Tropical Animal Health and Production This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.

High-throughput DNA sequence analysis elucidates novel insight into the genetic basis of adaptation in local sheep
AbstractUnderstanding how evolutionary factors related to climate adaptation and human selection have influenced the genetic architecture of domesticated animals is of great interest in biology. In the current study, by using 304 whole genomes from different geographical regions (including Europe, north Africa, Southwest Asia, east Asia, west Africa, south Asia, east Africa, Australia and Turkey), We evaluate global sheep population dynamics in terms of genetic variation and population structure. We further conducted comparative population analysis to study the genetic underpinnings of climate adaption to local environment...
Source: Tropical Animal Health and Production - May 1, 2024 Category: Veterinary Research Source Type: research

Effects of supplementation of different selenium sources on lipid profile, selenium, and vitamin E concentration of yolk
AbstractEgg preference as a source of protein also provides beneficial fatty acids, vital for human consumption. However, rich in lipid products are prone to oxidative damage. The study aims to determine the effect of supplementing biogenic selenium (Se) fromStenotrophomonas maltophilia, ADS18 (ADS18) in laying hens ’ diet on yolk lipid oxidation status (MDA), beta-carotene (β-carotene) content, cholesterol, fatty acids, Se, and vitamin E (VE) level. A total of one hundred and twenty (120) laying hens of Lohmann Brown strains aged 50 weeks, weighing 1500 to 2000 g were reared individually in A-shape two-tie r stainless...
Source: Tropical Animal Health and Production - May 1, 2024 Category: Veterinary Research Source Type: research

Comprehensive analysis of differences in the physiochemical composition of foremilk and hindmilk of grazing indigenous and crossbred dairy goats; implications for growth, milk production and industry
This study was conducted on 90 grazing Hair, Alpine × Hair F1 (AHF1), and Saanen × Hair F1 (SHF1) crossbred goats in three farms located around the Taurus Mountains in Konya, T ürkiye. The study investigated variation in milk production, physico-chemical traits of milk fractions (foremilk, hindmilk and total milk), and growth traits. Genotype, parity, offspring sex, birth type, and flock factors significantly influenced milk production and quality traits of milk fractions (P < 0.05 toP < 0.01). Does with male/single offspring produced less milk, but with higher nutrient density (P < 0.05). Hindmi...
Source: Tropical Animal Health and Production - May 1, 2024 Category: Veterinary Research Source Type: research

Effect of Perilla seeds inclusion on the performance, egg quality characteristics, biochemical parameters and egg yolk fatty acid composition of laying hens
This study investigates the effect of supplementation of Perilla seeds (PS) on the performance, egg quality, blood biochemical parameters, and egg yolk fatty acids composition in the diet of egg-laying chicken. A total of 1600 Lohmann laying hens were randomly assigned to four different groups with 4 replicates each (100 chickens/replicate) and were subjected to varying PS concentrations (PS0, PS6, PS12, and PS18; 0%, 6%, 12%, and 18%, respectively) for four weeks, including an acclimation period of one week. The results showed no significant differences among the groups for average egg weight(P > 0.005). The layin...
Source: Tropical Animal Health and Production - April 30, 2024 Category: Veterinary Research Source Type: research

Evaluation of the environmental impacts of the smallholder milk-production system in Central Mexico
AbstractIn order to analyze the environmental performance of Smallholder Dairy Farms (SHDFs) located in the State of Mexico, a Life Cycle Analysis (LCA) was carried out using two methodological approaches (A1 and A2) to estimate and interpret environmental impacts. A1 consisted in obtaining the average inputs and outputs of 15 SHDFs to generate a representative farm life cycle inventory, while A2 included an individual environmental impact analysis per SHDF to obtain average values of the contributions per analyzed midpoint impact category. The feed production subsystem generated the highest contributions to environmental ...
Source: Tropical Animal Health and Production - April 27, 2024 Category: Veterinary Research Source Type: research

Utilization of some fruit rinds in small ruminant feeding: nutritional characteristics determination
In conclusion, the present rinds differed in chemical-nutritional characteristics. These rinds may feed as a substitute for conventional forages in the diets of small ruminants on a large scale throughout the year; however, these in vitro findings need to be scientifically validated unde r in vivo experiments. (Source: Tropical Animal Health and Production)
Source: Tropical Animal Health and Production - April 26, 2024 Category: Veterinary Research Source Type: research

Single nucleotide polymorphisms of growth hormone gene in cattle and their association with growth traits: a systematic review
This study shows that there is a lack of evidence on effect of growth hormone gene on growth traits in cattle. However, more studies are recommended for further validation of the identified SNPs and effect of growth hormone gene on growth traits in cattle. (Source: Tropical Animal Health and Production)
Source: Tropical Animal Health and Production - April 25, 2024 Category: Veterinary Research Source Type: research

Genetic parameters, genetic trends and correlated responses of growth traits considering maternal ability in Nelore cattle
AbstractThe growth of Nelore cattle was analysed considering the following performance parameters; the effect of the calving order of cows on the phenotypic expression of birth weight (BW), average daily gain from birth to weaning (BWG), and weaning weight (WW), the estimated genetic parameters for the traits, including the covariance components between direct and maternal genetic effects. Genetic trends and correlated responses were also obtained for the studied traits. The calving order of cows, as well as other fixed effects used to obtain the adjusted phenotypic means, were statistically significant (p < 0.001)...
Source: Tropical Animal Health and Production - April 25, 2024 Category: Veterinary Research Source Type: research

The addition of curcumin to the diet of post-weaning dairy calves: effects on ruminal fermentation, immunological, and oxidative responses
AbstractIncorporating Curcumin into animal diets holds significant promise for enhancing both animal health and productivity, with demonstrated positive impacts on antioxidant activity, anti-microbial responses. Therefore, this study aimed to determine whether adding Curcumin to the diet of dairy calves would influence ruminal fermentation, hematologic, immunological, oxidative, and metabolism variables. Fourteen Jersey calves were divided into a control group (GCON) and a treatment group (GTRA). The animals in the GTRA received a diet containing 65.1 mg/kg of dry matter (DM) Curcumin (74% purity) for an experimental per...
Source: Tropical Animal Health and Production - April 25, 2024 Category: Veterinary Research Source Type: research

Impact of diversified grazing systems on milk production, nutrient use and enteric methane emissions in dual-purpose cows
In conclusion, the grazingC. ternatea supplemented with commercial concentrate andC. ternatea silage maintains milk production and quality, reduced cow/day emissions (by 2.5%) and lowered energy losses as methane. (Source: Tropical Animal Health and Production)
Source: Tropical Animal Health and Production - April 24, 2024 Category: Veterinary Research Source Type: research

Energy metabolism and respirometry of lambs fed sun or shade dried hays of banana crop residues
AbstractWe aimed to evaluate the effects of different drying methods for banana residues on the energy metabolism and respirometry of growing lambs. Twenty Santa In ês x Dorper lambs were fed five experimental diets: Tifton 85 grass hay (Control), shade-dried banana leaf hay (LH Shade), shade-dried pseudostem banana hay (PH Shade), sun-dried banana leaf hay (LH Sun), and sun-dried banana pseudostem hay (PH Sun). Nutrient intake and digestibility were assessed in metabolic cages, whereas O2 consumption and CO2, methane, and heat production were measured in a respirometry chamber with animals fed at maintenance andad libitu...
Source: Tropical Animal Health and Production - April 24, 2024 Category: Veterinary Research Source Type: research

Effect of fermented Cassava sievate and tiger nut shaft on growth performance, blood profile and immunological parameters in male rabbits
This study examined the effects of using mushroom mycelium to ferment tigernut and cassava pulp on the growth performance, haematology and immunology of rabbits. Seventy-five New Zealand Bulk grower rabbits were randomly distributed to four treatment groups and a control group in a completely randomized approach. The treatment groups were fed with formulated experimental diets containing one of fermented tigernut drink by-product (FT), fermented cassava sievate (FC), unfermented tigernut drink by-product (UT), or unfermented cassava sievate (UC). The control group was fed a basal diet with no additives. The proximate compo...
Source: Tropical Animal Health and Production - April 22, 2024 Category: Veterinary Research Source Type: research

Principal component analysis of phenotypic and breeding value data for semen traits in Egyptian buffalo bulls
This study was conducted to assess the relationship between the breeding values as well as the phenotypic values for semen traits (VOL, MM, LS, AS and CONC) of the Egyptian buffalo bulls. A total of 7761 normal semen ejaculates were collected and characterized at ILMTC laboratory from 26 bulls from 2009 to 2019. For VOL, MM, LS, AS, and CONC, the actual means were 3.89 mL, 62.37%, 60.64%, 3.94%, and 0.67 × 109 sperm/mL, respectively. The prediction of breeding values for semen traits was estimated using a Bayesian procedure. The estimated standardized EBVs and phenotypic values were used in the principal component an...
Source: Tropical Animal Health and Production - April 22, 2024 Category: Veterinary Research Source Type: research

Association of polymorphism in the promotor area of the caprine BMPR1B gene with litter size and body measurement traits in Damani goats
This study aimed to explore polymorphisms in the promoter region of the caprineBMPR1B (Bone morphogenetic protein receptor 1 beta) gene and its association with body measurement and litter size traits in Damani does. A total of 53 blood samples were collected to analyze the association between theBMPR1B gene polymorphism and 11 phenotypic traits in Damani female goats. The results revealed that three novel SNPs were identified in the promoter region of the caprineBMPR1B gene, including g.67 A > C (SNP1), g.170 G > A(SNP2), and g.501A > T (SNP3), among which the SNP1 and SNP2 were significantly (p�...
Source: Tropical Animal Health and Production - April 22, 2024 Category: Veterinary Research Source Type: research

Relationships of infrared thermography temperature with core temperature in goat
AbstractRectal temperature is widely used as an indicator of animal health. However, rectal temperature is conventionally measured by an invasive method, which may reduce animal welfare. So, this study aimed to determine the relationships between the deep-body (core) temperature and body surface temperatures in goats and develop a linear regression equation to establish the core temperature based on body surface temperatures. Body surface temperatures (head, eye, muzzle, horn, back, scrotum and groin) of goats were measured by infrared thermography (IRT). Ambient temperatures were measured by digital thermometer. Core temp...
Source: Tropical Animal Health and Production - April 22, 2024 Category: Veterinary Research Source Type: research