Biofortification of cow milk through dietary supplementation with sunflower oil: fatty acid profile, atherogenicity, and thrombogenic index
AbstractThe present study aimed to assess the effects of replacing the starchy ingredients of concentrate by increasing the levels of sunflower oil on the production, composition, fatty acid profile, and evaluate the atherogenicity and thrombogenic index of Jersey cow ’s milk. Eight Jersey cows were arranged in a double Latin square and distributed in treatments consisting of supplementation with increasing levels of sunflower oil replacing the corn grain and wheat bran of concentrate, including the following: T0 (control diet), without sunflower oil and with 3 8 g ether extract (EE)/kg dry matter (DM); T1 = 65 g EE/kg D...
Source: Tropical Animal Health and Production - July 15, 2023 Category: Veterinary Research Source Type: research

Performing AI 55 or 65  h after progesterone device removal did not differ in a 7-d progesterone-based protocol for timed-AI in Nellore suckled cows
This study suggests that performing AI from 55 to 65 h after the P4 removal in the 7-d-P4 protocol did not affect the reproductive perfo rmance in Nellore cows, and opens the possibility for producers to take more time to perform AI of cows in the field without affecting P/AI. (Source: Tropical Animal Health and Production)
Source: Tropical Animal Health and Production - July 15, 2023 Category: Veterinary Research Source Type: research

Fish oil supplementation as an omega-3 fatty acid source during gestation: effects on the performance of weaned male goat kids
In conclusion, fish oil supplementation during gestation could negatively affect the fattening performance of kids after weaning, especially the daily live weight gain, although it tended to positively affect hot and cold carcass weights. (Source: Tropical Animal Health and Production)
Source: Tropical Animal Health and Production - July 14, 2023 Category: Veterinary Research Source Type: research

Mitigation of endogenous oxidative stress and improving growth, hemato-biochemical parameters, and reproductive performance of Zaraibi goat bucks by dietary supplementation with Chlorella vulgaris or/and vitamin C
This study was conducted to explore the effects of dietary inclusion ofChlorella vulgaris (CV) or/and vitamin C (VC) on growth, hemato-biochemical parameters, oxidative and antioxidant status, reproductive hormones, and semen quality variables, and scrotal-testicular dimensions of Zaraibi goat bucks. Twenty sexually mature bucks (41.49  ± 0.91 kg BW) were randomly divided into 4 groups (5 bucks/group). The control group was fed the control diet, while the other three groups received a diet supplemented with VC (2 g/animal /day), CV (5 g/animal/day), and CV plus VC (the same levels), respectively, for 8 weeks (trea...
Source: Tropical Animal Health and Production - July 13, 2023 Category: Veterinary Research Source Type: research

Exploratory inference of the ingestive behavior of pigs in the finishing phase in an air-conditioned environment
The objective of this research is to apply exploratory analysis and modeling associated with abiotic factors, physiological and behavioral variables of swine in the semi-arid region. The experimental design used was completely randomized, in a 3  × 3 factorial scheme, randomly distributed in nine pens, with three animals. The behavior of the animals was recorded using images and analyzed within 10-min interval. The data analysis used was multivariate, using the clustering method (tree diagram) and principal component analysis (PCA), in order to establish the main predictors of swine ingestive behavior, using multiple ...
Source: Tropical Animal Health and Production - July 13, 2023 Category: Veterinary Research Source Type: research

Feeding Damascus goats humic or fulvic acid alone or in combination: in vitro and in vivo investigations on impacts on feed intake, ruminal fermentation parameters, and apparent nutrients digestibility
In conclusion, applying humic and fulvic acids alone or in combination attenuated in vitro CH4 production, while improved intake and diet digestibility without adverse effect on rumen fermentation profiles in Damascus goats. (Source: Tropical Animal Health and Production)
Source: Tropical Animal Health and Production - July 11, 2023 Category: Veterinary Research Source Type: research

Estimation of genetic parameters for semen traits in Egyptian buffalo bulls
This study was conducted to characterize semen traits (ejaculate volume (VOL), mass motility (MM), sperm livability (LS), percentage of abnormal sperms (AS), and sperm concentration (CONC)) of Egyptian buffalo bulls and evaluate the importance of some nongenetic factors (year (YC) and season (SC) of semen collection and age of bull genetically and environmentally at collection (ABC)) affecting the investigated traits. A total of 7761 normal semen ejaculates were collected from 26 bulls from 2009 to 2019. Single-trait and bivariate repeatability animal models using Bayesian methods were used to estimate variance components,...
Source: Tropical Animal Health and Production - July 10, 2023 Category: Veterinary Research Source Type: research

Effect of different levels of sodium in water on performance, carcass yield, and meat quality of slow-growing chickens
AbstractThe aim of this study was to evaluate the effects of sodium (Na) levels in the drinking water on the performance, carcass yield, and meat quality of slow-growing chickens. A completely randomized design with 4 treatments (4.90; 32.30; 60.53; and 101.0 mg/L of Na in water) and 6 replications, with 20 birds per experimental unit, was adopted. The treatments are evaluated in the following: 10 to 25, 10 to 39, and 10 to 54 days. For slow-growing chickens from 10 to 25 days, the Na levels in the drinking water promoted a quadratic effect for water and feed intake (p<0.05). The inclusion of Na in the drinking water of...
Source: Tropical Animal Health and Production - July 7, 2023 Category: Veterinary Research Source Type: research

Bioavailability of bioactive phytochemicals in selected tissues and excreta from goats fed hempseed cake (Cannabis sativa L.) finisher diets
AbstractHempseeds are rich in bioactive phytochemicals, yet little is known about their bioavailability in tissues and excreta of animals fed hemp seed cake. The study evaluated the bioactive phytochemicals and their antioxidant activity in the blood, liver, meat, feces, and urine from goats fed finishing diets containing graded inclusions of hempseed cake (HSC). Twenty-five wether goats (26.8  ± 2.9 kg) of 4–5 months were randomly allocated to five experimental diets containing increasing levels of HSC (0, 25, 50, 75, 100 g/kg DM) substituted for soybean meal (SBM) as the main protein source. Goats were allo...
Source: Tropical Animal Health and Production - July 5, 2023 Category: Veterinary Research Source Type: research

Supplementation of nano-selenium (SeNPs) improved growth, immunity, antioxidant enzyme activity, and selenium retention in broiler chicken during summer season
AbstractThe present experiment was aimed at finding the optimal supplemental dose of nano-selenium in broiler chicken during the summer season for better performance in terms of growth, blood metabolites, immune response, antioxidant status, and selenium concentration in vital organs. Three-hundred-day-old Vencobb broiler chicks were randomly distributed into five dietary treatment groups with six replicates of 10 chicks each. The dietary treatments were as follows: T1 (control group), basal diet; T2, basal diet with 0.0375  ppm of nano-Se; T3, basal diet with 0.075 ppm of nano-Se; T4, basal diet with 0.15 ppm of na...
Source: Tropical Animal Health and Production - July 5, 2023 Category: Veterinary Research Source Type: research

Effect of the racial group and body condition score at calving on production performance and metabolic profile of buffaloes during the transition period
This study evaluated the body condition score (BCS) at calving and breed (B) effects on milk composition, yield, performance, physiological parameters, hemogram, blood metabolites, and urinary metabolites in the transition and early lactation periods of Mediterranean (MED) and Murrah (MUR) buffaloes. Twenty MED and fifteen MUR buffaloes were distributed into four experimental treatments, in a completely randomized design, considering their racial groups and BCS (LBCS  = low; HBCS = high): LBCS MED (N = 9); HBCS MED (N = 11); LBCS MUR (N = 8); HBCS MUR (N = 7). Animals were monitored during the last ...
Source: Tropical Animal Health and Production - July 5, 2023 Category: Veterinary Research Source Type: research

Bibliographic mapping of animal genetic resources and climate change in farm animals
This study can help to understand new research trends in the area of animal genetic resources and climate change and can assist in the development of future actions within the research community. (Source: Tropical Animal Health and Production)
Source: Tropical Animal Health and Production - July 5, 2023 Category: Veterinary Research Source Type: research

Occurrence of serological reactions for Leptospira spp. in donkeys and mules from Minas Gerais, Brazil
AbstractResearch concerning leptospirosis in donkeys and mules has been neglected around the world. Therefore, the aim of this study was to investigate the epidemiological situation of the prevalence of anti-Leptospira spp. antibodies in donkeys and mules from the state of Minas Gerais, Brazil. Blood serum samples were collected from 180 animals (109 donkeys and 71 mules) in two rural properties from the state of Minas Gerais, Brazil, and then submitted to a microscopic agglutination test (MAT). Urea and creatinine values were also quantified. Epidemiological variables such as age, breeding system, contact with other anima...
Source: Tropical Animal Health and Production - July 3, 2023 Category: Veterinary Research Source Type: research

Orange molasses as a new energy ingredient for feedlot lambs in Brazil
In conclusion, the orange molasses can replace up to 40% of flint corn in diets for feedlot lambs without affecting final BW. However, it is important to consider the adaptation time proved to be very important for better use of orange molasses as a source of energy in diets for lambs. (Source: Tropical Animal Health and Production)
Source: Tropical Animal Health and Production - July 3, 2023 Category: Veterinary Research Source Type: research

Bibliographic mapping for heat tolerance in pigs and poultry
AbstractHeat tolerance, especially under climate change scenarios, plays an increasingly import factor in pig and chicken production. We therefore evaluated bibliographic mapping of citation, co-occurrence of keywords, co-citation and bibliographic coupling for heat tolerance, and these species. Data was obtained from Scopus (Elsevier) and analysed in Vosviewer. We found a total of 2023 documents from 102 countries, of which 10 countries account for 50% of the publications (USA, China, Brazil, Iran, India, UK, Turkey, Germany, Egypt, and Australia). While heat tolerance is important worldwide, Global South countries, espec...
Source: Tropical Animal Health and Production - July 3, 2023 Category: Veterinary Research Source Type: research