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Turning and walking by gilts in modified gestation crates
J M McFarlane1, K E Boe, S E Curtis
1Anim. Sci. Dept., University of Illinois, Urbana 61801.
Journal of Animal Science
|February 1, 1988
Summary
Gestation crate width significantly impacts gilt turning frequency, with narrower crates reducing movement. Crates designed for gilt turning allow natural behaviors, influenced by feeder and waterer placement.
Area of Science:
- Animal Science
- Ethology
- Agricultural Engineering
Background:
- Gestation crates are standard housing for pregnant gilts.
- Limited space in crates can restrict natural behaviors like turning.
- Understanding gilt behavior in crates is crucial for welfare and productivity.
Purpose of the Study:
- To investigate the effect of gestation crate dimensions and resource placement on gilt turning behavior.
- To determine factors influencing the frequency and motivation of gilt turns.
- To assess the impact of crate design on gilt activity and orientation.
Main Methods:
- Two experiments were conducted using mated gilts in specially designed gestation crates.
- Experiment 1 varied crate width (56 vs. 61 cm) and feeder/waterer locations.
- Experiment 2 examined crate length (2.1 vs. 3.4 m) and end shape (flared vs. rectangular).
Main Results:
- Narrower crates (56 cm) significantly reduced gilt turning frequency compared to wider crates (61 cm).
- Feeder and waterer location influenced gilt orientation and the likelihood of eating/drinking post-turn.
- Crate length and end shape did not affect total standing duration, but flared ends increased standing frequency.
Conclusions:
- Gestation crate width is a key factor affecting gilt turning behavior.
- Crate design and resource management can influence gilt activity and potentially welfare.
- Further research into optimal crate dimensions is warranted to support natural gilt behaviors.