scholarly journals Data set on early feed intake and growth performances of rabbits fed during the suckling period with pellets differing in diameter or compression rate using a double-choice testing design

Data in Brief ◽  
2020 ◽  
Vol 29 ◽  
pp. 105196
Author(s):  
Charlotte Paës ◽  
Patrick Aymard ◽  
Anne-Marie Debrusse ◽  
François Laperruque ◽  
Carole Bannelier ◽  
...  
2020 ◽  
Vol 98 (Supplement_2) ◽  
pp. 58-58
Author(s):  
Megan A Gross ◽  
Claire Andresen ◽  
Amanda Holder ◽  
Alexi Moehlenpah ◽  
Carla Goad ◽  
...  

Abstract In 1996, the NASEM beef cattle committee developed and published an equation to estimate cow feed intake using results from studies conducted or published between 1979 and 1993 (Nutrient Requirements of Beef Cattle). The same equation was recommended for use in the most recent version of this publication (2016). The equation is sensitive to cow weight, diet digestibility and milk yield. Our objective was to validate the accuracy of this equation using more recent published and unpublished data. Criteria for inclusion in the validation data set included projects conducted or published within the last ten years, direct measurement of forage intake, adequate protein supply, and pen feeding (no tie stall or metabolism crate data). The validation data set included 29 treatment means for gestating cows and 26 treatment means for lactating cows. Means for the gestating cow data set was 11.4 ± 1.9 kg DMI, 599 ± 77 kg BW, 1.24 ± 0.14 Mcal/kg NEm per kg of feed and lactating cow data set was 14.5 ± 2.0 kg DMI, 532 ± 116.3 kg BW, and 1.26 ± 0.24 Mcal NEm per kg feed, respectively. Non intercept models were used to determine equation accuracy in predicting validation data set DMI. The slope for linear bias in the NASEM gestation equation did not differ from 1 (P = 0.07) with a 3.5% positive bias. However, when the NASEM equation was used to predict DMI in lactating cows, the slope for linear bias significantly differed from 1 (P < 0.001) with a downward bias of 13.7%. Therefore, a new multiple regression equation was developed from the validation data set: DMI= (-4.336 + (0.086427 (BW^.75) + 0.3 (Milk yield)+6.005785(NEm)), (R-squared=0.84). The NASEM equation for gestating beef cows was reasonably accurate while the lactation equation underestimated feed intake.


2021 ◽  
Vol 14 (9) ◽  
pp. 3341-3352
Author(s):  
Loïc Arnold Mba Tene ◽  
Emile Miegoue ◽  
Marie Noëlle Bertine Noumbissi ◽  
Paulette Ntsafack ◽  
Camara Sawa ◽  
...  

The use of phytobiotics in feeding monogastric herbivores has several interests, including the stabilization of the caecal flora and especially the improvement of the growth of animals thanks to a better exploitation of feed resources. Thus a trial was conducted with an objective to evaluate the feed intake and post weaning growth performances of cavy according to the inclusion level of ginger meal. A total of 40 guinea pigs of 3 weeks of age were divided into 4 lots, and subjected to rations consisting of Trypsacum laxum served ad libitum, associated with the compound feed containing 0; 0.5; 0.75 and 1% ginger powder (T0, T1, T2 and T3). This study showed that the total intake of DM, MO and CB from forage was comparable between rations T0, T1 and T2 and significantly higher than those of ration T3. At weaning, average animal weights of all rations were comparable. However, at 8 weeks of age, the T0, T1 and T3 rations yielded comparable average weights, but significantly higher than those of the T2 animals, i.e., 272 g; 298.80 g; 285.25 g and 221.83 g, respectively. The T0, T1 and T3 diets recorded total gains that were comparable but significantly higher than those obtained with animals in Lot T2. Ginger powder can be included up to 0.75% in the diet as a feed additive for improved ingestion and 0.5% for post-weaning growth. L’usage des phytobiotiques dans l’alimentation des herbivores monogastriques présente plusieurs intérêts parmi lesquels la stabilisation de la flore caecale et surtout l’amélioration de la croissance des animaux grâce à une meilleure valorisation des ressources alimentaire. C’est ainsi que des essais ont été conduit avec pour objectif d’évaluer l’ingestion er la croissance post-sevrage des cobayes en fonction du niveau de la poudre de gingembre. Un total de 40 cobayes de 21 jours d’âge était reparti en 4 lots, et soumis à des rations constituées de Trypsacum laxum servi ad libitum, associé à l’aliment composé contenant 0 ; 0,5 ; 0,75 et 1% de poudre de gingembre (T0, T1, T2 et T3). Il ressort de cette étude que les ingestions totales de la MS, de la MO et de la CB du fourrage, ont été comparables entre les rations T0, T1 et T2 et significativement plus élevées que celle de la ration T3. Au sevrage, les poids moyens des animaux étaient comparables pour toutes les rations. Cependant à 8 semaines d’âge, les rations T0, T1 et T3 ont permis d’obtenir les poids moyens comparables, mais significativement plus élevés que ceux des animaux lot T2, soit respectivement 272 g ; 298,80 g ; 285,25 g et 221,83 g. Les rations T0, T1 et T3 ont permis d’enregistrer les gains totaux comparables, mais significativement élevés par rapport à ceux obtenus avec les animaux du lot T2. La poudre de gingembre peut être incluse jusqu’à 0,75% dans la ration comme additif alimentaire pour l'amélioration de l’ingestion et à 0,5% pour la croissance post-sevrage.


2019 ◽  
Vol 97 (Supplement_2) ◽  
pp. 223-224
Author(s):  
Arnaud Samson ◽  
Claire Launay ◽  
Francesc Payola ◽  
Eric Schetelat ◽  
Hervé Fortune

Abstract Reducing dietary crude protein (CP) with synthetic amino acids (AA) supplementation is beneficial for sustainable swine industry. However some discrepancies regarding the consequences on growth performance are observed. Therefore, this trial aimed to assess the effect of dietary CP level on growth performance of pigs from 35 to 113 kg BW. Growth performance of 63 pigs fed ad libitum and allocated to three groups (HH, MM and LL) was compared. Each group received one level of CP (‘H’ for High, ‘M’ for Medium and ‘L’ for Low) during growing (d0–d35) and finishing (d35–slaugther day) periods: 15.1%, 16.2%, 17.2% and 13.0%, 14.0%, 15.1% respectively. Diets were mostly based on wheat, corn and soybean meal. Within each feeding phase, diets were formulated to be similar in apparent total tract digestible phosphorus, net energy and standardized ileal digestible (SID) essential AA, the SID Lys levels being 0.95% and 0.78% during the growing and finishing period respectively. Data were analyzed using a linear model (R, 3.1.2) with individual as the experimental unit as feed intake, body weight and carcass grading were individually recorded. From d0 to d14 and from d35 to d63, average daily gain (ADG) and Growth:Feed ratio (G:F) were significantly reduced as the CP level decreased (P < 0.05) while average daily feed intake (ADFI) remained unaffected by the dietary treatments. From d14 to d35 and in late finishing period (d63-slaugther day), growth performance was not significantly affected by the dietary CP level. Over the 82-d of the experiment, G:F was significantly higher for ‘HH’ pigs (P < 0.01). Overall, ADG tended to be reduced as CP levels decreased (P = 0.10). There was no difference among treatments for parameters concerning carcass grading (lean meat percentage and meat yield). In conclusion, reducing CP levels while maintaining essential AA levels impaired growth performances of pigs.


1997 ◽  
Vol 68 (11) ◽  
pp. 1039-1044
Author(s):  
Junjiro SEKINE ◽  
Hossam El-rein Mohamed KAMEL ◽  
HAI JIN ◽  
Mie HOSOKAWA ◽  
Ryozo OURA ◽  
...  

Agriculture ◽  
2015 ◽  
Vol 5 (4) ◽  
pp. 1183-1194 ◽  
Author(s):  
Aberra Melesse ◽  
Degnet H/Meskel ◽  
Sandip Banerjee ◽  
Aster Abebe ◽  
Amsalu Sisay

Author(s):  
D.I. Lamont ◽  
D.R. Neilson ◽  
G.C. Emmans ◽  
J. Fraser ◽  
J.H.D. Prescott

A knowledge of the chemical composition of the dairy cow is Important in interpreting the interacting influences of body reserves, diet and feed intake on milk production. An investigation has designed to obtain information from a representative sample of Friesian/Holstein cows at different stages of lactation, different ages, and of different yield potential. This information is expensive to collect due to the costs Involved in slaughtering and analysing dairy cows, especially if they are high yielding cows at peak production. The animals used in the investigation have therefore all been Planned culls with sixteen in the later stages of lactation with only three killed in early lactation. It is intended to continue this investigation for several years to obtain a comprehensive data set on the chemical composition of the dairy cow.


2017 ◽  
pp. 39-42
Author(s):  
Ádám Dobos ◽  
Péter Bársony ◽  
János Posta ◽  
László Babinszky

The aim of the experiment was to determine, how the different ratios of the digestibility lysine/ metabolized energy (0.82, 0.87, 0.91 g DLYS/MJ AMEn) of the feed influence the performance of geese. There were 150 goslings (3 treatments, 5 cages/treatments, 10 birds/cages). The experiment has started and finished at the age of 3 and 9 weeks, respectively.The results of the experiment showed, the different ratios of DLYS/AMEn (0.82, 0.87, 0.91 g DLYS/MJ AMEn) did not influence the performance of young geese. Better growth performances were found for the 0.91 g DLYS/AMEn feed (feed intake, body weight gain, feed and energy conversion rate). This treatment coincided with high feeding costs. Based on these results we need more models and farm experiments to prove this tendency.


2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 377-378
Author(s):  
Ghader Manafiazar ◽  
Mohammad Riazi ◽  
John A Basarab ◽  
Changxi Li ◽  
Paul Stothard ◽  
...  

Abstract The objective of this study was to explore the potential of Machine Learning (ML) algorithms to predict residual feed intake (RFI) classification group (high or low RFI) and individual RFI using performance records and genomic information. A total of 4145 animals from research and commercial herds with RFI performance records were included in the study from which 3899 cattle had genomic information (genotyped using Illumina Bovine 50k SNP BeadChip). Different libraries based on R and Python including Lazy Predict, Scikit-learn, PyCaret, and H2O Flow were used to test various ML models. Genomic information was subjected to quality control by removing SNPs with an allele frequency less than 0.05 or with a call rate lower than 0.95. A total of 42,689 SNPs remained for further analysis and accounted for 34% of phenotypic variation (heritability of 0.34±0.07) in RFI. Different numbers of SNPs were selected based on their contribution to phenotypic variation (500 SNPs, 1K, 5K, 10K, and 15K) then were included in the ML models. The GLM Stacked Ensemble model with 15k SNPs performed better than the other models to predict RFI classification group (R2 = 0.54). Regardless of the number of SNPs included in the model, GLM Stacked Ensemble performed better than other models to predict individual RFI. This model’s performance improved with increasing SNPs (MAE=0.39 for 500 SNPs; 0.31 for 15k SNPs). In the test data set, an increasing number of SNPs did not change the performance of the model and had a MAE of 0.39). The results demonstrate the potential for ML to improve predictions for feed efficiency compare to genomic analysis in beef cattle without measuring feed intake.


Author(s):  
B.L. Baldwin ◽  
J.W. Oltjen ◽  
A.C. Bywater ◽  
D.J. Thomson

A dynamic model of beef cattle growth and composition was developed based upon concepts validated in detailed modelling analyses of the growth of individual organs. Concepts that cell number (DNA) and cell size are primary determinants of organ (animal) size are included. Initial body weight (BW) and composition (percentage body fat), mature body weight, feed intake and feed net energy values for maintenance (NEM) and growth (NEG) are inputs to the model. Alternative inputs descriptive of feed can be metabolizable energy (ME) concentration and efficiencies of ME use for maintenance and fattening. Current body DNA and protein content and ME intake are primary determinants of rates of protein accretion. Net synthesis of body fat is calculated after accounting costs of maintenance and protein synthesis. Rate constants defining DNA synthesis, and protein degradation and synthesis, and effects of feed additives and implants upon these were deduced using data from comparative slaughter (energy balance) trials with over 1,000 cattle (mainly Hereford) fed mixed diets. No systematic errors in prediction of body weight or composition due to mature body weight, ration or feed intake (FI) were evident within this data set.


Animals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 3315
Author(s):  
Alice Luciano ◽  
Marco Tretola ◽  
Sharon Mazzoleni ◽  
Nicoletta Rovere ◽  
Francesca Fumagalli ◽  
...  

Former food products (FFPs) have a great potential to replace conventional feed ingredients. This study aimed to investigate the possibility to partially replace standard ingredients with two different types of FFPs: bakery (FFPs-B) or confectionary (FFPs-C) FFPs and their effects on growth performances, feed digestibility and metabolic status in post-weaning piglets. Thirty-six post-weaning piglets were randomly assigned to three experimental diets (n = 12 per diet) for 42 days: a standard diet (CTR), a diet where 30% of standard ingredients were replaced by confectionary FFPs (FFPs-C) and a diet where 30% of standard ingredients were replaced by bakery FFPs (FFPs-B). Individual body weight and fecal dry matter were measured weekly. Feed intake (FI) was determined daily. Average daily gain (ADG), average daily feed intake (ADFI) and feed conversion ratio (FCR) were calculated. Fecal samples were collected daily for three days/week to determine apparent total tract digestibility of dry matter (ATTD). At day 0, 21 and 42, blood samples were collected from all the piglets. No significant differences (p > 0.05) between groups were found in growth performances and metabolic profile. However, ATTD in FFPs-B group was lower (p < 0.05) compared to the CTR group at the end of the experiment. This study confirmed the possibility to formulate homogeneous diets integrated with 30% of both categories of FFPs. Further investigations are needed to clarify the effects of bakery former food products on the digestibility of the diet.


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