iv General Preface v Acknowledgements vi List of Tables xi List of Figures xiii List of Abbreviations xiv List of Publications xv Chapter one: Introduction 1 Chapter two: Neonatal calf diarrhoea: a literature overview 4 2.1. The principles of rearing of newborn dairy calves, with particular reference to the situation in New Zealand 4 2.2. The economic impact of neonatal calf diarrhoea 8 2.3. Ae...

BACKGROUND Little is known about the occurrence rate, underlying etiology or treatment of left displacement of the abomasum in beef calves. OBJECTIVE Describe the clinical presentation, diagnosis and treatment of left displacement of the abomasum in 4 beef calves. ANIMALS Four client-owned beef breed calves with left displaced abomasum (LDA). METHODS Retrospective case series. Hospital me...

Brahman (n = 9) and 1/2 Simmental x 1/4 Brahman x 1/4 Hereford (n = 11) calves were utilized to determine the influence of exposure to cold on the physiology of the neonate. All calves were removed from their dams within 20 min of birth and prior to suckling. Calves were assigned randomly within breed to either a warm (W; 31 degrees C) or cold (C; 4 degrees C) environmental treatment group. Jug...

As the dairy industry continues to grow, more dairy calves are available for dairy, beef, and veal purposes. Rearing systems must be highly efficient to make this industry cost efficient, making the evaluation of rearing methods important to establish the most practical method. A study was designed and conducted to evaluate effects of housing and feeding systems on performance of neonatal Holst...

Background: Timely feeding of adequate colostrum to new born calf is important ensure transfer passive immunity prevent several infections. Present study has evaluated effect time and amount on physiological parameters health scores in Surti buffalo calves. Methods: Based after birth, 24 calves were divided into four groups as T1 (7%; 0-4), T2 4-8), T3 (10%; 0-4) T4 4-8). Physiological (twice d...

This study investigated the effects of a mixture of steam-flaked corn and extruded soybeans on performance, ruminal development, ruminal fermentation variables, and intestinal absorptive capability in Holstein male calves (n = 39). Calves were assigned to 1 of 3 treatments (13 calves per treatment): 1) milk replacer (MR), 2) one-half of the amount of MR in treatment 1, plus a mixture of 62.1% s...

Inactivated bovine virus diarrhoea virus, strain 11249nc, inoculated subcutaneously three times with Quil-A into calves protected against intranasal challenge with the same strain. Virus was isolated from nasopharyngeal swabs taken 4 to 8 days post challenge and blood taken 4 to 6 days post challenge from control calves but not from vaccinated calves. A second strain of virus, Ky1203nc, was sel...

Eight bull calves (four Holsteins and four Ayrshire calves with mean birth weight of 38.8 kg) were ruminally cannulated at 3 d of age and allocated to one of two weaning programs. All calves were fed colostrum for 3 d after birth and milk until weaning. Calves in the conventional-weaning program were fed a starter diet from 3 d of age and weaned at 6 wk of age. In the early-weaning program, cal...