Affiliation:
1. Universidade Estadual de Montes Claros, Brazil
2. Epamig Norte, Brazil
3. Epamig Triângulo Mineiro, Brazil
Abstract
ABSTRACT This study aimed to evaluate the effects of different nutritional plans on the productive, physiological and metabolic parameters of F1 ½ Holstein x ½ Zebu cows in different stages of lactation. Sixty lactating cows were allotted to a completely randomized 5 x 3 factorial design with five feed allowances and three lactation periods. The dry matter intake, milk yield and heart rate were reduced by 5.69kg, 2.41kg and 10.36 beats/min (morning) and 10.25 beats/min (afternoon) for each 1% feed restriction, respectively. There was no difference in the concentration of glucose, total protein, albumin, cholesterol and non-esterified fatty acids for cows subjected to different feed allowances, with means of 95.25, 7.98, 2.95, 121.68 and 0.45mg/dL, respectively. Feed restriction of up to 2.50% BW is a cost reduction strategy that does not alter milk yield, regardless of the stage of lactation.
Reference32 articles.
1. Indicadores, tendências e oportunidades para quem vive no setor leiteiro,2018
2. Official Methods of Analysis;Association of Official Analytical Chemists,1990
3. Teores plasmáticos de hormônios, produção e composição do leite em sala de espera climatizada;ARCARO JUNIOR I.;Rev. Bras. Eng. Agríc. Ambient.,2003
4. Influence of some factors on the relative evaporation rate from the skin of cattle;BERMAN A;Nature,1957
5. Nutritional and productive parameters of Holstein/Zebu cows fed diets containing cactus pear;BORGES L.D.A.;Asian-australas. J. Anim. Sci.,2019
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献