Effects of ooplasmic size on the larval development as observed in the small egg mutant emi of Bombyx mori
1999
Kawaguchi, Y. (Kyushu Univ., Fukuoka (Japan)) | Kusakabe, T. | Banno, Y. | Koga, K.
Nineteen Holstein cows were used to evaluate addition of a combination of rumen-bypass amino acids and rumen-bypass fat on milk production and physiological measures. Cows were fed for ad libitum intake a diet consisting of 45% Italian ryegrass silage (or corn), 45% concentrate mix and 10% alfalfa hay-cube (DM basis) or a similar diet to include the addition of the aminoacids and fat (DL-methionine, 9.4g/d, L-lysine, 23.2g/d, and tallow, 84.2g/d). There were no differences between both treatments in DM intake, milk composition and fatty acid composition of milk fat. Addition of amino acids and fat tended to increase milk yield (31.2 vs. 32.8 kg/d) and 4% FCM (27.4 vs. 28.8kg/d). Ruminal concentrations of ammonia-N and volatile fatty acid (VFA), proportions of VFA and number of protozoa were unchanged. Plasma concentrations of glucose, urea-N, triglyceride, albumin and nonesterified fatty acids were unchanged, while concentration of total cholesterol increased significantly (p0.05) by the addition of amino acids and fat. Concentrations of plasma free amino acids were similar between treatments during 8 - 10 weeks after parturition, while those were increased greatly by the addition of amino acids and fat during 13 - 15 weeks
Afficher plus [+] Moins [-]Mots clés AGROVOC
Informations bibliographiques
Cette notice bibliographique a été fournie par Agriculture, Forestry and Fisheries Research Information Technology Center
Découvrez la collection de ce fournisseur de données dans AGRIS