ABSTRACT This study evaluated the effects of dietary crude protein (CP) and methionine (Met) levels on growth performance, feed utilization, and daily nutrient intake of juvenile Penaeus vannamei reared under 16 and 40 psu. A 2 × 3 × 2 factorial design tested six diets with CP levels (33.3 and 37.4%, as-is basis) adjusted via soy protein concentrate, and Met levels (0.6, 0.7, and 0.9%, as-is basis) supplemented with DL-methionine. Shrimp of 1.49 ± 0.11 g were fed for 91 […]

ABSTRACT This study aimed to characterize carcass, meat quality, sensory and textural parameters, as well as muscle fiber types from 16 Moura pigs, as a local pig raised in outdoor production system, and evaluate differences with 16 conventional commercial (CC) pigs, raised intensively, representing the principal pork type, widely available in national market. Carcass measurements, liquid loss and cooked pork texture tests, proximal composition analysis of pork and backfat, and sensory evaluations with 104 pork consumers were carried out. The […]

ABSTRACT This study aimed to describe the phenotypical and biometrical characteristics of Creole goats on the Tamaulipas Plateau (TP) and San Fernando Valley (SFV) agroecological zones in northeastern Mexico. Eight hundred fifty-eight goats (70 males and 788 females) were studied to collect qualitative and quantitative information. Data were analyzed for male and female goats separately using frequency and general linear models. Pearson’s correlation was used to analyze linear body measurements (LBM) for morpho-structural homogeneity. The canonical discriminant analysis and a […]

ABSTRACT The current study evaluated the impact of aerobic exposure time (ET) and microbial inoculants (MI) on the fermentative and microbiological characteristics and the nutritional value of relocated whole-plant corn silage (WPCS). Treatments were arranged in a 4 × 5 factorial design: microbial inoculants (without inoculant (WI); L. plantarum (DSM3676; DSM3677) + L. buchneri (DSM13573) (LPLB); L. plantarum (MA18/5U) + P. acidipropionici (MA26/4U) (LPPA); and L. buchneri (DSM13573) (LB)) and non-relocated (NR) or relocated after 12, 24, 48, and 60 […]

ABSTRACT The objective of this study was to evaluate the LBu 01 – CGMCC 19250 strain of Lentilactobacillus buchneri (LB) in whole-plant corn silage (WPCS) during different storage periods. The experiment was conducted in a completely randomized design with a factorial arrangement of treatments (2 × 3), two inoculant levels (control – without inoculant, and experimental – inoculated with 9 log CFU LBu 01/kg of forage), and three storage periods (3, 15, and 62 days). Dry matter (DM) losses, aerobic […]

ABSTRACT The objective of this study was to evaluate the associations among forage production related traits in Paspalum nicorae Parodi ecotypes and employ BLUP multi-trait path analysis as a selection criterion. Eighty-four ecotypes were grown in a randomized block experimental design with four replications and measured for three years. Measurements included number of tillers, fresh matter, leaf dry matter, stem dry matter, inflorescence dry matter, total dry matter, leaf:stem ratio, harvest index, cold tolerance, forage persistence, growth habit, and plant […]

ABSTRACT This study aimed to evaluate genotype × environment (G×E) interactions in Guzerá breed animals for 305-day first-lactation cumulative yields (kg) of milk (MY305), fat (FY305), and protein (PY305). We used 6823 records of MY305, 2466 records of FY305, and 1870 records of PY305. The contemporary groups (CG) were created considering herd and year of calving. The analyses were performed in two steps. In the first step, environmental effects on phenotypes were estimated by using a multi-trait model ignoring G×E […]

ABSTRACT This study aimed to compare hot blade with infrared beak trimming with different protocols on performance, beak length, digestive system organ biometry, intestinal histomorphometry, and egg quality in white laying hens. One hundred and twenty chicks were distributed in a completely randomized design in three beak trimming methods/protocols with five repetitions. Hot blade (HB) trimming was carried out at day 7, and infrared beak trimming was carried out at day 1, using light (LIR: 26/23 protection plate and 38 […]

ABSTRACT This study assessed the nutrient profiles of major grower shrimp feeds in Brazil used in semi-intensive farming of Penaeus vannamei and their impact on shrimp growth under optimal (15.8 ± 0.14 ppt), hypoosmotic (3.9 ± 0.57 ppt), and hyperosmotic (41.8 ± 0.62 ppt) salinities. Juvenile shrimp (0.85–1.60 g) were stocked at 50 animals/m2 in 40 outdoor tanks (1 m3) and fed across three consecutive trials lasting 63 to 86 days. Dietary nutrient composition varied widely, with crude protein ranging […]

ABSTRACT The objective of this study was to unravel the genetic architecture of growth traits in sheep through a meta-analysis of genetic parameters (i.e., direct, maternal, and total heritability estimates, as well as genetic correlations), a systematic review, and a functional analysis to identify candidate genes and metabolic pathways related to growth traits. A random effects model was used to obtain the pooled effect estimates for the genetic parameters, and heterogeneity was assessed using both I2 and Cochran’s Q statistics. […]