A profit function was designed for an industrial commercial rabbitry with the most common management in rabbit production. The incomes, costs, and were calculated economic weights of traits estimated. variable costs (feeding, artificial insemination, health replacement) represented 62% total fixed (labour, utilities, amortisation administration) 38% costs. Major feeding fattening kits labour cost, at 26% 18% respectively. feed conversion rate during (–20.2 €/[g feed/g liveweight]), number...

Thirty commercial rabbit carcasses weighting 836-1413 g were sealed in the Spanish market and retailed according to WRSA norms obtain four parts: fore legs, thoracic cage, loin hind part. The was separated into abdominal walls, Longissimus dorsi (LD) muscles spine cut; legs sacrum from Each joint carefully dissected separate edible meat bone. Meat of each 210 samples (180 joints 30 representing whole carcass) ground scanned by NIRS reflectance quadruplicate; spectra sample averaged. 36...

Steadily increasing data rates of optical interfaces require spectrally efficient coherent transmission using higher-order modulation formats in combination with scalable wavelength-division multiplexing (WDM) schemes. At the transmitter, frequency combs (OFC) lend themselves to particularly precise multi-wavelength sources for WDM transmission. In this work we demonstrate that these advantages can also be leveraged at receiver by an OFC as a highly local oscillator (LO) detection. our...

Due to the lack of a recording system for individual consumption group-housed rabbits, published studies about feeding behaviour are based on information recorded at group- and not level periods covering only few days or, in some cases, part day. Such could be used inform rabbit management systems but cannot genetic selection. We aimed generate use from novel automated feeder rabbits identify new phenotypes animals that incorporated into breeding programs improve feed efficiency social under...

The inclusion of health-related traits, or functionally associated genetic markers, in pig breeding programs could contribute to produce more robust and disease resistant animals. aim the present work was study determinism genomic regions global immunocompetence health a Duroc population. For this purpose, set 30 traits covering immune (mainly innate), haematological, stress parameters were measured 432 healthy piglets aged 8 weeks. Moderate high heritabilities obtained for most significant...

We demonstrate the performance of a novel integrated gain switched optical frequency comb source (GS-OFCS) in two different transmission systems. The device generates 6.25-GHz spaced that comprises eight spectral tones 3-dB power ripple. GS-OFCS presents good noise properties, which include relative intensity ~ -125 dB/Hz and linewidth 1.5 MHz. then employ systems use advanced modulation formats. First, it is employed four-level pulse amplitude format system operating at 3.125-GBaud per...

The effect of selection for growth rate on relative the rabbit body components was studied. Animals from 18th generation a line selected were compared with contemporary control group formed offspring embryos that frozen at seventh same line. A total 313 animals slaughtered 4, 9, 13, 20, and 40 wk old. offal, organs, tissues, retail cuts weighed, several carcass linear measurements recorded. Huxley's allometric equations relating weights respect to BW fitted. Butterfield's quadratic degree...

Most rabbit production farms apply feed restriction at fattening because of its protective effect against digestive diseases that affect growing rabbits. However, it leads to competitive behaviour between cage mates, which is not observed when animals are fed ad libitum. Our aim was estimate the contribution direct ([Formula: see text]) and social genetic effects (also known as indirect effects) total heritable variance average daily gain in rabbits on different feeding regimens (FR),...

Inactivated strain-specific vaccines have been successfully used to control rabbit haemorrhagic disease (RHD) caused by RHDV-2 in the industry. It is unknown whether and how vaccination of breeding does contributed protect population young susceptible kits. The present study investigates immunity against produced transmitted their progeny its dynamic once inherited For this purpose, New Zealand female rabbits 8-9 weeks age were allocated into 2 groups 40 subjects each bred during 6...

The feed consumption and feeding patterns of group-housed livestock their productive outputs can be affected by interactions among group members, such as competition for feeder access aggression. impact is especially significant when restriction implemented during the fattening stage, a common practice in rabbit farms to reduce mortality from digestive disorders this period. overall aim was quantify importance social interaction effects at genetic environmental level on efficiency, behaviour...

Feed restriction is a common nutritional practice in rabbit farming; however, decreased feed intake can also signal potential digestive disorders at an early stage. This study endeavors to investigate the impact of on selected productive traits and urinary metabolome juvenile rabbits across diverse genetic backgrounds. Our objective identify biomarkers capable detecting periods fasting. A total 48 growing were used from two types: Prat line (selected for litter size weaning, n = 24) Caldes...

The molecular basis of compensatory growth in monogastric animals has not yet been fully explored. Herewith, this study we aim to determine changes the pig skeletal muscle transcriptome profile during following a feed restriction period. A RNA-Seq experiment was performed with total 24 females belonging Duroc commercial line. Half received either restricted (RE) or ad libitum (AL) diet first fattening period (60–125 d age). After that, all gilts were fed for further ~30 until age ~155 d,...

ReferencesA study was conducted to compare Allo-Kramer (AK) and Warner-Bratzler (WB) devices evaluate rabbit meat texture assess their correlations with sensory tenderness. Meat samples characterized by a wide range of tenderness were prepared boning longissimus lumborum muscles from 90 carcasses at different post mortem times (1, 3, 24h). The right loin each carcass used for WB AK tests, whereas the left juiciness. test indicated higher juiciness obtained boned 24h in comparison 1 3h...

<p>The aim of this work was to study whether commercial nucleus lines rabbits selected for different traits, and experimental having purposes, have the same degree maturity when compared at slaughter age. The carried out with 17897 from Universitat Politècnica de València. Rabbits came maternal A (3902 rabbits; 44<sup>th</sup> generation), V (4238 39<sup>th</sup> generation) LP (6115 9<sup>th</sup> litter size weaning; paternal line R (2023...

We demonstrate transmission of a 200-Gb/s superchannel over 3-km single-mode optical fiber (SMF) targeting intra-data center interconnect applications using novel single-section quantum-well passive-mode-locked laser that generates an frequency comb. The transmitted signal consists 16 subcarriers filtered from the comb and modulated with advanced modulation format Baudrate-pilot-aided quadrature phase-shift keying (QPSK) enables direct detection. Bit error rates below forward correction...

El objetivo del estudio fue determinar los parámetros productivos y reproductivos de las líneas cuyes Saños Mantaro, desarrollados en la Estación Experimental Agraria Santa Ana, sierra central Perú. Se analizaron registros años 2017 al 2020 1773 1888 línea respectivamente. Los evaluados fueron pesos nacimiento (PN), destete (PD) a cuarta (P4), octava (P8) décimo tercera semana (P13). el tamaño camada (TC) e intervalo entre partos (IP). efectos fijos considerados modelo genética (L), sexo...