feeding six animals. In the second step of validation, the evaluation wa
O artigo não apresenta resumo em português.
Resumo
Ensuring animal welfare in the production chain has been an ever-present requirement in commercial relationships among producer and export markets. The use of bedding is indicated as a means of facilitating the comfort and welfare of animals, and affords an opportunity which can express their most common behaviors. Thus, we aimed here to assess the effects of wood shaving bedding in group-housed pregnant sows kept in two housing systems (collective and combined) regarding to behavioral pattern, lesions and reproductive efficiency. The experiment was conducted using 216 animals, which were assigned to four treatments. In each treatment, 54 females were subdivided into three replicates of 18 animals each. Treatments were arranged in a 2x2 factorial (two housing systems and two types of flooring). The housing systems tested included the breeding in collective pens (CP) and collective cage (CC) after 28 days of gestation, preceded by cages. Two types of floors were used in experiments, being concrete floor (CF), and the second, a concrete floor covered with wood shavings bed of 25 cm thick (CFB), making the following treatment combinations: CPCF, CPCFB, CCCF and CCCFB. The behavioral variables were recorded on 7 stages throughout gestation, at fixed times (7:30 am, 12:00 pm and 16:00 pm), totaling 18 observation days. In addition to the behavioral assessments, the abiotic variables
O artigo não apresenta resumo em português.
Resumo
The constant influence of the human-being in animal management activities, besides increasing the cost of production, becomes a source of animal stress; which generates the most important signs of the process, acting as a bio-sensor that needs to be measured in a continuous and direct way. From the many available options to obtain an animal temperature parameter, the measurement of external temperature proves to be a less invasive method. Fuzzy system, based on fuzzy logic, works with inaccurate information and converts them into a mathematical language with easy computational implementation. Therefore, this work aims to use fuzzy logic as a tool for assessing the degree of swine thermal comfort, using variables data entry related to the environment and the animal. For this purpose, a simulation using Microsoft Excel software was performed with the possible environmental conditions of the region of Piracicaba (Dry Bulb Temperature - Ts and Relative Humidity - UR), interacting with the local altitude (z) and potential tympanic piglets temperatures (TiF) using equations 1 and 2 adapted from Mostaço (2014). After performing the simulations, Rectal Temperature (TR) and respiratory frequency (FR) data obtained were crossed with FR, TR and critical temperatures for condition of thermal comfort of piglets (5th to 8th week) values, proposed by Mostaço (2014) through the fuzzy logical t
O artigo não apresenta resumo em português.
Resumo
The continuous search for productivity increase and cost reduction on the agro- ndustrial production processes has been a driving force for the emergence of new technologies. In swine production, automation is crucial for competitiveness and for adding quality and reliability to production system. The aim of the present work was to develop an automated feeding system for individualized supply to pregnant sows, which enables traceability and production management in both, intensive and extensive farming systems. Thus, we have designed a new feeder with an optimized layout for individualized feeding, taking into consideration the feeder format, number of animals and installation type (fixed or mobile). The method used to validate the new system of automated feeding was done in five steps. The first step was conducted in an intensive breeding system, in which six pens were fitted with feeder and drinkers near the shaded area. The experiment lasted twelve days, being six animals (one animal/pen) used, with access to feed just after accessing the stalls. The sows were fed twice a day, totaling 2 kg of feed/day. The ration delivery was via cables and release mechanism linked to the feed reservoir. During the assessment first stage, the number of feeders was gradually restricted, until only one pen being used for feeding six animals. In the second step of validation, the evaluation wa
O artigo não apresenta resumo em português.
Resumo
Ensuring animal welfare in the production chain has been an ever-present requirement in commercial relationships among producer and export markets. The use of bedding is indicated as a means of facilitating the comfort and welfare of animals, and affords an opportunity which can express their most common behaviors. Thus, we aimed here to assess the effects of wood shaving bedding in group-housed pregnant sows kept in two housing systems (collective and combined) regarding to behavioral pattern, lesions and reproductive efficiency. The experiment was conducted using 216 animals, which were assigned to four treatments. In each treatment, 54 females were subdivided into three replicates of 18 animals each. Treatments were arranged in a 2x2 factorial (two housing systems and two types of flooring). The housing systems tested included the breeding in collective pens (CP) and collective cage (CC) after 28 days of gestation, preceded by cages. Two types of floors were used in experiments, being concrete floor (CF), and the second, a concrete floor covered with wood shavings bed of 25 cm thick (CFB), making the following treatment combinations: CPCF, CPCFB, CCCF and CCCFB. The behavioral variables were recorded on 7 stages throughout gestation, at fixed times (7:30 am, 12:00 pm and 16:00 pm), totaling 18 observation days. In addition to the behavioral assessments, the abiotic variables
O artigo não apresenta resumo em português.