Productive and reproductive performance and blood chemistry on grazing Brahman replacement heifers supplemented with fatty acids and protein

نویسندگان

چکیده

To evaluate the effect of calcium salts long-chain fatty acids (CaLCFA) and protein supplementation on body weight (BW), average daily gain (ADG), pregnancy rate (PR), blood chemistry, 57 Brahman heifers with 309.1 ± 3.04 kg BW 1,010 8.51 days age, were divided into three uniform groups assigned for 102 to treatments under a completely randomized design: 1) grazing forage only (F); 2) F+CaLCFA, 3) F+CaLCFA+protein-energy mix (CaLCFA+CP) 453 g/kg, containing mainly (g/kg) CaLCFA (200), hydrolyzed feather meal (300), cornmeal (375). About 0.2 1 kg/animal/d CaLCFA+CP offered, respectively, an intake 200 192 g/animal/d same order supplements. The breeding period (BP) lasted 45 started after beginning period. Body showed treatment × time interaction (p < 0.01), being different at end BP (348; 338 331 kg, respectively CaLCFA, CaLCFA+CP, F). Average (g/d) was higher 0.01) (358) than (281), lower F (206). Overall, PR 0.05) (68.4 %) (36.8 %). Cholesterol (mg/dL) (139) (117). Calcium improved ADG first mating, while cholesterol increased supplementation.

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ژورنال

عنوان ژورنال: Corpoica Ciencia y Tecnología Agropecuaria

سال: 2021

ISSN: ['2500-5308', '0122-8706']

DOI: https://doi.org/10.21930/rcta.vol22_num3_art:2051