Sequential feeding with diets varying in amino acid content for growing-finishing pigs

Author(s)

Welex Cândido da Silva ^[1] ; Paulo Henrique Reis Furtado Campos ^[2] ; Luan Sousa dos Santos ^[3] ; Alini Mari Veira ^[4] ; Alícia Zem Fraga ^[5] ; Luciano Hauschild ^[6]

Affiliation

^[1] Universidade Estadual Paulista. FCAV. Depto. de Zootecnia - Brasil

^[2] Universidade Federal de Viçosa. CCA. Depto. de Zootecnia - Brasil

^[3] Universidade Federal Rural do Rio de Janeiro. Instituto de Zootecnia. Depto. de Nutrição Animal e Pastagem - Brasil

^[4] Universidade Estadual Paulista. FCAV. Depto. de Zootecnia - Brasil

^[5] Universidade Estadual Paulista. FCAV. Depto. de Zootecnia - Brasil

^[6] Universidade Estadual Paulista. FCAV. Depto. de Zootecnia - Brasil

• Document type: Journal article
• Source: Scientia Agricola; v. 78, n. 4 2020-07-08.

Abstract

ABSTRACT This study aimed to evaluate the effects of daily phase feeding (DP) and sequential feeding (SEQ) on the feeding behavior, performance, and body composition of growing-finishing pigs. Sixty barrows at 29.7 ± 2.8 kg body weight (BW) were assigned to one of four treatments: DP with a blended proportion of feeds A (high nutrient density) and B (low nutrient density) was adjusted to match 100 % of daily amino acid (AA) diet recommendations (DP100); a negative treatment, which matched 70 % of daily AA diet recommendations (DP70); and two SEQ with a blend of feeds A and B, adjusted twice a day (at 00h00 and 12h00), to match 70 or 110 % of daily AA diet recommendations during two 12 h intervals: SEQ110-70 and SEQ70-110. DP70 and SEQ showed a lower feed consumption rate compared to DP100 (p < 0.05). Compare to DP100, pigs in both SEQ programs had a similar average daily feed intake (ADFI), average daily gain (ADG), feed efficiency ratio (G:F) and body fat and lean mass ( p > 0.05). SEQ110-70 and SEQ70-110 showed similar ADFI, ADG, G:F and body lean mass (p > 0.05). However, fat gain was greater in SEQ110-70 than in SEQ70-110 (p < 0.05). Overall, the SEQ program does not improve performance and body composition. Furthermore, feeding pigs a diet with a higher AA level during the first 12 h of the day and a lower AA level during the remainder of the day increases fat deposition. (AU)

• FAPESP's process: 18/15559-7 - Precision nutrition for sanitary challenged pigs reared in hot climate areas
• Grantee: Luciano Hauschild
• Support Opportunities: Research Grants - Young Investigators Grants - Phase 2