Resumo

RODRIGUEZ RODRIGUEZ, Cristina; PEREZ ALVARADO, María Alejandra  e  CUARON IBARGUENGOYTIA, José Antonio. Productive behavior of piglets in response to diet composition and the addition of enzymes. Consequences of weaning weight. Rev. mex. de cienc. pecuarias [online]. 2025, vol.16, n.2, pp.290-305.  Epub 29-Set-2025. ISSN 2448-6698.  https://doi.org/10.22319/rmcp.v16i2.5755.

The response to the addition of α-amylase, serine protease, β-glucanase, pectinase, and hemicellulase (EXE) to the piglet diet and two soybean use schemes (SOY) was evaluated. With 552 pigs, in 92 experimental units (EU, pen with 6 pigs), with an initial weight and age of 6.14 ± 1.358 kg and 20 ± 0.83 d. There were 4 blocks (monthly production groups) in a randomized complete block design, and the treatments were the factorial arrangement of two levels of EXE (yes or no) and two levels of soybean meal (SOY), low or high, per feeding phase: P1, 12 or 24 % (7 d); P2, 16 or 32 % (14 d), and P3, 20 or 32 % (21 d). Feed intake, weight gain, and feed efficiency were estimated weekly. The consistency of the feces was evaluated daily (from 1 to 5: 1= dry to 5= liquid). Piglets with EXE diets gained more weight (P<0.02), were more efficient (P<0.07), and had better fecal consistency (P<0.04) in the first week. At the end of the assessment, no differences were found (P>0.16) in any of the criteria evaluated. Likewise, no response to SOY (P>0.19) or SOY×EXE interactions (P>0.26) was observed. When exploring whether piglet weight at weaning influenced the response, two categories (CATs) were established for the initial weight of the EUs: Lightweight, (4.44 ± 0.600 kg, 20 EU) and Heavy (6.73 ± 0.738 kg, 72 EU). The lightweight piglets gained more in the first week and were more efficient throughout the experimental period (P<0.03). Regardless of weaning weight, SOY did not affect productivity, and EXE only provided a temporary advantage.

Palavras-chave : Weaning; Exogenous enzymes; Piglets.

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