The aim of this paper was to draw up a set recommendations for applied nutrition and feeding trials with rabbits, in relation certain aspects such as determining the nutritive value raw materials or diets growing reproducing animals, studying digestive physiology obtaining growth reproduction parameters. We deal first size sample, housing conditions, diets, handling, measurements, data analyses relevant design experiment are described. Secondly, we give list recommended items include some comments.

Epizootic Rabbit Enteropathy (ERE) is a severe disease of unknown aetiology that mainly affects post-weaning animals. Its incidence can be prevented by antibiotic treatment suggesting bacterial elements are crucial for the development disease. Microbial dynamics and host responses during were studied. Cecal microbiota was characterized in three rabbit groups (ERE-affected, healthy pretreated with antibiotics), followed transcriptional analysis cytokines mucins cecal mucosa vermix q-rtPCR. In...

1200 weaned crossbred rabbits, individually controlled, were fed ad libitum on Diet A (16.4 % starch, 15.3 CF) or B (24.8 11.6 from 28 to 49 days of age. Uve weight gain was not affected by diet (37.7 g/day). Feed intake and leed conversion higher with (95.5 vs 84.5 g/day 2.55 VS 2.27 g/g, P<0.001). Mortality however lower this (4.7 8.0 %, P<0.05). Another group 60 rabbits slaughtered at 38 age, the starch content their digesta distal ileum caecum determinad. Starcfí ileal its...

A total of 190 rabbit females were used to evaluate five feeding programmes from 9 weeks age the first parturition: CAL, fed ad libitum with a control diet (C: 11.0 MJ digestible energy (DE) and 114 g protein (DP)/kg dry matter (DM)) until parturition; CR, C 12 then restricted (140 g/day) F, low-energy, high-fibre (F: 8.7 DE 88 DP/kg DM) FC, F 16 age, FCF, 20 parturition. The rabbits artificially inseminated at 18 age. CAL group had higher mortality rate compared other groups between (34% v....

Abstract In an experiment of factorial design, female rabbits were given four diets, containing 13·0, 11·4, 10·4 and 9·7 kJ digestible energy (DE) per g subjected to two remating intervals (R) 1 2 days (intensive) or 9 (semi-intensive) from parturition. The lasted for years during which 352 does produced a total 1254 litters. only major differences due diet that the with highest concentration, contained 35 g/kg added fat, promoted significantly higher intake in lactation (111 v. average 94...

Abstract Forty-two New-Zealand x Californian young female rabbits of 4·5 months age were used to evaluate the use o f a computerized ultrasound system in estimating changes body condition. In order get wide range fatness, animals randomly subjected four food restriction regimes for 2 weeks. Female scanned at six different back sites estimate perirenal fat thickness, using real-time unit equipped with 5·0-MHz sector probe. After scanning, all weighed and slaughtered. The weights hot carcass,...

Abstract The influence of high fat diets on several production traits primiparous and multiparous rabbit does was studied in 246 lactations from a total 61 crossbreed (Californian × New Zealand). Starting with control diet (diet C) 26 g ether extract (EE) per kg dry matter (DM), two isoenergetic were formulated adding vegetable sources up to 99 EE DM V) or animal 117 A). Digestible energy/digestible protein ratio (DE/DP) maintained between 82 87 kj/g. Food intake decreased compared the...

Abstract Seventy-four New Zealand ✕ Californian females were used to determine the influence of dietary energy source on performance and perirenal fat thickness (PFT) change measured by ultrasound primiparous rabbit does. Three highly concentrated diets designed with different sources: animal (diet F), vegetable oil O) cereal starch S), does fertilized artificial insemination after parturition (AP group) or around weaning (AW group), litters being weaned at 28 days age. There no significant...

The aim of this work was to evaluate the ability a line selected for reproductive longevity (LP) confront productive challenges compared during 31 generations litter size at weaning (V). A total 133 rabbit does were used (72 and 61 from LP V lines, respectively). Within each line, three groups with different levels effort planned: PP9, inseminated day 4 after first partum nine kits second partum, (30 days) (PW9) or five (PW5) partum. performance, body condition (perirrenal fat thickness...

Abstract Experiment I. One hundred and twenty-five lactations from 88 New Zealand × Californian does were used to study the influence of high fat diets on performance milk yield multiparous rabbit in two productivity situations: housed hot conditions (minimum temperature above 24°C) with eight pups (group H8), or warm under 21 °C) 11 W11). Starting a control diet (diet C) 26 g ether extract (ЕЕ) per kg dry matter (DM), isoenergetic formulated adding vegetable sources up 99 ЕЕ DM V) animal...

A total of 166 crossbred young female rabbits were used to study the effect two types does (H1 v. H2, old and current generations, respectively) from cross different generations maternal lines selected for litter size, use a feeding programme based on low energy rearing diet (F) presentation high-energy pre-partum (E) performance rabbit females until their first parturition main traits at kindling. Perirenal fat was thicker age 3 months H2 than H1 does, but this difference disappeared...

Abstract A total of 166 crossbred does were used to study the possible long-term effect two types (H1 v. H2, old and current generations, respectively) from cross different generations lines selected for litter size, use a rearing programme based on low-energy diet, administration high-energy diet during reproductive life, performance body condition lactating rabbit their litters until slaughter. The increased in successive cycles fourth parturition, being maintained this moment on. Animals...

To better understand the mechanisms that allow some animals to sustain their productive effort in harsh environmental conditions, rabbit does from two selection lines (LP and V) were housed normal (NC), nutritional (NF) or heat (HC) challenging conditions first third partum. The LP line (n=85) was founded on reproductive longevity criteria by selecting commercial farms had a minimum of 25 partum with more than 7.5 kits born alive per parity. Line V (n=79) constituted four specialised...

<p>In recent decades, recommendations on dietary protein content have been considerably reduced, while fibre has increased. Under these conditions, an adequate amino acid balance could be crucial to optimise feed efficiency. Plasma urea nitrogen (PUN) level a good indicator of imbalance and its potential already studied in other species, but not yet rabbits. The main objective the present work was detect possible interest PUN pinpointing deficiencies Two experimental diets were...

As a consequence of the genetic selection process in growing rabbits, there are currently fast-growing animals exhibiting an average daily gain that may exceed 45 g/d. The protein requirements these animals, namely amino acid requirements, differ from with low growth rates. objective this work was to evaluate performance, coefficient total tract apparent digestibility (CTTAD), ileal (AID) acids and nutrient retention rabbits when they had access diet high levels and/or formulated current...

Abstract The main energy diets developed and evaluated in recent decades for reproductive rabbit does are reviewed, with the emphasis on effect of source (animal fat, vegetable oil, cereal starch) used. During gestation, supplementation usually produces a decrease feed intake due to regulation, but some cases females unable regulate their high-starch diets, leading excessive intake. This overfeeding can cause fattening does, sometimes related greater pup mortality at birth. lactation,...