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1.
Vet Rec ; 169(9): 228, 2011 Aug 27.
Artigo em Inglês | MEDLINE | ID: mdl-21795309

RESUMO

Blood was obtained from 61 neonatal Holstein calves originating from a farm in Germany with a high incidence of bovine neonatal pancytopenia (BNP). In order to detect alterations that might be related to BNP, selected haematological analytes were determined. Haematological examinations demonstrated alterations in at least two of the three cell lineages in 10 calves (16.39 per cent). Six animals (9.84 per cent) developed a bleeding disorder indicative of BNP at approximately two weeks of age. None of these animals showed alterations in complete blood cell count at sampling in the first week of life. In weeks when calves with BNP were born, an increase in the number of apparently healthy calves demonstrating decreases in blood cell counts was observed.


Assuntos
Contagem de Células Sanguíneas/veterinária , Doenças dos Bovinos/sangue , Pancitopenia/veterinária , Animais , Animais Recém-Nascidos , Autopsia/veterinária , Biomarcadores/sangue , Bovinos , Doenças dos Bovinos/diagnóstico , Feminino , Testes Hematológicos/veterinária , Transtornos Hemorrágicos/sangue , Transtornos Hemorrágicos/diagnóstico , Transtornos Hemorrágicos/veterinária , Masculino , Pancitopenia/sangue , Pancitopenia/diagnóstico
2.
Anim Health Res Rev ; 12(1): 83-93, 2011 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-21676342

RESUMO

Medium-chain fatty acids (MCFAs) are found at higher levels in milk lipids of many animal species and in the oil fraction of several plants, including coconuts, palm kernels and certain Cuphea species. Medium-chain triglycerides (MCTs) and fatty acids are efficiently absorbed and metabolized and are therefore used for piglet nutrition. They may provide instant energy and also have physiological benefits beyond their energetic value contributing to several findings of improved performance in piglet-feeding trials. MCTs are effectively hydrolyzed by gastric and pancreatic lipases in the newborn and suckling young, allowing rapid provision of energy for both enterocytes and intermediary hepatic metabolism. MCFAs affect the composition of the intestinal microbiota and have inhibitory effects on bacterial concentrations in the digesta, mainly on Salmonella and coliforms. However, most studies have been performed in vitro up to now and in vivo data in pigs are still scarce. Effects on the gut-associated and general immune function have been described in several animal species, but they have been less studied in pigs. The addition of up to 8% of a non-esterified MCFA mixture in feed has been described, but due to the sensory properties this can have a negative impact on feed intake. This may be overcome by using MCTs, allowing dietary inclusion rates up to 15%. Feeding sows with diets containing 15% MCTs resulted in a lower mortality of newborns and better development, particularly of underweight piglets. In conclusion, MCFAs and MCTs offer advantages for the improvement of energy supply and performance of piglets and may stabilize the intestinal microbiota, expanding the spectrum of feed additives supporting piglet health in the post-weaning period.


Assuntos
Fenômenos Fisiológicos da Nutrição Animal , Dieta/veterinária , Ácidos Graxos/química , Suínos/crescimento & desenvolvimento , Triglicerídeos/química , Ração Animal/análise , Animais , Ácidos Graxos/metabolismo , Ácidos Graxos/farmacologia , Triglicerídeos/metabolismo , Triglicerídeos/farmacologia
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