Trace mineral requirements for growth of Moxotó goats grazing in the semiarid region of Brazil

Araújo, Marcos Jácome de; Medeiros, Ariosvaldo Nunes de; Teixeira, Izabelle Auxiliadora Molina de Almeida; Costa, Roberto Germano; Marques, Carlo Aldrovandi Torreão; Resende, Kléber Tomás de; Melo, Gabriel Maurício Peruca de

doi:10.1590/s1806-92902017000300008

Cited by 9 publications

(6 citation statements)

References 20 publications

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“…These two minerals promote animal growth, as observed in the estimation of body composition and gain (Table 5). One of the factors that affects body mineral composition is the proportion of minerals in fat, that is, when the deposition of fat increases, the proportion of minerals decreases (Ara ujo et al 2010;Pereira et al 2016).…”

Section: Discussionmentioning

confidence: 99%

Dorper × Santa Ines F1 crossbred lambs under different grazing times and supplement levels in tropical regions: performance and macromineral requirements

Assis

Silva

Júnior

et al. 2018

Italian Journal of Animal Science

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The objective of this study was to evaluate the performance and net requirements for calcium (Ca), phosphorus (P), magnesium (Mg), potassium (K) and sodium (Na) in Dorper Â Santa Ines F1 crossbred lambs under different grazing times and supplement levels. We used 36 uncastrated male lambs with initial body weights (BW) of 15.5 ± 1.9 kg. Twelve animals were used as a reference group, and the remaining 24 animals were divided into three treatments according to grazing time and supplement level: 9 h Â 1.2% BW, 6 h Â 0.84% BW and 3 h Â 0.48% BW. There were increases in the final BW, average daily gain (ADG) and dry matter intake (DMI) of pasture (p < .05) in lambs that grazed longer (9 h Â 1.2% BW). Feed efficiency (G/F ratio) was similar between the 9 h Â 1.2% BW and 6 h Â 0.84% BW groups and both the groups were greater than the 3 h Â 0.48% BW. However, there was a reduction in the DMI of concentrate, total DMI, and Ca, P, Mg and K intake (p < .05) for lambs that grazed longer. However, pasture DMI and sodium intake increased (p < .05) in animals that grazed for less time (3 h). The chemical composition of the empty bodies in DM, fat, ash, Ca and P showed the greatest values (p < .05) in groups with animals grazing 9 h with a supplement level of 1.2% BW. Net maintenance requirements were 0.101-0.202 g Ca/day, 0.204-0.408 g P/day, 0.053-0.105 g Mg/day, 0.386-0.771 g K/day and 0.105-0.211 g Na/day for crossbred lambs between 15 and 30 kg BW. For the same group, net requirements to gain 100/200 g/day BW were 1.171/2.341-1.667/3.333 g Ca/day, 0.694/ 1.398-0.998/1.995 g P/day, 0.027/0.054-0.032/0.063 g Mg/day, 0.098/0.195-0.091/0.182 g K/day and 0.315/0.629-0.311/0.621 g Na/day. Lambs grazing longer (9 h Â 1.2% BW) displayed increased ADG and concentrate intake and reduced forage intake, which increased intake and body retention of Ca, P, Mg and K.ARTICLE HISTORY

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Section: Discussionmentioning

confidence: 99%

Dorper × Santa Ines F1 crossbred lambs under different grazing times and supplement levels in tropical regions: performance and macromineral requirements

Assis

Silva

Júnior

et al. 2018

Italian Journal of Animal Science

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“…Manganese is an essential dietary element for ruminants, required for skeletal development and reproductive efficiency (Ara ujo et al 2017). Deficiency of Mn results in more services per conception and in irregular or absence of oestrus in females.…”

Section: Discussionmentioning

confidence: 99%

The net iron, manganese, copper, and zinc requirements for maintenance and growth of Dorper × Hu ewe lambs

Zhang

Nie

Wang

et al. 2018

Italian Journal of Animal Science

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A comparative slaughter trial was conducted to estimate the net trace element requirements of Dorper Â Hu ewe lambs. Thirty-five ewe lambs with an initial body weight of 33.52 ± 0.56 kg, were used. Seven ewe lambs were randomly chosen and slaughtered at 34.85 ± 0.37 kg body weight as the baseline group for measuring initial body composition. Another seven lambs were also randomly chosen and offered a pelleted mixed diet for ad libitum intake and slaughtered at 41.47 ± 0.53 kg body weight. The remaining ewe lambs (n ¼ 21) were allocated randomly on d 0-3 treatment intake levels within seven slaughter groups. A slaughter group contained 1 lamb from each treatment, and lambs were slaughtered when the ad libitum treatment lamb reached approximately 50 kg body weight. The daily net trace element requirements for maintenance were 310.4 mg Fe, 4.4 mg Mn, 35.7 mg Cu, and 110.3lg Zn/kg of empty body weight. The net trace element requirements for growth decreased from 41.02 to 37.05 mg Fe, 0.52-0.49 mg Mn, and 3.39-3.10 mg Cu and increased from 34.21 to 35.80 mg Zn/kg empty body weight gain (EBWG) from 35 to 50 kg body weight. The net Fe, Mn, Cu and Zn requirements of Dorper Â Hu ewe lambs for maintenance were greater than the recommendations of the NRC, and the net Fe and Mn requirements of Dorper Â Hu ewe lambs for growth were lower than the recommendations of the NRC, except that the net Cu and Zn growth requirements were greater than the recommendations of the NRC. ARTICLE HISTORY

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“…In the semiarid region of Northeast Brazil, goat farming is one of the main economic activities carried out by the rural population, highlighting the use of animals of native breeds, such as Canindé and Moxotó (Araújo et al, 2017a;Ribeiro et al, 2017). With the introduction of exotic breeds, such as the Saanen, Anglo-Nubian, and Alpine, followed by the disorderly crossing of these exotic breeds with the native breeds, the non-descript breed goat (NDG) was originated, which represents most of the herd of goats from the Brazilian semiarid region (Cartaxo et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Ingestive behaviour and Growth Performance of Boer Crossbred and Indigenous Goat Kids Under Different Feeding Levels in Semiarid Region in Brazil

et al. 2022

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This study aimed to evaluate intake, digestibility, ingestive behaviour, and growth performance of Boer × nondescript breed (NDG) F1, Canindé, and Moxotó kids subjected to three levels of feeding (ad libitum intake and restricted intake by 25 and 50%). The study used 45 noncastrated males, 15 animals from each genetic group, assigned to a 3 × 3 factorial arrangement, with five replicates of each genotypic group at each feeding level.There was an interaction (P<0.05) between genotype and feeding levels for intake, digestibility, and average daily gain (ADG). Boer × NDG F1 kids fed ad libitum had higher dry matter intake (g/day), average daily gain, and lower dry matter digestibility than the Canindé and Moxotó kids. Kids at the 50% restriction level had a longer rumination time per gram of dry matter ingested (0.76 min/g) compared to that fed ad libitum (0.29 min/g) and with 25% restriction (0.41 min/g, P<0.05). Boer × NDG F1 animals, when fed ad libitum, have high growth performance compared to Canindé and Moxotó. Thus, it can be inferred that in feedlot systems with unrestricted feeding and a higher proportion of concentrate than forage (above 50%) in the diet, the use of the Boer × NDG F1 kids is an alternative to increase meat production in the Brazilian semiarid region. When subjected to feed restriction, the growth performance of Boer crossbred kids is similar to that of indigenous breeds. Kids subjected to feed restriction have longer rumination time and higher digestibility coefficients than their counterparts.

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Trace mineral requirements for growth of Moxotó goats grazing in the semiarid region of Brazil

Cited by 9 publications

References 20 publications

Dorper × Santa Ines F1 crossbred lambs under different grazing times and supplement levels in tropical regions: performance and macromineral requirements

Dorper × Santa Ines F1 crossbred lambs under different grazing times and supplement levels in tropical regions: performance and macromineral requirements

The net iron, manganese, copper, and zinc requirements for maintenance and growth of Dorper × Hu ewe lambs

Ingestive behaviour and Growth Performance of Boer Crossbred and Indigenous Goat Kids Under Different Feeding Levels in Semiarid Region in Brazil

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