Effect of increasing dosage of a multi-mineral-vitamin supplement on productive performance and blood minerals of fattening male Ghezel × Afshar lambs

Autor: E. Mahjoubi, O. Afsarian, Mehdi Hossein Yazdi, A. H. Khaltabadi-Farahani, Mehdi Kazemi-Bonchenari
Rok vydání: 2019
Předmět:
Zdroj: Tropical Animal Health and Production. 51:2559-2566
ISSN: 1573-7438
0049-4747
Popis: This study was conducted to evaluate the effects of supplementation with different levels of mineral-vitamin supplement (MVS) on performance and health of fattening lambs. Thirty-nine fattening male Ghezel× Afshar lambs (averaging body weight 31.02 ± 3.46 kg) were used in a completely randomized design for a period of 84 days. Treatments consisted of 0 (CON), 15 (MVS15), or 30 (MVS30) g/day of MVS mixed into the concentrate. The results showed that inclusion of MVS in the ration linearly enhanced body weight (BW) on day 29 (P 0.002), 45 (P = 0.05), and 70 (P 0.002). Dry matter intake (DMI) was increased linearly (P 0.02) and quadratically (P 0.001) with increasing supplement between days 58 and 70. Overall DMI tended (P = 0.1) to be greater for the MVS 30 treatment. Total average daily gain (ADG), ADG between days 16 and 29, days 58 and 70, total gain: feed ratio, gain: feed ratio between days 16-29 and days 58-70 linearly increased with increasing amount of MVS in the ration (P 0.01). The days with loose fecal scores were not affected by treatments (P 0.05). There was a linear and quadratic (P 0.01) effect on serum Ca concentration. Phosphorus concentration tended to quadratically increase (P = 0.06) with MVS. Blood serum Zn increased linearly (P = 0.01) with increasing level of MVS. Collectively, the results showed that, under the conditions of the current experiment, MVS addition to ration improved performance of fattening lambs.
Databáze: OpenAIRE
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