Tropical Animal Health and Production 
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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.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 Â 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 (pâ€...
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
Evaluation of the effect of Carica papaya seed on the growth performance of fattening rabbits
In conclusion, 6% was optimal in the feed rations of fattened rabbits to improve production performance. Breeders can consider the benefits of introducingCarica papaya seeds into the rabbits ’ diet. (Source: Tropical Animal Health and Production)
Source: Tropical Animal Health and Production - April 20, 2024 Category: Veterinary Research Source Type: research
Effects of inbreeding on production traits and genetic evaluations in Guzer á beef cattle raised under tropical conditions
The objectives of this study were to evaluate the influence of inbreeding on growth traits and body measurements, as well as on the estimation of genetic parameters and genetic trends in Guzer á cattle. Phenotypic records of 4,212 animals selected for postweaning weight from Guzerá Breeding Program of Advanced Beef Cattle Research Center were utilized. The pedigree file contained records from 7,213 animals born from 1928 to 2019. The traits analyzed were: birth weight (BW), weights adju sted to 210, 378 and 550 days of age (W210, W378 and W550, respectively), chest girth at 378 and 550 days of age (CG378 and CG550), scro...
Source: Tropical Animal Health and Production - April 20, 2024 Category: Veterinary Research Source Type: research
Effect of dietary inclusion of Pennisetum purpureum (Napier) grass on growth performance, rumen fermentation and meat quality of feedlot sussex red steers
AbstractThe aim of this study was to evaluate the growth performance, fermentation indices and meat quality of Sussex steers fed totally mixed rations that composed of graded inclusion levels of Napier grass (NP). Three experimental diets designated as diet 1 (0.0  g kg–1 NP: Control), diet 2 (300  g kg–1 NP grass) and diet 3 (600  g kg–1 NP) were formulated. Twenty-four male steers aged 8 months with an average body weight of 185.0  ± 30 kg were used. In a completely randomized design, the animals were allocated to the diets and fed for 120 days. Dietary NP inclusion reduced (P <  0.05) the animalsâ€...
Source: Tropical Animal Health and Production - April 20, 2024 Category: Veterinary Research Source Type: research
Impact of different forms of selenium supplementation on growth and physiological performance of New Zealand white rabbits
AbstractForty-eight weaned male New Zealand White rabbits aged 6  weeks with an initial body weight of (709.67 ± 13 g) were randomly divided into six experimental groups (8 rabbits each) for 6–14 weeks of age experimental periods. The present study was planned to evaluate the effect of using different forms of Selenium element (inorganic, nanoparticles and organic) as dietary supplementation on productive performance of rabbits. Six experimental groups in completely randomized design were used. The first group (G1, control) was fed the basal diet to cover maintenance and production allowances. Rabbits in the othe...
Source: Tropical Animal Health and Production - April 19, 2024 Category: Veterinary Research Source Type: research
The potential of pumice as a litter material and its influence on growth performance, carcass parameters, litter quality traits, behavior, and welfare in broiler chickens
This study evaluated the possibilities of pumice (light stones) as litter material in broiler production. Experimental treatments included wood shavings (WS), acidic pumice (AP), and basic pumice (BP) alone, and in combination; wood shaving  + acidic pumice (WSAP) and wood shaving + basic pumice (WSBP) in a ratio of 1:1. Two trials were performed, one in summer, and the other in winter. Each trial involved 750 mixed-sex Ross (308) broilers. Also, there were 15 replicate pens with 50 broilers and a stocking density of 12.5 birds /m2 for each pen at the beginning of each trial. Performance, litter quality, carcass pa...
Source: Tropical Animal Health and Production - April 18, 2024 Category: Veterinary Research Source Type: research
The Portuguese mertolenga cattle breed: a review
AbstractThis review summarizes the state of the art regarding the phylogenetic origins, recent history and present-day main traits and uses of theMertolenga cattle breed from Southern Portugal, particularly those related to production performances and product quality. Named after the historical city of M értola, in southern Portugal, theMertolenga is one of the fifteen autochthonous bovine breeds of Portugal. It is a cattle breed thoroughly adapted to the poor Mediterranean pastures of the southern regions of the Iberian Peninsula. It is used predominantly in an extensive to semi-intensive sylvopastoral production system ...
Source: Tropical Animal Health and Production - April 18, 2024 Category: Veterinary Research Source Type: research
