References

Afzalzadeh A, De Hovell FD (2002) Role of omasum in the control of feed intake and rumen digesta outflow. Journal of Agricultural Science and Technology 4, 37–50.

Aharoni Y, Brosh A, Holzer Z (1999) Comparison of models estimating digesta kinetics and fecal output in cattle from fecal concentrations of single-dosed markers of particles and solutes. Journal of Animal Science 77, 2291–2304.
| CAS |

Anderson DL, Henderson LJ (1986) Sealed chamber digestion for plant nutrient analyses. 1. Agronomy Journal 78, 937–939.
| CAS |

Baile CA, McLaughlin CL, Della-Fera MA (1986) Role of cholecystokinin and opioid peptides in control of food intake. Physiological Reviews 66, 172–234.
| CAS |

Bird SH, Hegarty RS, Woodgate R (2008) Persistence of defaunation effects on digestion and methane production in ewes. Australian Journal of Experimental Agriculture 48, 152–155.
| CAS |

Blaxter KL (1948) Severe experimental hyperthyroidism in the ruminant. II. Physiological effects. The Journal of Agricultural Science 38, 20–27.

Buccino RA, Spann JF, Pool PE, Sonnenblick EH, Braunwald E (1967) Influence of the thyroid state on the intrinsic contractile properties and energy stores of the myocardium. The Journal of Clinical Investigation 46, 1669–1682.
| CAS |

Bueno L (1972) Action du sphincter reticulo-omasal sur le transit alimentaire chez les bovins. Annales de Recherches Veterinaires. Annals of Veterinary Research 3, 83–91.

Bueno L, Ruckebusch Y (1974) The cyclic motility of the omasum and its control in sheep. The Journal of Physiology 238, 295–312.
| CAS |

Capen CC, Martin SL (1989) The thyroid gland. In ‘Veterinary endocrinology and reproduction’. (Eds LE McDonald, MH Pineda) pp. 58–91. (Lea and Febinger: Philadelphia, PA)

Chen XB, Gomes MJ (1992) ‘Estimation of microbial protein supply to sheep and cattle based on urinary excretion of purine derivatives – an overview of the technical details.’ Occasional Publication 1992. (International Feed Resources Unit, Rowett Research Institute: Aberdeen)

Colucci PE, Chase LE, Van Soest PJ (1982) Feed intake, apparent diet digestibility, and rate of particulate passage in dairy cattle. Journal of Dairy Science 65, 1445–1456.

Dawson LER, Steen RWJ (1998) Estimation of maintenance energy requirements of beef cattle and sheep. The Journal of Agricultural Science 131, 477–485.
| CAS |

Fallah-Rad AH, Connor ML, Del Vecchio RP (2001) Effect of transient early hyperthyroidism on onset of puberty in Suffolk ram lambs. Reproduction (Cambridge, England) 121, 639–646.
| CAS |

Hodin RA, Chamberlain SM, Upton MP (1992) Thyroid hormone differentially regulates rat intestinal brush border enzyme gene expression. Gastroenterology 103, 1529–1536.
| CAS |

IAEA (2003) ‘The technique for estimating microbial protein supply in ruminants based on determination of purine derivatives in urine – a training package.’ (CD-ROM) (International Atomic Energy Agency: Vienna)

IPCC (2007) ‘Climate Change 2007: mitigation. Contribution of working group III to the fourth assessment report of the Intergovernmental Panel on Climate Change.’ (University Press: Cambridge)

Kennedy PM, Young BA, Christopherson RJ (1977) Studies on the relationship between thyroid function, cold acclimation and retention time of digesta in sheep. Journal of Animal Science 45, 1084–1090.
| CAS |

Levin RJ (1969) The effects of hormones on the absorptive, metabolic and digestive functions of the small intestine. The Journal of Endocrinology 45, 315–348.
| CAS |

Lu CD, Jorgensen NA (1987) Alfalfa saponins affect site and extent of nutrient digestion in ruminants. The Journal of Nutrition 117, 919–927.
| CAS |

Miller JK, Swanson EW, Lyke WA, Moss BR, Byrne WF (1974) Effect of thyroid status on digestive tract fill and flow rate of undigested residues in cattle. Journal of Dairy Science 57, 193–197.
| CAS |

Okine EK, Mathison GW (1991) Reticular contraction attributes and passage of digesta from the ruminoreticulum in cattle fed roughage diets. Journal of Animal Science 69, 2177–2186.
| CAS |

Okine EK, Mathison GW, Hardin RT (1989) Effects of changes in frequency of reticular contractions on fluid and particulate passage rates in cattle. Journal of Animal Science 67, 3388–3396.
| CAS |

Pinares-Patiño CS, Ulyatt MJ, Lassey KR, Barry TN, Holmes CW (2003) Rumen function and digestion parameters associated with differences between sheep in methane emissions when fed chaffed lucerne hay. The Journal of Agricultural Science 140, 205–214.

R Development Core Team (2008) ‘R: a language and environment for statistical computing.’ (R Foundation for Statistical Computing: Vienna, Austria) Available at http://www.r-project.org [Verified 11 April 2012]

Reid AM, Shulkes A, Titchen DA (1988) The effects of vasoactive intestinal polypeptide on gastric motility in the lamb. The Journal of Physiology 396, 41–54.
| CAS |

Ruckebusch Y (1983) Pharmacology of reticulo-ruminal motor functions. Journal of Veterinary Pharmacology and Therapeutics 6, 245–272.
| CAS |

Silva JE (2005) Thyroid hormone and the energetic cost of keeping body temperature. Bioscience Reports 25, 129–148.
| CAS |

Stefanovski D, Moate PJ, Boston RC (2003) WinSAAM: a windows-based compartmental modeling system. Metabolism: Clinical and Experimental 52, 1153–1166.
| CAS |

Todini L (2007) Thyroid hormones in small ruminants: effects of endogenous, environmental and nutritional factors. Animal 1, 997–1008.
| CAS |

Udén P, Colucci PE, Van Soest PJ (1980) Investigation of chromium, cerium and cobalt as markers in digesta. Rate of passage studies. Journal of the Science of Food and Agriculture 31, 625–632.

Utiger RD (1995) The thyroid: physiology, thyrotoxicosis, hypothyroidism, and the painful thyroid. In ‘Endocrinology and metabolism’. 3rd edn. (Eds P Felig, JD Baxter, LA Frohman) pp. 435–519. (McGraw-Hill: New York)

Vassilopoulou-Sellin R, Sellin JH (1995) The gastrointestinal tract and liver in hypothyroidism. In ‘Hypothyroidism’. (Eds J Braverman, L Utiger) pp. 816–20. (Lippincott-Raven: New York)

Wang W, Li C, Summer SN, Falk S, Schrier RW (2007) Polyuria of thyrotoxicosis: downregulation of aquaporin water channels and increased solute excretion. Kidney International 72, 1088–1094.
| CAS |

Webster A (1976) The influence of the climatic environment on metabolism in cattle. In ‘Principles of cattle production’. (Eds H Swan, WH Broster) pp. 103–120. (Butterworths: London)

Wegener M, Wedmann B, Langhoff T, Schaffstein J, Adamek R (1992) Effect of hyperthyroidism on the transit of a caloric solid-liquid meal through the stomach, the small intestine, and the colon in man. The Journal of Clinical Endocrinology and Metabolism 75, 745–749.
| CAS |

Whitelaw FG, Brockway JM, Reid RS (1972) Measurement of carbon dioxide production in sheep by isotope dilution. Experimental Physiology 57, 37–55.
| CAS |