I'm not talking out of my butt people.. Bona fide research went into this. I can get pine shavings for free. I would never use it for anything but meat birds because they don't live long anyways.. I would never use it with chicks.
Exposure to pine dust can cause a wide range of symptoms, including:
- Shortness of breath
- Nasal irritation
- Eye irritation
- Throat irritation
- Flu-like symptoms
- Chronic bronchitis
- Wheezing
- Coughing
- Airflow obstruction
- Chest tightness
- Reduced lung function
- Contact dermatitis
- Asthma
- Rhinitis-like reactions with or without asthma
(from Whitehead et al., 1981; Pisaniello et al., 1991; Shamssain, M., 1992; Halpin et al., 1994; Hessel et al., 1995; Demers et al., 1997; The MAK-Collection for Occupational Health and Safety, 2013)
exposure-related airflow obstruction and respiratory symptoms are observed with both ‘allergenic’ and ‘nonallergenic’ wood dusts, including common species such as pine, spruce, and fir.
Paul Demers and Colleagues, 1997, p. 393
When abietic acid from pine wood is inhaled, it destroys the cells in the airway and lungs (Ayars et al., 1989). When human and rat alveolar epithelial cells, rat lungs, and tracheal tissues were exposed to abietic acid, the solution caused cell disintegration and sloughing.
Numerous studies show that both pine and cedar bedding drastically increase hepatic microsomal enzyme activities and are cytotoxic to the liver (e.g., Vesell, 1967; Cunliffe-Beamer, 1981; Törrönen et al., 1989; Connors et al., 1990; Potgieter et al., 1995; Pelkonen and Hänninen, 1997). Others have found that the chemicals in pine bedding also alter aspects of endocytosis (Buddaraju and Van Dyke, 2003).
Marinell Harriman and Colleagues, 1989
The International Agency for Research on Cancer classifies pine dust as a carcinogen.
Several studies document that workers exposed to pine have a much higher rate of cancer, particularly cancer that affects the nasal passages and glottis (e.g., Hernberg et al., 1983; Voss et al., 1985; Boysen et al., 1986; Maier et al, 1992; see Demers et al., 1997 for a full review).