Results 11 to 20 of about 109,838 (252)
Methane emissions from dairy heifers as affected by residual feed intake and breed : a thesis presented in partial fulfilment of the requirements for the degree of Master of Science in Animal Science at Massey University, Manawatū, New Zealand [PDF]
, 2018 Figures 2.5, 2.6, 2.7, 2.8, 2.9, 3.1, 3.2 & 3.3 have been removed for copyright reasons, but may be accessed via their sources listed in the References.
Flay, Holly Ellissa
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Investigation of Anaplasma marginale Seroprevalence in a Traditionally Managed Large California Beef Herd. [PDF]
, 2016 Recent observations by stakeholders suggested that ecosystem changes may be driving an increased incidence of bovine erythrocytic anaplasmosis, resulting in a reemerging cattle disease in California.
Aly, Sharif S +4 more
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Animal, 2008 Four ruminally fistulated Holstein heifers (BW = 264 ± 12 kg) were used in a 4 × 4 Latin square design experiment to determine the effect of increasing levels of sodium bicarbonate (BICARB; 0%, 1.25%, 2.50% and 5%, on concentrate dry matter (DM) basis ...
L.A. González +3 more
doaj +1 more source
Analysis of the Management and Costs Associated with Rearing Pregnant Dairy Heifers in the UK from Conception to Calving [PDF]
, 2015 Good management of the pregnant heifer is crucial to ensure that she is well grown and healthy and calves down easily before joining the milking herd.
Boulton, A C, Rushton, J, Wathes, D C
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Archives of Veterinary Medicine, 2008 In this paper are presented the results obtained by determining antibody titar of IgA and IgG class against spermatozoal antigens and extenders for bull’s semen using the method of indirect immunofluorescence in blood sera of cows and heifers ...
Aleksandar Milovanović +4 more
doaj +1 more source
The Bovine Practitioner, 1994 In recent years, awareness of the prevalence of heifer mastitis has increased. More research and practical effort on farms is being devoted to heifer mastitis. Attempts to measure prevalence of mastitis in heifers have primarily utilized cultures of quarters of animals at various stages of life until their first calving.
Sears, P. M., Wilson, David J.
openaire +2 more sources
EFFECTS OF HEAT STRESS ON SEXUAL BEHAVIOR IN HEIFERS
Scientific Papers Animal Science and Biotechnologies, 2023 High ambient temperatures affect the secretion of sexual hormones in cows and heifers. As a result, the frequency of silent estrus can reach a high level during summer.
ELENA BOLOCAN
doaj
Effect of dried leaves of Leucaena leucocephala on rumen fermentation, rumen microbial population, and enteric methane production in crossbred heifers [PDF]
, 2020 The effects of dietary inclusion of dried Leucaena leucocephala leaves (DLL) on nutrient digestibility, fermentation parameters, microbial rumen population, and production of enteric methane (CH4) in crossbred heifers were evaluated.
Aguilar-Pérez, Carlos Fernando +6 more
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Anais da Academia Brasileira de CiênciasThis study evaluated the nutritional and productive performance of Nellore purebred heifers and crossbred Brangus x Nellore (BGNE) and Braford x Nellore (BFNE) in a feedlot system.
FELIPE C. BENTO +10 more
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Animal, 2009 Early lactation parameters are difficult to estimate from commercial dairy records due to the small number of records available before the peak of production.
G.E. Pollott
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