scholarly journals Effects of Ad Libitum and Restricted Feeding on Semen Quantity and Quality, Body Composition, and Blood Chemistry of Caged Broiler Breeder Males

1989 ◽  
Vol 68 (4) ◽  
pp. 569-576 ◽  
Author(s):  
K.J. SEXTON ◽  
J.A. RENDEN ◽  
D.N. MARPLE ◽  
R.J. KEMPPAINEN
Keyword(s):  
Body Composition ◽  
Blood Chemistry ◽  
Restricted Feeding ◽  
Broiler Breeder ◽  
Ad Libitum ◽  
Broiler Breeder Males

The influence of feeding level from 20 to 45 kg live weight on the performance and body composition of female and entire male pigs

1983 ◽  
Vol 36 (2) ◽  
pp. 193-199 ◽  
Author(s):  
R. G. Campbell ◽  
M. R. Taverner ◽  
D. M. Curic
Keyword(s):  
Body Composition ◽  
Energy Intake ◽  
Crude Protein ◽  
Live Weight ◽  
Conversion Ratio ◽  
Restricted Feeding ◽  
Food Conversion ◽  
Digestible Energy ◽  
Protein Deposition ◽  
Ad Libitum

ABSTRACTForty-two pigs representing equal numbers of entire males and females were used to study the effects on the performance and body composition of four restricted levels of feeding (14·5, 20·3, 24·9 and 29·4 MJ digestible energy per day), and of offering the same diet (14·5 MJ digestible energy per kg and 210 g crude protein per kg) ad libitum between 20 and 45 kg live weight.Over the four restricted feeding treatments there were no significant differences between the sexes for the performance and body composition of four restricted levels of feeding (14·5, 20·3, 24·9 and 29·4 MJ digestible energy per day), and of offering the same diet (14·5 MJ digestible energy per kg and 210 g crude protein per kg) ad libitum between 20 and 45 kg live weight.Although ad libitum energy intake was the same for both sexes (34·2 MJ digestible energy per day), raising digestible energy intake from that provided by the highest restricted feeding treatment (29·4 MJ/day) to ad libitum resulted in marked differences between the sexes for performance and body composition.For males, raising digestible energy intake from 29·3 to 34·2 MJ/day improved the rate of live-weight gain and protein deposition by 0·15 and 0·10 respectively but had no further effect on food conversion ratio or body fat. The same increase in digestible energy intake for females improved growth rate by only 0·065, had no further effect on the rate of protein deposition but increased markedly food conversion ratio and body fat.

Influence of feeding intensity on the growth, body composition and sexual maturity of male New Zealand White rabbits

2003 ◽  
Vol 51 (3) ◽  
pp. 305-319 ◽  
Author(s):  
Kinga Fodor ◽  
L. Zöldág ◽  
S. Gy. Fekete ◽  
A. Bersényi ◽  
A. Gáspárdy ◽  
...  
Keyword(s):  
Body Composition ◽  
Body Weight ◽  
New Zealand ◽  
Sexual Maturity ◽  
Dry Matter ◽  
The Body ◽  
Restricted Feeding ◽  
Feeding Intensity ◽  
Ad Libitum ◽  
Average Body

An experiment was carried out with young male New Zealand White (NZW) rabbits to establish live body weight changes, body measurements, body composition and sexual maturity as a function of feeding intensity. Animals in Group 1 ('AL', n = 10) were fed ad libitum, while those in Group 2 ('RS', n = 10) received restricted feeding corresponding to 70% of the ad libitum level. The starting liveweights were practically the same (0.907 ± 0.146 and 0.911 ± 0.147 kg in Group AL and Group RS, respectively). The feeding trial lasted from 6 to 22 weeks of age. The average body weight was significantly higher in Group AL from 7 to 22 weeks of age. At 22 weeks of age the body weight of RS rabbits was 85.64% of the weight of AL animals (3.22 ± 0.52 kg and 3.76 ± 0.33 kg, respectively). Average body weights of RS males at 8, 9, 11, 19 and 21 weeks of age were similar to those of ad libitum fed (AL) animals at 7, 8, 10, 15 and 16 weeks of age, respectively. The growth of bucks fed restricted tended to be allometric. The most significant difference was found at 16 and 18 weeks of age, while the lowest difference occurred at 6, 12, 15 and 19 weeks of age. It can be stated that low-intensity feeding up to slaughtering weight causes backwardness in rear cannon length and this backwardness remains also after the 15th week, which is well over the optimal slaughtering age. Based on the present data, the 70% restricted feeding cannot be recommended either for the future breeding bucks or for broiler males reared for slaughter. To determine the major chemical components of the body, rabbits were euthanised. Original dry matter and crude fat content of the body significantly (P < 0.05) decreased under restricted feeding (41.42%; 32.48% and 16.73%; 7.35%) while the percentage of protein within the dry matter increased (49.6%; 65.0%) and fat decreased (40.17%; 22.1%) significantly. Libido unambiguously decreases as a consequence of feed deprivation. The most conspicuous difference was found in the level of blood testosterone. Although a few RS bucks produced semen but only much later than the rabbits fed ad libitum. On the other hand, there was no difference in the motility of spermatozoa and ejaculate volume in comparison with AL animals. There was no relationship between the body fat content and the reproductive status of bucks in the present trial.

scholarly journals Effects of Ad Libitum Versus Restricted Feeding on Body Composition and Egg Production of Broiler Breeders

1988 ◽  
Vol 67 (7) ◽  
pp. 1001-1007 ◽  
Author(s):  
K.R. ROBBINS ◽  
S.F. CHIN ◽  
G.C. McGHEE ◽  
K.D. ROBERSON
Keyword(s):  
Body Composition ◽  
Egg Production ◽  
Restricted Feeding ◽  
Broiler Breeders ◽  
Ad Libitum

scholarly journals ANTI-AGEING EFFECTS OF DIETARY BEE PRODUCTS AND CALORIE RESTRICTION ON SEMEN PRODUCTION AND OXIDATIVE DAMAGE IN OLDER BROILER BREEDER MALES

2020 ◽  
Vol 57 (4) ◽  
Author(s):  
Çiğdem Şeremet Tuğalay ◽  
Özge Altan
Keyword(s):  
Calorie Restriction ◽  
Royal Jelly ◽  
Control Group ◽  
Standard Diet ◽  
Adaptation Period ◽  
Broiler Breeder ◽  
Semen Characteristics ◽  
Reproductive Ageing ◽  
Ad Libitum ◽  
Broiler Breeder Males

This study was conducted to investigate the effects of calorie restriction and dietary bee products (apilarnil plus royal jelly) supplementation on reproductive and oxidative responses and to determine the possibilities that these treatments may be used in retarding the reproductive ageing of broiler breeder males. At 52 weeks of age, broiler breeder males were assigned to four treatment groups. The control group was fed on restricted feed as recommended by the breeder company throughout the study; the ad libitum group was fed ad libitum for a four-week period; the bee products group was fed similar to the control group except that their diet was supplemented with apilarnil and royal jelly for a four-week period and in the last group calorie restriction (45 % of standard diet) was applied for a four-week period. After a four-week adaptation period, the experiment was continued for 18 weeks. The results obtained in the present study have demonstrated that the percentage of dead sperm was the most affected semen characteristic by reproductive ageing. Long-term moderate feed restriction could not prevent age-related declines in sperm production. Dietary bee products supplementation or calorie restriction for a fourweek period positively affected the semen characteristics, and these beneficial effects could be maintained to some extend up until 72 weeks of age. Calorie restriction enhanced antioxidant defence for the first four-week period; however, this beneficial effect could not be sustained until the end of the experiment.Key words: broiler breeder males; ageing; semen characteristics; oxidative stress; bee products; calorie restrictionVPLIV ČEBELJIH PRIDELKOV IN OMEJEVANJA KALORIJ NA PROIZVODNJO SEMENA IN OKSIDATIVNI STRES PRI STAREJŠIH SAMCIH PLEMENSKIH BROJLERJEVAbstrakt: Študija je bila izvedena z namenom raziskovanja učinkov omejevanja kalorij in dodajanja prehranskih čebeljih pridelkov (apilarnil in matični mleček) na reprodukcijske in oksidativne odzive ter ugotoviti možnosti uporabe prehranskih dodatkov za zaviranje reproduktivnega staranja samcev plemenskih brojlerjev. Pri starosti 52 tednov so bili samci plemenskih brojlerjev razporejeni v štiri skupine. Kontrolna skupina je bila ves čas študije krmljena z restrikcijsko krmo po priporočilih podjetja, ki se ukvarja z gojenjem plemenskih broilerjev; skupina ad libitum je bila štiri tedne hranjena ad libitum; skupina, pri kateri so bili dodani čebelji pridelki je bila krmljena podobno kot kontrolna skupina, le da je bila njihova prehrana štiri tedne dopolnjevana z apilarnilom in matičnim mlečkom, zadnja skupina pa je štiri tedne dobivala kalorično omejeno hrano (45 % običajne prehrane). Po štiritedenskem prilagoditvenem obdobju se je poskus nadaljeval še 18 tednov. Rezultati, pridobljeni v tej študiji, so pokazali, da je bila najbolj prizadeta značilnost staranja povišan odstotek mrtvih semenčic v ejakulatu. Dolgoročna zmerna omejitev krme ni preprečila starostnega zmanjšanja proizvodnje smenčic. Dodatek prehranskih čebeljih pridelkov ali omejevanje kalorij v obdobju štirih tednov je pozitivno vplival na značilnosti semena. Ti blagodejni učinki so se ohranili vse do starosti do 72 tednov. Omejitev kalorij je okrepila tudi antioksidativno obrambo v prvih štirih tednih raziskave; vendar pa se je ta ugodni učinek kasneje izgubil.Ključne besede:samci plemenskih brojlerjev; staranje; značilnosti semena; oksidativni stres; čebelji proizvodi; omejitev kalorij

scholarly journals 117 Functionality of a novel consensus bacterial 6-phytase variant in enhancing phosphorus digestibility in gestating and lactating sows

2020 ◽  
Vol 98 (Supplement_4) ◽  
pp. 109-109
Author(s):  
Deepak Velayudhan ◽  
Xandra Benthem de Grave ◽  
Katie Waller ◽  
Leon Marchal ◽  
Yueming Dersjant-Li
Keyword(s):  
Soybean Meal ◽  
Random Effect ◽  
Positive Control ◽  
Negative Control ◽  
Combined Effect ◽  
Restricted Feeding ◽  
Sunflower Meal ◽  
Tukey Test ◽  
Lactating Sows ◽  
Ad Libitum

Abstract Two experiments were conducted to determine the efficacy of phytase on apparent total tract digestibility (ATTD) of phosphorus (P) in gestating and lactating sows. In Exp. 1, a total of 40 sows (parity 2–6) at d 78 of gestation were randomly assigned, based on parity, over 4 experimental diets. In Exp. 2, 40 sows (parity 2.0–6.0) at d 4 of lactation were randomly assigned based on parity, over 4 experimental diets. Both studies had a positive control (PC) diet with adequate levels of calcium (Ca) and digestible P (6.5 and 2.5 g/kg and 7.0 and 3.2 g/kg for gestation and lactation diets, respectively), a negative control (NC) diet with low Ca and digestible P levels (5.0 and 1.0 g/kg and 5.0 and 1.5 g/kg for gestation and lactation diets, respectively), and NC supplemented with a novel consensus bacterial 6-phytase variant (PhyG) or a commercial Buttiauxella sp. phytase (PhyB), both at 500 FTU/kg. Diets were corn, soybean meal and sunflower meal based (phytate P of 3.0 g/kg) with restricted feeding during gestation and ad libitum during lactation. In both studies, fecal samples were collected after an adaptation of 14 d on 4 successive days to determine ATTD of P. Data were analyzed using ANOVA, treatment mean comparison using Tukey test using JMP 14. In addition, data from the Exp. 1 and 2 were pooled to further investigate their combined effect, using trial as random effect. In both studies, supplementation of both phytases improved (P &lt; 0.05) ATTD of P vs NC. With data combined from two trials, sows fed PhyG showed greater (P &lt; 0.05) ATTD of P when compared those fed PhyB. In conclusion, PhyG at 500 FTU/kg showed a greater ATTD of P in sows when compared to the PhyB at 500 FTU/kg, when data combined from two trials.

scholarly journals Effects of Time-Restricted Feeding on Supramaximal Exercise Performance and Body Composition: A Randomized and Counterbalanced Crossover Study in Healthy Men

2021 ◽  
Vol 18 (14) ◽  
pp. 7227
Author(s):  
Joana M. Correia ◽  
Inês Santos ◽  
Pedro Pezarat-Correia ◽  
Cláudia Minderico ◽  
Brad J. Schoenfeld ◽  
...  
Keyword(s):  
Body Composition ◽  
Body Mass ◽  
Exercise Performance ◽  
Fat Free Mass ◽  
Restricted Feeding ◽  
Supramaximal Exercise ◽  
Mean Power ◽  
Post Intervention ◽  
Dietary Record

Using a crossover design, we explored the effects of both short- and long-term time-restricted feeding (TRF) vs. regular diet on Wingate (WnT) performance and body composition in well-trained young men. Twelve healthy male physical education students were included (age: 22.4 ± 2.8 years, height: 174.0 ± 7.1 cm, body mass: 73.6 ± 9.5 kg, body mass index: 24.2 ± 2.0 kg/m2). The order of dieting was randomized and counterbalanced, and all participants served as their own controls. TRF was limited to an 8-h eating window and non-TRF involved a customary meal pattern. Participants performed WnT tests and body composition scans at baseline, post-one and post-four weeks of the assigned diet. Before testing, participants were asked to fill out a dietary record over four consecutive days and were instructed to continue their habitual training throughout the study. Energy intake and macronutrient distribution were similar at baseline in both conditions. WnT mean power and total work output increased post-four weeks of TRF. Both conditions were similarly effective in increasing fat-free mass after four weeks of intervention. However, there was no correlation between change in fat-free mass and WnT mean power after TRF. TRF did not elicit any changes in WnT performance or body composition one week post-intervention. Thus, long-term TRF can be used in combination with regular training to improve supramaximal exercise performance in well-trained men.

Sign in / Sign up

Export Citation Format

Share Document