Protein and energy requirements for maintenance of indigenous Granadina goats

Prieto, C. Allende; Aguilera, J. F.; Lara, L.; Fonolla, J.

doi:10.1079/bjn19900103

Cited by 77 publications

(38 citation statements)

References 6 publications

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“…The k m values reflect the rate of body tissues deposition when feed ingested is in excess of maintenance requirement. Compared to other species, the k m value of mouse deer was lower than those of goat (0.73-0.75) reported by Prieto et al (1990) and that of lambs (0.64) reported by Galvani et al (2008). The lower values of k m in mouse deer might be related to lower fat deposition as it was reported by Vidyadaran et al (1983) that mouse deer had a leaner carcass.…”

Section: Discussioncontrasting

confidence: 73%

Energy requirement for maintenance of growing and adult male lesser mouse deer (Tragulus javanicus) in captivity

et al. 2011

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a b s t r a c tA study was conducted to determine the energy requirement for maintenance of eight lesser mouse deer, consisting of four growing males (6-8 months of age) with average body weight of 1.4 ± 0.2 kg and four adult males (>2 years of age) with average body weight of 1.6 ± 0.2 kg. The animals were from the colony reared at the Department of Animal Science, Universiti Putra Malaysia. The experiment was based on a 2 × 4 factorial arrangement in Latin-Square design. The animals were kept in single pens and fed with different levels of feed (70%, 80%, 90% and 100% of ad libitum intake). The feed was made up of 95% pellet and 5% 'kangkong' (Ipomoea aquatica) leaves. The energy requirement for maintenance was determined by using the regression equations between metabolisable energy intake and energy retention or body weight change. Energy retention was calculated as the difference between metabolisable energy intake and heat production. The results showed that the metabolisable energy requirements for maintenance when calculated based on energy retention were 420.1 and 422.9 kJ kg −0.75 d −1 for growing and adult mouse deer, respectively, and when calculated based on weight change the values were 435.1 and 436.9 kJ kg −0.75 d −1 , respectively. The efficiency of utilization of metabolisable energy for maintenance (k m ) for growing mouse deer was 0.58 and that for adult mouse deer was 0.54.

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Section: Discussioncontrasting

confidence: 73%

Energy requirement for maintenance of growing and adult male lesser mouse deer (Tragulus javanicus) in captivity

et al. 2011

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“…Furthermore, AFRC (1998) guidelines are based on respirometry trials, which have been reported to differ in terms of heat production (i.e., respirometry vs the comparative slaughter technique) and thus also in ME m (MCCRACKEN; RAO, 1989;WEBSTER, 1989). Prieto et al (1990) estimated similar ME m values for indigenous male goats (443 kJ kg -0.75 BW), indicating that genotype may also affect ME m . In cattle, studies have found lower ME m for more rustic compared to specialized beef cattle breeds (i.e., Bos indicus vs Bos taurus); this difference is allegedly due to differences in visceral organ mass and activity, protein turnover, internal fat and/or thermoregulation efficiency under tropical conditions (MARCONDES et al, 2013;OLIVEIRA, 2015).…”

mentioning

confidence: 58%

Energy and protein requirements during the growing phase of indigenous goats

Resende¹,

Ribeiro²,

Almeida³

et al. 2018

SCA

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The objective of this study was to investigate both energy and protein requirements for the maintenance and growth of indigenous goats, based on data from two separate studies. Goats were weaned at 79 ± 4.4 days of age, with milk and solid diet intake recorded daily. To determine energy maintenance requirements, 32 kids of 4.90 ± 0.302 kg initial body weight (BW) were used. Ten kids were slaughtered at 5.40 ± 0.484 kg BW to estimate initial body composition, with the remaining kids randomly assigned to one of two DM intake levels: ad libitum and restricted-fed (1.2-times maintenance level). Heat production (HP) was calculated as the difference between ingested metabolizable energy (MEI) and retained energy. Net energy requirement for maintenance (NE m ) was estimated as the β 0 parameter of the relationship between HP and MEI [HP = β 0 × exp]. Metabolizable energy required for maintenance (ME m ) was calculated iteratively, as HP = MEI. Efficiency of energy utilization for maintenance (k m ) was calculated as NE m /ME m . The intercept of the linear regression of retained CP on CP intake was used to calculate net protein requirements for maintenance (NP m ). Net energy and protein requirement for gain (NE g and NP g , respectively) were obtained using 26 kids fed ad libitum and randomly slaughtered at 5.40 ± 0.484 kg BW (n = 10), 15.8 ± 0.655 kg BW (n = 10), and 26.3 ± 1.27 kg BW (n = 6). The first derivative of the allometric equation (used to calculate energy and protein contents in empty body weight (EBW)) with respect to EBW yielded estimates of NE g and NP g . A Monte Carlobased method was employed to simulate variation in ME m , NE g , and NP g . This study indicated that the net energy required for maintenance is 310.1 ± 36.7 kJ kg -0.75 EBW, with ME m estimated at 499.1 ± 52.1 kJ kg -0.75 EBW and k m equal to 0.62. This study indicated that 1.246 g CP kg -0.75 EBW is required by indigenous kids weighing from 5 to 25 kg BW to meet their NP m . In addition, indigenous goats require between 186.6 ± 2.97 and 214.3 ± 12.9 g CP, and between 5.39 ± 1.49 and 9.74 ± 2.57 MJ to gain one kilogram of EBW. This study may contribute to future adjustments in feeding system energy and protein recommendations for indigenous kids. de 2 estudos. Os caprinos foram desmamados com 79 ± 4,4 dias de idade. Ingestão de leite e dieta sólida foi tomada diariamente. Utilizou-se 32 cabritos de 4,90 ± 0,302 kg de peso corporal (PC) inicial. Nesse momento, 10 cabritos foram abatidos para estimativa de composição corporal inicial. Os cabritos remanescentes foram distribuídos aleatoriamente em dois níveis de ingestão: ad libitum ou com ingestão de 20% acima do nível de mantença. A produção de calor (C) foi calculada pela diferença da energia metabolizável (IEM) ingerida e energia retida. A energia líquida para manteça (EL m ) foi estimada pelo parâmetro β 0 da relação entre C e IEM [C = β 0 × exp] . A exigência de energia metabolizável para mantença (EM m ) foi calculada quando C = IEM. A eficiência de utilização de energia para...

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“…Doses were equivalent to: 0, 50, 100 and 200 mg/l rumen content per day of PTS and 0, 50, 100 and 160 mg/l rumen content per day of BCM. The experimental diet consisted of alfalfa hay and concentrate provided at a ratio of 55 : 45 to cover the maintenance energy requirements (Prieto et al, 1990). The experiment included 7 days for adaptation of animals to the additives and 2 days for feed intake and methane emission measurements.…”

Section: Methodsmentioning

confidence: 99%

In vitro–in vivo study on the effects of plant compounds on rumen fermentation, microbial abundances and methane emissions in goats

Fernández

Abecia

Martín-García

et al. 2013

Animal

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Two in vitro and one in vivo experiments were conducted to investigate the effects of a selection of plant compounds on rumen fermentation, microbial concentration and methane emissions in goats. Treatments were: control (no additive), carvacrol (CAR), cinnamaldehyde (CIN), eugenol (EUG), propyl propane thiosulfinate (PTS), propyl propane thiosulfonate (PTSO), diallyl disulfide (DDS), a mixture (40 : 60) of PTS and PTSO (PTS + PTSO), and bromochloromethane (BCM) as positive control with proven antimethanogenic effectiveness. Four doses (40, 80, 160 and 320 µl/l) of the different compounds were incubated in vitro for 24 h in diluted rumen fluid from goats using two diets differing in starch and protein source within the concentrate (Experiment 1).The total gas production was linearly decreased ( P < 0.012) by all compounds, with the exception of EUG and PTS + PTSO ( P ⩾ 0.366). Total volatile fatty-acid (VFA) concentration decreased ( P ⩽ 0.018) only with PTS, PTSO and CAR, whereas the acetate:propionate ratio decreased ( P ⩽ 0.002) with PTS, PTSO and BCM, and a tendency ( P = 0.064) was observed for DDS. On the basis of results from Experiment 1, two doses of PTS, CAR, CIN, BCM (160 and 320 µl/l), PTSO (40 and 160 µl/l) and DDS (80 and 320 µl/l) were further tested in vitro for 72 h (Experiment 2). The gas production kinetics were affected ( P ⩽ 0.045) by all compounds, and digested NDF (DNDF) after 72 h of incubation was only linearly decreased ( P ⩽ 0.004) by CAR and PTS. The addition of all compounds linearly decreased ( P ⩽ 0.009) methane production, although the greatest reductions were observed for PTS (up to 96%), DDS (62%) and BCM (95%). No diet-dose interaction was observed. To further test the results obtained in vitro, two groups of 16 adult non-pregnant goats were used to study in vivo the effect of adding PTS (50, 100 and 200 mg/l rumen content per day) and BCM (50, 100 and 160 mg/l rumen content per day) during the 9 days on methane emissions (Experiment 3). The addition of PTS and BCM resulted in linear reductions (33% and 64%, respectively, P ⩽ 0.002) of methane production per unit of dry matter intake, which were lower than the maximum inhibition observed in vitro (87% and 96%, respectively). We conclude that applying the same doses in vivo as in vitro resulted in a proportional lower extent of methane decrease, and that PTS at 200 mg/l rumen content per day has the potential to reduce methane emissions in goats. Whether the reduction in methane emission observed in vivo persists over longer periods of treatments and improves feed conversion efficiency requires further research.

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Protein and energy requirements for maintenance of indigenous Granadina goats

Cited by 77 publications

References 6 publications

Energy requirement for maintenance of growing and adult male lesser mouse deer (Tragulus javanicus) in captivity

Energy requirement for maintenance of growing and adult male lesser mouse deer (Tragulus javanicus) in captivity

Energy and protein requirements during the growing phase of indigenous goats

In vitro–in vivo study on the effects of plant compounds on rumen fermentation, microbial abundances and methane emissions in goats

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